Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 283

LIGHTING  –  LIGHTING SYSTEM

LI–29

LI

(a) Remove the HEAD relay from the engine room R/B No. 

2.

(b) Disconnect the 1B main body ECU connector.
(c) Measure the resistance.

Standard resistance

(d) Reinstall the HEAD relay.
(e) Reconnect the main body ECU connector.

NG

OK

4

CHECK HARNESS AND CONNECTOR (HEADLIGHT RELAY - MAIN BODY ECU)

1

2

3

4

5

6

7

8

9 10 11 12 13

Engine Room R/B No. 2:

Wire Harness Side:

Front View

HRLY

1B

Main Body ECU Connector

B136079E01

Tester connection

Specified Condition

HEAD relay terminal 2 - 1B-8 (HRLY)

Below 1 

Ω

HEAD relay terminal 2 or 1B-8 (HRLY) 

- Body ground

10 k

Ω or higher

REPAIR OR REPLACE HARNESS OR 
CONNECTOR

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

LI–30

LIGHTING  –  LIGHTING SYSTEM

LI

SYSTEM DESCRIPTION

The main body ECU controls the DRL relay.

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

OK:

Headlight assembly (low) illuminates. 

OK

NG

(a) Remove the DRL fuse from the engine room R/B No. 2.

DRL Relay Circuit

1

PERFORM ACTIVE TEST BY INTELLIGENT TESTER (DRL RLY)

HRLY

DRL

DRL

HEAD

To Headlight LH

To Headlight RH

To Battery

H-ON

Main Body ECU

B136081E01

Item

Test Details

Diagnostic Note

DRL RLY

DRL relay ON / OFF

-

PROCEED TO NEXT CIRCUIT INSPECTION 
SHOWN IN PROBLEM SYMPTOMS TABLE

2

INSPECT FUSE (DRL FUSE)

LIGHTING  –  LIGHTING SYSTEM

LI–31

LI

(b) Measure the resistance.
Standard resistance:

Below 1 

Ω

(c) Reinstall the DRL fuse.

NG

OK

(a) Remove the DRL relay from the engine room R/B No. 4.
(b) Measure the resistance.
Standard resistance

(c) Reinstall the DRL relay.

NG

OK

(a) Remove the DRL relay from the engine room R/B No. 4.
(b) Measure the voltage.
Standard voltage

(c) Reinstall the DRL relay.

NG

OK

REPLACE FUSE

3

INSPECT DAYTIME RUNNING LIGHT RELAY

Battery

Ohmmeter

E109076E03

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 DAYTIME RUNNING LIGHT RELAY

4

CHECK HARNESS AND CONNECTOR (BATTERY - DAYTIME RUNNING LIGHT RELAY)

Engine Room R/B No. 4:

B136082E01

Tester connection

Condition

Specified Condition

DRL relay terminal 1 - 

Body round

Light control switch is 

in HEAD position

11 to 14 V

DRL relay terminal 1 - 

Body round

Light control switch is 

in OFF or TAIL position

Below 1 V

REPAIR OR REPLACE HARNESS OR 
CONNECTOR

LI–32

LIGHTING  –  LIGHTING SYSTEM

LI

(a) Remove the DRL relay from the engine room R/B No. 4.
(b) Disconnect the 1B main body ECU connector.
(c) Measure the resistance.
Standard resistance

(d) Reinstall the DRL relay.
(e) Reconnect the main body ECU connector.

NG

OK

(a) Remove the DRL relay from the engine room R/B No. 4.
(b) Disconnect the A23 and A24 headlight connectors.
(c) Measure the resistance.
Standard resistance

(d) Reinstall the DRL relay.
(e) Reconnect the headlight connectors.

NG

5

CHECK HARNESS AND CONNECTOR (DAYTIME RUNNING LIGHT RELAY - MAIN BODY 
ECU)

1

2

3

4

5

6

7

8

9 10 11 12 13

Front View

Wire Harness Side:

1B

Engine Room R/B No. 4:

Main Body ECU Connector

B136083E01

Tester Connection

Specified Condition

DRL relay terminal 2 - 1B-3 (H-ON)

Below 1 

Ω

DRL relay terminal 2 or 1B-3 (H-ON) - 

Body ground

10 k

Ω or higher

REPAIR OR REPLACE HARNESS OR 
CONNECTOR

6

CHECK HARNESS AND CONNECTOR (DAYTIME RUNNING LIGHT RELAY - HEADLIGHT, 
BODY GROUND)

Engine Room R/B No. 4:

Headlight Connector

Front View

*1: LH
*2: RH

Wire Harness Side:

A23

A24

*

1

*

2

B136084E01

Tester Connection

Specified Condition

DRL relay terminal 3 - A23-3

Below 1 

Ω

DRL relay terminal 3 or A23-3 - Body 

ground

10 k

Ω or higher

DRL relay terminal 3 - A24-3

Below 1 

Ω

DRL relay terminal 3 or A24-3 - Body 

ground

10 k

Ω or higher

DRL relay terminal 5 - Body ground

Below 1 

Ω

REPAIR OR REPLACE HARNESS OR 
CONNECTOR