Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 291

LIGHTING  –  LIGHTING SYSTEM

LI–61

LI

(d) Select the item(s) in the ACTIVE TEST, and check the 

operation. 

BODY

OK:

The room light and rear room light come on. (Light 
switch is in DOOR position.)

OK

NG

(a) Inspect the room light assembly. (see page 

LI-96

).

OK:

Room light assembly is normal.

NG

OK

(a) Inspect the rear room light assembly. (see page

LI-100

 ).

OK:

Rear room light assembly is normal.

NG

OK

(a) Disconnect the 1A main body ECU connector.
(b) Measure the resistance.
Standard resistance

(c) Reconnect the main body ECU connector.

NG

Item

Test Details

Diagnostic Note

ILLUMI OUTPUT

Illuminated Entry System ON/OFF

-

PROCEED TO NEXT CIRCUIT INSPECTION 
SHOWN IN PROBLEM SYMPTOMS TABLE

2

INSPECT ROOM LIGHT ASSEMBLY

REPLACE ROOM LIGHT ASSEMBLY

3

INSPECT REAR ROOM LIGHT ASSEMBLY

REPLACE REAR ROOM LIGHT ASSEMBLY

4

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - ROOM LIGHT, BODY GROUND)

1

11

2

12

3

13

4

14

5

15

6

16

7

17

8

18

9

19

10

20

Wire Harness Side:

Front View

ILE

GND2

1A

Main Body ECU Connector

B136093E02

Tester Connection

Condition

Specified Condition

1A-8 (ILE) - 1A-7(GND2)

Room light switch is in 
DOOR position
Rear room light switch 
is in OFF position

Below 1 

Ω

1A-8 (ILE) - 1A-7(GND2)

Room light switch is in 
OFF position
Rear room light switch 
is in DOOR position

Below 1 

Ω

1A-8 (ILE) or 1A-7 

(GND2)- Body ground

Always

10 k

Ω or higher

REPAIR OR REPLACE HARNESS OR 
CONNECTOR

LI–62

LIGHTING  –  LIGHTING SYSTEM

LI

OK

REPLACE MAIN BODY ECU

LIGHTING  –  LIGHTING SYSTEM

LI–63

LI

DESCRIPTION

The headlight dimmer switch sends a signal to the main body ECU.

WIRING DIAGRAM

INSPECTION PROCEDURE

(a) Connect the intelligent tester with CAN VIM to the DLC3.
(b) Turn the ignition switch ON.
(c) Turn the intelligent tester main switch on.
(d) Select the item below in the ACTIVE TEST and then 

check the relay operation.

BODY

Taillight Relay Circuit

1

PERFORM ACTIVE TEST BY INTELLIGENT TESTER (ILLUMI OUTPUT)

TAIL

To Battery

TAIL

TRLY

Front Turn 
Signal 
Light LH

Front Turn 
Signal 
Light RH

Outer Rear 
View Mirror 
Illumination  
Light LH

Outer Rear 
View Mirror 
Illumination  
Light RH

Taillight 
LH

Taillight 
RH

License 
Plate 
Light

Main Body ECU

B138192E01

Item

Test Details/ Display (Range)

Diagnostic Note

ILLUMI OUTPUT

Illuminated Entry System ON/OFF

-

LI–64

LIGHTING  –  LIGHTING SYSTEM

LI

Result

B

C

D

E

A

(a) Remove the TAIL fuse from the main body ECU.
(b) Measure the resistance.
Standard resistance:

Below 1 

Ω

(c) Reinstall the TAIL fuse.

NG

OK

(a) Remove the TAIL relay from the main body ECU.
(b) Measure the resistance.
Standard resistance

(c) Reinstall the TAIL relay.

NG

Result

Proceed to

OK

A

No illumination lights illuminate

B

Front turn signal light does not illuminate

C

Taillight or license plate light does not illuminate

D

Outer rear view mirror illumination light does not illuminate

E

              Go to step 2

              Go to step 5

              Go to step 7

              Go to step 10

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2

INSPECT FUSE (TAIL FUSE)

REPLACE FUSE

3

INSPECT TAIL RELAY

Battery

Ohmmeter

E109078E06

Tester Connection

Specified Condition

3 - 5

10 k

Ω or higher

3 - 5

Below 1 

Ω (When battery voltage is 

applied between terminals 1 and 2)

REPLACE TAIL RELAY