Mitsubishi Lancer 2006 User Manual
GROUP INDEX
LANCER
WORKSHOP MANUAL
SUPPLEMENT
FOREWORD
This Workshop manual contains procedures for
service mechanics, including removal, disassembly,
inspection, adjustment, reassembly and installation.
Use the following manuals in combination with this
manual as required.
General . . . . . . . . . . . . . . . . . . . . . . . .
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . .
00
13
TECHNICAL INFORMATION MANUAL
PYME0302
PYME0302-A
PYME0302-B
WORKSHOP MANUAL
CHASSIS GROUP PWME0302
PWME0302-A
PWME0302-B
BODY REPAIR MANUAL
PBME0302
PBME0302-A
PBME0302-B
PARTS CATALOGUE
B606K006A_
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 Oct. 2005
GROUP 00
GENERAL
CONTENTS
VEHICLE IDENTIFICATION . . . . . . . 00-2 GENERAL DATA AND
SPECIFICATIONS . . . . . . . . . . . . . . . 00-3
00-1
00-2
VEHICLE IDENTIFICATION
GENERAL
VEHICLE IDENTIFICATION
M1001000401448
MODELS
Model code Engine model Price class Transmission model Fuel supply
system
CS9A SRHML6 4G63-DOHC (1,997 mL) Intense F4A4B
<2WD, 4A/T>
No. Item Content
MODEL CODE
CS 9 W L
123
LNHM 6
456789
AC303950
AC
1 Development CS: MITSUBISHI LANCER
2 Engine type 9: 1,997mL
3 Sort A: Passenger car
4 Body style S: 4-door sedan
5 Transmission
type
6 Trim level H: Intense
7 Specification
engine feature
8 Steering wheel
location
R: 4-speed automatic
transmission
M: MPI-DOHC
L: Left hand
MPI
9 Destination 6: For Europe
GENERAL
GENERAL DATA AND SPECIFICATIONS
GENERAL DATA AND SPECIFICATIONS
8
7
1
2
3465
00-3
M1001000901197
9
Items CS9A
SRHML6
Vehicle dimensions mm Front track 1 1,470
Overall width 2 1,715
Front overhang 3 965
Wheel base 4 2,600
Rear overhang 5 970
Overall length 6 4,535
Ground clearance (unladen) 7 135
Overall height (unladen) 8 1,415
Rear track 9 1,470
Vehicle weight kg Kerb weight 1,295
Max. gross vehicle weight 1,770
Max. axle weight rating-front 930
Max. axle weight rating-rear 840
Max. trailer weight With brake 1,000
Without brake 400
Max. trailer-nose weight 60
AC303990
AB
Seating capacity 5
Engine Model code 4G63
To ta l d i spl ac em en t mL 1,997
Maximum output kW/r/min 99/5,750
Maximum torque N⋅m/r/min 176/4,500
Transmission Model code F4A4B
Type 4-speed automatic
Fuel system Fuel supply system MPI
Maximum speed km/h 187
Minimum turning radius m 5.7
NOTES
13D-1
MULTIPOINT FUEL
INJECTION (MPI)
<4G63>
CONTENTS
GENERAL 2.................................
Outline of Change 2............................
GENERAL INFORMATION 3...................
SERVICE SPECIFICATIONS 6.................
SEALANT 6..................................
SPECIAL TOOLS 7...........................
TROUBLESHOOTING 10......................
ON-VEHICLE SERVICE 90....................
Throttle Body (Throttle Valve Area)
Cleaning 90...................................
Throttle Position Sensor Adjustment 90............
Basic Idle Speed Adjustment 91..................
Fuel Pressure Test 92...........................
Component Location 95.........................
Engine Control Relay Continuity Check 96.........
Fuel Pump Relay Continuity Check 96.............
Intake Air Temperature Sensor Check 97..........
Engine Coolant Temperature Sensor Check 98.....
Throttle Position Sensor Check 98................
Oxygen Sensor Check 99.......................
Injector Check 101..............................
Idle Speed Control (ISC) Servo (Stepper Motor)
Check 102.....................................
Purge Control Solenoid Valve Check 104..........
EGR Control Solenoid Valve Check 104...........
13D-2
MPI <4G63> ï General
GENERAL
OUTLINE OF CHANGE
Following service procedures have been established due to the addition of vehicles with 4G63-MPI engine
for Russia.
MPI <4G63> ï General Information
GENERAL INFORMATION
13D-3
The Multipoint Fuel Injection System consists
of sensors which detect the engine conditions,
the engine-A/T-ECU which controls the system
based on signals from these sensors, and
actuators which operate under the control of
the engine-A/T-ECU. The engine-A/T-ECU
FUEL INJECTION CONTROL
The injector drive times and injection timing
are controlled so that the optimum air/fuel
mixture is supplied to the engine to correspond
to the continually-changing engine operation
conditions.
A single injector is mounted at the intake port
of each cylinder. Fuel is sent under pressure
from the fuel tank by the fuel pump, with the
pressure being regulated by the fuel pressure
regulator. The fuel thus regulated is distributed
to each of the injectors.
Fuel injection is normally carried out once for
each cylinder for every two rotations of the
crankshaft. The firing order is 1ï3ï4ï2. This
is called sequential fuel injection. The
carries out activities such as fuel injection
control, idle speed control and ignition timing
control. In addition, the engine-A/T-ECU is
equipped with several diagnosis modes which
simplify troubleshooting when a problem
develops.
engine-A/T-ECU provides a richer air/fuel
mixture by carrying out “open-loop” control
when the engine is cold or operating under
high load conditions in order to maintain engine
performance. In addition, when the engine is
warm or operating under normal conditions,
the engine-A/T-ECU controls the air/fuel mixture
by using the oxygen sensor signal to carry out
“closed-loop” control in order to obtain the
theoretical air/fuel mixture ratio that provides
the maximum cleaning performance from the
three way catalyst.
IDLE AIR CONTROL
The idle speed is kept at the optimum speed
by controlling the amount of air that bypasses
the throttle valve in accordance with changes
in idling conditions and engine load during
idling. The engine-A/T-ECU drives the idle
speed control motor to keep the engine running
at the pre-set idle target speed in accordance
with the engine coolant temperature and air
IGNITION TIMING CONTROL
The power transistor located in the ignition
primary circuit turns ON and OFF to control
the primary current flow to the ignition coil. This
controls the ignition timing in order to provide
the optimum ignition timing with respect to the
SELF-DIAGNOSIS FUNCTION
D When an abnormality is detected in one
of the sensors or actuators related to
emission control, the engine warning lamp
(check engine lamp) illuminates as a
warning to the driver.
D When an abnormality is detected in one
of the sensors or actuators, a diagnosis
conditioner load. In addition, when the air
conditioner switch is turned off and on while
the engine is idling, the idle speed control motor
operates to adjust the throttle valve bypass
air amount in accordance with the engine load
conditions in order to avoid fluctuations in the
engine speed.
engine operating conditions. The ignition timing
is determined by the engine-A/T-ECU from the
engine speed, intake air volume, engine coolant
temperature and atmospheric pressure.
code corresponding to the abnormality is
output.
D The RAM data inside the engine-A/T-ECU
that is related to the sensors and actuators
can be read by means of the M.U.T.-II/III.
In addition, the actuators can be
force-driven under certain circumstances.
13D-4
Throttl
Throttl
60
Inject
tificati
k
HDA250E
MPI <4G63> ï General InformationMPI <4G63> ï General Information
OTHER CONTROL FUNCTIONS
1. Fuel Pump Control
3. Fan Motor Control
Turns the fuel pump relay ON so that current
is supplied to the fuel pump while the engine
is cranking or running.
2. A/C Relay Control
Turns the compressor clutch of the A/C
ON and OFF.
4. Purge Control Solenoid Valve Control
5. EGR Control Solenoid Valve Control
GENERAL SPECIFICATIONS
Item Specification
The revolutions of the radiator fan and
condenser fan are controlled in response to
the engine coolant temperature and vehicle
speed.
ebody
Engine-A/TECU
Sensors
ebore mm
Throttle position sensor Variable resistor type
Idle speed control servo Stepper motor type
Identification No. E6T37983
Air flow sensor Karman vortex type
Barometric pressure sensor Semiconductor type
Intake air temperature sensor Thermistor type
Engine coolant temperature sensor Thermistor type
Oxygen sensor Zirconia type
Inhibitor switch Contact switch type
Camshaft position sensor Hall element type
Crank angle sensor Hall element type
Detonation sensor Piezoelectric type
Power steering fluid pressure switch Contact switch type
Actuators
Fuel pressure
regulator
Engine control relay Contact switch type
Fuel pump relay Contact switch type
Injector type and number Electromagnetic type, 4
oriden
EGR control solenoid valve Duty cycle type solenoid valve
Purge control solenoid valve Duty cycle type solenoid valve
Regulator pressure kPa 328
on mar
MPI <4G63> ï General Information
MULTI-POINT FUEL INJECTION SYSTEM DIAGRAM
13D-5
L1 Oxygen sensor (front)
L2 Oxygen sensor (rear)
L3 Air flow sensor
L4 Intake air temperature sensor
L5 Throttle position sensor
L6 Camshaft position sensor
L7 Crank angle sensor
L8 Barometric pressure sensor
L9 Engine coolant temperature sensor
L10 Detonation sensor
D Power supply
D Ignition switch-IG
D Ignition switch-ST
D A/C switch
D A/C load signal
D Power steering fluid pressure switch
D Alternator FR terminal
D Vehicle speed sensor
L6 Camshaft position sensor
Engine-A/T-ECU
L5 Throttle position
sensor
l1 Injector
l2 Idle speed control servo
(Stepper motor)
l3 EGR control solenoid valve
l4 Purge control solenoid valve
D Engine control relay
D Fuel pump relay
D A/C compressor relay
D Ignition coil
D Fan controller
D Air flow sensor filter reset signal
D Engine warning lamp
D Diagnosis output
D Alternator G terminal
D Oxygen sensor (front) heater
D Oxygen sensor (rear) heater
D Tachometer
L4 Intake air temperature sensor
l2 Idle speed control servo
(Stepper motor)
L3 Air flow sensor
L8 Barometric
pressure sensor
Fuel pressure
regulator
To
fuel tank
L1 Oxygen sensor
(front)
Catalytic
converter
From
fuel pump
l1 Injector
L9 Engine coolant
temperature sensor
L10 Detonation sensor
L7 Crank angle sensor
L2 Oxygen sensor (rear)
Catalytic converter
EGR valve
l3 EGR control
solenoid valve
Air
M
AM
Canister
l4 Purge control
solenoid valve
13D-6
k
:
k
:
t
20_C)
:
MPI <4G63> ï Service Specifications/Sealant
SERVICE SPECIFICATIONS
Items Specifications
Basic idle speed r/min 750 r 50
Throttle position sensor adjusting voltage mV 535 ï 735
Throttle position sensor resistance k: 3.5 ï 6.5
Idle speed control servo coil resistance (at 20_C) : 28 ï 33
Intake air temperature sensor
resistance
Engine coolant temperature
sensor resistance
Oxygen sensor output voltage (at racing) V 0.6 ï 1.0
Oxygen sensor heater
resistance(a
_
ï20_C 13 ï 17
0_C 5.3 ï 6.7
20_C 2.3 ï 3.0
40_C 1.0 ï 1.5
60_C 0.56 ï0.76
80_C 0.30 ï 0.42
ï20_C 14 ï 17
0_C 5.1 ï 6.5
20_C 2.1 ï 2.7
40_C 0.9 ï 1.3
60_C 0.48 ï 0.68
80_C 0.26 ï 0.36
front 4.5 ï 8.0
rear 11 ï 18
Fuel pressure kPa Vacuum hose disconnection 324 ï 343 at kerb idle
Vacuum hose connection Approximately 265 at kerb idle
Injector coil resistance (at 20_C) : 10.5 ï 13.5
SEALANT
Item Specified sealant Remark
Engine coolant temperature sensor
threaded portion
3M Nut Locking Part No. 4171 or equivalent Drying sealant
MPI <4G63> ï Special Tools
SPECIAL TOOLS
Too l Number Name Use
13D-7
MB991502 M.U.T.-II sub
assembly
MB991955
A: MB991824
B: MB991827
C: MB991910
D: MB991911
E: MB991825
F: MB991826
M.U.T.-III sub
assembly
A: Vehicle com-
munication interface (V.C.I.)
B: M.U.T.-III
USB cable
C: M.U.T.-III
main harness A
(Vehicles with
CAN communication system)
D: M.U.T.-III
main harness B
(Vehicles without CAN communication system)
E: M.U.T.-III
measurement
adapter
F: M.U.T.-III
trigger harness
M.U.T.-III sub
assembly
D Reading diagnosis code
D MPI system inspection
D Measurement of fuel pressure
D Reading diagnosis code
D MPI system inspection
D Measurement of fuel pressure
MB991348 Test harness set D Inspection using an oscilloscope
13D-8
Too l Us eNameNumber
MB991709 Test harness D Measurement of voltage during
MPI <4G63> ï Special Tools
troubleshooting
D Inspection using an oscilloscope
D Check of idle speed control servo
MD998478 Test harness
(3-pin, triangle)
MB991536 Check harness for
throttle position
sensor adjustment
MD998464 Test harness
(4-pin, square)
MB991658 Test harness D Measurement of voltage during
D Measurement of voltage during
Troubleshooting
D Inspection using an oscilloscope
D Measurement of voltage during
Troubleshooting
D Adjusting of throttle position sensor
D Measurement of voltage during
Troubleshooting
D Inspection of oxygen sensor (front)
Troubleshooting
D Inspection of oxygen sensor (rear)
A
B
C
D
MB991223
A: MB991219
B: MB991220
C: MB991221
D: MB991222
Harness set
A: Test harness
B: LED harness
C: LED harness
adapter
D: Probe
D Check at the ECU terminals
A: Connector pin contact pressure inspection
B: Power circuit inspection
C: Power circuit inspection
D: Commercial tester connection
Too l Us eNameNumber
MD998709 Adaptor hose Measurement of fuel pressure
MD998742 Hose adaptor
MB991637 Fuel pressure
MB991981 Fuel pressure
MPI <4G63> ï Special Tools
gauge set
gauge set
13D-9
MB992076 Injector test set Checking the spray condition of injectors
MB991607 Injector test
harness
MD998741 Injector test
adaptor
MB991976 Injector test holder
assembly
13D-10
MPI <4G63> ï Troubleshooting
Engine warning lamp
(check engine lamp)
Engine warning lamp inspection items
TROUBLESHOOTING
DIAGNOSIS TROUBLESHOOTING FLOW
Refer to GROUP 00 ï How to Use Troubleshooting/Inspection
Service Point.
NOTE
If the engine-A/T-ECU is replaced, ring antenna with built
in immobilizer-ECU should be replaced, ignition key can be
kept, but must be registered.
DIAGNOSIS FUNCTION
ENGINE WARNING LAMP (CHECK ENGINE LAMP)
If an abnormality occurs in any of the following items related
to the MPI system, the engine warning lamp will illuminate
or flash. If the lamp remains illuminated 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.
Engine-A/T-ECU
Oxygen sensor (front)
Air flow sensor
Intake air temperature sensor
Throttle position sensor
Engine coolant temperature sensor
Crank angle sensor
Camshaft position sensor
Barometric pressure sensor
Detonation sensor
Ignition coil, power transistor unit
Injector
Immobilizer system
Oxygen sensor (rear)
NOTE
If the engine warning lamp illuminates because of a malfunction of the engine-A/T-ECU, communication
between M.U.T.-II/III and the engine-A/T-ECU is impossible. In this case, the diagnosis code cannot
be read.
MPI <4G63> ï Troubleshooting
METHOD OF READING AND ERASING DIAGNOSIS
CODES
Refer to GROUP 00 ï How to Use Troubleshooting/Inspection
Service Points.
INSPECTION USING M.U.T.-II/III DATA 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 M.U.T.-II/III and check
that the abnormal input and output have returned to normal
as a result of the repairs.
3. Erase the diagnosis code memory.
4. Remove the M.U.T.-II/III, and then start the engine again
and carry out a road test to confirm that the problem
has disappeared.
13D-11
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
Air flow 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
Barometric pressure
sensor
Controls as if the intake air temperature is 25_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 fuel into the cylinders in the order 1-3-4-2 with irregular timing.
(However, after the ignition switch is turned to ON, the No. 1 cylinder top dead centre is not
detected at all.)
Controls as if the barometric pressure is 101 kPa.
Detonation sensor Switches the ignition timing from ignition timing for super petrol to ignition timing for standard
petrol.
Ignition coil, power
transistor
Alternator FR terminal Does not control the output of the alternator according to an electrical load. (works as a
Cuts off the fuel supply to cylinders with an abnormal ignition.
normal alternator)
13D-12
MPI <4G63> ï Troubleshooting
INSPECTION CHART FOR DIAGNOSIS CODES
Code No. Diagnosis item Reference page
11 Oxygen sensor (front) system 13D-13
12 Air flow sensor system 13D-15
13 Intake air temperature sensor system 13D-16
14 Throttle position sensor system 13D-18
21 Engine coolant temperature sensor system 13D-20
22 Crank angle sensor system 13D-22
23 Camshaft position sensor system 13D-23
24 Vehicle speed signal system 13D-25
25 Barometric pressure sensor system 13D-26
31 Detonation sensor system 13D-28
41 Injector system 13D-29
44 Ignition coil (power transistor) system 13D-30
54 Immobilizer system 13D-31
59 Oxygen sensor (rear) system 13D-32
64 Alternator FR terminal system 13D-34
NOTE
1. Do not replace the engine-A/T-ECU until a through terminal check reveals there are no short/open
circuit.
2. Check that the engine-A/T-ECU earth circuit is normal before checking for the cause of the problem.
MPI <4G63> ï Troubleshooting
INSPECTION PROCEDURE FOR DIAGNOSIS CODE
Code No. 11 Oxygen sensor (front) system Probable cause
Range of Check
D More than 3 minutes passed after completion of start of engine
D The engine coolant temperature is approximately more than 80_C.
D Intake air temperature 0 ï 55_C.
D The engine speed is more than 1,800 ï 3,500 r/min.
D The volumetric efficiency is 16 ï 60% or more.
Set Conditions
D For 30 seconds, the oxygen sensor output voltage continues to be 0.5 V or
lower, or 0.5 V or higher.
D The Engine-A/T-ECU monitors for this condition once during the drive cycle.
D Malfunction of the oxygen sensor (front)
D Oxygen sensor (front) circuit disconnection,
short-circuit, or connector contact defect.
D Malfunction of the engine-A/T-ECU
13D-13
M.U.T.-II/III Data list
D No. 11 Oxygen sensor (front)
(Refer to P.13D-66.)
NG
Check the following connector:
B-17
OK
Measure at the B-17 oxygen sensor
(front) connector.
D Disconnect connector to measure
at the harness side
D Resistance between terminal No.
2 and earth.
OK: Less than 2 :
OK
Measure at the B-17 oxygen sensor
(front) connector.
D Using the test harness
(MD998464), connect the
connector, and measure at the
pickup harness.
D Engine: After warm-up
(1) Voltage between terminal No. 2
and earth
OK: Less than 0.5 V
(2) Voltage between terminal No. 4
and the earth
D At rapid deceleration from 4,000
r/min
OK: 200 mV or less
D During rapid racing
OK: 600 ï 1,000 mV
OK
To the next page
OK
NG
NG
(1) NG
(2) NG
Intermittent malfunction
(Refer to GROUP 00 ï Points to Note
for Intermittent Malfunctions.)
Repair
Check the following connector:
C-124
OK
Check the harness between the
oxygen sensor (front) and
engine-A/T-ECU.
OK
M.U.T.-II/III Data list
D No. 11 Oxygen sensor (front)
(Refer to P.13D-66.)
OK
Intermittent malfunction
(Refer to GROUP 00 ï Points to Note
for Intermittent Malfunctions.)
Check the following connector:
C-124
OK
Check the harness between the
oxygen sensor (front) and
engine-A/T-ECU.
Check the oxygen sensor (front).
(Refer to P.13D-99.)
OK
Check the following connector:
C-126
OK
Check the harness between the
oxygen sensor (front) and
engine-A/T-ECU.
NG
NG
NG
NG
NG
NG
NG
NG
Repair
Repair
Replace the engine-A/T-ECU.
Repair
Repair
Replace the oxygen sensor (front).
Repair
Repair
13D-14
From the previous page
OK
Measure at the C-126 engine-A/T-ECU
connector.
D Measure the engine-A/T-ECU
terminal voltage.
D Engine: After warm-up
D Voltage between terminal No. 71
and earth.
D At rapid deceleration from 4,000
r/min
OK: 200 mV or less
D During rapid racing
OK: 600 ï 1,000 mV
OK
Check the following connectors:
C-124, C-126
OK
M.U.T.-II/III Data list
D No. 11 Oxygen sensor (front)
(Refer to P.13D-66.)
OK
Intermittent malfunction
(Refer to GROUP 00 ï Points to Note
for Intermittent Malfunctions.)
MPI <4G63> ï Troubleshooting
NG
NG
NG
Check the following connector:
C-126
OK
Check and repair the harness between
the oxygen sensor (front) and
engine-A/T-ECU.
Repair
Replace the engine-A/T-ECU.
NG
Repair
MPI <4G63> ï Troubleshooting
Code No. 12 Air flow sensor system Probable cause
Range of Check
D The engine speed is more than 500 r/min
Set Condition
D The sensor output frequency is less than 3.3 Hz for 4 seconds.
D Malfunction of the air flow sensor
D Air flow sensor circuit disconnection, short-circuit,
or connector contact defect
D Malfunction of the engine-A/T-ECU
13D-15
M.U.T.-II/III Data list
D No. 12 Air flow sensor
(Refer to P.13D-66.)
NG
Check the following connector:
B-08
OK
Measure at the B-08 air flow sensor
connector.
D Disconnect the connector to
measure at the harness side
(1) Voltage between terminal No. 3
and earth
(Ignition switch: ON)
OK: 4.9 ï 5.1 V
(2) Voltage between terminal No. 4
and earth
(Ignition switch: ON)
OK: System voltage
(3) Resistance between terminal No.
5 and earth
OK: Less than 2 :
OK
NG
(1) NG
Intermittent malfunction
(Refer to GROUP 00 ï Points to Note
for Intermittent Malfunctions.)
Repair
Measure at the C-124 engine-A/T-ECU
connector.
D Measure the voltage of the
engine-A/T-ECU terminal.
D Ignition switch: ON
D Voltage between terminal No. 65
and earth.
OK: 4.9 ï 5.1 V
NG
Check the following connector:
C-124
OK
Check the harness between the air
flow sensor and engine-A/T-ECU.
OK
M.U.T.-II/III Data list
D No. 12 Air flow sensor
(Refer to P.13D-66.)
OK
Intermittent malfunction
(Refer to GROUP 00 ï Points to Note
for Intermittent Malfunctions.)
OK
NG
NG
NG
Check the following connector:
C-124
OK
Check and repair the harness between
the air flow sensor and engine-A/TECU.
Repair
Repair
Replace the engine-A/T-ECU.
NG
Repair
To the next page
OK
(2) NG
(3) NG
Check the following connector:
B-16X
OK
Check the harness between the air
flow sensor and engine control relay.
Check the following connector:
C-122
OK
Check the harness between the air
flow sensor and engine-A/T-ECU.
OK
M.U.T.-II/III Data list
D No. 12 Air flow sensor
(Refer to P.13D-66.)
OK
Intermittent malfunction
(Refer to GROUP 00 ï Points to Note
for Intermittent Malfunctions.)
NG
NG
NG
NG
Repair
Repair
Repair
Replace the engine-A/T-ECU.
13D-16
From the previous page
OK
Measure at the B-08 air flow sensor
connector.
D Using the test harness
(MB991709), connect the
connector, and measure at the
pickup.
D Ignition switch: ON
D Voltage between terminal No. 7
and earth.
OK: 7 ï 8V
OK
MPI <4G63> ï Troubleshooting
NG
Check the following connector:
C-122
OK
Check the harness between the air
flow sensor and engine-A/T-ECU.
OK
Replace the air flow sensor.
NG
NG
Repair
Repair
Measure at the B-08 air flow sensor
connector.
D Using the test harness
(MB991709), connect the
connector, and measure at the
pickup harness.
D Voltage between terminal No. 7
and earth.
OK: Engine: idle
0 ï 1V
Engine: 3,000 r/min
6 ï 9V
OK
Measure the output waveform at the
B-08 air flow sensor connector (using
an analyzer).
D Using the test harness
(MB991709), connect the
connector, and measure at the
pickup harness.
D Engine: Idle
D Voltage between terminal No. 3
and earth.
OK: Output the waveform as
shown on P.13D-79 (inspection procedure by analyzer), and check that there
is noise in the output waveform.
OK
NG
NG
Check the following connector:
C-122
OK
Check the harness between air flow
sensor and engine-A/T-ECU.
OK
M.U.T.-II/III Data list
D No. 12 Air flow sensor
(Refer to P.13D-66.)
OK
Intermittent malfunction
(Refer to GROUP 00 ï Points to Note
for Intermittent Malfunctions.)
Replace the air flow sensor.
Check the trouble symptom.
NG
Check the following connectors:
B-16X, C-122, C-124
OK
Check the harness between the air
flow sensor and engine control relay.
OK
Check the harness between the air
flow sensor and engine-A/T-ECU.
NG
NG
NG
OK
NG
NG
Repair
Repair
Replace the engine-A/T-ECU.
End
Repair
Repair
M.U.T.-II/III Data list
D No. 12 Air flow sensor
(Refer to P.13D-66.)
OK
Intermittent malfunction
(Refer to GROUP 00 ï Points to Note
for Intermittent Malfunctions.)
NG
Replace the engine-A/T-ECU.
Code No. 13 Intake air temperature sensor system Probable cause
Range of Check
D 60 seconds after the ignition switch is set to the “ON” position, or after the
completion of the start of engine.
Set Conditions
D The sensor output voltage is more than 4.6 V for 4 seconds (Equivalent to intake
air temperature less than ï40_C)
or
D The sensor output voltage is less than 0.2 V for 4 seconds (Equivalent to intake
air temperature of more than 120_C)
D Malfunction of the intake air temperature sensor
D Intake air temperature sensor circuit disconnection,
short-circuit, or connector contact defect
D Malfunction of the engine-A/T-ECU
MPI <4G63> ï Troubleshooting
13D-17
M.U.T.-II/III Data list
D No. 13 Intake air temperature
sensor
OK: Ambient temperature (More
or less the same as the air
temperature)
NG
Check the following connector:
B-08
OK
Check the intake air temperature
sensor alone. (Refer to P.13D-97.)
OK
Measure at the B-08 air flow sensor
connector.
D Disconnect the connector to
measure at the harness side
(1) Resistance between terminal No.
5 and earth
OK: Less than 2 :
(2) Voltage between terminal No. 6
and earth
(Ignition switch: ON)
OK: 4.5 ï 4.9 V
OK
NG
NG
(1) NG
Intermittent malfunction
(Refer to GROUP 00 ï Points to Note
for Intermittent Malfunctions.)
Repair
Replace the intake air temperature
sensor.
Check the following connector:
C-122
OK
Check the harness between the air
flow sensor and engine-A/T-ECU.
OK
M.U.T.-II/III Data list
D No. 13 Intake air temperature
sensor
OK: Ambient temperature (More
or less the same as the air
temperature)
OK
Intermittent malfunction
(Refer to GROUP 00 ï Points to Note
for Intermittent Malfunctions.)
NG
NG
NG
Repair
Repair
Replace the engine-A/T-ECU.
To the next page
OK
(2) NG
Measure at the C-124 engine-A/T-ECU
connector.
D Measure the engine-A/T-ECU
terminal voltage.
D Disconnect the B-08 air flow
sensor connector.
D Ignition switch: ON
D Voltage between terminal No. 64
and earth.
OK: 4.5 ï 4.9 V
NG
Check the following connector:
C-124
OK
Check the harness between the air
flow sensor and engine-A/T-ECU.
OK
M.U.T.-II/III Data list
D No. 13 intake air temperature
sensor
OK: Ambient temperature (More
or less the same as air
temperature)
OK
Intermittent malfunction
(Refer to GROUP 00 ï Points to Note
for Intermittent Malfunctions.)
OK
NG
NG
NG
Check the following connector:
C-124
OK
Check and repair the harness between
the air flow sensor and engine-A/TECU.
Repair
Repair
Replace the engine-A/T-ECU.
NG
Repair
13D-18
From the previous page
OK
Measure at the B-08 air flow sensor
connector.
D Using the test harness
(MB991709), connecting only
connector terminals No. 5 and
No. 6, and measure at the
pickup harness.
D Ignition switch: ON
D Voltage between terminal No. 6
and earth.
OK: Ambient temperature ï20_C
3.8 ï 4.4 V
Ambient temperature 0_C
3.2 ï 3.8 V
Ambient temperature 20_C
2.3 ï 2.9 V
Ambient temperature 40_C
1.5 ï 2.1 V
Ambient temperature 60_C
0.8 ï 1.4 V
Ambient temperature 80_C
0.4 ï 1.0 V
OK
M.U.T.-II/III Data list
D No. 13 intake air temperature
sensor
OK: Ambient temperature (More
or less the same as the air
temperature)
OK
Intermittent malfunction
(Refer to GROUP 00 ï Points to Note
for Intermittent Malfunctions.)
MPI <4G63> ï Troubleshooting
NG
NG
Check the following connectors:
C-122, C-124
OK
Check and repair the harness between
the air flow sensor and engine-A/TECU.
Replace the engine-A/T-ECU.
NG
Repair
Code No. 14 Throttle position sensor system Probable cause
Range of Check
D 60 seconds after the ignition switch is set to the “ON” position, or after the
completion of start of engine.
Set Conditions
D The sensor output voltage is 4.3 V or more for 4 seconds and volumetric
efficiency 40 % or less.
or
D The sensor output voltage is 0.2 V or less for 2 seconds
M.U.T.-II/III Data list
14 Throttle position sensor
(Refer to P.13D-66, DATA LIST
REFERENCE TABLE.)
NG
Check the throttle position sensor.
(Refer to P.13D-98.)
OK
Check the following connector:
B-06
OK
To the next page
OK
NG
NG
Intermittent malfunction
(Refer to GROUP 00 ï Points to
Note for Intermittent Malfunctions.)
Replace
Repair
D Malfunction of the throttle position sensor
D Improper connector contact, open circuit or
short-circuited harness wire
D Malfunction of the engine-A/T-ECU
From the previous page
OK
Measure at throttle position sensor
connector B-06.
D Disconnect the connector and
measure at the harness side.
(1) Voltage between terminal 1 and
earth
(Ignition switch: ON)
OK: 4.9 ï 5.1 V
(2) Resistance between terminal 4
and earth
OK: 2 : or less
MPI <4G63> ï Troubleshooting
(1) NG
Measure at engine-A/T-ECU
connector C-124.
D Measure the voltage at the
engine-A/T-ECU terminals.
D Ignition switch: ON
D Voltage between terminal 46 and
earth
OK: 4.9 ï 5.1 V
NG
Check the following connector:
C-124
OK
Check the harness wire between the
throttle position sensor and the
engine-A/T-ECU.
OK
Check the trouble symptoms.
OK
NG
NG
NG
13D-19
Check the following connector:
C-124
OK
Check the harness wire between the
throttle position sensor and the
engine-A/T-ECU, and repair if
necessary.
Repair
Repair
Replace the engine-A/T-ECU.
NG
Repair
OK
Measure at throttle position sensor
connector B-06.
D Use test harness (MB991536) to
connect the connector, and
measure at the pick-up harness.
D Ignition switch: ON
(1) Voltage between terminal 1 and
earth
OK: 4.9 ï 5.1 V
(2) Voltage between terminal 4 and
earth
OK: 0.5 V or less
(3) Voltage between terminal 2 and
earth
OK: Accelerator pedal fully re-
leased: 0.335 ï 0.935 V
Accelerator pedal fully depressed: 4.4 ï 5.3 V
OK
To the next page
(2) NG
(1) NG
(2) NG
(3) NG
Check the following connector:
C-124
OK
Check the harness wire between the
throttle position sensor and the
engine-A/T-ECU.
OK
Check the trouble symptoms.
Check the following connector:
C-124
OK
Check the harness wire between the
throttle position sensor and the
engine-A/T-ECU.
Adjust the throttle position sensor.
(Refer to P.13D-98.)
Check the following connector:
C-126
OK
Check the harness wire between the
throttle position sensor and the
engine-A/T-ECU, and repair if
necessary.
NG
NG
NG
NG
NG
Repair
Repair
Replace the engine-A/T-ECU.
Repair
Repair
13D-20
From the previous page
OK
Measure at the engine-A/T-ECU
connector C-126
D Measure voltage at the
engine-A/T-ECU terminal.
D Ignition switch: ON
D Voltage between terminal 78 and
earth
OK: Accelerator pedal fully re-
leased: 0.335 ï 0.935 V
Accelerator pedal fully depressed: 4.4 ï 5.3 V
MPI <4G63> ï Troubleshooting
NG
OK
Check the following connector:
C-126
OK
Check the harness wire between the
throttle position sensor and the
engine-A/T-ECU, and repair if
necessary.
Check the following connectors:
C-124, C-126
OK
Check the trouble symptoms.
NG
Replace the engine-A/T-ECU.
NG
NG
Code No. 21 Engine coolant temperature sensor system Probable cause
Range of Check
D 60 seconds after the ignition switch is set to the “ON” position, or after the
completion of start of engine.
Set Conditions
D The sensor output voltage is 4.6 V or more for 4 seconds (equivalent to
ï45_C or lower of engine coolant temperature)
or
D The sensor output voltage is 0.1 V or less for 4 seconds (equivalent to
140_C or higher of engine coolant temperature)
Range of Check
D Engine: After starting
Set Condition
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.
D Malfunction of the engine coolant temperature
sensor
D Open or short circuit in the engine coolant
temperature sensor circuit or loose connector
contact
D Malfunction of the engine-A/T-ECU
Repair
Repair
M.U.T.-II/III Data 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 ï
120_C.
NG
Measure at engine coolant
temperature sensor connector
B-111.
D Disconnect the connector and
measure at the sensor side.
D Resistance between terminals 1
and 2
OK: At 20_C of engine coolant
temperature: 2.1 ï 2.7 k:
At 80_C of engine coolant
temperature:
0.26 ï 0.36 k:
OK
Check the following connector:
B-111
OK
To the next page
OK
NG
NG
Intermittent malfunction
(Refer to GROUP 00 ï Points to
Note for Intermittent Malfunctions.)
Replace
Repair
From the previous page
OK
Measure at engine coolant
temperature sensor connector B-111.
D Disconnect the connector and
measure at the harness side.
(1) Voltage between terminal 1 and
earth
(Ignition switch: ON)
OK: 4.5 ï 4.9 V
(2) Resistance between terminal 2
and earth
OK: 2 : or less
OK
MPI <4G63> ï Troubleshooting
(1) NG
(2) NG
Measure at engine-A/T-ECU
connector C-124.
D Measure the voltage at the
engine-A/T-ECU terminal.
D Disconnect connector B-111.
D Ignition switch: ON
D Voltage between terminal 44 and
earth
OK: 4.5 ï 4.9 V
NG
Check the following connector:
C-124
OK
Check the harness wire between the
engine coolant temperature sensor
and the engine-A/T-ECU.
OK
Check the trouble symptoms.
Check the following connector:
C-124
OK
Check the harness wire between the
engine coolant temperature sensor
and the engine-A/T-ECU.
OK
Check the trouble symptoms.
OK
NG
NG
NG
NG
NG
NG
13D-21
Check the following connector:
C-124
OK
Check the harness wire between the
engine coolant temperature sensor
and the engine-A/T-ECU, and repair
if necessary.
Repair
Repair
Replace the engine-A/T-ECU.
Repair
Repair
Replace the engine-A/T-ECU.
NG
Repair
Measure at engine coolant
temperature sensor connector B-111.
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 ï 3.8 V
At 20_C of engine coolant
temperature: 2.3 ï 2.9 V
At 40_C of engine coolant
temperature: 1.3 ï 1.9 V
At 80_C of engine coolant
temperature: 0.3 ï 0.9 V
OK
Check the trouble symptoms.
NG
NG
Check the engine coolant
temperature sensor.
(Refer to P.13D-98.)
OK
Check the following connector:
C-124
OK
Check the harness wire between the
engine coolant temperature sensor
and the engine-A/T-ECU, and repair
if necessary.
Replace the engine-A/T-ECU.
NG
NG
Repair
Repair
13D-22
MPI <4G63> ï Troubleshooting
Code No. 22 Crank angle sensor system Probable cause
Range of Check
D Engine is cranking
Set Condition
D Sensor output voltage does not change for 4 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 the engine-A/T-ECU
M.U.T.-II/III Data list
22 Crank angle sensor
OK: Refer to P.13D-66, DATA
LIST REFERENCE TABLE.
NG
Check the following connector:
B-116
OK
Measure at the crank angle sensor
connector B-116.
D Disconnect the connector and
measure at the harness side.
(1) The resistance between terminal
1 and earth
OK: 2 : or less
(2) The voltage between terminal 2
and earth
(Ignition switch: ON)
OK: 4.9 ï 5.1 V
(3) The voltage between terminal 3
and earth
(Ignition switch: ON)
OK: System voltage
OK
NG
(1) NG
(2) NG
Intermittent malfunction
(Refer to GROUP 00 ï Points to
Note for Intermittent Malfunctions.)
Repair
Check the harness between the
crank angle sensor and earth, and
repair if necessary.
Measure at the engine-A/T-ECU
connector C-124.
D Measure the voltage at the
engine-A/T-ECU terminal.
D Disconnect the connector B-116
D Ignition switch: ON
D The voltage between terminal 45
and earth
OK: 4.9 ï 5.1 V
NG
Check the following connector:
C-124
OK
Check the harness wire between the
crank angle sensor and the
engine-A/T-ECU.
OK
Check the trouble symptoms.
OK
NG
NG
NG
Check the following connector:
C-124
OK
Check the harness wire between the
crank angle sensor and the
engine-A/T-ECU, and repair if
necessary.
Repair
Repair
Replace the engine-A/T-ECU.
NG
Repair
To the next page
OK
(3) NG
Check the following connector:
B-16X
OK
Check the harness wire between the
crank angle sensor and the engine
control relay, and repair if necessary.
NG
Repair
From the previous page
OK
Use an analyzer to measure the
output waveform at the crank angle
sensor connector B-116.
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.13D-81 (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.
OK
Check the trouble symptoms.
NG
Replace the engine-A/T-ECU.
MPI <4G63> ï Troubleshooting
NG
Check the crank angle sensor vane.
OK
Replace the crank angle sensor.
Check the trouble symptoms.
NG
Check the following connectors:
B-16X, C-124
OK
Check the harness wires between
the crank angle sensor and the
engine-A/T-ECU, crank angle sensor
and the engine control relay, and the
crank angle sensor and earth. Then,
repair if necessary.
NG
NG
13D-23
Replace
Repair
13D-24
MPI <4G63> ï Troubleshooting
Code No. 23 Camshaft position sensor system Probable cause
Range of Check
D During engine cranking and driving
Set Condition
D The sensor output voltage does not change for 4 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 the engine-A/T-ECU
Check the following connector:
B-107
OK
Measure at camshaft position sensor
connector B-107.
D Disconnect the connector and
measure at the harness side.
(1) The voltage between terminal 3
and earth
(Ignition switch: ON)
OK: System voltage
(2) The voltage between terminal 2
and earth
(Ignition switch: ON)
OK: 4.9 ï 5.1 V
(3) The resistance between terminal
1 and earth
OK: 2 : or less
OK
NG
(1) NG
(2) NG
Repair
Check the following connector:
B-16X
OK
Check the harness wire between the
camshaft position sensor connector
and the engine control relay, and
repair if necessary.
Measure at the engine-A/T-ECU
connector C-124.
D Measure the voltage at the
engine-A/T-ECU terminal.
D Disconnect connector B-107.
D Ignition switch: ON
D The voltage between terminal 56
and earth
OK: 4.9 ï 5.1 V
NG
Check the following connector:
C-124
OK
Check the harness wire between the
intermediate connector and the
engine-A/T-ECU.
OK
Check the trouble symptoms.
NG
OK
NG
NG
NG
Repair
Check the following connector:
C-124
OK
Check the harness wire between the
camshaft position sensor connector
and the engine-A/T-ECU, and repair if
necessary.
Repair
Repair
Replace the engine-A/T-ECU.
NG
Repair
Use an analyzer to measure the
output waveform at camshaft position
sensor connector B-107.
D Use test harness (MB991709) to
connect the connector, and
measure at the 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.13D-81 (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.
OK
Check the trouble symptoms.
NG
Replace the engine-A/T-ECU.
(3) NG
NG
OK
Check the harness wire between the
camshaft position sensor connector
and earth, and repair if necessary.
Check the camshaft position sensing
cylinder.
OK
Replace the camshaft position
sensor.
Check the trouble symptoms.
NG
Check the following connectors:
B-16X, C-124
OK
Check the harness wires between the camshaft position sensor connector and the
engine-A/T-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 ï Points to Note for Intermittent Malfunctions.)
NG
NG
Replace
Repair
MPI <4G63> ï Troubleshooting
Code No. 24 Vehicle speed signal system Probable cause
Range of Check
D 60 seconds after the ignition switch is set to the “ON” position, or after the
completion of start of engine.
D The engine speed is more than 2,300 r/min.
D Volumetric efficiency 50 % or more
Set Condition
D The vehicle speed signal does not change for 4 seconds (no pulse signal
input.)
D Malfunction of the output shaft speed sensor
D Open or short circuit in the output shaft speed
sensor circuit or loose connector contact
D Malfunction of the engine-A/T-ECU
13D-25
M.U.T.-II/III Self-Diag code
D Is diagnosis code of automatic transmission system output?
NO
Check the trouble symptoms.
NG
Replace the engine-A/T-ECU.
YES
OK
D Automatic transmission system check
(Refer to GROUP 23B ï Troubleshooting ï Inspection
chart for diagnosis codes)
Intermittent malfunction. (Refer to GROUP 00 ï Points to Note
for Intermittent Malfunctions.)
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