Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 284

LIGHTING  –  LIGHTING SYSTEM

LI–33

LI

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

LI–34

LIGHTING  –  LIGHTING SYSTEM

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DESCRIPTION

The turn signal flasher relay turns on when it receives signals from the headlight dimmer switch integrated 
with the turn signal switch, causing the turn signal lights to flash.

WIRING DIAGRAM

INSPECTION PROCEDURE

(a) When the turn signal light switch is operated, check that 

the appropriate turn signal light flashes.

Turn Signal Light Circuit

1

CHECK OPERATION (TURN SIGNAL LIGHT)

Headlight Dimmer Switch

Turn 
Signal 
Switch

RH

LH

E

TL

TR

E

TL

TR

Turn Signal Flasher Relay

E

ER

EL

B

IG

IG1

TRN-HAZ

LR

LL

Front Turn 
Signal light 
Bulb RH

Rear Turn 
Signal Light 
Bulb RH

Front Turn 
Signal light 
Bulb LH

Rear Turn 
Signal Light 
Bulb LH

Battery

To Ignition 
Switch

B136085E01

LIGHTING  –  LIGHTING SYSTEM

LI–35

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Result

B

C

A

(a) Remove the IG1 fuse from the main body ECU.
(b) Remove the TRN-HAZ fuse from the engine room R/B 

No.2.

(c) Measure the resistance.

Standard resistance:

Below 1 

Ω

(d) Reinstall the IG1 and TRN-HAZ fuses.

NG

OK

(a) Measure the voltage.

Standard voltage

NG

OK

Condition

Proceed to

No lights flash

A

Front turn signal light (LH or RH) does not flash

B

Rear turn signal light (LH or RH) does not flash

C

              Go to step 8

              Go to step 10

2

INSPECT FUSE (IG1, TRN-HAZ)

REPLACE FUSE

3

INSPECT TURN SIGNAL FLASHER RELAY

Connector Back Side:

LR

LL

Turn Signal Flasher Relay Connector

EL

ER

E101506E03

Tester Connection

Condition

Specified Condition

2 (LR) - Body ground

Turn signal switch 

(right turn) OFF 

→ ON

0 V 

→ 11 to 14 V (60 to 

120 times per minute)

3 (LL) - Body ground

Turn signal switch (left 

turn) OFF 

→ ON

0 V 

→ 11 to 14 V (60 to 

120 times per minute)

5 (EL) - Body ground

Turn signal switch (left 

turn) OFF 

→ ON

11 to 14 V 

→ 0 V

6 (ER) - Body ground

Turn signal switch 

(right turn) OFF 

→ ON

11 to 14 V 

→ 0 V

REPLACE TURN SIGNAL FLASHER RELAY

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LIGHTING  –  LIGHTING SYSTEM

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(a) Disconnect the E9 turn signal flasher relay connector.
(b) Measure the voltage.

Standard voltage

(c) Reconnect the turn signal flasher relay connector.

NG

OK

(a) Remove the headlight dimmer switch.
(b) Inspect the turn signal light switch.
(c) Measure the resistance.

Standard resistance

(d) Reinstall the headlight dimmer switch.

NG

OK

4

CHECK HARNESS AND CONNECTOR (FUSE - TURN SIGNAL FLASHER RELAY)

Turn Signal Flasher Relay Connector

Wire Harness Side:

IG

B

Front View

E9

E120966E07

Tester Connection 

Condition

Specified Condition

E9-1(IG) - Body ground

Ignition switch ON

11 to 14 V

E9-4 (B) - Body ground

Always

11 to 14 V

REPAIR OR REPLACE HARNESS OR 
CONNECTOR

5

INSPECT HEADLIGHT DIMMER SWITCH

Component Side:

TL

TR

TB

Headlight Dimmer Switch

B136086E01

Tester Connection

Condition

Specified Condition

2 (TB) - 3 (TR)

Right

Below 1 

Ω

2 (TB) - 3 (TR)

Neutral

10 k

Ω or higher

2 (TB) - 1 (TL)

Left

Below 1 

Ω

2 (TB) - 1 (TL)

Neutral

10 k

Ω or higher

REPLACE HEADLIGHT DIMMER SWITCH