Lexus IS 300 2001 3.0L Workshop Manual

lexus :: Lexus IS 300 L6-3.0L (2JZ-GE) (2001)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations > Component Locations

Instrument Panel

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations > Component Locations > Page 8

Alarm Module: Connector Locations

Body

Ground Location

BI Roof Panel
BJ Front Floor Panel LH
BK Front Floor Panel Center LH
BL Left Quarter Panel LH

Connector Location

BA1 Rear Door No.2 and Floor No.2 Wire (Left Center Pillar)
BB1 Rear Door No.1 and Floor Wire (Right Center Pillar)
BC1 Floor No.2 Wire and Floor Wire (Right Floor Partition Panel RH)
BD1 Sensor Wire and Floor No.2 Wire (Lower Back Panel LH)
BE1 Floor No.2 Wire and Luggage Room Wire (Near the License Plate Light LH)
BF1 Floor No.2 Wire and Luggage Room Wire (Near the License Plate Light RH)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations >

Component Locations > Page 9

IS 300 L6-3.0L (2JZ-GE) (2001)

Body

Connector Location

BG1 Floor No.2 Wire and Front Seat LH Wire (Under the Driver's Seat)
BH1 Floor Wire and Front Seat RH Wire (Under the Front Passenger's Seat)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations >

Component Locations > Page 10

IS 300 L6-3.0L (2JZ-GE) (2001)

Engine Compartment

Ground Location

EA Front Side of the Intake Manifold
EB Center Side of the Intake Manifold
EC

Connector Location

EA1 Engine Wire and Engine Room Main Wire (Inside of the ECU Box)
EA2 Engine Wire and Engine Room Main Wire (Inside of the ECU Box)

Instrument Panel / Center Console

Connector Location

IA1 Instrument Panel Wire and Engine Room Main (Near the Driver Side J/B)
IA2 Instrument Panel Wire and Engine Room Main (Near the Driver Side J/B)
IB1 Instrument Panel Wire and Floor No.2 Wire (Near the Driver Side J/B)
IB2 Instrument Panel Wire and Floor No.2 Wire (Near the Driver Side J/B)
IC1 Engine Room Main Wire and Floor No.2 Wire (Near the Driver Side J/B)
ID1 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IE1 Instrument Panel No.2 Wire and Instrument Panel Wire (Left Side of the Instrument Panel)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations >

Component Locations > Page 11

IS 300 L6-3.0L (2JZ-GE) (2001)

Instrument Panel / Center Console

Connector Location

IF1 Instrument Panel Wire and A/C Sub Wire (Left Side of the Blower Unit)
IF2 Instrument Panel Wire and A/C Sub Wire (Left Side of the Blower Unit)
IG1 Instrument Panel Wire and Engine Room Main (Near the Passenger Side J/B)
IG2 Instrument Panel Wire and Engine Room Main
IH1 Instrument Panel Wire and Floor Wire (Near the Passenger Side J/B)
IH2 Instrument Panel Wire and Floor Wire (Near the Passenger Side J/B)
II1 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations > Component Locations > Page 12

Alarm Module: Ground Locations

Body

Ground Location

BI Roof Panel
BJ Front Floor Panel LH
BK Front Floor Panel RH
BL Left Quarter Panel LH

Connector Location

BA1 Rear Door No.2 and Floor No.2 Wire (Left Center Pillar)
BB1 Rear Door No.1 and Floor Wire (Right Center Pillar)
BC1 Floor No.2 Wire and Floor Wire (Right Floor Partition Panel RH)
BD1 Sensor Wire and Floor No.2 Wire (Lower Back Panel LH)
BE1 Floor No.2 Wire and Luggage Room Wire (Near the License Plate Light LH)
BF1 Floor No.2 Wire and Luggage Room Wire (Near the License Plate Light RH)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations >

Component Locations > Page 13

IS 300 L6-3.0L (2JZ-GE) (2001)

Engine Compartment

Ground Location

EA Front Side of the Intake Manifold
EB Center Side of the Intake Manifold
EC Left Fender Apron

Connector Location

EA1 Engine Wire and Engine Room Main Wire (Inside of the ECU Box)
EA2 Engine Wire and Engine Room Main Wire (Inside of the ECU Box)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations >

Component Locations > Page 14

IS 300 L6-3.0L (2JZ-GE) (2001)

Location Of Ground Points

Ground Location

ID Cowl Side Panel LH
IE Front Floor Panel Center LH
IF Front Floor Panel Center RH
IG Engine Room Main Wire and Driver Side J/B (Left Kick Panel)
IH Cowl Side Panel RH

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations > Component Locations > Page 15

Alarm Module: Splice Locations

Location Of Splice Points

Splice Locations

B1 Roof Wire
B2 Roof Wire
B3 Floor No.2 Wire
B4 Floor No.2 Wire

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations >

Component Locations > Page 16

IS 300 L6-3.0L (2JZ-GE) (2001)

Location Of Splice Points

Splice Locations

B5 Front Seat LH Wire
B6 Front Seat RH Wire

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations >

Component Locations > Page 17

IS 300 L6-3.0L (2JZ-GE) (2001)

Location Of Splice Points

Splice Locations

E1 Engine Room Main Wire
E2 Engine Room Main Wire

E3 Engine Room Main Wire
E4 Engine Room Main Wire
E5 Engine Wire
E6 Engine Wire
E7 Engine Wire
E8 Engine Wire
E9 Engine Wire
E10 Engine Wire
E11 Engine Wire

Location Of Splice Points

Splice Locations

I1 Instrument Panel Wire
I2 Instrument Panel Wire
I3 Instrument Panel Wire
I4 A/C Sub Wire
I5 Engine Room Main Wire

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations > Component Locations > Page 18

Alarm Module: Harness Locations

Body

Ground Location

BI Roof Panel
BJ Front Floor Panel LH
BK Front Floor Panel Center LH
BL Left Quarter Panel LH

Connector Location

BA1 Rear Door No.2 and Floor No.2 Wire (Left Center Pillar)
BB1 Rear Door No.1 and Floor Wire (Right Center Pillar)
BC1 Floor No.2 Wire and Floor Wire (Right Floor Partition Panel RH)
BD1 Sensor Wire and Floor No.2 Wire (Lower Back Panel LH)
BE1 Floor No.2 Wire and Luggage Room Wire (Near the License Plate Light LH)
BF1 Floor No.2 Wire and Luggage Room Wire (Near the License Plate Light RH)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations >

Component Locations > Page 19

IS 300 L6-3.0L (2JZ-GE) (2001)

Body

Connector Location

BG1 Floor No.2 Wire and Front Seat LH Wire (Under the Driver's Seat)
BH1 Floor Wire and Front Seat RH Wire (Under the Front Passenger's Seat)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations >

Component Locations > Page 20

IS 300 L6-3.0L (2JZ-GE) (2001)

Engine Compartment

Ground Location

EA Front Side of the Intake Manifold
EB Center Side of the Intake Manifold
EC

Connector Location

EA1 Engine Wire and Engine Room Main Wire (Inside of the ECU Box)
EA2 Engine Wire and Engine Room Main Wire (Inside of the ECU Box)

Instrument Panel / Center Console

Connector Location

IA1 Instrument Panel Wire and Engine Room Main (Near the Driver Side J/B)
IA2 Instrument Panel Wire and Engine Room Main (Near the Driver Side J/B)
IB1 Instrument Panel Wire and Floor No.2 Wire (Near the Driver Side J/B)
IB2 Instrument Panel Wire and Floor No.2 Wire (Near the Driver Side J/B)
IC1 Engine Room Main Wire and Floor No.2 Wire (Near the Driver Side J/B)
ID1 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IE1 Instrument Panel No.2 Wire and Instrument Panel Wire (Left Side of the Instrument Panel)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations >

Component Locations > Page 21

IS 300 L6-3.0L (2JZ-GE) (2001)

Instrument Panel / Center Console

Connector Location

IF1 Instrument Panel Wire and A/C Sub Wire (Left Side of the Blower Unit)
IF2 Instrument Panel Wire and A/C Sub Wire (Left Side of the Blower Unit)
IG1 Instrument Panel Wire and Engine Room Main (Near the Passenger Side J/B)
IG2 Instrument Panel Wire and Engine Room Main
IH1 Instrument Panel Wire and Floor Wire (Near the Passenger Side J/B)
IH2 Instrument Panel Wire and Floor Wire (Near the Passenger Side J/B)
II1 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Testing and Inspection > Component Tests and General Diagnostics

Alarm Module: Component Tests and General Diagnostics

INSPECT THEFT DETERRENT INDICATOR LIGHT OPERATION

a. Remove the combination meter.b. Disconnect the combination meter connector.c. Check indicator light lights up when connect the positive (+) lead from the battery to terminal B8 and the negative (-) lead to terminal B1 of

combination meter connector.If operation is not as specified, replace the indicator light.

INSPECT THEFT DETERRENT INDICATOR LIGHT CIRCUIT

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Testing and Inspection > Component Tests and General Diagnostics > Page

24

Alarm Module: Pinout Values and Diagnostic Parameters
Automatic Light Control

C11 LIGHT CONTROL SW [COMB.SW]

12 - 16 : Continuity with the light control SW at AUTO position

T5 (A), T6 (B) THEFT DETERRENT ECU

(A) 11, (B) 1 - GROUND: Always approx.12 volts

(A) 10 - GROUND

: Approx. with the ignition SW at position 12 volts ON

(A) 22 - GROUND : Always continuity

Light Turn Off
C11 LIGHT CONTROL SW [COMB.SW]

14 - 16 : Continuity with the light control SW at TAIL or HEAD position13 - 16 : Continuity with the light control SW at HEAD position12 - 16 : Continuity with the light control SW at AUTO position

T5 (A), T6 (B) THEFT DETERRENT ECU

(A) 11, (B) 1 - GROUND: Always approx.12 volts

(A) 10 - GROUND

: Approx. with the ignition SW at position12 volts ON

(A) 22 - GROUND : Always continuity

> Relays and Modules > Relays and Modules - Body and Frame > Heated Mirror Relay > Component Information > Locations

Passenger Side J/B (Part 2)

> Relays and Modules > Relays and Modules - Body and Frame > Sunroof / Moonroof Module > Component Information > Locations

Body

> Relays and Modules > Relays and Modules - Body and Frame > Trunk / Liftgate Relay > Component Information > Locations

Body

> Relays and Modules > Relays and Modules - Brakes and Traction Control > ABS Main Relay > Component Information > Locations

Engine Room No.1 R/B / Engine Room No.2 R/B

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Brake Fluid Solenoid Valve Relay > Component Information > Locations

Engine Room No.1 R/B / Engine Room No.2 R/B

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Locations

Instrument Panel

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Traction Control Module > Component Information > Technical Service Bulletins > Customer Interest for Traction Control Module: > EG003R-01 >

Nov > 02 > Engine Controls - Poor Throttle Response/Downshift Time

Traction Control Module: Customer InterestEngine Controls - Poor Throttle Response/Downshift Time

ENGINEEG003-01 REVISED
November 6, 2002

Title:THROTTLE RESPONSE AND DOWNSHIFT QUALITY IMPROVEMENTS

Models:'01 IS 300

:TSIB REVISION NOTICE

The ECM (PCM) calibration update applicable to this condition has been superceded as noted below. Refer to TSIB EG005-022 for additionaldetails on this new calibration update.

Introduction

To improve throttle response and 5-2 downshift time, the Engine Control Module (ECM) calibration has been revised and the TRAC ECU has beenchanged.

Applicable Vehicles^

2001 model year IS 300 vehicles.

Production Change Information

ECM Calibration Number Information

Parts Information

NOTE:

Authorized Modifications Labels may be ordered in packages of 25 from the Materials Distribution Center (MDC) through TDN Dealer SupportMaterials System, or by calling the MDC at 1-800-622-2033.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Traction Control Module > Component Information > Technical Service Bulletins > Customer

Interest for Traction Control Module: > EG003R-01 > Nov > 02 > Engine Controls - Poor Throttle Response/Downshift Time > Page 53

IS 300 L6-3.0L (2JZ-GE) (2001)

Warranty Information

Applicable warranty*This repair is covered under the Federal Emissions Warranty. This warranty Is in effect for 96 months or 80,000 miles, whichever occurs first, from thevehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.

Repair Procedure

Flash Reprogram ECM:
Flash reprogram the Engine ECM (using calibration ID number 35301300) to improve throttle response under the following conditions.
^ From a stop (starting out), sudden accelerator pedal application to approximately 25 to 40% opening.
^ From coasting at 15 to 25 MPH or at a steady cruise of 15 to 25 MPH, 50 to 70% accelerator pedal application (to cause a 5-2 downshift).

Follow procedures outlined in TSIB No. SS001-01, ECU Flash Reprogramming Process, and flash reprogram the engine ECM with calibration fileupdate 35301300.

After flash reprogramming the ECM, enter the required information on the Authorized Modifications Label and affix it to the vehicle at the locationshown.
Replace TRAC ECU:
Replace the TRAC ECU to improve throttle response under the following conditions.

^ From a stop (starting out), sudden accelerator pedal application at or near Wide Open Throttle (WOT).
^ From low speed, at or near WOT accelerator pedal application while turning.

Remove lower finish panel and related HVAC duct work (below steering column) and access the TRAC ECU. Remove and replace the TRAC ECU.

NOTE:

Check "Service History" for the affected vehicle to assure that the TRAC ECU has not already been replaced.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Traction Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins for Traction Control Module: >

EG003R-01 > Nov > 02 > Engine Controls - Poor Throttle Response/Downshift Time

Traction Control Module: All Technical Service BulletinsEngine Controls - Poor Throttle Response/Downshift Time

ENGINEEG003-01 REVISED
November 6, 2002

Title:THROTTLE RESPONSE AND DOWNSHIFT QUALITY IMPROVEMENTS

Models:'01 IS 300

:TSIB REVISION NOTICE

The ECM (PCM) calibration update applicable to this condition has been superceded as noted below. Refer to TSIB EG005-022 for additionaldetails on this new calibration update.

Introduction

To improve throttle response and 5-2 downshift time, the Engine Control Module (ECM) calibration has been revised and the TRAC ECU has beenchanged.

Applicable Vehicles^

2001 model year IS 300 vehicles.

Production Change Information

ECM Calibration Number Information

Parts Information

NOTE:

Authorized Modifications Labels may be ordered in packages of 25 from the Materials Distribution Center (MDC) through TDN Dealer SupportMaterials System, or by calling the MDC at 1-800-622-2033.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Traction Control Module > Component Information > Technical Service Bulletins > All

Technical Service Bulletins for Traction Control Module: > EG003R-01 > Nov > 02 > Engine Controls - Poor Throttle Response/Downshift Time > Page 59

IS 300 L6-3.0L (2JZ-GE) (2001)

Warranty Information

Applicable warranty*This repair is covered under the Federal Emissions Warranty. This warranty Is in effect for 96 months or 80,000 miles, whichever occurs first, from thevehicle's in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.

Repair Procedure

Flash Reprogram ECM:
Flash reprogram the Engine ECM (using calibration ID number 35301300) to improve throttle response under the following conditions.
^ From a stop (starting out), sudden accelerator pedal application to approximately 25 to 40% opening.
^ From coasting at 15 to 25 MPH or at a steady cruise of 15 to 25 MPH, 50 to 70% accelerator pedal application (to cause a 5-2 downshift).

Follow procedures outlined in TSIB No. SS001-01, ECU Flash Reprogramming Process, and flash reprogram the engine ECM with calibration fileupdate 35301300.

After flash reprogramming the ECM, enter the required information on the Authorized Modifications Label and affix it to the vehicle at the locationshown.
Replace TRAC ECU:
Replace the TRAC ECU to improve throttle response under the following conditions.

^ From a stop (starting out), sudden accelerator pedal application at or near Wide Open Throttle (WOT).
^ From low speed, at or near WOT accelerator pedal application while turning.

Remove lower finish panel and related HVAC duct work (below steering column) and access the TRAC ECU. Remove and replace the TRAC ECU.

NOTE:

Check "Service History" for the affected vehicle to assure that the TRAC ECU has not already been replaced.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Traction Control Module > Component Information > Technical Service Bulletins > Page 60

Instrument Panel

> Relays and Modules > Relays and Modules - Cooling System > Radiator Cooling Fan Motor Relay > Component Information > Locations

Engine Room No.3 R/B

> Relays and Modules > Relays and Modules - Cooling System > Radiator Cooling Fan Motor Relay > Component Information > Locations > Page 65

Radiator Cooling Fan Motor Relay: Testing and Inspection

INSPECTION

1. INSPECT NO.1 COOLING FAN RELAY
a. Remove the relay box cover.

b. Remove the No.1 cooling fan relay. (Marking: FAN NO.1)

c. Inspect the No.1 cooling fan relay continuity.

1. Using an ohmmeter, check that there is continuity between terminals 1 and 2.
If there is no continuity, replace the relay.

2. Check that there is no continuity between terminals 3 and 5.
If there is continuity, replace the relay.

d. Inspect the No.1 cooling fan relay operation.

1. Apply battery positive voltage to terminals 1 and 2.2. Using an ohmmeter, check that there is continuity between terminals 3 and 5.
If there is continuity, replace the relay.

e. Reinstall the No.1 cooling fan relay.f.

Reinstall the relay box cover.

2. INSPECT NO.2 COOLING FAN RELAY
a. Remove the relay box cover.

> Relays and Modules > Relays and Modules - Cooling System > Radiator Cooling Fan Motor Relay > Component Information > Locations > Page 66

IS 300 L6-3.0L (2JZ-GE) (2001)

b. Remove the No.2 cooling fan relay. (Marking: FAN NO.2)

c. Inspect the No.2 cooling fan relay continuity.

1. Using an ohmmeter, check that there is continuity between terminals 1 and 2.
If there is no continuity, replace the relay.

2. Check that there is continuity between terminals 3 and 4.
If there is no continuity, replace the relay.

3. Check that there is no continuity between terminals 3 and 5.
If there is continuity, replace the relay.

d. Inspect the No.2 cooling fan relay operation.

1. Apply battery positive voltage to terminals 1 and 2.2. Using an ohmmeter, check that there is no continuity between terminals 3 and 4.
If there is continuity, replace the relay.

3. Using an ohmmeter, check that there is continuity between terminals 3 and 5.
If there is no continuity, replace the relay.

e. Reinstall the No.2 cooling fan relay.f.

Reinstall the relay box cover.

3. INSPECT NO.3 COOLING FAN RELAY
a. Remove the relay box cover.

> Relays and Modules > Relays and Modules - Cooling System > Radiator Cooling Fan Motor Relay > Component Information > Locations > Page 67

IS 300 L6-3.0L (2JZ-GE) (2001)

b. Remove the No.3 cooling fan relay. (Marking: FAN NO.3)

c. Inspect the No.3 cooling fan relay continuity.

1. Using an ohmmeter, check that there is continuity between terminals 1 and 2.
If there is no continuity, replace the relay.

2. Check that there is no continuity between terminals 3 and 5.
If there is continuity, replace the relay.

d. Inspect the No.3 cooling fan relay operation.

1. Apply battery positive voltage to terminals 1 and 2.2. Using an ohmmeter, check that there is continuity between terminals 3 and 5.
If there is no continuity, replace the relay.

e. Reinstall the No.3 cooling fan relay.f.

Reinstall the relay box cover.

> Relays and Modules > Relays and Modules - Cruise Control > Cruise Control Module > Component Information > Locations

Cruise Control System

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Locations

Passenger Side J/B (Part 2)

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Testing and Inspection > Component Inspection

Blower Motor Relay: Testing and InspectionComponent Inspection
INSPECTION

1. REMOVE GLOVE COMPARTMENT DOOR

2. REMOVE BLOWER MOTOR CONTROL RELAY
a. Disconnect the connectors.b. Remove the screw and blower motor control relay.

3. INSPECT BLOWER MOTOR CONTROL CIRCUIT
Inspect the wire harness side connector from the back side, as shown in the chart.

Test conditions:-

Turn ignition switch to ON

- Operate blower motor (High blower speed)
If resistance is not as specified, replace the blower motor control relay.

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Testing and Inspection > Component Inspection > Page 78

IS 300 L6-3.0L (2JZ-GE) (2001)

4. INSTALL BLOWER MOTOR CONTROL RELAY

a. Install the blower motor control relay with the screw.b. Connect the connectors.

5. INSTALL GLOVE COMPARTMENT DOOR

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Testing and Inspection > Component Inspection > Page 79

Blower Motor Relay: Testing and InspectionRelated Diagnostic Procedures
INSPECTION

1. REMOVE FRONT DOOR SCUFF PLATE LH 2. REMOVE COWL SIDE TRIM BOARD LH

3. REMOVE HEATER MAIN RELAY

a. Disconnect the connectors.b. Remove the 2 passenger side junction block set nuts.

c. Remove the heater main relay from passenger side junction block.

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Testing and Inspection > Component Inspection > Page 80

IS 300 L6-3.0L (2JZ-GE) (2001)

4. INSPECT HEATER MAIN RELAY CONTINUITY
If continuity is not as specified, replace the relay.

5. INSTALL HEATER MAIN RELAY

a. Install the heater main relay to passenger side junction block.b. Install the passenger side junction block set nuts.c. Connect the connectors.

6. INSTALL COWL SIDE TRIM BOARD LH 7. INSTALL FRONT DOOR SCUFF PLATE LH

> Relays and Modules > Relays and Modules - HVAC > Compressor Clutch Relay > Component Information > Locations

Engine Room No.3 R/B

> Relays and Modules > Relays and Modules - HVAC > Compressor Clutch Relay > Component Information > Locations > Page 84

Compressor Clutch Relay: Testing and Inspection
MAGNETIC CLUTCH RELAY

INSPECTION

1. REMOVE MAGNETIC CLUTCH RELAY FROM RELAY BLOCK NO.3

2. INSPECT MAGNETIC CLUTCH RELAY (Marking: A.C COMP) CONTINUITY
If continuity is not as specified, replace the relay.

> Relays and Modules > Relays and Modules - Lighting and Horns > Daytime Running Lamp Relay > Component Information > Locations

Daytime Running Lamp Relay: Locations

Engine Compartment

Instrument Panel

> Relays and Modules > Relays and Modules - Lighting and Horns > Daytime Running Lamp Relay > Component Information > Locations > Page 89

Daytime Running Lamp Relay: Testing and Inspection

INSPECT DAYTIME RUNNING LIGHT MAIN RELAY CIRCUITDisconnect the connector from the relay and inspect the connector on the wire harness side.If circuit is specified, try replacing the relay with a new one. If circuit is not as specified, inspect the circuits connected to other parts.

> Relays and Modules > Relays and Modules - Lighting and Horns > Fog/Driving Lamp Relay > Component Information > Locations

Passenger Side J/B (Part 2)

> Relays and Modules > Relays and Modules - Lighting and Horns > Fog/Driving Lamp Relay > Component Information > Locations > Page 93

Fog/Driving Lamp Relay: Testing and Inspection

INSPECT FOG LIGHT RELAY CONTINUITYIf continuity is not as specified, replace the relay.

> Relays and Modules > Relays and Modules - Lighting and Horns > Hazard Flasher Relay > Component Information > Locations

Driver Side J/B (Part 2)

> Relays and Modules > Relays and Modules - Lighting and Horns > Headlamp Alignment Control Module > Component Information > Locations > Component Locations

Headlamp Alignment Control Module: Component Locations

Engine Compartment

Instrument Panel

> Relays and Modules > Relays and Modules - Lighting and Horns > Headlamp Alignment Control Module > Component Information > Locations > Component Locations > Page 101

Headlamp Alignment Control Module: Connector Locations

Body

Ground Location

BI Roof Panel
BJ Front Floor Panel LH
BK Front Floor Panel Center LH
BL Left Quarter Panel LH

Connector Location

BA1 Rear Door No.2 and Floor No.2 Wire (Left Center Pillar)
BB1 Rear Door No.1 and Floor Wire (Right Center Pillar)
BC1 Floor No.2 Wire and Floor Wire (Right Floor Partition Panel RH)
BD1 Sensor Wire and Floor No.2 Wire (Lower Back Panel LH)
BE1 Floor No.2 Wire and Luggage Room Wire (Near the License Plate Light LH)
BF1 Floor No.2 Wire and Luggage Room Wire (Near the License Plate Light RH)

> Relays and Modules > Relays and Modules - Lighting and Horns > Headlamp Alignment Control Module > Component Information > Locations > Component Locations >

Page 102

IS 300 L6-3.0L (2JZ-GE) (2001)

Body

Connector Location

BG1 Floor No.2 Wire and Front Seat LH Wire (Under the Driver's Seat)
BH1 Floor Wire and Front Seat RH Wire (Under the Front Passenger's Seat)

> Relays and Modules > Relays and Modules - Lighting and Horns > Headlamp Alignment Control Module > Component Information > Locations > Component Locations >

Page 103

IS 300 L6-3.0L (2JZ-GE) (2001)

Engine Compartment

Ground Location

EA Front Side of the Intake Manifold
EB Center Side of the Intake Manifold
EC

Connector Location

EA1 Engine Wire and Engine Room Main Wire (Inside of the ECU Box)
EA2 Engine Wire and Engine Room Main Wire (Inside of the ECU Box)

Instrument Panel / Center Console

Connector Location

IA1 Instrument Panel Wire and Engine Room Main (Near the Driver Side J/B)
IA2 Instrument Panel Wire and Engine Room Main (Near the Driver Side J/B)
IB1 Instrument Panel Wire and Floor No.2 Wire (Near the Driver Side J/B)
IB2 Instrument Panel Wire and Floor No.2 Wire (Near the Driver Side J/B)
IC1 Engine Room Main Wire and Floor No.2 Wire (Near the Driver Side J/B)
ID1 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IE1 Instrument Panel No.2 Wire and Instrument Panel Wire (Left Side of the Instrument Panel)

> Relays and Modules > Relays and Modules - Lighting and Horns > Headlamp Alignment Control Module > Component Information > Locations > Component Locations >

Page 104

IS 300 L6-3.0L (2JZ-GE) (2001)

Instrument Panel / Center Console

Connector Location

IF1 Instrument Panel Wire and A/C Sub Wire (Left Side of the Blower Unit)
IF2 Instrument Panel Wire and A/C Sub Wire (Left Side of the Blower Unit)
IG1 Instrument Panel Wire and Engine Room Main (Near the Passenger Side J/B)
IG2 Instrument Panel Wire and Engine Room Main
IH1 Instrument Panel Wire and Floor Wire (Near the Passenger Side J/B)
IH2 Instrument Panel Wire and Floor Wire (Near the Passenger Side J/B)
II1 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)