Mitsubishi Lancer 2001 User Manual

General ........................

WORKSHOP MANUAL

SUPPLEMENT

FOREWORD

This manual outlines changes in servicing procedures related to th e chassis including vehicle inspections, adjustments and improvements in the newly equipped models. Please read this manual carefully so that it will be of assistance for your service activities. Please note that the following service manuals are also available and should be used in conjunction with this manual.

TECHNICAL INFORMATION MANUAL

PYME9501

PYME9501-1

WORKSHOP MANUAL

CHASSIS GROUP PWME9511 (Basic)

PWME9511-A (Supplement) PWME9511-B (Supplement)

ENGINE GROUP PWEE____

(Looseleaf edition)

ELECTRICAL WIRING PHME9511 (Basic)

PHME9511-A (Supplement) PHME9511-B (Supplement) PHME9511-C (Supplement)

BODY REPAIR MANUAL PBME9501 (Basic)

PBME9501-1 (Supplement) PBME9501-2 (Supplement)

PARTS CATALOGUE B806F006A_

Engine .........................

Engine Lubrication .............

Fuel ...........................

Engine Cooling .................

Intake and Exhaust .............

Engine Electrical ...............

Engine and Emission Control ....

Automatic Transmission ........

All information, illustrations and product descriptions contained in this manual are current as at the time of publication. We, however, reserve the right to make changes at any time without prior notice or obligation.

Mitsubishi Motors Corporation Jun. 2000

WARNING! (1) Improper service or maintenance of any component of the SRS and any SRS-related component,

can lead to personal injury or death to service personnel (from inadvertent firing of the air bag or to the driver and passenger (from rendering the SRS inoperative).

(2) SRS components should not be subjected to heat, so remove the SRS-ECU, air bag module

(driver’s side and front passenger’s side), clock spring, side impact sensor and front seat assembly (side air bag module) before drying or baking the vehicle after painting. SRS-ECU, air bag module, clock spring and side impact sensor: 93_C or more

(3) Service or maintenance of any SRS component and SRS-related component must be performed

only at an authorized MITSUBISHI dealer.

(4) MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP

52B - Supplemental Restraint System (SRS), before beginning any service or maintenance of any component of the SRS and any SRS-related component.

NOTE Section titles with asterisks (*) in the table of contents in each group indicate operations requiring warnings.

GENERAL

CONTENTS

00-1

VEHICLE IDENTIFICATION 2.................

Models 2......................................

Model Code 2.................................

Chassis Number 3.............................

MAJOR SPECIFICATIONS 4...................

Hatchback 4...................................

00-2

GENERAL - Vehicle Identification

VEHICLE IDENTIFICATION

MODELS

Model code Engine model Transmission model Fuel supply system

CJ1A MNDEL6/R6 4G13 (1,298 mL) F5M41 <5M/T> MPI

(Electronically Controlled

MNJEL6/R6

CJ4A MNJEL6/R6 4G92 MPI (1,597 mL)

MRJEL6/R6 F4A41

<INVECS-II 4A/T>

Multi Point Fuel Injection)

MODEL CODE

NJEL

No. Items Contents

1 Development CJ: MITSUBISHI (2-door)

2 Engine type 1: 1,298 mL petrol engine

4: 1,597 mL petrol engine

3 Sort A: Passenger car

4 Body style M: 2-door hatchback

5 Transmission type N: 5-speed manual

transmission

R: 4-speed automatic

transmission

6 Trim level D: GL

J: GLX or GLXi

7 Specification engine

feature

8 Steering wheel

location

E: SOHC-MPI

L: Left hand R: Right hand

9 Destination 6: For Europe

GENERAL - Vehicle Identification

CHASSIS NUMBER

The chassis number is stamped on the toeboard inside the engine compartment.

00-3

12 3

No. Items Contents

1 Fixed figure J Asia

2 Distribution channel M Japan channel

3 Destination A For Europe, right hand drive

4 Body style M 2-door hatchback

5 Transmission type N 5-speed manual transmission

6 Development order CJ COLT

7 Engine 1 4G13: 1,298 mL petrol engine

8 Sort A Passenger car

67891110

B For Europe, left hand drive

R 4-speed automatic transmission

4 4G92: 1,597 mL petrol engine

9 Model year 1 2001

10 Plant U Mizushima Motor Vehicle Works

11 Serial number - -

00-4

GENERAL - Major Specifications

MAJOR SPECIFICATIONS

HATCHBACK

Items CJ1A

MNDEL6, MNDER6

Vehicle dimensions mm

Overall length 1 3,900 3,900 3,900 3,900

Overall width 2 1,680 1,680 1,680 1,680

Overall height (unladen) 3 1,365,

1,380* 1,385* 1,400*

Wheelbase 4 2,415 2,415 2,415 2,415

Track-front 5 1,450 1,450 1,450 1,450

Track-rear 6 1,460 1,460 1,460 1,460

Overhang-front 7 825 825 825 825

Overhang-rear 8 660 660 660 660

Ground clearance (unladen) 9 150, 165*1,*3150, 165*1,*3150, 165*1,*3150, 165*1,*

Vehicle weight kg

Kerb weight 950 955 975 995

Max. gross vehicle weight rating 1,445 1,445 1,470 1,480

Max. axle weight rating-front 810 810 810 810

Max. axle weight rating-rear 705 705 705 705

CJ1A MNJEL6, MNJER6

1,365, 1,380* 1,385* 1,400*

CJ4A MNJEL6, MNJER6

1,365,

1,380* 1,385* 1,400*

CJ4A MNJEL6, MNJER6

1,365,

1,380* 1,385* 1,400*

Seating capacity 5

Engine

Model No. 4G13 4G92

Total displacement mL 1,298 1,597

Transmission

Model No. F5M41 F4A41

Type 5 speed-manual 4 speed-

automatic

Fuel system Fuel supply system MPI (Electronically Controlled Multi Point Fuel Injection)

NOTE

: indicates vehicles with high ground suspension.

1. *

: indicates vehicles with rear spoiler.

2. *

3. *

: indicates vehicles with high ground suspension and rear spoiler.

ENGINE

CONTENTS

ENGINE <4G1> 11A......................................................

ENGINE <4G9> 11B......................................................

11A-1

11A-2

ENGINE <4G1>

CONTENTS

GENERAL 3.................................

Outline of Changes 3..........................

GENERAL INFORMATION 3..................

SERVICE SPECIFICATIONS 3.................

SEALANT 3..................................

SPECIAL TOOLS 4..........................

ON-VEHICLE SERVICE 5.....................

Compression Pressure Check 5.................

Lash Adjuster Check 5.........................

CAMSHAFT AND CAMSHAFT OIL SEAL 8....

CRANKSHAFT FRONT OIL SEAL 11..........

CYLINDER HEAD GASKET 12...............

General/General Information/

ENGINE <4G1> -

Service Specifications/Sealant

GENERAL

OUTLINE OF CHANGES

The following service procedures have been established due to the addition of the 4G13-SOHC 16 valve MPI engine. Furthermore, other items are the same as for the 4G13-SOHC 12 valve MPI engine. D The basic ignition timing has been changed

as a direct-mounted crank angle sensor has been used.

D The compression pressure has been changed. D An auto-lash adjuster has been adopted. D Camshaft and camshaft oil seal removal and

installation

D Crankshaft front oil seal removal and installation D Cylinder head gasket removal and installation

GENERAL INFORMATION

Items 4G13

Compression ratio 10.0

Combustion chamber Pentroof type

Number of valve Intake 8

11A-3

Exhaust 8

V alve timing Intake Opening BTDC 17

Closing ABDC 39

Exhaust Opening BBDC 49

Closing ATDC 7

Auto-lash adjuster Equipped

SERVICE SPECIFICATIONS

Items Standard value Limit

Basic ignition timing 5_BTDC±3

Compression pressure (250 – 400 r/min) kPa 1,598 Min. 1,161

Cylinder head bolt shank length mm - 103.2

SEALANT

Items Specified sealant Remarks

Camshaft position sensor support MITSUBISHI GENUINE PART

MD970389 or equivalent

Semi-drying sealant

11A-4

ENGINE <4G1> -

Special Tools

SPECIAL TOOLS

Tool Number Name Use

MB990767 Front hub and

flange yoke holder

MD998719 Crankshaft pulley

holder pin

MD998443 Auto-lash adjuster

holder

MD998713 Camshaft oil seal

installer

Holding the camshaft sprocket

Supporting of lash adjuster

Press-in of the camshaft oil seal

MD998304 Crankshaft front oil

seal installer

MD998305 Crankshaft front oil

seal guide

MB991653 Cylinder head bolt

wrench

Press-fitting the crankshaft front oil seal

Cylinder head bolt removal and installation

ENGINE <4G1> -

ON-VEHICLE SERVICE

COMPRESSION PRESSURE CHECK

The disconnection of the distributor connector has been changed to the disconnection of the crank angle sensor connector due to the change of the crank angle sensor. Other service procedures are the same as before.

Standard value (at engine speed of 250 - 400 r/min):

Limit (at engine speed of 250 - 4 00 r/min):

LASH ADJUSTER CHECK

If an abnormal noise (knocking) that seems to be coming from the lash adjuster is heard after starting the engine and does not stop, carry out the following check.

NOTE (1) The abnormal noise which is caused by a problem

(2) If there is a problem with the lash adjusters, the noise

On-vehicle Service

1,598 kPa

Min. 1,161 kPa

with the lash adjusters is generated after the engine is started, an d will vary according to the engine speed. However, this noise is not related to the actual engine load.

Because of this, if the noise does not occur immediately after the engine is started, if it does not change in accordance with the engine speed, or if it changes in accordance with the engine load, the source of the noise is not the lash adjusters.

will almost never disappear, even if the engine has been run at idle to let it warm up. The only case where the noise might disappear is if the oil in the engine has not been looked after properly and oil sludge has caused the lash adjusters to stick.

11A-5

1. Start the engine.

2. Check that the noise occurs immediately after the engine is started, and that the noise changes in accordance with changes in the engine speed. If the noise does not occur immediately after the engine is started, or if it does not change in accordance with the engine speed, the problem is not being caused by the lash adjusters, so check for some other cause of the problem. Moreover, if the noise does not change in accordance with the engine speed, the cause of the problem is probably not with the engine. (In these cases, the lash adjusters are normal.)

3. While the engine is idling, check that the noise level does not change when the engine load is varied. If the noise level changes, the cause of the noise is probably parts striking because of worn crankshaft bearings or connecting rod bearings. (In such cases, the lash adjusters are normal.)

11A-6

ENGINE <4G1> -

4. After the engine has warmed up, run it at idle and check if any noise can be heard. If the noise has become smaller or disappeared, oil sludge could make the lash adjusters stick. Clean the lash adjusters. (Refer to the Engine Workshop Manual.) If not improved, go to step 5.

5. Bleed air from the lash adjusters.

6. If the noise has not disappeared even after the air bleeding, clean the lash adjusters. (Refer to the Engine Workshop Manual.)

NOTE (1) If the vehicle is parked on a slope for a long period

(2) After parking the vehicle for long periods, the oil drains

(3) If either of the above situations occur, the abnormal

On-vehicle Service

of time, the amount of oil inside the lash adjuster will decrease, and air may get into the high pressure chamber when starting the engine.

out of the oil passage, and it takes time for the oil to be supplied to th e lash adjuster, so air can get into the high pressure chamber.

noise can be eliminated by bleeding the air from inside the lash adjusters.

Good

Highpressure chamber

1. Check the engine oil and replenish or replace the oil if necessary.

NOTE (1) If there is a only small amount of oil, air will be drawn

in through the oil screen and will get into the oil passage.

(2) If the amount of oil is greater than normal, then the

oil will being mixed by the crankshaft and a large amount of air may get mixed into the oil.

(3) If the oil is degenerated, air and oil will not separate

easily in oil, and the amount of air mixed into the oil will increase.

(4) If the air which has been mixed in with the oil due

to any of the above reasons gets into the high pressure chamber of the lash adjuster, the air inside the high pressure chamber will be compressed when the valve is open and the lash adjuster will over-compress, resulting in abnormal noise when the valve closes. This is the same effect as if the valve clearance is adjusted to be too large by mistake. If the air inside the lash adjusters is then released, the operation of the lash adjusters will return to normal.

ENGINE <4G1> -

On-vehicle Service

11A-7

Drive pattern for air bleeding

Gradually open the throttle valve.

Approx. 3,000 r/min

Idle speed

15 seconds

Once

Close the throttle valve.

15 seconds

2. Run the engine at idle for 1 - 3 minutes to let it warm up.

3. With no load on the engine, repeat the drive pattern shown in the illustration at left and check if the abnormal noise disappears. (The noise should normally disappear after 10 - 30 repetitions, but if there is no change in the noise level after 30 repetitions or more, the problem is probably not due to air inside the lash adjusters.)

4. After the noise has disappeared, repeat the drive pattern shown in the illustration at left a further 5 times.

5. Run the engine at idle for 1 - 3 minutes and check that the noise has disappeared.

11A-8

ENGINE <4G1> - Camshaft and Camshaft Oil Seal

CAMSHAFT AND CAMSHAFT OIL SEAL

REMOVAL AND INSTALLATION

Pre-removal and Post-installation Operation

D Air Cleaner Removal and Installation D Ignition Coil Removal and Installation

(Refer to GROUP16.)

Apply engine oil to all moving parts during installation.

3.5 Nm

10 - 12 Nm

5.0 Nm

28 - 34 Nm

12 - 15 Nm

22 Nm

10 - 12 Nm

AA""CA

"BA

88 Nm

Removal steps

1. Breather hose connection

2. PCV hose connection

3. Accelerator cable clamp <LH drive vehicles>

4. Rocker cover

5. Rocker cover gasket

6. Spark plug guide

7. Timing belt front upper cover

8. Camshaft sprocket

9. Camshaft oil seal

AB""AA

Sealant: MITSUBISHI GENUINE PART MD970389 or equivalent

10. Lash adjuster, intake rocker arm and shaft assembly

11. Lash adjuster, exhaust rocker arm and shaft assembly

12. Ignition failure sensor connector

13. Camshaft position sensor connector

14. Camshaft position sensor support

15. Camshaft

16. Camshaft position sensing cylinder

ENGINE <4G1> - Camshaft and Camshaft Oil Seal

REMOVAL SERVICE POINTS

Timing mark

Camshaft sprocket

AA"

1. Turn the crankshaft in the forward direction (clockwise)

2. Secure the camshaft sprocket and the timing belt with

CAMSHAFT SPROCKET REMOVAL

to align the timing mark so that No.1 cylinder is at the compression TDC.

Caution Always turn the crankshaft in the forward direction (clockwise).

band cables to prevent deviation from the relative positions between the camshaft sprocket and the timing belt.

11A-9

MB990767

MD998443

MD998719

3. Use the special tool to stop the camshaft sprocket from turning.

4. Remove the camshaft sprocket with the timing belt attached.

Caution Do not turn the crankshaft after the camshaft sprocket is removed.

AB"

LASH ADJUSTER, INTAKE ROCKER ARM AND SHAFT ASSEMBLY/LASH ADJUSTER, EXHAUST ROCKER ARM AND SHAFT ASSEMBLY REMOVAL

Before removing the lash adjuster, rocker arm a nd shaft assembly, install the special tools as shown in the illustration so that the lash adjusters will not fall out.

Notch

Front of engine

INSTALLATION SERVICE POINTS

"AA

Position the rocker arm shaft so that their notches point the direction shown, an d install the lash adjuster, rocker arm and shaft assembly.

LASH ADJUSTER, EXHAUST ROCKER ARM AND SHAFT ASSEMBLY/LASH ADJUSTER, INTAKE ROCKER ARM AND SHAFT ASSEMBLY INSTALLATION

11A-10

ENGINE <4G1> - Camshaft and Camshaft Oil Seal

MD998713

"BA

1. Apply engine oil to the camshaft oil seal lip.

2. Use the special tool to press-fit the camshaft oil seal.

"CA

Use the special tool to stop the camshaft sprocket from turning in the same way as was done during removal, and then tighten the bolts to the specified torque.

Tightening torque: 88 Nm

CAMSHAFT OIL SEAL INSTALLATION

CAMSHAFT SPROCKET INSTALLATION

ENGINE <4G1> - Crankshaft Front Oil Seal

CRANKSHAFT FRONT OIL SEAL

REMOVAL AND INSTALLATION

Pre-removal and Post-installation Operation

D Timing Belt Removal and Installation D Crank angle sensor Removal and Installation

(Refer to GROUP16.)

(Lip)

Engine oil

11A-11

"BA "BA "BA

MD998304

Removal steps

1. Crankshaft sprocket

2. Spring pin

3. Crankshaft sensing blade

Crankshaft

"BA "AA

4. Crankshaft spacer

5. Crankshaft front oil seal

INSTALLATION SERVICE POINTS

"AA

1. Apply a small amount of engine oil to the entire

2. Tap the oil seal unit it flushes with the oil seal case.

CRANKSHAFT FRONT OIL SEAL INSTALLATION

circumference of the oil seal lip.

MD998305

Oil seal

11A-12

ENGINE <4G1> - Crankshaft Front Oil Seal/Cylinder Head Gasket

Crankshaft sensing blade

Crankshaft sprocket

Crankshaft spacer

Front of engine

Spring pin

CYLINDER HEAD GASKET

REMOVAL AND INSTALLATION

Pre-removal and Post-installation Operation

Prevention of Fuel Discharge <before removal only>

Fuel Leak Check <after installation only>

Under Cover Removal and Installation

"BA

CRANKSHAFT SPACER/CRANKSHAFT SENSING BLADE/SPRING PIN/CRANKSHAFT SPROCKET INSTALLATION

Install t he crankshaft sprocket assembled with the spring pin, the crankshaft sensing blade, and the crankshaft spacer to the crankshaft.

Engine Coolant Draining and Supplying

Engine Oil Draining and Supplying

Air Cleaner Removal an d Installation

ENGINE <4G1> - Cylinder Head Gasket

11A-13

(Engine oil)

10 - 12 Nm

49 Nm®0Nm®20 Nm®+90°®+90°(Cold engine)

5.0 Nm

24 Nm

88 Nm

Removal steps

1. Crank angle sensor connector

2. Detonation sensor connector

3. Oxygen sensor (rear) connector

4. Vacuum sensor connector

5. Ignition coil connector

6. Injector connector

7. EGR solenoid valve connector

8. Throttle position sensor connector

9. Idle speed control servo connector

10. Purge control solenoid valve connector

11. Engine coolant temperature gauge unit connector

12. Oxygen sensor (front) connector

13. Engine coolant temperature sensor connector

35 Nm

50 Nm

AA""CA AB""BA

"AA

(Engine oil)

14. Ignition failure sensor connector

15. Camshaft position sensor connector

Rocker cover (Refer to P.11A-8.)

Intake manifold (Refer to GROUP 15.)

Water inlet pipe (Refer to GROUP 14.)

16. Front exhaust pipe connection

17. Front exhaust pipe gasket

18. Exhaust manifold bracket

19. Oil level gauge assembly

20. O-ring

21. Timing belt front upper cover

22. Camshaft sprocket

23. Cylinder head bolts

24. Cylinder head assembly

25. Cylinder head gasket

11A-14

ENGINE <4G1> - Cylinder Head Gasket

REMOVAL SERVICE POINTS

Timing mark

Camshaft sprocket

AA"

1. Turn the crankshaft in the forward direction (clockwise)

2. Secure the camshaft sprocket and the timing belt with

CAMSHAFT SPROCKET REMOVAL

to align the timing mark so that No.1 cylinder is at the compression TDC.

Caution Always turn the crankshaft in the forward direction (clockwise).

band cables to prevent deviation from the relative positions between the camshaft sprocket and the timing belt.

MB990767

MB991653

MD998719

3. Use the special tool to stop the camshaft sprocket from turning.

4. Remove the camshaft sprocket with the timing belt attached.

Caution Do not turn the crankshaft after the camshaft sprocket is removed.

AB"

CYLINDER HEAD BOLT REMOVAL

Use the special tool to loosen the bolts in 2 or 3 steps in order of the numbers shown in the illustration, a nd remove the cylinder head assembly.

Front of engine

ENGINE <4G1> - Cylinder Head Gasket

INSTALLATION SERVICE POINTS

"AA

1. Wipe off all oil and grease from the gasket mounting

2. Install so that the shapes of the cylinder head holes match

CYLINDER HEAD GASKET INSTALLATION

surface.

Caution Do not allow foreign material to enter the engine coolant or oil passages and the cylinder.

the shapes of the respective cylinder head gasket holes.

11A-15

(Engine oil)

MB991653

"BA

CYLINDER HEAD BOLT INSTALLATION

1. When installing the cylinder head bolts, the length below the head of the bolts should be within the limit. If it is outside the limit, replace the bolts.

Limit (A): 103.2 mm

2. Apply a small amount of engine oil to the thread section and the washer of the cylinder head bolt.

3. Use the special tool to tighten the bolts by the following procedure (angle-tightening procedure). (1) Tighten the cylinder head bolts in the shown sequence

to 49 Nm.

(2) Loosen the cylinder head bolts completely in the

reverse of the shown sequence.

(3) Tighten the cylinder head bolts in the shown order

to 20 Nm.

Front of engine

11A-16

ENGINE <4G1> - Cylinder Head Gasket

Step (4)

Painted mark

Step (5)

(4) Mark the cylinder head bolts and the cylinder head with

paint, and then tighten the bolts in the shown sequence to 90°.

(5) Tighten the bolts in the shown sequence to additional

90°, and check that the paint marks on the cylinder head bolts are flush with the paint marks on the cylinder head.

Caution

Painted mark

1) If the tightening angle is less than 90°, the bolt is loose.

2) If the tightening angle is more than 90°, loosen the bolt and repeat the procedure from step

"CA

CAMSHAFT SPROCKET INSTALLATION

Use the special tool to stop the camshaft sprocket from turning in the same way as was done during removal, and then tighten the bolts to the specified torque.

Tightening torque: 88 Nm

ENGINE <4G9>

CONTENTS

11B-1

GENERAL 2.................................

Outline of Changes 2..........................

GENERAL INFORMATION 2..................

SPECIAL TOOL 2............................

ON-VEHICLE SERVICE 2.....................

Ignition Timing Check 2........................

Lash Adjuster Check 2.........................

CAMSHAFT AND CAMSHAFT OIL SEAL 5....

TIMING BELT 6..............................

11B-2

ENGINE <4G9> -

General/General Information/ Special Tool/On-vehicle Service

GENERAL

OUTLINE OF CHANGES

The following service procedures have been changed. Furthermore, other items are the same as before.

D The valve timing has been changed.

D The ignition timing has been changed. D An auto-lash adjuster has been added. D The timing belt lower cover has been changed.

GENERAL INFORMATION

Items 4G9

V alve timing Intake Opening BTDC 12

Closing ABDC 46

Exhaust Opening BBDC 46

Closing ATDC 2

SPECIAL TOOL

Tool Number Name Use

MD998443 Auto-lash adjuster

holder

ON-VEHICLE SERVICE

Supporting of lash adjuster

IGNITION TIMING CHECK

The ignition timing has been changed. Other service procedures are the same as before.

Standard value: Approx. 8_BTDC

LASH ADJUSTER CHECK

If an abnormal noise (knocking) that seems to be coming from the lash adjuster is heard after starting the engine and does not stop, carry out the following check.

NOTE (1) The abnormal noise which is caused by a problem

with the lash adjusters is generated after the engine is started, an d will vary according to the engine speed. However, this noise is not related to the actual engine load.

ENGINE <4G9> -

(2) If there is a problem with the lash adjusters, the noise

1. Start the engine.

3. While the engine is idling, check that the noise level does not change when the engine load is varied (for example, by shifting from N ® D). If the noise level changes, the cause of the noise is probably parts striking because of worn crankshaft bearings or connecting rod bearings. (In such cases, the lash adjusters are normal.)

5. Bleed air from the lash adjusters.

6. If the noise has not disappeared even after the air bleeding, clean the lash adjusters. (Refer to the Engine Workshop Manual.)

On-vehicle Service

11B-3

NOTE (1) If the vehicle is parked on a slope for a long period

of time, the amount of oil inside the lash adjuster will decrease, and air may get into the high pressure chamber when starting the engine.

(2) After parking the vehicle for long periods, the oil drains

out of the oil passage, and it takes time for the oil to be supplied to th e lash adjuster, so air can get into the high pressure chamber.

(3) If either of the above situations occur, the abnormal

noise can be eliminated by bleeding the air from inside the lash adjusters.

11B-4

Good

ENGINE <4G9> -

1. Check the engine oil and replenish or replace the oil if necessary.

NOTE (1) If there is a only small amount of oil, air will be drawn

(2) If the amount of oil is greater than normal, then the

(3) If the oil is degenerated, air and oil will not separate

On-vehicle Service

in through the oil screen and will get into the oil passage.

oil will being mixed by the crankshaft and a large amount of air may get mixed into the oil.

easily in oil, and the amount of air mixed into the oil will increase.

Drive pattern for air bleeding

Gradually open the throttle valve.

Approx. 3,000 r/min

Idle speed

15 seconds

Once

Close the throttle valve.

15 seconds

Highpressure chamber

(4) If the air which has been mixed in with the oil due

2. Run the engine at idle for 1 - 3 minutes to let it warm up.

4. After the noise has disappeared, repeat the drive pattern shown in the illustration at left a further 5 times.

5. Run the engine at idle for 1 - 3 minutes and check that the noise has disappeared.

ENGINE <4G9> - Camshaft and Camshaft Oil Seal

CAMSHAFT AND CAMSHAFT OIL SEAL

REMOVAL AND INSTALLATION

28 - 34 Nm

Apply engine oil to all

sliding parts during

installation.

11B-5

AA""AA

Notch

Front of engine

Removal steps

1. Lash adjuster, intake rocker arm and shaft assembly

2. Lash adjuster, exhaust rocker arm and shaft assembly

MD998443

REMOVAL SERVICE POINT

AA"

Before removing the lash adjuster, rocker arm a nd shaft assembly, install the special tools as shown in the illustration so that the lash adjusters will not fall out.

LASH ADJUSTER, INTAKE ROCKER ARM AND SHAFT ASSEMBLY/LASH ADJUSTER, EXHAUST ROCKER ARM AND SHAFT ASSEMBLY REMOVAL

INSTALLATION SERVICE POINT

"AA

Position the rocker arm shafts so that their notches point the direction shown, and install the lash adjuster, rocker arm and shaft assembly.

LASH ADJUSTER, EXHAUST ROCKER ARM AND SHAFT ASSEMBLY/LASH ADJUSTER, INTAKE ROCKER ARM AND SHAFT ASSEMBLY INSTALLATION

11B-6

ENGINE <4G9> - Timing Belt

TIMING BELT

REMOVAL AND INSTALLATION

10 Nm

Removal steps

1. Crank angle sensor connector

"AA 2. Timing belt lower cover

INSTALLATION SERVICE POINT

"AA

1. Mount the bolt shown in the illustration (M6´20 mm)

2. Mount the other bolts, and tighten them to the specified

TIMING BELT LOWER COVER INSTALLATION

first.

torque.

Tightening torque: 10 Nm

ENGINE LUBRICATION -

GROUP 12

ENGINE LUBRICATION

GENERAL

OUTLINE OF CHANGE

A quality of the engine oil has been changed.

ON-VEHICLE SERVICE

Specified Engine Oil (ACEA and API classification):

General/On-vehicle Service

ACEA A1, A2, A3/API SG or higher

12-1

NOTES

13A-1

MULTIPOINT FUEL

INJECTION (MPI)

CONTENTS

MULTIPOINT FUEL INJECTION (MPI)

<4G1> 2..............................

GENERAL 2...............................

Outline of Changes 2........................

GENERAL INFORMATION 2................

Self-diagnosis Function 2.....................

General Specifications 2......................

Multi-point Fuel Injection System

Diagnosis 3.................................

SERVICE SPECIFICATIONS 4..............

SPECIAL TOOLS 4........................

TROUBLESHOOTING 5....................

Diagnosis Function 5.........................

Fail-safe Function Reference Table 8...........

Inspection Chart for Diagnosis Codes 9........

Inspection Procedure Classified by Diagnosis

Code 10....................................

Inspection Chart for Trouble Symptoms 39......

Inspection Procedure for Trouble

Symptoms 40...............................

Data List Reference Table 65..................

Actuator Test Reference Table 70..............

Check at the Engine-ECU Terminals 71.........

Inspection Procedure Using an Analyzer 72.....

ON-VEHICLE SERVICE 78.................

Basic Idle Speed Adjustment 78...............

Component Location 79......................

Intake Air Temperature Sensor Check 80.......

Oxygen Sensor Check 80....................

INJECTOR 82............................

MULTIPOINT FUEL INJECTION (MPI)

<4G9> 84.............................

GENERAL 84.............................

Outline of Changes 84.......................

GENERAL INFORMATION 84..............

Self-diagnosis Function 84....................

General Specifications 84.....................

TROUBLESHOOTING 85..................

Diagnosis Function 85........................

Fail-safe Function Reference Table 89..........

Inspection Chart for Diagnosis Codes 90.......

Inspection Procedure Classified by Diagnosis

Code 92....................................

Inspection Chart for Trouble Symptoms 125.....

Inspection Procedure for Trouble

Symptoms 126..............................

Data List Reference Table 153.................

Actuator Test Reference Table 158.............

Check at the Engine-ECU Terminals 159........

Inspection Procedure Using an Analyzer 166....

13A-2

MPI <4G1> -

General/General Information

MULTIPOINT FUEL INJECTION (MPI) <4G1>

GENERAL

OUTLINE OF CHANGES

The service procedures have been established to describe revised sections due to the changed items shown below. D On-board Diagnostics System has been adopted, diagnostic items have been expanded, and diagnostic

code numbering system has been changed.

D Non-distributor two-coiled ignition system has been adopted. D Crank angle sensor attached to the crank shaft has been adopted. D Camshaft position sensor has been added. D Ignition failure sensor has been added. D Intake air temperature sensor built in the vacuum sensor (manifold absolute pressure sensor) has

been adopted.

D Oxygen sensor (front, rear) has been changed. D Ignition timing adjustment terminal has been abolished. D Delivery pipe has been changed.

GENERAL INFORMATION

SELF-DIAGNOSIS FUNCTION

The following functions have been added. D The engine-ECU records the engine operating condition when the diagnosis code is set.

This data is called “freeze frame” data. This data can be read by using the MUT-II, are can then be used in simulation tests for troubleshooting.

GENERAL SPECIFICATIONS

Item Specifications

Engine-ECU Identification No. E6T31372 <Vehicles with immobilizer system>

E6T31373 <Vehicles without immobilizer system>

MPI <4G1> -

General Information

MULTI-POINT FUEL INJECTION SYSTEM DIAGRAM

13A-3

L1 Oxygen sensor (front) L2 Vacuum sensor L3 Intake air temperature sensor L4 Throttle position sensor L5 Camshaft position sensor L6 Crank angle sensor L7 Engine coolant temperature sensor L8 Detonation sensor L9 Oxygen sensor (rear)

D Power supply voltage D Vehicle speed sensor D A/C switch D Power steering fluid pressure switch D Vehicle speed sensor D Ignition switch - ST D Ignition switch - IG

L2 Vacuum sensor

L3 Intake air temperature sensor

L5 Camshaft position sensor

Engine-

ECU

L4 Throttle position sensor

l1 Injector l2 Purge control solenoid valve l3 Idle speed control valve l4 EGR control servo valve

D Fuel pump relay D Engine control relay D A/C power relay D Engine warning lamp D Diagnosis signal D Ignition coil (power transistor) D Fan controller

l3 Idle speed control valve

Air cleaner

Fuel pressure regulator

PCV valve

L1 Oxygen

sensor (front)

Catalytic converter

To fuel tank

From fuel pump

l1 Injector

L7 Engine coolant

L8 Detonation

L6 Crank angle sensor

EGR valve

temperature sensor

sensor

L9 Oxygen

sensor (rear)

Catalytic converter

Air

Canister

l2 Purge control

solenoid valve

l4 EGR control solenoid valve

13A-4

MPI <4G1> -

Service Specifications/Special Tools

SERVICE SPECIFICATIONS

Items Standard value

Intake air temperature sensor resistance kW 20_C 2.3 - 3.0

80_C 0.30 - 0.42

Oxygen sensor output voltage (during revving) V 0.6 - 1.0

Oxygen sensor heater resistance (at 20_C) W Front 4.5 - 8.0

Rear 11 - 18

SPECIAL TOOLS

Tool Number Name Use

MB991536 Throttle position

sensor adjustment harness

MB991658 Test harness set D Measurement of voltage during trouble-

MD998464 Test harness

(4-pin, square)

MD998478 Test harness

(3-pin, triangle)

D Measurement of voltage during trouble-

shooting

D Measurement of voltage during trouble-

shooting

D Inspection of oxygen sensor (front)

D Measurement of voltage during trouble-

shooting

D Inspection using an analyzer

MPI <4G1> -

TROUBLESHOOTING

DIAGNOSIS FUNCTION

ENGINE WARNING LAMP (CHECK ENGINE LAMP)

If an abnormality occurs in any of the following items related to the Multipoint Fuel Injection (MPI) system, the engine warning lamp will illuminate. If th e lamp remains illuminated

Engine warning lamp (check engine lamp)

Engine warning lamp inspection items

Code No. Diagnosis item

- Engine-ECU

P0105 Vacuum sensor system

P0110 Intake air temperature sensor system

P0115 Engine coolant temperature sensor system

or if the lamp illuminates while the engine is running, check the diagnosis code output. However, the warning lamp will illuminate as bulb check for five seconds whenever the ignition switch is turned to the ON position.

Troubleshooting

13A-5

P0120 Throttle position sensor system

P0125 Feedback system

P0130 Oxygen sensor (front) system <sensor 1>

P0135 Oxygen sensor heater (front) system <sensor 1>

P0136 Oxygen sensor (rear) system <sensor 2>

P0141 Oxygen sensor heater (rear) system <sensor 2>

P0170 Abnormal fuel system

P0201 No. 1 injector system

P0202 No. 2 injector system

P0203 No. 3 injector system

P0204 No. 4 injector system

P0300

P0301 No. 1 cylinder misfire detected

P0302 No. 2 cylinder misfire detected

P0303 No. 3 cylinder misfire detected

P0304 No. 4 cylinder misfire detected

Random cylinder misfire detected

P0335 Crank angle sensor system

P0340 Camshaft position sensor system

P0403 EGR control solenoid valve system

P0420 Catalyst malfunction

P0443 Purge control solenoid valve system

P0505 Idle speed control system

13A-6

NOTE

1. If the engine warning lamp illuminates because of a malfunction of the engine-ECU, communication between MUT-II and the engine-ECU is impossible. In this case, the diagnosis code cannot be read.

2. After the engine-ECU has detected a malfunction, the engine warning lamp illuminates when the engine is next turned on and the same malfunction is re-detected. However, for items marked with a“L” in the diagnosis code number column, the engine warning lamp illuminates only on the first detection of the malfunction.

3. After the engine warning lamp illuminates, it will be switched off under the following conditions. (1) When the engine-ECU monitored t he power train malfunction three times* and met set condition

requirements, it detected no malfunction. *: In this case, “one time” indicates from engine start to stop.

(2) For misfiring malfunction, when driving conditions (engine speed, engine coolant temperature,

etc.) are similar to those when the malfunction was first recorded.

4. Sensor 1 indicates the sensor mounted at a position closest to the engine, and sensor 2 indicates the sensor mounted at the position second closest to the engine.

MPI <4G1> -

Troubleshooting

METHOD OF READING AND ERASING DIAGNOSIS CODES

Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points.

DIAGNOSIS USING DIAGNOSIS 2 MODE

1. Switch the diagnosis mode of the engine control unit to DIAGNOSIS 2 mode using the MUT-II.

2. Carry out a road test.

3. Take a reading of the diagnosis code a n d repair the problem location.

4. Turn the ignition switch to OFF and then back to ON again.

NOTE By turning the ignition switch to OFF, the engine-ECU will switch the diagnosis mode from DIAGNOSIS 2 mode to DIAGNOSIS 1 mode.

5. Erase the diagnosis codes.

INSPECTION USING MUT-IIDATA LIST AND ACTUATOR TESTING

1. Carry out inspection by means of the data list and the actuator test function. If there is an abnormality, check and repair the chassis harnesses and components.

2. After repairing, re-check using the MUT-II and check that the abnormal input and output have returned to normal as a result of t he repairs.

3. Erase the diagnosis code memory.

4. Remove the MUT-II, and then start the engine again and carry out a road test to confirm that the problem has disappeared.

MPI <4G1> -

FREEZE FRAME DATA

When the engine-ECU detects a malfunction and stores a diagnosis code, it also stores a current status of the engine. This function is called “freeze frame data.” By analyzing this “freeze frame” data with the MUT-II, an effective troubleshooting can be performed.

Displayed items of freeze frame data are shown in the following:

DISPLAYED ITEM LIST

Data item Unit

Troubleshooting

13A-7

Engine coolant temperature sensor

Engine speed r/min

Vehicle speed km/h

Long-term fuel compensation (long-term fuel trim)

Short-term fuel compensation (short-term fuel trim)

Fuel control condi- Open loop OL tion

Closed loop CL

Open loop owing to drive condition

Open loop owing to system malfunction

Closed loop based on one oxygen sensor

Calculation load value %

OL-DRV.

OL-SYS.

CL-H02S

Diagnosis code during data recording -

NOTE If malfunctions have been detected in multiple systems, store one malfunction only, which has been detected first.

READINESS TEST STATUS

The engine-ECU monitors the following main diagnosis items, judges if these items are in good condition or not, and the stores its history. This history can be read out by using MUT-II. (If the ECU has judged a item before, the MUT-II displays “Complete.”) In addition, if diagnosis codes are erased or the battery cable is disconnected, this history will also be erased (the memory will be reset).

D Catalyst: P0421 D Oxygen sensor: P0130 D Oxygen sensor heater: P0135, P0141

13A-8

MPI <4G1> -

Troubleshooting

FAIL-SAFE FUNCTION REFERENCE TABLE

When the main sensor malfunctions are detected by the diagnosis function, the vehicle is controlled by means of the pre-set control logic to maintain safe conditions for driving.

Malfunctioning item Control contents during malfunction

V acuum sensor 1. Uses the throttle position sensor signal and engine speed signal (crank angle sensor

signal) to take reading of the basic injector drive time and basic ignition timing from the pre-set mapping.

2. Fixes the ISC servo in the appointed position so idle control is not performed.

Intake air temperature sensor

Throttle position sensor (TPS)

Engine coolant temperature sensor

Camshaft position sensor

Detonation sensor Switches the ignition timing from ignition timing for super petrol to ignition timing for standard

Oxygen sensor (front) Air/fuel ratio feedback control (closed loop control) is not performed.

Oxygen sensor (rear) Performs the feedback control (closed loop control) of the air/fuel ratio by using only the

Misfire detection The engine-ECU stops supplying fuel to the cylinder with the highest misfiring rate if a

Controls as if the intake air temperature is 45_C.

No increase in fuel injection amount during acceleration due to the throttle position sensor signal.

Controls as if the engine coolant temperature is 80_C.

Injects fuelinto the cylinders inthe order 1-3-4-2with irregular timing. (After the ignitionswitch is turned to ON, the No. 1 cylinder top dead centre is not detected at all.)

petrol.

signal of the oxygen sensor (front) installed on the front of the catalytic converter.

misfiring that could damage the catalytic converter is detected.

MPI <4G1> -

Troubleshooting

INSPECTION CHART FOR DIAGNOSIS CODES

Code No. Diagnosis item Reference page

P0105 Vacuum sensor system 13A-10

P0110 Intake air temperature sensor system 13A-12

P0115 Engine coolant temperature sensor system 13A-13

P0120 Throttle position sensor system 13A-16

P0125 Feedback system 13A-18

P0130 Oxygen sensor (front) system <sensor 1> 13A-19

P0135 Oxygen sensor heater (front) system <sensor 1> 13A-21

P0136 Oxygen sensor (rear) system <sensor 2> 13A-22

P0141 Oxygen sensor heater (rear) system <sensor 2> 13A-24

P0170 Abnormal fuel system 13A-25

P0201 No. 1 injector system 13A-26

P0202 No. 2 injector system 13A-26

P0203 No. 3 injector system 13A-26

13A-9

P0204 No. 4 injector system 13A-26

P0300L Random cylinder misfire detected 13A-27

P0301 No. 1 cylinder misfire detected 13A-28

P0302 No. 2 cylinder misfire detected 13A-28

P0303 No. 3 cylinder misfire detected 13A-28

P0304 No. 4 cylinder misfire detected 13A-28

P0325 Detonation sensor system 13A-29

P0335 Crank angle sensor system 13A-29

P0340 Camshaft position sensor system 13A-31

P0403 EGR control solenoid valve system 13A-32

P0421 Catalyst malfunction 13A-33

P0443 Purge control solenoid valve system 13A-34

P0500 Vehicle speed sensor system 13A-35

P0505 Idle speed control system 13A-36

P1610 Immobilizer system 13A-38

NOTE

1. Do not replace the engine-ECU until a through terminal check reveals there are no short/open circuit.

2. Check that the engine-ECU earth circuit is normal before checking for the cause of the problem.

3. After the engine-ECU has detected a malfunction, a diagnosis code is recorded the next time the engine is started and the same malfunction is re-detected. However, for items marked with a “L”, the diagnosis code is recorded on the first detection of the malfunction.

4. Sensor 1 indicates the sensor mounted at a position closest to the engine, and sensor 2 indicates the sensor mounted at the position second closest to the engine.

13A-10

MPI <4G1> -

Troubleshooting

INSPECTION PROCEDURE CLASSIFIED BY DIAGNOSIS CODE

Code No. P0105 Vacuum sensor system Range of Check

Range of Check D Ignition switch: ON Set Conditions D The output voltage of the vacuum sensor is 4.5 V or more for 2 seconds.

(This corresponds to the absolute manifold pressure of 115 kPa or more.)

Range of Check D The output voltage of the throttle position sensor is 1.25 V or more. or D The vehicle is stationary. Set Conditions D The output voltage of the vacuum sensor is 0.2 V or less for 2 seconds.

(This corresponds to the absolute manifold pressure of 4.9 kPa or less.)

D Malfunction of the vacuum sensor D Improper connector contact, open circuit or

short-circuited harness

D Malfunction of the engine-ECU

MUT-IIData list

32 Barometric pressure sensor

(Refer to P.13A-65, DATA LIST REFERENCE TABLE.)

Check the following connector:

A-54

Measure at vacuum sensor connector A-54. D Disconnect the connector and

measure at the harness side.

(1) Voltage between terminal 3 and

earth (Ignition switch: ON)

OK:

(2) Resistance between terminal 2

Measure at vacuum sensor connector A-54.

D Connect connector terminals No.

D Ignition switch: ON

(1) Voltage between terminal 3 and

(2) Voltage between terminal 1 and

(3) Voltage between terminal 2 and

To the next page

4.8 - 5.2 V

and earth

OK:

2 W or less

1, No. 2 and No. 5 only by using test harness (MB991348), and measure at the pick-up harness.

earth

OK:

4.8 - 5.2 V

earth

OK:

Altitude 0 m: 3.7 - 4.3 V Altitude 1,200 m:

3.2 - 3.8 V

earth

OK:

0.5 V or less OK

(1) NG

(2) NG

(1) NG

(3) NG

(2) NG

Transient malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Repair

Measure at engine-ECU connector B-34. D Measure the voltage at the

engine-ECU terminal.

D Ignition switch: ON D Voltage between terminal 81 and

earth

OK:

4.8 - 5.2 V NG

Check the following connector:

B-34

Check the harness between the vacuum sensor and the engine-ECU.

Check the trouble symptoms.

Check the following connector:

B-34

Check the harness between the vacuum sensor and the engine-ECU.

Check the trouble symptoms.

Check the following connector:

B-34

Check the harness between the vacuum sensor and the engine-ECU, and repair if necessary.

Replace the vacuum sensor.

Check the trouble symptoms.

Check the following connector:

B-34

Check the harness between the vacuum sensor and the engine-ECU, and repair if necessary.

Check the following connector:

B-34

Check the harness between the vacuum sensor and the engine-ECU, and repair if necessary.

Repair

Replace the engine-ECU.

Repair

Replace the engine-ECU.

Repair

From the previous page

Measure at engine-ECU connector B-34. D Measure the voltage at the

engine-ECU terminal.

D Ignition switch: ON D Voltage between terminal 85 and

earth

OK:

Altitude 0 m: 3.7 - 4.3 V Altitude 1,200 m:

3.2 - 3.8 V

MPI <4G1> -

Check the following connector:

B-34

Check the harness between the vacuum sensor and the engine-ECU, and repair if necessary.

Check the following connector:

B-34

Check the trouble symptoms.

Replace the engine-ECU.

Troubleshooting

13A-11

Repair

13A-12

MPI <4G1> -

Troubleshooting

Code No. P0110 Intake air temperature sensor system Probable cause

Range of Check D Two seconds have passed since the ignition switch is turned ON or the

engine starting process is completed.

Set Conditions D The sensor output voltage is 4.6 V or more for two seconds (equivalent to

-45_C of intake air temperature)

or D The sensor output voltage is 0.2 V or more for two seconds (equivalent to

125_C of intake air temperature)

D Malfunction of intake air temperature sensor D Open or short circuit in intake air temperature

sensor or loose connector contact

D Malfunction of engine-ECU

MUT-IIData list

13 Intake air temperature sensor

OK:

Roughly the same as ambient temperature.

Check the intake air temperature sensor. (Refer to P.13A-80.)

Check the following connector:

A-54

Measure at vacuum sensor connector A-54. D Disconnect the connector and

measure at the harness side.

(1) Resistance between terminal 2

and earth

OK:

(2) Voltage between terminal 3 and

2 W or less

earth (Ignition switch: ON)

OK:

4.8 - 5.2 V

(1) NG

(2) NG

Transient malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Repair

B-34

Check the harness between the intake air temperature sensor and the engine-ECU.

Check the trouble symptoms.

Measure at engine-ECU connector B-34. D Measure the voltage at the

engine-ECU terminal.

D Disconnect connector A-54. D Ignition switch: ON D Voltage between terminal 81 and

earth

OK:

4.8 - 5.2 V

RepairCheck the following connector:

Repair

Replace the engine-ECU.

Check the following connector:

B-34

Check the harness between the air flow sensor and the engine-ECU, and repair if necessary.

Repair

To the next page

Check the following connector:

B-34

Check the harness between the intake air temperature sensor and the engine-ECU.

Check the trouble symptoms.

Repair

Replace the engine-ECU.

From the previous page

Measure at intake air temperature sensor connector A-54. D Use the test harness (MB991348)

to connect only terminals 1 and 3, and then measure at the pick-up harness.

D Ignition switch: ON D Voltage between terminal 1 and

earth

OK:

Ambient temperature 0_C:

3.2 - 3.8 V Ambient temperature 20_C:

2.3 - 2.9 V Ambient temperature 40_C:

1.5 - 2.1 V Ambient temperature 80_C:

0.4 - 1.0 V OK

Check the trouble symptoms.

MPI <4G1> -

Check the following connector:

B-34

Check the harness between the intake air temperature sensor and the engine-ECU, and repair if necessary.

Replace the engine-ECU.

Troubleshooting

13A-13

Repair

Code No. P0115 Engine coolant temperature sensor system

Range of Check D Engine: Two seconds after the engine has been started Set Conditions D The sensor output voltage is 4.6 V or more for two seconds (equivalent to

-45_C of engine coolant temperature)

or D The sensor output voltage is 0.1 V or less for two seconds (equivalent to

140_C of engine coolant temperature)

Range of Check D Engine: After starting Set Conditions D The engine coolant temperature has reduced from over 40_C to less than

40_C, and that condition has lasted for five minutes or more.

Probable cause

D Malfunction of engine coolant temperature sensor D Open or short circuit in the engine coolant

temperature sensor circuit or loose connector contact

D Malfunction of engine-ECU

13A-14

MPI <4G1> -

Troubleshooting

MUT-IIData list

21 Engine coolant temperature

sensor

OK:

When the engine is cold, the temperature is roughly the same as ambient temperature. If warm, it is 80 120_C.

Measure at engine coolant temperature sensor connector A-72. D Disconnect the connector and

measure at the harness side.

D Resistance between terminals 1

and 2

OK:

At 20_C of engine coolant temperature: 2.1 - 2.7 kW At 80_C of engine coolant temperature: 0.26 - 0.36 kW

Check the following connector:

A-72

Measure at engine coolant temperature sensor connector A-72. D Disconnect the connector and

measure at the harness side.

(1) Voltage between terminal 1 and

earth (Ignition switch: ON)

OK:

(2) Resistance between terminal 2

To the next page

4.8 - 5.2 V

and earth

OK:

2 W or less

(1) NG

(2) NG

Transient malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Replace

Repair

Measure at engine-ECU connector B-34. D Measure the voltage at the

engine-ECU terminal.

D Disconnect connector A-72. D Ignition switch: ON D Voltage between terminal 44 and

earth

OK:

4.8 - 5.2 V NG

Check the following connector:

B-34

Check the harness wire between the engine coolant temperature sensor and the engine-ECU.

Check the trouble symptoms.

Check the following connector:

B-34

Check the harness wire between the engine coolant temperature sensor and the engine-ECU.

Check the trouble symptoms.

Check the following connector:

B-34

Check the harness wire between the engine coolant temperature sensor and the engine-ECU, and repair if necessary.

Repair

Replace the engine-ECU.

Repair

Replace the engine-ECU.

Repair

From the previous page

Measure at engine coolant temperature sensor connector A-72. D Use test harness (MB991658) to

connect the connector, and measure at the pick-up harness.

D Ignition switch: ON D Voltage between terminal 1 and

earth

OK:

At 0_C of engine coolant temperature: 3.2 - 3.8 V At 20_C of engine coolant temperature: 2.3 - 2.9 V At 40_C of engine coolant temperature: 1.3 - 1.9 V At 80_C of engine coolant temperature: 0.3 - 0.9 V

Check the trouble symptoms.

MPI <4G1> -

Check the engine coolant temperature sensor. (Refer to P.13A-83*.)

Check the following connector:

B-34

Check the harness wire between the engine coolant temperature sensor and the engine-ECU, and repair if necessary.

Replace the engine-ECU.

Troubleshooting

Repair

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

13A-15

13A-16

MPI <4G1> -

Troubleshooting

Code No. 0120 Throttle position sensor system Probable cause

Range of Check

D Ignition switch: ON D Excluding 2 seconds after the ignition switch is turned to ON or immediately

after the engine starts.

Set Conditions D Engine speed is 1,000 r/min or less, and intake air pressure is 48 kPa or

less, TPS output voltage is 4.6 V or more for 2 seconds.

D The sensor output voltage is 0.2 V or less for 2 seconds.

D Malfunction of throttle position sensor D Open or short circuit in the throttle position sensor

circuit or loose connector contact

D Malfunction of the engine-ECU

MUT-IIData list

14 Throttle position sensor

OK:

Refer to P.13A-65, DATA LIST REFERENCE TABLE.

Check throttle position sensor. (Refer to P.13A-84*.)

Check the following connector:

A-05

Measure at throttle position sensor connector A-05. D Disconnect the connector and

measure at the harness side.

(1) The voltage between terminal 1

and earth (Ignition switch: ON)

OK:

(2) Resistance between terminal 4

4.8 - 5.2 V

and earth

OK:

2 W or less

(1) NG

Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Replace

Repair

Measure at engine-ECU connector B-34. D Measure the voltage at the

engine-ECU connector terminal.

D Ignition switch: ON D The voltage between terminal 81

and earth

OK:

4.8 - 5.2 V

Check the following connector:

B-34

Check the harness wire between the throttle position sensor and the engine-ECU.

Check the trouble symptoms.

Check the following connector:

B-34

Check the harness wire between the throttle position sensor and the engine-ECU, and repair if necessary.

Repair

Replace the engine-ECU.

Repair

Replace the engine-ECU.

To the next page

(2) NG

Check the following connector:

B-34

Check the harness wire between the throttle position sensor and the engine-ECU.

Check the trouble symptoms.

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

From the previous page

Measure at throttle position sensor connector A-05. D Use test harness (MB991536) to

connect the connector, and measure at the pick-up harness.

D Ignition switch: ON (1) The voltage between terminal 1

and earth

OK:

(2) The voltage between terminal 4

(3) The voltage between terminal 2

Measure at engine-ECU connector B-34.

D Measure the voltage at the

D Ignition switch: ON D The voltage between terminal 84

4.8 - 5.2 V

and earth

OK:

0.5 V or less

and earth

OK:

Accelerator pedal fully released: 0.3 - 1.0 V Accelerator pedal fully depressed: 4.5 - 5.5 V

engine-ECU terminal.

and earth

OK:

Accelerator pedal fully released: 0.3 - 1.0 V Accelerator pedal fully depressed: 4.5 - 5.5 V

MPI <4G1> -

(1), (2) NG

(3) NG

Check the following connector:

B-34

Check the harness wire between throttle position sensor and the engine-ECU.

Adjust the throttle position sensor. (Refer to P.13A-84*.)

Check the following connector:

B-34

Check the harness wire between throttle position sensor and the engine-ECU, and repair if necessary.

Troubleshooting

Check the following connector:

B-34

Check the harness wire between throttle position sensor and the engine-ECU, and repair if necessary.

Check the following connector:

B-34

Check the trouble symptoms.

Replace the engine-ECU.

13A-17

Repair

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

13A-18

MPI <4G1> -

Troubleshooting

Code No. P0125 Feedback system Probable cause

Range of Check

D The engine coolant temperature is approx. 80_C or more. D During stoichiometric feedback control D The vehicle is not being decelerated.

Set Conditions D Oxygen sensor (front) output voltage has been higher or lower than 0.5 V for

at least thirty seconds.

D Malfunction of oxygen sensor (front) D Open or short circuit in the oxygen sensor (front)

circuit or loose connector contact

D Malfunction of engine-ECU

Check the following connector:

A-106

Measure at oxygen sensor (front) connector A-106. D Disconnect the connector and

measure at the harness side.

D Resistance between terminal 2

and earth

OK:

2 W or less

Measure at oxygen sensor (front) connector A-106. D Use the test harness

(MD998464) to connect the connector, and measure at the pick-up harness side.

D Engine: 2,500 r/min (after

warming up)

(1) Voltage between terminal 2 and

earth

OK:

(2) Voltage between terminal 4 and

Measure at engine-ECU connector B-34.

D Measure the voltage at the

D Engine: 2,500 r/min (after

D Voltage between terminal 76 and

Check the following connector:

B-34

Check the trouble symptoms.

Replace the engine-ECU.

0.5 V or less

earth

OK:

0 V and 0.8 V alternate.

engine-ECU terminal.

warming up)

earth

OK:

0 V and 0.8 V alternate.

(1) NG

(2) NG

Repair

Check the following connector:

B-34

Check the harness wire between the oxygen sensor (front) and the engine-ECU.

Check the trouble symptoms.

Replace the engine-ECU.

Check the following connector:

B-34

Check the harness wire between the oxygen sensor (front) and the engine-ECU, and repair if necessary.

Check the oxygen sensor (front). (Refer to P.13A-80.)

Check the following connector:

B-34

Check the harness wire between the oxygen sensor (front) and the engine-ECU, and repair if necessary.

Check the following connector:

B-34

Check the harness wire between the oxygen sensor (front) and the engine-ECU, and repair if necessary.

Repair

Transient malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Repair

Replace

Repair

MPI <4G1> -

Troubleshooting

13A-19

Code No. P0130 Oxygen sensor (front) system <sensor 1>

Range of Check

D Three minutes have been passed since the engine has been started. D The engine coolant temperature is approx. 80_C or more. D Intake air temperature is 20 - 50_C D Engine speed is 1,200 r/min or more D Driving on a level surface at constant speed.

Set Conditions D The oxygen sensor (front) output voltage is 4.5 V or more when the sensor

output voltage is 0.2 V or less and a voltage of 5 V is applied to the oxygen sensor (front) inside the engine-ECU.

Range of Check

D Engine speed is 2,800 r/min or less D During driving D During air/fuel ratio feedback control

Set Conditions D The oxygen sensor (front) output frequency is six or less per 10 seconds on

average.

Probable cause

D Malfunction of oxygen sensor (front) D Open or short circuit in the oxygen sensor (front)

circuit or loose connector contact

D Malfunction of engine-ECU

13A-20

MPI <4G1> -

Troubleshooting

Check the following connector:

A-106

Measure at oxygen sensor (front) connector A-106. D Disconnect the connector and

measure at the harness side.

D Resistance between terminal 2

and earth

OK:

2 W or less

Measure at oxygen sensor (front) connector A-106. D Use the test harness

(MD998464) to connect the connector, and measure at the pick-up harness side.

D Engine: 2,500 r/min (after

warming up)

(1) Voltage between terminal 2 and

earth

OK:

(2) Voltage between terminal 4 and

Measure at engine-ECU connector B-34.

D Measure the voltage at the

D Engine: 2,500 r/min (after

D Voltage between terminal 76 and

Check the following connector:

B-34

Check the trouble symptoms.

Replace the engine-ECU.

0.5 V or less

earth

OK:

0 V and 0.8 V alternate.

engine-ECU terminal.

warming up)

earth

OK:

0 V and 0.8 V alternate.

(1) NG

(2) NG

Repair

Check the following connector:

B-34

Check the harness wire between the oxygen sensor (front) and the engine-ECU.

Check the trouble symptoms.

Replace the engine-ECU.

Check the following connector:

B-34

Check the harness wire between the oxygen sensor (front) and the engine-ECU, and repair if necessary.

Check the oxygen sensor (front). (Refer to P.13A-80.)

Check the following connector:

B-34

Check the harness wire between the oxygen sensor (front) and the engine-ECU, and repair if necessary.

Check the following connector:

B-34

Check the harness wire between the oxygen sensor (front) and the engine-ECU, and repair if necessary.

Repair

Transient malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Repair

Replace

Repair

MPI <4G1> -

Troubleshooting

13A-21

Code No. P0135 Oxygen sensor heater (front) system <sensor 1>

Range of Check

D The engine coolant temperature is approx. 20_C or more. D The oxygen sensor heater (front) remains on. D The engine speed is 50 r/min or more. D Battery voltage is 11 - 16 V.

Set Conditions D The current, which flows through the oxygen sensor heater (front), is 0.2 A

or less or 3.5 A or more for six seconds.

Measure at oxygen sensor (front) connector A-106. D Disconnect the connector and

measure at the harness side.

D Resistance between terminals 1

and 3

OK:

4.5 - 8.0 W

Check the following connector:

A-106

Measure at oxygen sensor (front) connector A-106. D Disconnect the connector and

measure at the harness side.

D Ignition switch: ON D Voltage between terminal 1 and

earth

OK:

System voltage

Measure at engine-ECU connector B-35. D Measure the voltage at the

engine-ECU terminal.

D Ignition switch: ON D Voltage between terminal 60 and

earth

OK:

System voltage

Check the following connector:

B-35

Check the harness wires between the oxygen sensor (front) and the engine-ECU and between the oxygen sensor (front) and the engine control relay.

Check the trouble symptoms.

Replace the engine-ECU.

Replace

Repair

Check the following connector:

B-13

Check the harness wires between the oxygen sensor (front) and the engine control relay, and repair if necessary.

Check the following connector:

B-35

Check the harness wire between the oxygen sensor (front) and the engine-ECU.

Replace the engine-ECU.

Repair

Transient malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Probable cause

D Malfunction of oxygen sensor heater (front) D Open or short circuit in the oxygen sensor heater

(front) circuit or loose connector contact

D Malfunction of engine-ECU

Repair

13A-22

MPI <4G1> -

Troubleshooting

Code No. P0136 Oxygen sensor (rear) system <sensor 2>

Range of Check

Set Conditions D The oxygen sensor (rear) output voltage is 4.5 V or more when the sensor

output voltage is 0.2 V or less and a voltage of 5 V is applied to the oxygen sensor (rear) inside the engine-ECU.

Range of Check

D Two seconds have passed after the ECU detected an open circuit. D When the oxygen sensor (front) is in good condition.

Set Conditions D When the air/fuel ratio is rich, the oxygen sensor (front) output voltage is 0.5

V or more, the oxygen sensor (rear) output voltage is less than 0.1 V, and the oxygen sensor (rear) output voltage fluctuates within 0.078 V.

Probable cause

D Malfunction of oxygen sensor (rear) D Open or short circuit in the oxygen sensor (rear)

circuit or loose connector contact

D Malfunction of engine-ECU

MPI <4G1> -

Troubleshooting

13A-23

Check the following connector:

A-108

Measure at oxygen sensor (rear) connector A-108. D Disconnect the connector and

measure at the harness side.

D Resistance between terminal 2

and earth

OK:

2 W or less

Measure at oxygen sensor (rear) connector A-108. D Measure the voltage at the

oxygen sensor (rear) terminal

D Engine: 2,500 r/min (after

warming up)

(1) Voltage between terminal 2 and

earth

OK:

(2) Voltage between terminal 4 and

Measure at engine-ECU connector B-34.

D Measure the voltage at the

D Engine: 2,500 r/min (after

D Voltage between terminal 75 and

Check the following connector:

B-34

Check the trouble symptoms.

Replace the engine-ECU.

0.5 V or less

earth

OK:

0 V and 0.8 V alternate.

engine-ECU terminal.

warming up)

earth

OK:

0 V and 0.8 V alternate.

(1) NG

(2) NG

Repair

Check the following connector:

B-34

Check the harness wire between the oxygen sensor (rear) and the engine-ECU.

Check the trouble symptoms.

Replace the engine-ECU.

Check the following connector:

B-34

Check the harness wire between the oxygen sensor (rear) and the engine-ECU, and repair if necessary.

Check the oxygen sensor (rear). (Refer to P.13A-81.)

Check the following connector:

B-34

Check the harness wire between the oxygen sensor (rear) and the engine-ECU, and repair if necessary.

Check the following connector:

B-34

Check the harness wire between the oxygen sensor (rear) and the engine-ECU, and repair if necessary.

Repair

Transient malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Repair

Replace

Repair

13A-24

MPI <4G1> -

Troubleshooting

Code No. P0141 Oxygen sensor heater (rear) system <sensor 2>

Range of Check

D The engine coolant temperature is approx. 20_C or more. D The oxygen sensor heater (rear) remains on. D The engine speed is 50 r/min or more. D Battery voltage is 11 - 16 V.

Set Conditions D The current, which flows through the oxygen sensor heater (rear), is 0.2 A or

less or 3.5 A or more for six seconds.

Measure at oxygen sensor (rear) connector A-108. D Disconnect the connector and

measure at the harness side.

D Resistance between terminals 1

and 3

OK:

11 - 1 8 W

Check the following connector:

A-108

Measure at oxygen sensor (rear) connector A-108. D Disconnect the connector and

measure at the harness side.

D Ignition switch: ON D Voltage between terminal 1 and

earth

OK:

System voltage

Measure at engine-ECU connector B-35. D Measure the voltage at the

engine-ECU terminal.

D Ignition switch: ON D Voltage between terminal 54 and

earth

OK:

System voltage

Check the following connector:

B-35

Check the harness wires between the oxygen sensor (rear) and the engine-ECU, and between the oxygen sensor (rear) and the engine control relay.

Check the trouble symptoms.

Replace the engine-ECU.

Replace

Repair

Check the following connector:

B-13

Check the harness wires between the oxygen sensor (rear) and the engine control relay, and repair if necessary.

Check the following connector:

B-35

Check the harness wire between the oxygen sensor (rear) and the engine-ECU, and repair if necessary.

Repair

Transient malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Probable cause

D Malfunction of oxygen sensor heater (rear) D Open or short circuit in the oxygen sensor heater

(rear) circuit or loose connector contact

D Malfunction of engine-ECU

Repair

MPI <4G1> -

Troubleshooting

Code No. P0170 Abnormal fuel system Probable cause

Range of Check D Engine: Being learning the air-fuel ratio Set Conditions D Two seconds or more have been passed while the fuel injection amount

compensation value is too low.

or D Two seconds or more have been passed while the fuel injection amount

compensation value is too high.

D Incorrect fuel pressure D Malfunction of injector D Malfunction of oxygen sensor (front) D Malfunction of intake air temperature sensor D Malfunction of vacuum sensor D Malfunction of engine-ECU

13A-25

MUT-IIData list

13 Intake air temperature sensor (Refer to P.13A-65.)

MUT-IIData list

21 Engine coolant temperature sensor (Refer to P.13A-66.)

MUT-IIData list

32 Vacuum sensor (Refer to P.13A-67.)

Check the injector (Refer to P.13A-86*.)

Check the following connectors:

Check the harness wire between the engine-ECU and the injector connector.

Check the fuel pressure (Refer to P.13A-78*.)

MUT-IIData list

81 Long-term fuel compensation (Refer to P.13A-69.)

D Is fuel trim more or less than zero?

D Check for fuel leaks from injector. D Check for entry of foreign matter (water, kerosene, etc.) into

the fuel.

Replace the engine-ECU.

A-74, A-75, A-76, A-80

Less than zero

NGNG

More than zero

Check the intake air temperature sensor system (Refer to P.13A-12, INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE CODE P0110.)

Check the engine coolant temperature sensor system (Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE CODE P0115.)

Check the vacuum sensor system (Refer to P.13A-10, INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE CODE P0105.)

Replace

Repair

Check if air was drawn into the intake system.

D Check for clogging of the injector. D Check for clogging of the fuel filter and fuel line. D Check the fuel pump (insufficient discharge rate). D Check for exhaust leaks (oxygen sensor installation section,

D Check for entry of foreign matter (water, kerosene, etc.) into

Replace the engine-ECU.

NGNG

cracks in exhaust manifold, cracks in front pipe, etc.).

the fuel.

Repair

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

13A-26

MPI <4G1> -

Troubleshooting

Code No. P0201 No. 1 injector system Code No. P0202 No. 2 injector system Code No. P0203 No. 3 injector system Code No. P0204 No. 4 injector system

Range of Check

D Engine speed is approx. 50 - 1,000 r/min D The throttle position sensor output voltage is 1.15 V or less. D Actuator test by MUT-II is not carried out.

Set Conditions D Surge voltage of injector coil is not detected for 2 seconds.

MUT-IIActuator Test

01 No. 1 injector 02 No. 2 injector 03 No. 3 injector 04 No. 4 injector

OK:

The idling condition should change

Check the following connectors:

A-74, A-75, A-76, A-80

Check the injector. (Refer to P.13A-86*.)

Measure at the injector connectors A-74, A-75, A-76, A-80.

D Disconnect the connector, and measure at the harness side. D Voltage between 1 and earth (Ignition switch: ON)

OK:

System voltage

Check the following connector:

Measure at the engine-ECU connector B-37.

D Disconnect the connector, and measure at the harness side. D Voltage between 1, 2, 14, 15 and earth (Ignition switch: ON)

OK:

System voltage

Check the trouble symptoms.

Use an analyzer to measure the signal waveform at injector connectors A-74, A-75, A-76, A-80. D Connect the connector using test harness (MB991348), and

measure at pick-up harness.

D Engine: Idling D The voltage between terminal 2 and earth

OK:

A normal waveform should be displayed as described on P.13A-69* (INSPECTION PROCEDURE USING AN ANALYZER).

B-37

NGNG

Probable cause

D Malfunction of the injector D Improper connector contact, open circuit or

short-circuited harness wire of the injector circuit

D Malfunction of the engine-ECU

Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Repair

Replace

Check the harness wire between the engine control relay and the injector connector, and repair if necessary.

Repair

Check the harness wire between the engine-ECU and the injector connector, and repair if necessary.

Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Replace the engine-ECU.

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

MPI <4G1> -

Troubleshooting

Code No. P0300 Random cylinder misfire detected Probable cause

Range of Check

D Engine speed is approx. 50 - 4,500 r/min. D When the engine is running except deceleration and sudden acceleration.

Set Conditions D The number of misfires exceeds a predetermined number per 200 engine

revolutions.

D The number of misfires exceeds a predetermined number per 1,000 engine

revolutions.

D Malfunction of the ignition system D Abnormal compression D Malfunction of injector D Abnormal signal from the crank angle sensor D Malfunction of the lambda control system D Malfunction of the engine coolant temperature

sensor

D Missing timing belt teeth D Malfunction of the EGR valve D Malfunction of engine-ECU

13A-27

MUT-IIData list

22 Crankshaft position sensor (Refer to P.13A-66.)

D Crankshaft position sensor waveform check D Engine speed: stable

OK:

Constant pulse range

Check the injector (Refer to P.13A-86*.)

Check the following connectors:

A-74, A-75, A-76, A-80, B-37

Check the harness wire between the engine-ECU and the injector connector

MUT-II Data list

81 Long-term fuel compensation (Refer to P.13A-69.)

MUT-II Data list

82 Short-term fuel compensation (Refer to P.13A-69.)

MUT-II Data list

21 Engine coolant temperature sensor (Refer to P.13A-66.)

Check the following items:

D Check the ignition coil, spark pugs, spark plug cables. D Check the compression pressure. D Check the timing belt for jumping teeth. D Check the EGR system and EGR valve.

Check the crankshaft position sensor system. (Refer to P.13A-29, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0335.)

Replace

Repair

Check the abnormal fuel system. (Refer to P.13A-25, INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE CODE P0170.)

Check the engine coolant temperature sensor system. (Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE CODE P0115.)

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

13A-28

MPI <4G1> -

Troubleshooting

Code No. P0301 No. 1 cylinder misfire detected Code No. P0302 No. 2 cylinder misfire detected Code No. P0303 No. 3 cylinder misfire detected Code No. P0304 No. 4 cylinder misfire detected

Range of Check

D The engine speed is 500 - 4,500 r/min. D While the engine is running except deceleration and sudden acceleration.

Set Conditions D The number of misfires exceeds a predetermined number per 200 engine

revolutions (Misfire has occurred in only one cylinder).

or D The number of misfires exceeds a predetermined number per 1,000 engine

revolutions (Misfire has occurred in only one cylinder).

Check the following connectors:

A-73, A-79

Measure at ignition coil connectors A-73, A-79. D Disconnect the connector and

measure at the harness side.

(1) The voltage between terminal 1

and earth (Ignition switch: ON)

OK:

(2) The voltage between terminal 3

(3) The resistance between terminal

System voltage

and earth (Engine: Cranking)

OK:

0.5 - 4.0 V

2 and earth

OK:

2 W or less

(1) NG

(2) NG

(3) NG

Repair

Check the following connector:

A-107

Check the ignition failure sensor (Refer to GROUP 16 - Ignition System.)

Check the harness wire between the ignition coil and the ignition failure sensor, and between the ignition coil and the ignition failure sensor.

Check the following connector:

B-37

Check the harness wire between the ignition coil and the engine-ECU.

Check the trouble symptoms.

Probable cause

D Malfunction of the ignition system D Abnormal compression D Malfunction of injector D Malfunction of engine-ECU

Repair

Replace

Repair

Replace the engine-ECU.

Check the ignition coil (Refer to GROUP 16 - Ignition System.)

Check the spark plugs.

Check the injector (Refer to P.13A-86*.)

Check the following connectors:

A-74, A-75, A-76, A-80, B-37

Check the harness wire between the injector and the engine-ECU.

Check the compression pressure. (Refer to GROUP 11B - On-vehicle Service.)

Check the trouble symptoms.

Check the harness wire between the ignition coil and the earth, and repair if necessary.

Replace

Repair

Replace the engine-ECU.

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

MPI <4G1> -

Troubleshooting

Code No. P0325 Detonation sensor system Probable cause

Range of Check D Engine: Two seconds after the engine has been started Set Conditions D Changes in sensor output voltage (detonation sensor peak voltage per 1/2

crankshaft rotation) in 200 consecutive cycles are 0.06 V or less.

D Malfunction of the detonation sensor D Open or short circuit in the detonation sensor

circuit or loose connector contact

D Malfunction of engine-ECU

13A-29

Check the following connector:

Measure at the detonation sensor connector A-64. D Disconnect the connector and measure at the harness

side.

D The resistance between terminal 2 and earth

OK:

2 W or less

Check the following connector:

Check the harness wire between the detonation sensor and the engine-ECU.

Check the trouble symptoms.

Replace the detonation sensor .

Check the trouble symptoms.

Replace the engine-ECU.

A-64

B-34

Repair

Check the harness wire between the detonation sensor and earth, and repair if necessary.

Repair

Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Code No. P0335 Crank angle sensor system Probable cause

Range of Check D Engine is cranking Set Conditions

D Sensor output voltage does not change for 2 seconds (no pulse signal input).

D Malfunction of the crank angle sensor. D Open or short circuit in the crank angle sensor

circuit or loose connector contact.

D Malfunction of engine-ECU

13A-30

MPI <4G1> -

Troubleshooting

MUT-IIData list

22 Crank angle sensor

OK:

Refer to P.13A-65, DATA LIST REFERENCE TABLE.

Check the following connector:

A-84

Measure at the crank angle sensor connector A-84. D Disconnect the connector and

measure at the harness side.

(1) The resistance between terminal

1 and earth

OK:

(2) The voltage between terminal 2

(3) The voltage between terminal 3

2 W or less

and earth (Ignition switch: ON)

OK:

4.8 - 5.2 V

and earth (Ignition switch: ON)

OK:

System voltage

(1) NG

(2) NG

(3) NG

Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Repair

Check the harness between the crank angle sensor and earth, and repair if necessary.

Measure at engine-ECU connector B-34. D Measure the voltage at the

engine-ECU terminal.

D Disconnect the connector A-84 D Ignition switch: ON D The voltage between terminal 89

and earth.

OK:

4.8 - 5.2 V

Check the following connector:

B-34

Check the harness wire between the crank angle sensor and the engine-ECU.

Check the trouble symptoms.

Check the following connector:

B-13

Check the following connector:

B-34

Check the harness wire between the crank angle sensor and the engine-ECU, and repair if necessary.

Repair

Replace the engine-ECU.

Repair

Use an analyzer to measure the output waveform at the crank angle sensor connector A-84. D Use the test harness

(MD998478) to connect the connector, and measure at the pick-up harness side.

D Engine: Idling D The voltage between terminal 2

and earth

OK:

A normal waveform should be displayed as described on P.13A-72 (Inspection Procedure Using an Analyzer). Its maximum value should be 4.8 V or more, and its minimum value should be 0.6 V or less

with no noise in waveform.

Check the trouble symptoms.

Replace the engine-ECU.

Check the harness wire between the crank angle sensor and the engine control relay, and repair if necessary.

Check the crank angle sensor vane

Replace the crank angle sensor.

Check the trouble symptoms.

Check the following connectors:

B-13, B-34

Check the harness wires between the crank angle sensor and the engine-ECU, crank angle sensor and the engine control relay, and the crank angle sensor and earth. Then, repair if necessary.

Replace

Repair

MPI <4G1> -

Troubleshooting

Code No. P0340 Camshaft position sensor system Probable cause

Range of Check D After the engine was started Set Conditions D The sensor output voltage does not change for 2 seconds (no pulse signal

input).

D Malfunction of the camshaft position sensor D Open or short circuit in the camshaft position

sensor circuit or loose connector contact.

D Malfunction of engine-ECU

13A-31

Check the following connector:

A-70

Measure at camshaft position sensor connector A-70. D Disconnect the connector and

measure at the harness side.

(1) The voltage between terminal 3

and earth (Ignition switch: ON)

OK:

(2) The voltage between terminal 2

(3) The resistance between terminal

Use an analyzer to measure the output waveform at camshaft position sensor connector A-70.

D Use test harness (MB991709) to

D Engine: Idling D The voltage between terminal 2

Check the trouble symptoms.

Replace the engine-ECU.

System voltage

and earth (Ignition switch: ON)

OK:

4.8 - 5.2 V

1 and earth

OK:

2 W or less

connect the connector, and measure at the pick-up harness.

and earth

OK:

A normal waveform should be displayed as described on P.13A-72 (Inspection Procedure Using an Analyzer), its maximum value should be 4.8 V or more, and its minimum value should be 0.6 V or less with no noise in waveform.

(1) NG

(2) NG

(3) NG

Repair

Check the following connector:

B-13

Check the harness wire between the camshaft position sensor connector and the engine control relay, and repair if necessary.

Measure at engine-ECU connector B-34. D Measure the voltage at the

engine-ECU terminal.

D Disconnect connector A-70. D Ignition switch: ON D The voltage between terminal 88

and earth

OK:

4.8 - 5.2 V

Check the following connector:

B-34

Check the harness wire between the camshaft position sensor connector and the engine-ECU.

Check the trouble symptoms.

Check the harness wire between the camshaft position sensor connector and earth, and repair if necessary.

Check the camshaft position sensing cylinder.

Check the trouble symptoms.

Replace the camshaft position sensor.

Check the following connectors:

B-13, B-34

Check the harness wires between the camshaft position sensor connector and the engine-ECU, the camshaft position sensor connector and the engine control relay, and the camshaft position sensor connector and earth. Then, repair if necessary.

Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Repair

Check the following connector:

B-34

Check the harness wire between the camshaft position sensor connector and the engine-ECU, and repair if necessary.

Repair

Replace the engine-ECU.

Replace

Repair

13A-32

MPI <4G1> -

Troubleshooting

Code No. P0403 EGR control solenoid valve system Probable cause

Range of Check

D Ignition switch: ON D Battery voltage is 10 V or more.

Set Conditions D The solenoid coil surge voltage (battery voltage + 2 V) is not detected when

the EGR control solenoid valve is turned from on to off.

D Malfunction of the EGR control solenoid valve D Open or short circuit in the EGR control solenoid

valve circuit or loose connector contact

D Malfunction of engine-ECU

MUT-IIActuator Test

10 EGR control solenoid valve

OK:

Operating sound can be heard and the valve vibrates.

Measure at the EGR control solenoid valve connector A-88. D Disconnect the connector, and

measure at the solenoid valve side.

D The resistance between terminals

1 and 2

OK:

28 - 36 W (at 20_C)

Check the following connector:

A-88

Measure at the EGR control solenoid valve connector A-88. D Disconnect the connector and

measure at the harness side.

D Ignition switch: ON D The voltage between terminal 1

and earth

OK:

System voltage

Measure at engine-ECU connector B-37. D Measure the voltage at the

engine-ECU terminal.

D Ignition switch: ON D The voltage between terminal 6

and earth

OK:

System voltage

Check the following connectors:

B-13, B-37

Check the harness wires between the EGR control solenoid valve and the engine control relay, and between the EGR control solenoid valve and the engine-ECU.

Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Replace

Repair

Check the following connector:

B-13

Check the harness wire between the EGR control solenoid valve and the engine control relay, and repair if necessary.

Check the following connector:

B-37

Check the harness wire between the EGR control solenoid valve and the engine-ECU.

Replace the engine-ECU.

Repair

Check the trouble symptoms.

Replace the engine-ECU.

MPI <4G1> -

Troubleshooting

Code No. P0421 Catalyst malfunction Probable cause

Range of Check

D The engine speed is 4,000 r/min or less. D During driving D During air/fuel ratio feedback control

Set Conditions D The ratio between the oxygen sensor (rear) and the oxygen sensor (front)

output frequencies reaches 0.8 per 10 seconds on average.

D Malfunction of catalyst D Malfunction of the oxygen sensor (front) D Malfunction of the oxygen sensor (rear) D Malfunction of engine-ECU

13A-33

Check the exhaust manifold. (Are there any cracks?)

MUT-IIData list

59 Oxygen sensor (rear)

D Transmission: 2nd D Drive with wide open throttle

OK:

600 - 1,000 mV

MUT-IIData list

11 Oxygen sensor (front)

OK:

600 - 1,000 mV when racing suddenly

MUT-IIData list

11 Oxygen sensor (front) D Transmission: 2nd

OK:

Changeover between 0 - 400 mV and 600 - 1,000 mV occur 15 times in 10 seconds.

Replace the oxygen sensor (rear).

Check the trouble symptoms.

Replace the catalytic converter.

Repair

Check the oxygen sensor (rear) system <sensor 2> (Refer to P.13A-22, INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE CODE P0136.)

Check the oxygen sensor (front) system <sensor 1> (Refer to P.13A-19, INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE CODE P0130.)

Replace the oxygen sensor (front).

Check the trouble symptoms.

Replace the engine-ECU.

13A-34

MPI <4G1> -

Troubleshooting

Code No. P0443 Purge control solenoid valve system Probable cause

Range of Check

D Ignition switch: ON D Battery voltage is 10 V or more.

Set Conditions D The solenoid coil surge voltage (battery voltage + 2 V) is not detected when

the purge control solenoid valve is turned from on to off.

D Malfunction of the purge control solenoid valve D Open or short circuit in the purge control solenoid

valve circuit or loose connector contact

D Malfunction of engine-ECU

MUT-IIActuator Test

08 Purge control solenoid valve

OK:

Operating sound can be heard and the valve vibrates.

Measure at the purge control solenoid valve connector A-81. D Disconnect the connector, and

measure at the solenoid valve side.

D The resistance between terminals

1 and 2

OK:

28 - 36 W (at 20_C)

Check the following connector:

A-81

Measure at the purge control solenoid valve connector A-81. D Disconnect the connector and

measure at the harness side.

D Ignition switch: ON D The voltage between terminal 2

and earth

OK:

System voltage

Measure at engine-ECU connector B-37. D Measure the voltage at the

engine-ECU terminal.

D Ignition switch: ON D The voltage between terminal 9

and earth

OK:

System voltage

Check the following connectors:

B-13, B-37

Check the harness wires between the purge control solenoid valve and the engine control relay, and between the purge control solenoid valve and the engine-ECU.

Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

Replace

Repair

Check the following connector:

B-13

Check the harness wire between the purge control solenoid valve and the engine control relay, and repair if necessary.

Check the following connector:

B-37

Check the harness wire between the purge control solenoid valve and the engine-ECU.

Replace the engine-ECU.

Repair

Check the trouble symptoms.

Replace the engine-ECU.

MPI <4G1> -

Troubleshooting

Code No. P0500 Vehicle speed sensor system Probable cause

Range of Check

D Engine: Two seconds after the engine was started D Idle switch: OFF D Engine speed: 2,500 r/min or more D During high engine load

Set Conditions D The sensor output voltage does not change for 2 seconds (no pulse signal

input).

D Malfunction of the vehicle speed sensor D Open or short circuit in the vehicle speed sensor

circuit or loose connector contact

D Malfunction of engine-ECU

13A-35

Does the speedometer operate normally?

YES

Use an analyzer to measure the output waveform of the vehicle speed sensor at engine-ECU connector B-34.

D Driving the vehicle D The voltage between terminal 86 and earth

OK:

A normal waveform should be displayed as described in OSCILLOSCOPE INSPECTION PROCEDURE, and noise should not be displayed in the waveform. (Refer to GROUP 23 - Troubleshooting.)

Check the following connector:

Check the trouble symptoms.

Replace the engine-ECU.

B-34

Check the vehicle speed sensor (Refer to GROUP 54 - Combination Meter.)

Check the following connectors:

Check the harness wire between intermediate connector B-33 and the engine-ECU, and repair if necessary.

Repair

B-33, B-34

Repair

13A-36

MPI <4G1> -

Troubleshooting

Code No. P0505 Idle speed control (ISC) system Probable cause

Check Area

D Vehicle speed has reached 1.5 km/h at least once. D Under the closed loop idle speed control.

Judgment Criteria D Actual idle speed has continued to be higher than the target idle speed by

300 r/min or more for 10 sec.

Check Area

D Vehicle speed has reached 1.5 km/h at least once. D During idle speed closed loop control. D The highest temperature at the last drive is 45_C or less. D Engine coolant temperature is approx. 80_C or more. D Battery voltage is 10 V or more. D Intake air temperature is - 10_C (14_F) or more.

Judgment Criteria D Actual idle speed has been minimum 200 r/min higher than the target idle

speed for ten seconds.

Check Area

D During idle speed closed loop control. D Engine coolant temperature is about 80_C or higher. D Battery voltage is 10 V or higher. D Power steering switch is off. D Intake air pipe pressure is 53 kPa or less. D Intake air temperature is - 10_C or more.

Judgment Criteria D Actual idle speed has been minimum 100 r/min higher than the target idle

speed for ten seconds.

D Malfunction of idle speed control (ISC) servo D Improper connector contact, open circuit or

short-circuited harness wire

D Malfunction of the engine-ECU

MPI <4G1> -

Troubleshooting

13A-37

MUT-IISelf-Diag Code

Is any diagnosis code other than No. P0505 output?

Check intake air hose and intake manifold for air intake.

contamination.

Check the idle speed control (ISC) servo. (Refer to P.13A-88*.)

Check the following connector:

Measure at the idle speed control servo connector A-56. D Disconnect the connector, and measure at the harness

side.

D Ignition switch: ON D The voltage between terminal 2 and earth D The voltage between terminal 5 and earth

OK:

System voltage

Measure at engine-ECU connector B-37. D Connect the connector using test harness (MB991709),

and measure at pick-up harness.

D The voltage between terminal 4 and earth D The voltage between terminal 5 and earth D The voltage between terminal 17 and earth D The voltage between terminal 18 and earth

OK:

The voltage changes as follows for three seconds when the ignition switch is turned ON. (When using a circuit tester) 5 V and 8 V alternates (When using an analyzer) 1 V or less and system voltage alternates

Check the following connectors:

Check the harness wire between the engine control relay and the idle speed control servo, and between the idle speed control servo and the engine-ECU.

Check the trouble symptoms.

A-56

B-13, B-37

YES

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Repair

Clean around the throttle valve. (Refer to P.13A-75*.)Check the throttle body (around the throttle valve) for

Replace

Repair

Check the following connector:

Check the harness wire between the engine control relay and the idle speed control servo, and repair if necessary.

Check the following connector:

Check the harness wire between the idle speed control servo and the engine-ECU.

Replace the engine-ECU.

Repair

Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.)

B-13

B-37

Repair

Replace the engine-ECU.

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

13A-38

MPI <4G1> -

Troubleshooting

Code No. P1610 Immobilizer system Probable cause

Range of Check D Ignition switch: ON Set Conditions

D Improper communication between the engine-ECU and the immobilizer-ECU

D Open or short circuit, or loose connector contact D Malfunction of the immobilizer-ECU D Malfunction of the engine-ECU

NOTE (1) If the registered ignition keys are close each other when starting the engine, radio interference may

cause this code to be displayed.

(2) This code may be displayed when registering the key ID code.

Check the following connectors:

B-24, B-32, B-35

Check the harness wire between the immobilizer-ECU and the engine-ECU.

Check the trouble symptoms.

Replace the immobilizer-ECU.

Repair

Replace

Check the trouble symptoms.

Replace the engine-ECU.

MPI <4G1> -

Troubleshooting

INSPECTION CHART FOR TROUBLE SYMPTOMS

13A-39

Trouble symptom Inspection

procedure No.

Communication Communication with all systems is not possible. 1 13A-40 with MUT-II is impossible.

Engine warning lamp and related parts

Starting No initial combustion (starting impossible) 5 13A-42

Idling stability Unstable idling (Rough idling, hunting) 8 13A-45 (Improper idling)

Idling stability When the engine is cold, it stalls at idling. (Die out) 11 13A-48 (Engine stalls)

Communication with engine-ECU only is not possible. 2 13A-40

The engine warning lamp does not illuminate right after the ignition switch is turned to the ON position.

The engine warning lamp remains illuminating and never goes out.

Initial combustion but no complete combustion (starting impossible)

Long time to start (improper starting) 7 13A-44

Idling speed is high. (Improper idling speed) 9 13A-47

Idling speed is low. (Improper idling speed) 10 13A-47

When the engine becomes hot, it stalls at idling. (Die out) 12 13A-49

3 13A-41

4 13A-41

6 13A-43

Reference page

The engine stalls when starting the car. (Pass out) 13 13A-51

The engine stalls when decelerating. 14 13A-51

Driving Hesitation, sag or stumble 15 13A-52

The feeling of impact or vibration when accelerating 16 13A-53

The feeling of impact or vibration when decelerating 17 13A-53

Poor acceleration 18 13A-54

Surge 19 13A-55

Knocking 20 13A-56

Dieseling 21 13A-56

Too high CO and HC concentration when idling 22 13A-57

Fans (radiator fan, A/C condenser fan) are inoperative 23 13A-58

13A-40

MPI <4G1> -

Troubleshooting

INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS

INSPECTION PROCEDURE 1

Communication with MUT-IIis not possible. (Communication with all systems is not possible.)

The cause is probably a defect in the power supply system (including earth) for the diagnosis line.

Measure at the diagnosis connector (16-pin) B-18. D Voltage between 16 and earth

OK:

Battery voltage

Measure at the diagnosis connector (16-pin) B-18.

D Continuity between 4 and earth D Continuity between 5 and earth

OK:

Continuity

Replace the MUT-II.

Check the following connectors:

B-67, B-74

check the trouble symptom.

Check the harness wire between the diagnostic connector (16-pin) and earth, and repair if necessary.

INSPECTION PROCEDURE 2

MUT-IIcommunication with engine-ECU is impossible.

One of the following causes may be suspected:

D No power supply to engine-ECU. D Defective earth circuit of engine-ECU. D Defective engine-ECU. D Improper communication line between engine-ECU and MUT-II

Probable cause

D Malfunction of the connector D Malfunction of the harness wire

Repair

Check the harness wire between the power supply and diagnostic connector (16-pin), and repair if necessary.

Probable cause

D Malfunction of engine-ECU power supply circuit D Malfunction of engine-ECU D Open circuit between engine-ECU and diagnosis

connector

Check the following connectors:

B-24 <Vehicles with immobilizer system>, B-32, B-35, B-38

check the trouble symptom.

Check the harness wire between engine-ECU and diagnosis connector.

Repair

Check the harness wire between engine-ECU and earth.

Check the power supply and ignition switch-IG system. (Refer to P.13A-59, INSPECTION PROCEDURE 25.)

Repair

NOTE Though the above inspection has been performed, if trouble symptom does not disappear, check the multi center display, and replace it if necessary.

INSPECTION PROCEDURE 3

MPI <4G1> -

Troubleshooting

13A-41

The engine warning lamp does not illuminate right after the ignition switch is turned to the ON position.

Because there is a burnt-out bulb, the engine-ECU causes the engine warning lamp to illuminate for five seconds immediately after the ignition switch is turned to ON. If the engine warning lamp does not illuminate immediately after the ignition switch is turned to ON, one of the malfunctions listed at right has probably occurred.

MUT-IIData list

16 Engine ECU power supply voltage (Refer to P.13A-66.)

Measure at the engine-ECU connector B-36.

D Disconnect the connector, and measure at the harness side. D Earth the terminal No. 36.

OK:

The engine warning lamp illuminates.

Check a burnt-out bulb.

Measure at the combination meter connector B-02.

D Disconnect the connector, and measure at the harness side. D Voltage between 42 and earth (Ignition switch: ON)

OK:

System voltage

Check the following connectors:

B-02, B-32, B-36, B-69

check the trouble symptom.

Replace

Check the engine-ECU power supply and earth circuit. (Refer to P.13A-59, INSPECTION PROCEDURE 24.)

Check the following connector:

check the trouble symptom.

Replace the engine-ECU.

Check the engine warning lamp power supply circuit, and repair if necessary.

Repair

Check the harness wire between combination meter and engineECU, and repair if necessary.

Probable cause

D Burnt-out bulb D Defective warning lamp circuit D Malfunction of the engine-ECU

B-36.

Repair

INSPECTION PROCEDURE 4

The engine warning lamp remains illuminating and never goes out.

In cases such as the above, the cause is probably that the engine-ECU is detecting a problem in a sensor or actuator, or that one of the malfunctions listed at right has occurred.

MUT-IISelf-Diag code

Are diagnosis codes displayed?

Measure at the combination meter connector B-02.

D Disconnect the connector, and measure at the harness side. D Disconnect the engine-ECU connector D Continuity between 53 and earth

OK:

No continuity

Replace the engine-ECU.

Yes

Probable cause

D Short-circuit between the engine warning lamp and

engine-ECU

D Malfunction of the engine-ECU

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check the harness wire between combination meter and engineECU connector, and repair if necessary.

13A-42

INSPECTION PROCEDURE 5

MPI <4G1> -

Troubleshooting

No initial combustion (starting impossible)

In cases such as the above, the cause is probably that a spark plug is defective, or that the supply of fuel to the combustion chamber is defective. In addition, foreign materials (water, kerosene, etc.) may be mixed with the fuel.

Check battery voltage when cranking.

OK:

8 V or higher

Is an immobilizer-ECU diagnosis code displayed?

MUT-IIData list

16 Voltage of engine-ECU power source (Refer to P.13A-66.)

Does the camshaft rotate at the engine cranking? (When oil filler cap is removed.)

Yes

MUT-IISelf-Diag code

Are diagnosis codes displayed?

MUT-IIData list

22 Crank angle sensor

OK:

Cranking speed is displayed.

MUT-IIActuator test

07 Fuel pump (Refer to P.13A-70.)

MUT-IIData list

21 Engine coolant temperature sensor (Refer to P.13A-66.)

Can any sound be heard from the injectors when cranking?

Does the engine tachometer display the cranking speed? D Set the tachometer of primary voltage detection type.

Check the ignition timing when cranking.

OK:

Approx. 5_ BTDC

Check the following items.

D Check the ignition coil, spark plugs, spark plug cables. (Refer to GROUP 16 - On-vehicle service.) D Check if the injectors are clogged. D Check if foreign materials (water, alcohol, etc.) got into fuel. D Check the compression pressure. D Check the immobilizer system. (Refer to GROUP 54 - Ignition Key and Immobilizer.)

Yes

Probable cause

D Malfunction of the ignition system D Malfunction of the fuel pump system D Malfunction of the injectors D Malfunction of the engine-ECU D Malfunction of the immobilizer system D Foreign materials in fuel

Check the battery. (Refer to GROUP 54 - Battery.)

Check the immobilizer. (Refer to GROUP 54 - Ignition Key and Immobilizer.)

Check the power supply and ignition switch-IG system. (Refer to P.13A-59, INSPECTION PROCEDURE 25.)

Check timing belt for breakage.

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check thecrank angle sensor system. (Referto P.13A-29, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0335.)

Check the fuel pump system. (Refer to P.13A-60, INSPECTION PROCEDURE 26.)

Check the engine coolant temperature sensor system. (Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0115.)

Check the injector system. (Refer to P.13A-26, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0201, P0202, P0203, P0204.)

Check the ignition circuit system. (Refer to P.13A-63, INSPECTION PROCEDURE 30.)

Check that the distributor is installed properly.

INSPECTION PROCEDURE 6

MPI <4G1> -

Troubleshooting

13A-43

Initial combustion but no complete combustion (starting impossible)

In such cases as the above, the cause is probably that the spark plugs are generating sparks but the sparks are weak, or the initial mixture for starting is not appropriate.

Check battery voltage when cranking.

OK:

8 V or higher

MUT-IISelf-Diag code

Are diagnosis codes displayed?

MUT-IIActuator test

07 Fuel pump (Refer to P.13A-70.)

MUT-IIData list

21 Engine coolant temperature sensor (Refer to P.13A-66.)

MUT-IIData list

18 Ignition switch-ST (Refer to P.13A-66.)

Can any sound be heard from the injectors when cranking?

Is starting good if the engine is cranked with the accelerator pedal slightly depressed?

Yes

Check the battery. (Refer to GROUP 54 - Battery.)

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check the fuel pump system. (Refer to P.13A-60, INSPECTION PROCEDURE 26.)

Check the engine coolant temperature sensor system. (Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0115.)

Check the ignition switch-ST system. (Refer to P.13A-61, INSPECTION PROCEDURE 27.)

Check the injector system. (Refer to P.13A-26, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0201, P0202, P0203, P0204.)

Check ISC servo for operation sound. (Refer to P.13A-88*.)

D Clean the throttle valve area. (Refer to P.13A-75*.)

Probable cause

D Malfunction of the ignition system D Malfunction of the injector system D Foreign materials in fuel D Poor compression D Malfunction of the engine-ECU

Check the ISC servo system. (Refer to P.13A-36, INSPECTION PROCEDURE FOR

DIAGNOSIS CODE P0505.)

Check the ignition timing when cranking.

OK:

Approx. 5_BTDC

Check the following items.

D Check the ignition coil, spark plugs, spark plug cables. (Refer to GROUP 16 - On-vehicle Service.) D Check if the injectors are clogged. D Check the compression pressure. (Refer to GROUP 11B - On-vehicle Service.) D Check fuel lines for clogging. D Check if foreign materials (water, alcohol, etc.) got into fuel.

Check that the distributor is installed properly.

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

13A-44

INSPECTION PROCEDURE 7

MPI <4G1> -

Troubleshooting

In takes too long time to start. (Incorrect starting)

In cases such as the above, the cause is probably that the spark is weak and ignition is difficult, the initial mixture for starting is not appropriate, or sufficient compression pressure is not being obtained.

Check battery voltage when cranking

OK:

8 V or higher

MUT-IISelf-Diag code

Are diagnosis codes displayed?

MUT-IIActuator test

07 Fuel pump (Refer to P.13A-70.)

MUT-IIData list

21 Engine coolant temperature sensor (Refer to P.13A-66.)

MUT-IIData list

18 Ignition switch-ST (Refer to P.13A-66.)

Can any sound be heard from the injectors when cranking?

Check the ignition timing when cranking.

OK:

Approx. 5_BTDC

Yes

Check the battery. (Refer to GROUP 54 - Battery.)

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check the fuel pump system. (Refer to P.13A-60, INSPECTION PROCEDURE 26.)

Check the engine coolant temperature sensor system. (Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0115.)

Check the ignition switch-ST system. (Refer to P.13A-61, INSPECTION PROCEDURE 27.)

Check the injector system. (Refer to P.13A-26, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0201, P0202, P0203, P0204.)

Check that the distributor is installed properly.

Probable cause

D Malfunction of the ignition system D Malfunction of the injector system D Inappropriate gasoline use D Poor compression

Check the following items.

D Check the ignition coil, spark plugs, spark plug cables. (Refer to GROUP 16 - On-vehicle Service.) D Check if the injectors are clogged. D Check the compression pressure. (Refer to GROUP 11B - On-vehicle Service.) D Check if foreign materials (water, alcohol, etc.) got into fuel.

INSPECTION PROCEDURE 8

MPI <4G1> -

Troubleshooting

13A-45

Unstable idling (Rough idling, hunting)

In cases as the above, the cause is probably that the ignition system, air/fuel mixture, idle speed control (ISC) or compression pressure is defective. Because the range of possible causes is broad, inspection is narrowed down to simple items.

Were the battery terminals disconnected?

MUT-IISelf-Diag code

Are diagnosis codes displayed?

Does idling speed fluctuate excessively?

Check the ISC servo for operation sound. (Refer to P.13A-88*.)

Check the injector for operation sound.

MUT-IIData list

14 Throttle position sensor (Refer to P.13A-65.)

MUT-IIData list

13 Intake air temperature sensor (Refer to P.13A-65.)

MUT-IIData list

21 Engine coolant temperature sensor (Refer to P.13A-66.)

MUT-IIActuator test

08 Purge control solenoid valve (Refer to P.13A-70.)

MUT-IIActuator test

10 EGR control solenoid valve (Refer to P.13A-70.)

MUT-IIData list

59 Oxygen sensor (rear)

D Transmission: 2nd gear D Driving with throttle widely open

OK:

600 - 1,000 mV

MUT-IIData list

11 Oxygen sensor (front)

OK:

600 - 1,000 mV during sudden racing

Yes

After warming-up, let the engine run at idling for 10 minutes.

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check the throttle body. (Refer to P.13A-75*.)

check the trouble symptom.

Inspect the intake of air into the air intake system.

D Broken intake manifold gasket D Broken air intake hose D Broken vacuum hose D Positive crankcase ventilation valve does not operate.

Check the ISC system. (Refer to P.13A-36, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0505.)

Check the injector system. (Refer to P.13A-26, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0201, P0202, P0203, P0204.)

Check the throttle position sensor system. (Refer to P.13A-16, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0120.)

Check the intake air temperature sensor system. (Refer to P.13A-12, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0110.)

Check the engine coolant temperature sensor system. (Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0115.)

Check the purge control solenoid valve system. (Refer to P.13A-34, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0443.)

Check the EGR control solenoid valve system. (Refer to P.13A-32, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0403.)

Check the oxygen sensor (rear) system. (Refer to P.13A-22, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0136.)

Check the oxygen sensor (front) system. (Refer to P.13A-19, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0130.)

To next page

Probable cause

D Malfunction of the ignition system D Malfunction of air-fuel ratio control system D Malfunction of the ISC system D Malfunction of the purge control solenoid valve system D Malfunction of the EGR solenoid valve system D Poor compression D Drawing air into exhaust system

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

13A-46

From previous page

MUT-IIData list

11 Oxygen sensor (front)

OK:

Changes between 0 - 400 mV and 600 - 1,000 mV during idling

MUT-IIData list

27 Power steering fluid pressure switch (Refer to P.13A-67.)

MPI <4G1> -

Troubleshooting

Check the fuel pressure. (Refer to P.13A-78*.)

Check the power steering fluid pressure switch system. (Refer to P.13A-61, INSPECTION PROCEDURE 28.)

1. Inspect the intake of air into the air intake system.

D Broken intake man-

ifold gasket

D Broken vacuum hose D PCV valve does not

operate.

D Broken airintake hose

2. Check the injector for clog.

MUT-IIData list

28 A/C switch (Refer to P.13A-67.)

MUT-IIData list

45 ISC servo position (Refer to P.13A-68.)

Check the ignition timing. (Refer to GROUP 11B - On-vehicle Service.)

Check the following items.

D Check the ignition coil, spark plugs, spark plug cables. (Refer to GROUP 16 - On-vehicle Service.) D Check the purge control system. (Refer to GROUP 17 - Emission Control System.) D Check the EGR control system. (Refer to GROUP 17 - Emission Control System.) D Check the compression pressure. (Refer to GROUP 11A - On-vehicle Service.) D Check if foreign materials (water, alcohol, etc.) got into fuel.

Check the A/C switch and A/C relay system. (Refer to P.13A-62, INSPECTION PROCEDURE 29.)

Adjust the basic idle speed. (Refer to P.13A-78.)

Check that the distributor is installed properly.

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

INSPECTION PROCEDURE 9

MPI <4G1> -

Troubleshooting

13A-47

Idling speed is high. (Improper idling speed)

In such cases as the above, the cause is probably that the intake air volume during idling is too great.

MUT-IISelf-Diag code

Are diagnosis codes displayed?

Check the ISC servo for operation sound. (Refer to P.13A-88*.)

MUT-IIData list

14 Throttle position sensor (Refer to P.13A-65.)

MUT-IIData list

21 Engine coolant temperature sensor (Refer to P.13A-66.)

MUT-IIData list

28 A/C switch (Refer to P.13A-67.)

Basic idle adjustment (Refer to P.13A-78.)

check the trouble symptom.

Yes

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check the ISC system. (Refer to P.13A-36, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0505.)

Check the throttle position sensor system. (Refer to P.13A-16, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0120.)

Check the engine coolant temperature sensor system. (Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0115.)

Check the A/C switch and A/C relay system. (Refer to P.13A-62, INSPECTION PROCEDURE 29.)

Clean the throttle valve area. (Refer to P.13A-75*.)

Probable cause

D Malfunction of the ISC system D Malfunction of the throttle body

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

INSPECTION PROCEDURE 10

Idling speed is low. (Improper idling speed)

In cases such as the above, the cause is probably that the intake air volume during idling is too small.

MUT-IISelf-Diag code

Are diagnosis codes displayed?

Check the ISC servo for operation sound. (Refer to P.13A-88*.)

MUT-IIData list

14 Throttle position sensor (Refer to P.13A-65.)

MUT-IIData list

21 Engine coolant temperature sensor (Refer to P.13A-66.)

Basic idle adjustment (Refer to P.13A-78.)

Yes

Probable cause

D Malfunction of the ISC system D Malfunction of the throttle body

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check the ISC system. (Refer to P.13A-36, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0505.)

Check the throttle position sensor system. (Refer to P.13A-16, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0120.)

Check the engine coolant temperature sensor system. (Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0115.)

check the trouble symptom.

Clean the throttle valve area. (Refer to P.13A-75*.)

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

13A-48

INSPECTION PROCEDURE 11

MPI <4G1> -

Troubleshooting

When the engine is cold, it stalls at idling. (Die out)

In such cases as the above, thecause isprobably thatthe air/fuelmixture is inappropriate when the engine is cold, or that the intake air volume is insufficient.

Were the battery terminals disconnected?

MUT-IISelf-Diag code

Are diagnosis codes displayed?

Does the engine stall right after the accelerator pedal is released?

Is engine-idling stable after the warming-up?

Yes

Check the ISC servo for operation sound. (Refer to P.13A-88*.)

Check the injector for operation sound.

MUT-IIData list

14 Throttle position sensor (Refer to P.13A-65.)

MUT-IIData list

21 Engine coolant temperature sensor (Refer to P.13A-66.)

MUT-IIActuator test

10 EGR control solenoid valve (Refer to P.13A-70.)

Yes

After warming-up, let the engine run at idling for 10 minutes.

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Clean the throttle valve area. (Refer to P.13A-75*.)

Check if the unstable idling (Rough idling, hunting). (Refer to P.13A-45, INSPECTION PROCEDURE 8.)

Check the ISC system. (Refer to P.13A-36, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0505.)

Check the injector system. (Refer to P.13A-26, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0201, P0202, P0203, P0204.)

Check the throttle position sensor system. (Refer to P.13A-16, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0120.)

Check the engine coolant temperature sensor system. (Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0115.)

Check the EGR control solenoid valve system. (Refer to P.13A-32, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0403.)

Probable cause

D Malfunction of the ISC system D Malfunction of the throttle body D Malfunction of the injector system D Malfunction of the ignition system

Check the fuel pressure. (Refer to P.13A-78*.)

Check the ignition timing. (Refer to GROUP 11B - On-vehicle Service.)

Check the following items.

D Check the ignition coil, spark plugs, spark plug cables. (Refer to GROUP 16 - On-vehicle Service.) D Check the compression pressure. (Refer to GROUP 11B - On-vehicle Service.) D Check the engine oil viscosity.

Check that the distributor is installed properly.

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

INSPECTION PROCEDURE 12

MPI <4G1> -

Troubleshooting

13A-49

When the engine is hot, it stalls at idling. (Die out)

In such cases as the above, the cause is probably that ignition system, air/fuel mixture, idle speed control (ISC) or compression pressure is defective. In addition, if the engine suddenly stalls, the cause may also be a defective connector contact.

Were the battery terminals disconnected?

MUT-IISelf-Diag code

Are diagnosis codes displayed?

Check the ISC servo for operation sound. (Refer to P.13A-88*.)

Check the injector for operation sound.

Does the engine stall right after the accelerator pedal is released?

Does the engine stall easily again?

Yes

After warming-up, let the engine run at idling for 10 minutes.

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check the ISC system. (Refer to P.13A-36, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0505.)

Check the injector system. (Refer to P.13A-26, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0201, P0202, P0203, P0204.)

Clean the throttle valve area. (Refer to P.13A-75*.)

While carrying out an intermittent malfunction simulation test (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.), check for sudden changes in the signals shown below.

D Crank angle sensor signal D Injector drive signal

Probable cause

D Malfunction of the ignition system D Malfunction of air-fuel ratio control system D Malfunction of the ISC system D Drawing air into intake system D Improper connector contact

D Primary and secondary

ignition signal

D Fuel pump drive signal D Engine ECU power supply

voltage

MUT-IIData list

14 Throttle position sensor (Refer to P.13A-65.)

MUT-IIData list

13 Intake air temperature sensor (Refer to P.13A-65.)

MUT-IIData list

21 Engine coolant temperature sensor (Refer to P.13A-66.)

MUT-IIActuator test

10 EGR control solenoid valve (Refer to P.13A-70.)

MUT-IIData list

59 Oxygen sensor (rear)

D Transmission: 2nd gear D Driving with throttle widely open

OK:

600 - 1,000 mV

MUT-IIData list

11 Oxygen sensor (front)

OK:

600 - 1,000 mV during sudden racing

To next page

Check the throttle position sensor system. (Refer to P.13A-16, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0120.)

Check the intake air temperature sensor system. (Refer to P.13A-12, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0110.)

Check the engine coolant temperature sensor system. (Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0115.)

Check the EGR control solenoid valve system. (Refer to P.13A-32, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0403.)

Check the oxygen sensor (rear) system. (Refer to P.13A-22, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0136.)

Check the oxygen sensor (front) system. (Refer to P.13A-19, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0130.)

13A-50

From previous page

MUT-IIData list

11 Oxygen sensor (front)

OK:

Changes between 0 - 400 mV and 600 - 1,000 mV during idling

MUT-IIData list

27 Power steering fluid pressure switch (Refer to P.13A-67.)

MPI <4G1> -

Troubleshooting

Check the fuel pressure. (Refer to P.13A-78*.)

Check the power steering fluid pressure switch system. (Refer to P.13A-61, INSPECTION PROCEDURE 28.)

1. Inspect the intake of air into the air intake system.

D Broken intake man-

ifold gasket

D Broken vacuum hose D PCV valve does not

operate.

D Broken airintake hose

2. Check the injector for clog.

MUT-IIData list

28 A/C switch (Refer to P.13A-67.)

MUT-IIData list

45 ISC servo position (Refer to P.13A-68.)

Check the ignition timing. (Refer to GROUP 11B - On-vehicle Service.)

Check the following items.

D Check the ignition coil, spark plugs, spark plug cables. (Refer to GROUP 16 - On-vehicle Service.) D Check if the injectors are clogged. D Check the compression pressure. (Refer to GROUP 11B - On-vehicle Service.) D Check if foreign materials (water, alcohol, etc.) got into fuel.

Check the A/C switch and A/C relay system. (Refer to P.13A-62, INSPECTION PROCEDURE 29.)

Adjust the basic idle speed. (Refer to P.13A-78.)

Check that the distributor is installed properly.

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

INSPECTION PROCEDURE 13

MPI <4G1> -

Troubleshooting

13A-51

The engine stalls when starting the car. (Pass out)

In cases such as the above, the cause is probably misfiring due to a weak spark, or an inappropriate air/fuel mixture when the accelerator pedal is depressed.

MUT-IISelf-Diag code

Are diagnosis codes displayed?

MUT-IIActuator test

10 EGR control solenoid valve (Refer to P.13A-70.)

Check the following items.

D Check the ignition coil, spark plugs, spark plug cables. (Refer to GROUP 16 - On-vehicle Service.) D Check if air was drawn into the intake system.

Broken intake manifold gasket Broken or disconnected vacuum hose Improper operation of the PCV valve Broken air intake hose

Yes

Probable cause

D Drawing air into intake system D Malfunction of the ignition system

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check the EGR control solenoid valve system. (Refer to P.13A-32, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0403.)

INSPECTION PROCEDURE 14

The engine stalls when decelerating.

In cases such as theabove, thecause is probably that the intake air volume is insufficient due to a defective idle speed control (ISC) servo system.

Were the battery terminals disconnected?

MUT-IISelf-Diag code

Are diagnosis codes displayed?

MUT-IIData list

14 Throttle position sensor (Refer to P.13A-65.)

MUT-IIData list

45 ISC servo position D Is the idle speed control (ISC) servo position drops to 0 -

2 steps when decelerating (engine r/min less than 1,000)?

MUT-IIActuator test

10 EGR control solenoid valve (Refer to P.13A-70.)

Yes

Probable cause

D Malfunction of the ISC system

After warming-up, let the engine run at idling for 10 minutes.

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check the throttle position sensor system. (Refer to P.13A-16, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0120.)

Check the vehicle speed sensor system. (Refer to P.13A-35, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0500.)

Check the EGR control solenoid valve system. (Refer to P.13A-32, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0403.)

Check the following items.

D Check the ignition coil, spark plugs, spark plug cables. (Refer to GROUP 16 - On-vehicle Service.) D Clean the throttle valve area.

13A-52

INSPECTION PROCEDURE 15

MPI <4G1> -

Troubleshooting

Hesitation, sag or stumble

In cases such as the above, the cause is probably that ignition system, air/fuel mixture or compression pressure is defective.

MUT-IISelf-Diag code

Are diagnosis codes displayed?

Check the injectors for operation sound.

Check the ignition timing. (Refer to GROUP 11B - On-vehicle Service.)

MUT-IIData list

13 Intake air temperature sensor (Refer to P.13A-65.)

MUT-IIData list

21 Engine coolant temperature sensor (Refer to P.13A-66.)

MUT-IIData list

14 Throttle position sensor (Refer to P.13A-65.)

MUT-IIActuator test

10 EGR control solenoid valve (Refer to P.13A-70.)

MUT-IIData list

59 Oxygen sensor (rear)

D Transmission: 2nd gear D Driving with throttle widely open

OK:

600 - 1,000 mV

MUT-IIData list

11 Oxygen sensor (front)

OK:

600 - 1,000 mV during sudden racing

MUT-IIData list

11 Oxygen sensor (front)

OK:

Changes between 0 - 400 mV and 600 - 1,000 mV during idling

Check the fuel pressure. (Refer to P.13A-78*.)

Yes

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check the injector system. (Refer to P.13A-26, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0201, P0202, P0203, P0204.)

Check that the distributor is installed properly.

Check theintake air temperature sensorsystem. (Referto P.13A-12, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0110.)

Check the engine coolant temperature sensor system. (Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0115.)

Check the throttle position sensor system. (Refer to P.13A-16, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0120.)

Check the EGR control solenoid valve system. (Refer to P.13A-32, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0403.)

Check the oxygen sensor (rear) system. (Refer to P.13A-22, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0136.)

Check the oxygen sensor (front) system. (Refer to P.13A-19, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0130.)

Check the fuel pressure. (Refer to P.13A-78*.)

Probable cause

D Malfunction of the ignition system D Malfunction of air-fuel ratio control system D Malfunction of the fuel supply system D Malfunction of the EGR control solenoid valve system D Poor compression

1. Inspect the intake of air into the air intake system.

D Broken intake man-

ifold gasket

D Broken vacuum hose D PCV valve does not

operate.

D Broken airintake hose

2. Check the injector for clog.

Check the following items.

D Check the ignition coil, spark plugs, spark plug cables. (Refer to GROUP 16 - On-vehicle Service.) D Check the EGR control system. (Refer to GROUP 17 - Emission Control System.) D Check the compression pressure. (Refer to GROUP 11B - On-vehicle Service.) D Check the fuel filter or fuel line for clogging.

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

INSPECTION PROCEDURE 16

MPI <4G1> -

Troubleshooting

13A-53

The feeling of impact or vibration when accelerating

In cases such as the above, the cause is probably that there is an ignition leak accompanying the increase in the spark plug demand voltage during acceleration.

Yes

MUT-IISelf-Diag code

Are diagnosis codes displayed?

Check the following items.

D Check the ignition coil, spark plugs, spark plug cables. (Refer to GROUP 16 - On-vehicle Service.) D Check for occurrence of ignition leak.

Probable cause

D Malfunction of the ignition system

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

INSPECTION PROCEDURE 17

The feeling of impact or vibration when decelerating.

Malfunction of the ISC system is suspected. D Malfunction of the ISC system

MUT-IISelf-Diag code

Are diagnosis codes displayed?

Check the ISC servo for operation sound. (Refer to P.13A-88*.)

MUT-IIData list

14 Throttle position sensor (Refer to P.13A-65.)

Yes

Probable cause

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check the ISC system. (Refer to P.13A-36, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0505.)

Check the throttle position sensor system. (Refer to P.13A-16, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0120.)

Clean the throttle valve area. (Refer to P.13A-75*.)

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

13A-54

INSPECTION PROCEDURE 18

MPI <4G1> -

Troubleshooting

Poor acceleration

Defective ignition system, abnormal air-fuel ratio, poor compression pressure, etc. are suspected.

MUT-IISelf-Diag code

Are diagnosis codes displayed?

Check the injectors for operation sound.

Check the ignition timing. (Refer to GROUP 11B - On-vehicle Service.)

MUT-IIData list

13 Intake air temperature sensor (Refer to P.13A-65.)

MUT-IIData list

21 Engine coolant temperature sensor (Refer to P.13A-66.)

MUT-IIData list

14 Throttle position sensor (Refer to P.13A-65.)

MUT-IIActuator test

10 EGR control solenoid valve (Refer to P.13A-70.)

MUT-IIData list

59 Oxygen sensor (rear)

D Transmission: 2nd gear D Driving with throttle widely open

OK:

600 - 1,000 mV

MUT-IIData list

11 Oxygen sensor (front)

OK:

600 - 1,000 mV during sudden racing

MUT-IIData list

11 Oxygen sensor (front)

OK:

Changes between 0 - 400 mV and 600 - 1,000 mV during idling

Check the fuel pressure. (Refer to P.13A-78*.)

Yes

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check the injector system. (Refer to P.13A-26, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0201, P0202, P0203, P0204.)

Check that the distributor is installed properly.

Check the intake air temperature sensor system. (Refer to P.13A-12, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0110.)

Check the engine coolant temperature sensor system. (Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0115.)

Check the throttle position sensor system. (Refer to P.13A-16, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0120.)

Check the EGR control solenoid valve system. (Refer to P.13A-32, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0403.)

Check the oxygen sensor (rear) system. (Refer to P.13A-22, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0136.)

Check the oxygen sensor (front) system. (Refer to P.13A-19, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0130.)

Check the fuel pressure. (Refer to P.13A-78*.)

Probable cause

D Malfunction of the ignition system D Malfunction of air-fuel ratio control system D Malfunction of the fuel supply system D Poor compression pressure D Clogged exhaust system

1. Inspect the intake of air into the air intake system.

D Broken intake man-

ifold gasket

D Broken vacuum hose D PCV valve does not

operate.

D Broken airintake hose

2. Check the injector for clog.

Check the following items.

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

INSPECTION PROCEDURE 19

MPI <4G1> -

Troubleshooting

13A-55

Surge

Defective ignition system, abnormal air-fuel ratio, etc. are suspected. D Malfunction of the ignition system

MUT-IISelf-Diag code

Are diagnosis codes displayed?

Check the injectors for operation sound.

Check the ignition timing. (Refer to GROUP 11B - On-vehicle Service.)

MUT-IIData list

13 Intake air temperature sensor (Refer to P.13A-65.)

MUT-IIData list

21 Engine coolant temperature sensor (Refer to P.13A-66.)

MUT-IIData list

14 Throttle position sensor (Refer to P.13A-65.)

MUT-IIActuator test

10 EGR control solenoid valve (Refer to P.13A-70.)

MUT-IIData list

59 Oxygen sensor (rear)

D Transmission: 2nd gear D Driving with throttle widely open

OK:

600 - 1,000 mV

MUT-IIData list

11 Oxygen sensor (front)

OK:

600 - 1,000 mV during sudden racing

MUT-IIData list

11 Oxygen sensor (front)

OK:

Changes between 0 - 400 mV and 600 - 1,000 mV during idling

Check the fuel pressure. (Refer to P.13A-78*.)

Yes

Probable cause

D Malfunction of air-fuel ratio control system D Malfunction of the EGR control solenoid valve system

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check the injector system. (Refer to P.13A-26, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0201, P0202, P0203, P0204.)

Check that the distributor is installed properly.

Check the intake air temperature sensor system. (Refer to P.13A-12, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0110.)

Check the engine coolant temperature sensor system. (Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0115.)

Check the throttle position sensor system. (Refer to P.13A-16, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0120.)

Check the EGR control solenoid valve system. (Refer to P.13A-32, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0403.)

Check the oxygen sensor (rear) system. (Refer to P.13A-22, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0136.)

Check the oxygen sensor (front) system. (Refer to P.13A-19, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0130.)

Check the fuel pressure. (Refer to P.13A-78*.)

1. Inspect the intake of

D Broken intake man-

D Broken vacuum hose D PCV valve does not

D Broken airintake hose

2. Check the injector for

air into the air intake system.

ifold gasket

operate.

clog.

Check the following items.

D Check the ignition coil, spark plugs, spark plug cables. (Refer to GROUP 16 - On-vehicle Service.) D Check the EGR control system. (Refer to GROUP 17 - Emission Control System.)

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

13A-56

INSPECTION PROCEDURE 20

MPI <4G1> -

Troubleshooting

Knocking

In cases as the above, the cause is probably that the detonation control is defective or the heat value of the spark plug is inappropriate.

MUT-IISelf-Diag code

Are diagnosis codes displayed?

Does knocking occur when driving with the detonation sensor connector disconnected? At this time, use the MUT-II to check if the timing is retarded compared to when the detonation sensor connector is disconnected.

Yes

Check the following items.

D Spark plugs D Check if foreign materials (water, alcohol, etc.) got into fuel.

Yes

Probable cause

D Defective detonation sensor D Inappropriate heat value of the spark plug

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check the detonation sensor system. (Refer to P.13A-29, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0325.)

INSPECTION PROCEDURE 21

Dieseling

Fuel leakage from injectors is suspected. D Fuel leakage from injectors

Check the injectors for fuel leakage.

Probable cause

INSPECTION PROCEDURE 22

MPI <4G1> -

Troubleshooting

13A-57

Too high CO and HC concentration when idling

Abnormal air-fuel ratio is suspected. D Malfunction of the air-fuel ratio control system

MUT-IISelf-Diag code

Are diagnosis codes displayed?

Check the ignition timing. (Refer to GROUP 11B - On-vehicle Service.)

MUT-IIData list

21 Engine coolant temperature sensor. (Refer to P.13A-66.)

MUT-IIData list

13 Intake air temperature sensor (Refer to P.13A-65.)

MUT-IIData list

59 Oxygen sensor (rear)

D Transmission: 2nd gear D Driving with throttle widely open

OK:

600 - 1,000 mV

MUT-IIData list

11 Oxygen sensor (front)

OK:

600 - 1,000 mV when racing suddenly

MUT-IIData list

11 Oxygen sensor (front)

OK:

Repeat 0 - 400 mV and 600 - 1,000 mV alternately when idling.

Check the fuel pressure. (Refer to P.13A-78*.)

Yes

Probable cause

D Deteriorated catalyst

Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS CODES.

Check that the distributor is installed properly.

Check the engine coolant temperature sensor system. (Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0115.)

Check the intake air temperature sensor system. (Refer to P.13A-12, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0110.)

Check the oxygen sensor (rear) system. (Refer to P.13A-22, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0136.)

Check the oxygen sensor (front) system. (Refer to P.13A-19, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0130.)

Replace the oxygen sensor.

Check the trouble symptom.

Check the following items.

D Check the injectors for operation sound. D Check the injectors for fuel leakage. D Check the ignition coil, spark plugs, spark plug cables. (Refer to GROUP 16 - On-vehicle Service.) D Check the compression pressure. (Refer to GROUP 11B - On-vehicle Service.) D Check the positive crankcase ventilation system. (Refer to GROUP 17 - Emission Control System.) D Check the purge control system. (Refer to GROUP 17 - Emission Control System.) D Check the EGR control system. (Refer to GROUP 17 - Emission Control System.)

Check the trouble symptom.

Replace the catalytic converter.

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

13A-58

INSPECTION PROCEDURE 23

MPI <4G1> -

Troubleshooting

Fans (radiator fan, A/C condenser fan) are inoperative.

The fan motor relay is controlled by the power transistor inside the engine-ECU turning ON and OFF.

Measure at the engine-ECU connector B-37.

D Disconnect the connector, and measure at the harness side. D Check the condition of the fans (radiator fan and A/C condenser

fan). (Ignition switch: ON)

OK:

D Voltage between 20 and earth, 21 and earth

D Connect a jumper wire between 20 and earth

D Connect a jumper wire between 21 and earth

Check the following connector:

Check the trouble symptoms.

MUT-IIData list

21 Engine coolant temperature sensor

OK:

Check the thermostat.

Fans are stopped

(Ignition switch: ON)

OK:

System voltage

(Ignition switch: ON)

OK:

Radiator fan and condenser fan run at high speed.

(Ignition switch: ON)

OK:

Radiator fan and condenser fan run at low speed.

B-37

After the engine has warmed up, the engine coolant temperature durning idling is identical to the MUT-II reading.

D Check the radiator fan circuit. (Referto ELECTRICAL WIRING.) D Check the A/C condenser fan circuit.

Repair

Check the engine coolant temperature sensor system. (Refer to P.13A-13, INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0115.)

Replace

Probable cause

D Malfunction of the fan motor relay D Malfunction of the fan motor D Malfunction of the thermostat D Improper connector contact, open circuit or

short-circuited harness wire

D Malfunction of the engine-ECU

(Refer to ELECTRICAL WIRING.)

Replace the engine-ECU.

MPI <4G1> -

Troubleshooting

INSPECTION PROCEDURE 24

Check the engine-ECU power supply and earth circuit.

13A-59

Measure the engine-ECU connectors, B-34, B-36, B-37. D Disconnect the connector and measure at the harness side

1. Voltage between 82 and earth (Ignition switch: ON)

OK:

2. Voltage between 38 and earth

3. Voltage between 12, 25 and earth (Ignition switch: ON)

4. Continuity between 13, 26 and earth

5. Voltage between 80 and earth

Check the following connectors:

B-34, B-36, B-37

Check the trouble symptom.

Replace the engine-ECU.

Check the following connectors:

B-32, B-34, B-48, B-62, B-69

Check the trouble symptom.

Check the harness wire between engine-ECU and battery, and repair if necessary.

System voltage

OK:

System voltage

OK:

System voltage (when the terminal 38 is earthed)

OK:

Continuity

OK:

System voltage

Repair

1. NG

2., 3. NG

4. NG

5. NG

Check the following connectors:

Check the trouble symptom.

Check the harness wire between engine-ECU and ignition switch connector.

Check the ignition switch. (Refer to GROUP 54 - Ignition Switch and Immobilizer System.)

Check the following connectors:

Check the trouble symptoms.

Check the harness wire between engine-ECU and control relay connector, and repair if necessary.

Check the harness wire between engine-ECU and earth, and repair if necessary.

B-32, B-70

B-36, B-37

Repair

INSPECTION PROCEDURE 25

Power supply system and ignition switch-IG system

When an ignition switch ON signal is input to the engine-ECU, the engine-ECU turns the control relay ON. This causes battery voltage to be supplied to the engine-ECU, injectors and air flow sensor.

Check the control relay. (Refer to P.13A-83*.)

Measure at the control relay connector B-13.

D Disconnect the connector, and measure at the harness side. D Voltage between 3, 4 and earth

OK:

System voltage

Check the engine-ECU power supply and earth circuit. (Refer to P.13A-59, INSPECTION PROCEDURE 24.)

Replace

Probable cause

D Malfunction of the ignition switch D Malfunction of the control relay D Improper connector contact, open circuit or

short-circuited harness wire

D Disconnected engine-ECU earth wire D Malfunction of the engine-ECU

Check the following connector:

Check the trouble symptom.

Check the harnesswire between batteryand control relay connector, and repair if necessary.

A-10

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

Repair

13A-60

INSPECTION PROCEDURE 26

MPI <4G1> -

Troubleshooting

Fuel pump system

The engine-ECU turns the fuel pump relay ON when the engine is cranking or running, and this supplies power to drive the fuel pump.

Check the fuel pump operation. (Refer to P.13A-81*.)

Check the fuel pump relay. (Refer to P.13A-83*.)

Measure at the fuel pump connector D-14. D Disconnect the connector, and

measure at the harness side.

D Continuity between 2 and earth

OK:

Continuity

Check the following connectors:

B-12, B-33, D-04, D-14

Replace

Check the trouble symptom.

Check the harness wire between the fuel pump relay and fuel pump connector.

Replace the fuel pump.

Probable cause

D Malfunction of the fuel pump relay D Malfunction of the fuel pump D Improper connector contact, open circuit or

short-circuited harness wire

D Malfunction of the engine-ECU

Check the following connectors:

D-04, D-14

Check the trouble symptom.

Repair

Check the harness wire between the fuel pump andearth, and repair if necessary.

Repair

Measure at the fuel pump relay connector B-12.

D Connect the connector. D Voltage between 1 and earth

MUT-IIActuator test:

drive

OK:

System voltage

Check the harness wire between fuel pump relay connector and fuel pump, and repair if necessary.

Fuel pump

Measure at the fuel pump relay connector B-12. D Disconnect the connector, and

measure at the harness side.

D Voltage between 4 and earth

(Ignition switch: ON)

OK:

System voltage

Measure at the engine-ECU connector B-37. D Disconnect the connector, and

measure at the harness side.

D Voltage between 22 <Vehicles with

immobilizer system>, 8 <Vehicles without immobilizer system> and earth (Ignition switch: ON)

OK:

System voltage

Check the following connector:

Check the trouble symptom.

Replace the engine-ECU.

B-37

Check the following connectors:

B-32, B-70

Check the trouble symptom.

Check the harness wire between the fuel pump relay and ignition switch connector.

Check the ignition switch. (Refer to GROUP 54 - Ignition Switch and Immobilizer System.)

Check the following connector:

Repair

Check the trouble symptom.

Check the harness wire between the engine-ECU and the fuel pump relay, and repair if necessary.

Repair

B-12

Repair

NOTE: *: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).

INSPECTION PROCEDURE 27

MPI <4G1> -

Troubleshooting

13A-61

Ignition switch-ST system

The ignition switch-ST inputs a HIGH signal to the engine-ECU while the engine is cranking. The engine-ECU controls fuel injection, etc. during starting based on this input.

Measure at the engine-ECU connector B-34.

D Disconnect the connector, and measure at the harness side. D Voltage between 71 and earth (Ignition switch: START)

OK:

8V or more

Check the following connector:

Check the trouble symptom.

Replace the engine-ECU.

B-34

Repair

INSPECTION PROCEDURE 28

Power steering fluid pressure switch system

The presence or absence of power steering load is input to the engine-ECU. The engine-ECU controls the idle speed control (ISC) servo based on this input.

Probable cause

D Malfunction of ignition switch D Improper connector contact, open circuit or

short-circuited harness wire

D Malfunction of the engine-ECU

Check the following connectors:

Check the trouble symptom.

Check harness wire between the engine-ECU and ignition switch connector.

Check the ignition switch. (Refer to GROUP 54 - Ignition Switch and Immobilizer system.)

B-33, B-34

Repair

Probable cause

D Malfunction of power steering fluid pressure switch D Improper connector contact, open circuit or

short-circuited harness wire

D Malfunction of the engine-ECU

Check the power steering fluid pressure switch. (Refer to GROUP 37A - On-vehicle Service.)

Measure at the power steering fluid pressure switch connector A-78.

D Disconnect the connector, and measure at the harness side. D Voltage between 1 and earth (Ignition switch: ON)

OK:

System voltage

Check the following connector:

Check the trouble symptom.

Replace the engine-ECU.

A-78

Repair

Replace

Check the following connectors:

Check the trouble symptom.

Check harness wire between engine-ECU and power steering fluid pressure switch connector.

Replace the engine-ECU.

A-10, B-36

Repair

13A-62

INSPECTION PROCEDURE 29

MPI <4G1> -

Troubleshooting

A/C switch and A/C relay system

When an A/C ON signal is input to the engine-ECU, the engine-ECU carries out control of the idle speed control (ISC) servo, and also operates the A/C compressor magnetic clutch.

Check the A/C compressor relay. (Refer to GROUP 55 - On-vehicle Service.)

Measure at the engine-ECU connectors B-36, B-37.

D Disconnect the connectors, and measure at the harness side. D Voltage between 8 <Vehicles with immobilizer system>, 22

<Vehicles without immobilizer system> and earth, and 45 and earth (Ignition switch: ON, A/C switch: ON)

OK:

D Short circuit between 8 <Vehicles with immobilizer system>,

System voltage

22 <Vehicles without immobilizer system> and earth(Ignition switch: ON, A/C switch: ON)

OK:

A/C compressor clutch turns on.

Replace

Check the A/C system. (Refer to GROUP 55 - On-vehicle Service.)

Check the following connectors:

Check the trouble symptom.

Replace the engine-ECU.

Probable cause

D Malfunction of A/C control system D Malfunction of A/C switch D Improper connector contact, open circuit or

short-circuited harness wire

D Malfunction of the engine-ECU

B-36, B-37

Replace

INSPECTION PROCEDURE 30

MPI <4G1> -

Troubleshooting

13A-63

Ignition circuit system

The engine-ECU interruptsthe ignition coilprimary currentby turningthe power transistor inside the engine-ECU ON and OFF .

Check the ignition coil. (Refer to GROUP 16 - Ignition System.)

Check the ignition failure sensor. (Refer to GROUP 16 - Ignition System.)

Measure at the ignition failure sensor connector A-107. D Disconnect the connector and measure at the harness side.

Voltage between 4 and ground (Ignition switch: ON)

OK:

System voltage

Replace

Check the following connectors:

Check the trouble symptom.

Check the harness wire between the ignition failure sensor and ignition switch connector.

Check the ignition switch. (Refer to GROUP 54 - Ignition Switch.)

Probable cause

D Malfunction of ignition coil D Malfunction of ignition failure sensor D Improper connector contact, open circuit or

short-circuited harness wire

D Malfunction of the engine-ECU

B-32, B-70

Repair

Measure at the ignition coil connectors A-73, A-79. D Disconnect the connector, and

measure at the harness side.

1. Voltage between 1 and earth (Ignition switch: ON)

OK:

2. Voltage between 3 and earth

3. Continuity between 2 and earth

Check the following connectors:

A-73, A-79

Check the trouble symptom.

To the next page

Battery positive voltage

(Engine: Cranking)

OK:

0.5 - 4.0 V

OK:

Continuity

Repair

1. NG

2. NG

3. NG

Check the following connector:

A-107

Check the trouble symptom. Check the harness wire between the

Check the following connector:

B-37

Check the trouble symptom.

Check the harness wire between the engine-ECU and ignition coil connector.

Replace the engine-ECU.

Check the harness wire between the ignition coil connector and ground, and repair if necessary.

Repair

ignition coil and ignition failure sensor connector, and repair if necessary.

Repair

13A-64

From the previous page

Measure at the ignition failure sensor connector A-107. D Disconnect the connector and measure at the harness side.

1. Voltage between 2 and earth (Ignition switch: ON)

OK:

4 V or more

Continuity

2. Continuity between 1 and earth

MPI <4G1> -

Troubleshooting

1. NG

Check the following connector:

Check the trouble symptom.

There is an open or short-circuit the ignition signal output harness of the ignition failure sensor, so check and repair the harness.

B-35

Repair

Measure at the engine-ECU connector B-35.

D Measure with the connector connected. D Voltage between 58 and earth

(Engine: Cranking or 3,000 r/min)

OK:

0.3 - 3.0 V

Replace the engine-ECU.

2. NG

Check the harness wire between the ignition failure sensor and earth, and repair if necessary.

Check the following connector:

Check the trouble symptom.

Check the harness wire between the engine-ECU and the ignition failure sensor connector.

Replace the ignition failure sensor .

A-107

Repair

MPI <4G1> -

Troubleshooting

13A-65

DATA LIST REFERENCE TABLE

NOTE *1: In a new vehicle [driven approximately 500 km or less], the air intake plenum pressure is sometimes

10 % higher than the standard pressure.

*2: The injector drive time represents the time when the cranking speed is at 250 r/min or below when

the power supply voltage is 11 V.

*3: In a new vehicle [driven approximately 500 km or less], the injector drive time is sometimes 10 %

longer than the standard time.

*4: In a new vehicle [driven approximately 500 km or less], the step of the stepper motor is sometimes

30 steps greater than the standard value.

Item No.

11 Oxygen

13 Intake air

Inspection item

sensor (front)

temperature sensor

Inspection contents Normal condition Inspection

procedure No.

Engine: After having

warmed up

Air/fuel mixture is made leaner when

made leaner when decelerating, and is made richer when racing.

Engine: After having

warmed up

The oxygen sensor signal is used to check the air/fuel mixture ratio, and control condition is also checked by the ECU.

Ignition switch: ON or with engine running

When at 4,000 r/min, engine is suddenly decelerated

When engine is suddenly raced

Engine is idling 400 mV or less

2,500 r/min

When intake air temperature is

-20_C

When intake air temperature is 0_C

200 mV or less Code No.

600 - 1,000 mV

(Changes) 600 - 1,000 mV

-20_C Code No.

0_C

P0130

P0110

Reference page

13A-19

13A-12

When intake air temperature is 20_C

When intake air temperature is 40_C

When intake air temperature is 80_C

14 Throttle Ignition switch: ON Set to idle position 300 - 1,000 mV Code No. 13A-16

position sensor

Gradually open Increases in

Open fully 4,500 - 5,500 mV

20_C

40_C

80_C

P0120

proportion to throttle opening angle

13A-66

MPI <4G1> -

Troubleshooting

Item No.

16 Power

18 Cranking

21 Engine

Inspection item

supply voltage

signal

signal (ignition switch-ST)

coolant temperature sensor

Inspection contents Normal condition Inspection

procedure No.

Ignition switch: ON System voltage Procedure

No. 25

Ignition switch: ON Engine: Stopped OFF Procedure

No. 27

Engine: Cranking ON

Ignition switch: ON or with engine running

When engine coolant temperature is - 20_C

When engine coolant temperature is 0_C

When engine coolant temperature is 20_C

When engine coolant temperature is 40_C

-20_C Code No.

P0115

0_C

20_C

40_C

Reference page

13A-59

13A-61

13A-13

22 Crank angle

sensor

D Engine: Cranking D Tachometer:

Connected

D Engine: Idling D Idle position

switch: ON

When engine coolant temperature is 80_C

Compare the engine speed readings on the tachometer and the MUT-II.

When engine coolant temperature is - 20_C

When engine coolant temperature is 0_C

When engine coolant temperature is 20_C

When engine coolant temperature is 40_C

When engine coolant temperature is 80_C

80_C

Accord Code No.

P0335

1,475 - 1,675 r/min

1,345 - 1,545 r/min

1,200 - 1,400 r/min

1,025 - 1,225 r/min

650 - 850 r/min

13A-29

24 Vehicle

speed sensor

Drive at 40 km/h Approximately 40

km/h

Code No. P0500

13A-35

MPI <4G1> -

Troubleshooting

13A-67

Item No.

27 Power

28 A/C switch Engine: Idling

32 V acuum

Inspection item

steering fluid pressure switch

sensor*

Inspection contents Normal condition Inspection

Engine: Idling Steering wheel

(when A/C switch is

(when A/C switch is ON, A/C compressor should be operating.)

D Engine coolant

temperature: 80 95_C

D Lamps, electric

cooling fan and all accessories: OFF

D Transmission:

Neutral

D Ignition switch: ON

procedure No.

OFF Procedure

stationary

Steering wheel turning

A/C switch: OFF OFF Procedure

A/C switch: ON ON

Engine: Stopped (At altitude of 0 m)

Engine: Stopped (At altitude of 600 m)

Engine: Stopped (At altitude of 1,200 m)

Engine: Stopped (At altitude of 1,800 m)

Engine: Idling 24.3 - 37.7 kPa

101 kPa Code No.

95 kPa

88 kPa

81 kPa

No. 28

No. 29

P0105

Reference page

13A-61

13A-62

13A-10

41 Injectors*

When engine is suddenly raced

Engine: Cranking When engine

coolant temperature is 0_C (injection is carried out for all cylinders simultaneously)

When engine coolant temperature is 20_C

When engine coolant temperature is 80_C

Increases

13 - 23 ms - -

26 - 46 ms

8 - 12 ms

13A-68

MPI <4G1> -

Troubleshooting

Item No.

41 Injectors*

44 Ignition

45 ISC

item

coils and power transistors (The timing lamp is

(stepper) motor position*

D Engine coolant

temperature: 80 – 95_C

D Lamps, electric

cooling fan and all

cooling fan and all accessories: OFF

D Transmission:

Neutral

D Engine: After

having warmed up

D Timing lamp is set.

set in order to check actual ignition timing.)

D Engine coolant

temperature:

80 - 95_C

D Lamps, electric

cooling fan and all accessories: OFF

accessories: OFF

D Transmission:

Neutral

D Engine: Idling D When A/C switch is

ON, A/C compressor should be operating

Normal conditionInspection contentsInspection

Engine is idling 1.7 - 2.9 ms - -

2,500 r/min 1.4 - 2.6 ms

When engine is suddenly raced

Engine is idling 0-20_BTDC - -

2,500 r/min 19 - 39 _BTDC

A/C switch: OFF 2 - 25 STEP - -

A/C switch: OFF ® ON

Increases

Increases by 10 - 70 steps

Inspection procedure No.

Reference page

49 A/C relay Engine: After having

warmed up/Engine is idling

59 Oxygen

sensor (rear)

D Transmission:

2nd gear

D Drive with throttle

widely open

A/C switch: OFF OFF (Compressor

clutch is not operating)

A/C switch: ON ON (Compressor

clutch is operating)

3,500 r/min 600 - 1,000 mV Code No.

Procedure No. 29

P0136

13A-62

13A-22

MPI <4G1> -

Troubleshooting

13A-69

Item No.

81 Long-term

82 Short-term

87 Calculation Engine: Warm Engine: Idling 20 - 33 % - -

88 Fuel control Engine: Warm 2,500 r/min Closed loop Code No. 13A-18

A1 Oxygen

item

fuel compensation

load value

condition

sensor (front)

Engine: Warm, 2,500 r/min without any load (during closed loop)

2,500 r/min 20 - 33 %

When engine is suddenly raced

Engine: After having

warmed up

Air/fuel mixture is made leaner when decelerating, and is made richer when racing.

When at 4,000 r/min, engine is suddenly decelerated

When engine is sudden racing

Normal conditionInspection contentsInspection

-12.5 - 12.5 % Code No.

-17 - 17 % Code No.

Open loop - drive condition

0.2 V or less Code No.

0.6 - 1.0 V

Inspection procedure No.

P0170

P0125

P0130

Reference page

13A-25

13A-19

Engine: After having

warmed up

The oxygen sensor signal is used to check the air/fuel mixture ratio, and control condition is also checked by the engine-ECU.

A2 Oxygen

sensor (rear)

8A Throttle D Ignition switch: ON Set to idle position 6 - 20 % Code No. 13A-16

position sensor (Throttle opening angle)

D Transmission:

2nd gear

D Drive with throttle

widely open

Engine is idling 0.4 V or less

(Changes)

0.6 - 1.0 V

2,500 r/min

3,500 r/min 0.6 - 1.0 V Code No.

P0136

P0120

Gradually open Increase in

proportion to throttle opening angle

Open fully 80 - 100 %

13A-22

13A-70

MPI <4G1> -

ACTUATOR TEST REFERENCE TABLE

Troubleshooting

Item No.

01 Injectors Cut fuel to No. 1

02 Cut fuel to No. 2

03 Cut fuel to No. 3

04 Cut fuel to No. 4

07 Fuel pump Fuel pump

Inspection item

Drive contents Inspection contents Normal condition Inspection

injector

operates and fuel is recirculated.

Engine: After having warmed up/Engine is idling

(Cut the fuel supply to each injector in turn and check cylinders which don’t affect idling.)

D Engine:

Cranking

D Fuel

pump: Forced driving Inspect according to both the above conditions.

Pinch the return hose with fingers to feel the pulse of the fuel being recirculated.

Listen near the fuel tank for the sound of fuel pump operation.

procedure No.

Idling condition becomes different (becomes unstable).

Pulse is felt. Procedure

Sound of operation is heard.

Code No. P0201

Code No. P0202

Code No. P0203

Code No. P0204

No. 26

Reference page

13A-26

13A-60

08 Purge

control solenoid valve

10 EGR

control solenoid valve

20 Condenser

fan

21 Radiator

fan

Solenoid valve turns from OFF to ON.

Drive the fan motors (condenser)

Drive the fan motors (radiator)

Ignition switch: ON Sound of operation

can be heard when solenoid valve is driven.

Ignition switch: ON Sound of operation

can be heard when solenoid valve is driven.

D Ignition switch: ON D A/C switch: ON

D Ignition switch: ON Fan motor runs Procedure

Fan motor runs Procedure

Code No. P0443

Code No. P0403

No. 23

13A-34

13A-32

13A-58

Mitsubishi Lancer 2001 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual