Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Short in Turn Signal / Hazard Flasher Circuit (B1508)

DESCRIPTION

This DTC is stored when the combination meter assembly detects a short in a turn signal light circuit.

HINT:

If there is a short in a turn signal light circuit, all of the turn signal lights in that circuit will not blink.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Memory	Note
B1508	Short in Turn Signal / Hazard Flasher Circuit	Diagnosis Condition: Battery voltage is 7 V or more Malfunction Status: Short in turn signal light circuit	Outer rear view mirror assembly Outer mirror retractor*1 Side turn signal light assembly Radio receiver assembly Towing converter relay Harness or connector Combination meter assembly for TMK Made No. 1 headlight ECU sub-assembly*2 Headlight unit Front turn signal light socket*3 Front turn signal light bulb*3 Rear light cord*3 Rear turn signal light bulb*3 Rear light assembly*4 Rear light socket and wire*4 for TMMC Made Headlight assembly Front turn signal light socket*3 Front turn signal light bulb*3 Rear combination light assembly Rear light cord*3 Rear turn signal light bulb*3 Rear light assembly*4 Rear light socket and wire*4	DTC stored	-

WIRING DIAGRAM

CAUTION / NOTICE / HINT

PROCEDURE

1.	CHECK SYMPTOMS

(a) Check the problem symptoms.

Result	Proceed to
All LH side turn signal lights do not blink	A
All RH side turn signal lights do not blink	B

B

GO TO STEP 21

A

2.	CONFIRM MODEL

(a) Choose the model to be inspected.

Result	Proceed to
w/o Automatic Headlight Beam Level Control System	A
w/ Automatic Headlight Beam Level Control System (for TMK Made)	B
w/ Automatic Headlight Beam Level Control System (for TMMC Made)	C

B

GO TO STEP 4

C

GO TO STEP 7

A

3.	CHECK LH SIDE TURN SIGNAL LIGHTS (FRONT TURN SIGNAL LIGHT CIRCUIT)

(a) Disconnect the A21 headlight assembly LH connector.

(b) Operate the turn signal switch and check that the LH side turn signal lights other than the front turn signal light blink.

HINT:

If the LH side turn signal lights other than the front turn signal light blink, the front turn signal light socket LH is malfunctioning.

Result	Proceed to
LH side turn signal lights other than the front turn signal light blink	A
Problem symptoms do not change (All LH side turn signal lights do not blink)	B

A

REPLACE FRONT TURN SIGNAL LIGHT SOCKET LH

B

GO TO STEP 9

4.	CHECK LH SIDE TURN SIGNAL LIGHTS (FRONT TURN SIGNAL LIGHT CIRCUIT)

(a) Disconnect the A49 headlight assembly LH connector.

(b) Operate the turn signal switch and check that the LH side turn signal lights other than the front turn signal light blink.

HINT:

If the LH side turn signal lights other than the front turn signal light blink, a component of the headlight assembly LH is malfunctioning.

Result	Proceed to
LH side turn signal lights other than the front turn signal light blink	A
Problem symptoms do not change (All LH side turn signal lights do not blink)	B

B

GO TO STEP 9

A

5.	CHECK LH SIDE TURN SIGNAL LIGHTS (NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH)

(a) Remove the No. 1 headlight ECU sub-assembly LH the from headlight assembly LH.

Click here

(b) Connect the A49 headlight assembly LH connector.

(c) Operate the turn signal switch and check that the LH side turn signal lights other than the front turn signal light blink.

HINT:

If all LH side turn signal lights do not blink, the No. 1 headlight ECU sub-assembly LH is malfunctioning.

Result	Proceed to
LH side turn signal lights other than the front turn signal light blink (for Bulb Type Front Turn Signal Light)	A
LH side turn signal lights other than the front turn signal light blink (for LED Type Front Turn Signal Light)	B
All LH side turn signal lights do not blink	C

B

REPLACE HEADLIGHT UNIT LH

C

REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH

A

6.	CHECK LH SIDE TURN SIGNAL LIGHTS (HEADLIGHT UNIT LH)

(a) Remove the front turn signal light socket LH from headlight assembly LH.

Click here

(b) Connect the headlight unit LH connector to the No. 1 headlight ECU sub-assembly LH connector.

(c) Operate the turn signal switch and check that the LH side turn signal lights other than the front turn signal light blink.

HINT:

If all LH side turn signal lights do not blink, the headlight unit LH is malfunctioning.

Result	Proceed to
LH side turn signal lights other than the front turn signal light blink	A
All LH side turn signal lights do not blink	B

A

REPLACE FRONT TURN SIGNAL LIGHT SOCKET LH

B

REPLACE HEADLIGHT UNIT LH

7.	CHECK LH SIDE TURN SIGNAL LIGHTS (FRONT TURN SIGNAL LIGHT CIRCUIT)

(a) Disconnect the A49 headlight assembly LH connector.

(b) Operate the turn signal switch and check that the LH side turn signal lights other than the front turn signal light blink.

HINT:

If the LH side turn signal lights other than the front turn signal light blink, a component of the headlight assembly LH is malfunctioning.

Result	Proceed to
LH side turn signal lights other than the front turn signal light blink (for Bulb Type Front Turn Signal Light)	A
LH side turn signal lights other than the front turn signal light blink (for LED Type Front Turn Signal Light)	B
Problem symptoms do not change (All LH side turn signal lights do not blink)	C

B

REPLACE HEADLIGHT ASSEMBLY LH

C

GO TO STEP 9

A

8.	CHECK LH SIDE TURN SIGNAL LIGHTS (HEADLIGHT ASSEMBLY LH)

(a) Remove the front turn signal light socket LH from the headlight assembly LH.

Click here

(b) Connect the A49 headlight assembly LH connector.

(c) Operate the turn signal switch and check that the LH side turn signal lights other than the front turn signal light blink.

HINT:

If all LH side turn signal lights do not blink, the headlight assembly LH is malfunctioning.

Result	Proceed to
LH side turn signal lights other than the front turn signal light blink	A
All LH side turn signal lights do not blink	B

A

REPLACE FRONT TURN SIGNAL LIGHT SOCKET LH

B

REPLACE HEADLIGHT ASSEMBLY LH

9.	CHECK LH SIDE TURN SIGNAL LIGHTS (SIDE TURN SIGNAL LIGHT CIRCUIT)

(a) Connect the headlight assembly LH connector.

(b) Disconnect the N4 outer mirror control ECU assembly LH connector.

(c) Operate the turn signal switch and check that the LH side turn signal lights other than the side turn signal light blink.

HINT:

If the LH side turn signal lights other than the side turn signal light blink, there is a malfunction in the circuit after the N4 connector.

Result	Proceed to
LH side turn signal lights other than the side turn signal light blink	A
Problem symptoms do not change (All LH side turn signal lights do not blink)	B

B

GO TO STEP 13

A

10.	CHECK LH SIDE TURN SIGNAL LIGHTS (OUTER MIRROR CONTROL ECU ASSEMBLY LH)

(a) Disconnect the z25 outer mirror control ECU assembly LH connector.

(b) Connect the N4 outer mirror control ECU assembly LH connector.

(c) Operate the turn signal switch and check that the LH side turn signal lights other than the side turn signal light blink.

HINT:

If all LH side turn signal lights do not blink, the outer mirror control ECU assembly LH is malfunctioning.

Result	Proceed to
LH side turn signal lights other than the side turn signal light blink (w/o Power Retract Mirror)	A
LH side turn signal lights other than the side turn signal light blink (w/ Power Retract Mirror)	B
All LH side turn signal lights do not blink	C

B

GO TO STEP 12

C

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH

A

11.	CHECK LH SIDE TURN SIGNAL LIGHTS (OUTER REAR VIEW MIRROR ASSEMBLY LH)

(a) Remove the side turn signal light assembly LH from the outer rear view mirror assembly LH.

Click here

(b) Connect the outer rear view mirror assembly LH connector to the outer mirror control ECU assembly LH connector.

(c) Operate the turn signal switch and check that the LH side turn signal lights other than the side turn signal light blink.

HINT:

If all LH side turn signal lights do not blink, the outer rear view mirror assembly LH is malfunctioning.

Result	Proceed to
LH side turn signal lights other than the side turn signal light blink	A
All LH side turn signal lights do not blink	B

A

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH

B

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH

12.	CHECK LH SIDE TURN SIGNAL LIGHTS (OUTER MIRROR RETRACTOR LH)

(a) Remove the side turn signal light assembly LH from outer rear view mirror assembly LH.

Click here

(b) Connect the outer rear view mirror assembly LH connector to the outer mirror control ECU assembly LH connector.

(c) Operate the turn signal switch and check that the LH side turn signal lights other than the side turn signal light blink.

HINT:

If all LH side turn signal lights do not blink, the outer mirror retractor LH is malfunctioning.

Result	Proceed to
LH side turn signal lights other than the side turn signal light blink	A
All LH side turn signal lights do not blink	B

A

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY LH

B

REPLACE OUTER MIRROR RETRACTOR LH

13.	CHECK LH SIDE TURN SIGNAL LIGHTS (SWITCH CIRCUIT (RADIO RECEIVER ASSEMBLY))

(a) Connect the outer mirror control ECU assembly LH connector.

(b) Disconnect the J151 radio receiver assembly connector.

(c) Operate the turn signal switch and check that the LH side turn signal lights blink.

HINT:

If all LH side turn signal lights blink, the radio receiver assembly is malfunctioning.

Result	Proceed to
All LH side turn signal lights blink	A
Problem symptoms do not change (All LH side turn signal lights do not blink)	B

A

REPLACE RADIO RECEIVER ASSEMBLY

B

14.	CHECK LH SIDE TURN SIGNAL LIGHTS (TOWING CONVERTER CIRCUIT)

(a) Connect the radio receiver assembly connector.

(b) Disconnect the S27 towing converter relay connector.

(c) Operate the turn signal switch and check that the LH side turn signal lights blink.

HINT:

If all LH side turn signal lights blink, there is a malfunction in the circuit after the S27 connector.

Result	Proceed to
All LH side turn signal lights blink	A
Problem symptoms do not change (All LH side turn signal lights do not blink)	B

A

GO TO TOWING CONVERTER SYSTEM

B

15.	CONFIRM MODEL

(a) Choose the model to be inspected.

Result	Proceed to
for Bulb Type Rear Turn Signal Light	A
for LED Type Rear Turn Signal Light	B

B

GO TO STEP 17

A

16.	CHECK LH SIDE TURN SIGNAL LIGHTS (REAR TURN SIGNAL LIGHT CIRCUIT)

(a) Connect the towing converter relay connector.

(b) Disconnect the S31 rear combination light assembly LH connector.

(c) Operate the turn signal switch and check that the LH side turn signal lights other than the rear turn signal light blink.

HINT:

If the LH side turn signal lights other than the rear turn signal light blink, the rear light cord LH is malfunctioning.

Result	Proceed to
LH side turn signal lights other than the rear turn signal light blink	A
Problem symptoms do not change (All LH side turn signal lights do not blink)	B

A

REPLACE REAR LIGHT CORD LH

B

GO TO STEP 20

17.	CHECK LH SIDE TURN SIGNAL LIGHTS (REAR TURN SIGNAL LIGHT CIRCUIT)

(a) Connect the towing converter relay connector.

(b) Disconnect the S31 rear combination light assembly LH connector.

(c) Disconnect the Z21 rear light assembly LH connector.

(d) Operate the turn signal switch and check that the LH side turn signal lights other than the rear turn signal light blink.

HINT:

If the LH side turn signal lights other than the rear turn signal light blink, the rear combination light assembly LH or rear light socket and wire LH is malfunctioning.

Result	Proceed to
LH side turn signal lights other than the rear turn signal light blink	A
Problem symptoms do not change (All LH side turn signal lights do not blink)	B

B

GO TO STEP 20

A

18.	CHECK LH SIDE TURN SIGNAL LIGHTS (REAR COMBINATION LIGHT ASSEMBLY LH)

(a) Connect the rear combination light assembly LH connector.

(b) Operate the turn signal switch and check that the LH side turn signal lights other than the rear turn signal light blink.

HINT:

If all LH side turn signal lights do not blink, the rear combination light assembly LH is malfunctioning.

Result	Proceed to
LH side turn signal lights other than the rear turn signal light blink	A
All LH side turn signal lights do not blink	B

B

REPLACE REAR COMBINATION LIGHT ASSEMBLY LH

A

19.	CHECK LH SIDE TURN SIGNAL LIGHTS (REAR LIGHT SOCKET AND WIRE LH)

(a) Remove the rear light socket and wire LH from rear light assembly LH.

Click here

(b) Connect the Z21 rear light assembly LH connector.

(c) Operate the turn signal switch and check that the LH side turn signal lights other than the rear turn signal light blink.

HINT:

If all LH side turn signal lights do not blink, the rear light socket and wire LH is malfunctioning.

Result	Proceed to
LH side turn signal lights other than the rear turn signal light blink	A
All LH side turn signal lights do not blink	B

A

REPLACE REAR LIGHT ASSEMBLY LH

B

REPLACE REAR LIGHT SOCKET AND WIRE LH

20.	CHECK HARNESS AND CONNECTOR (LH SIDE (ALL PARTS) - COMBINATION METER ASSEMBLY)

(a) Disconnect the A21*3 or A49*4 headlight assembly LH connector.

(b) Disconnect the N4 outer mirror control ECU assembly LH connector.

(c) Disconnect the J151 radio receiver assembly connector.

(d) Disconnect the S27 towing converter relay connector.

(e) Disconnect the J11 combination meter assembly connector.

(f) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
A21-1 (B)*3, A49-11 (TNS)*4, A49-11 (TNS), N4-11 (TRNI), J151-26 (HFL) or J11-13 (LL) - Body ground	Always	10 kΩ or higher
S27-4 (TRNL), S31-4 (TRN) or J11-11 (TRNL) - Body ground*1	Always	10 kΩ or higher
S27-4 (TRNL), S31-4 (TRN), Z21-6 (B) or J11-11 (TRNL) - Body ground*2	Always	10 kΩ or higher

OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

21.	CONFIRM MODEL

(a) Choose the model to be inspected.

Result	Proceed to
w/o Automatic Headlight Beam Level Control System	A
w/ Automatic Headlight Beam Level Control System (for TMK Made)	B
w/ Automatic Headlight Beam Level Control System (for TMMC Made)	C

B

GO TO STEP 23

C

GO TO STEP 26

A

22.	CHECK RH SIDE TURN SIGNAL LIGHTS (FRONT TURN SIGNAL LIGHT CIRCUIT)

(a) Disconnect the A25 headlight assembly RH connector.

(b) Operate the turn signal switch and check that the LH side turn signal lights other than the front turn signal light blink.

HINT:

If the LH side turn signal lights other than the front turn signal light blink, the front turn signal light RH is malfunctioning.

Result	Proceed to
RH side turn signal lights other than the front turn signal light blink	A
Problem symptoms do not change (All RH side turn signal lights do not blink)	B

A

REPLACE FRONT TURN SIGNAL LIGHT SOCKET RH

B

GO TO STEP 28

23.	CHECK RH SIDE TURN SIGNAL LIGHTS (FRONT TURN SIGNAL LIGHT CIRCUIT)

(a) Disconnect the A50 headlight assembly RH connector.

(b) Operate the turn signal switch and check that the RH side turn signal lights other than the front turn signal light blink.

HINT:

If the RH side turn signal lights other than the front turn signal light blink, a component of the headlight assembly RH is malfunctioning.

Result	Proceed to
RH side turn signal lights other than the front turn signal light blink	A
Problem symptoms do not change (All RH side turn signal lights do not blink)	B

B

GO TO STEP 28

A

24.	CHECK RH SIDE TURN SIGNAL LIGHTS (NO. 1 HEADLIGHT ECU SUB-ASSEMBLY RH)

(a) Remove the No. 1 headlight ECU sub-assembly RH the from headlight assembly RH.

Click here

(b) Connect the A50 headlight assembly RH connector.

(c) Operate the turn signal switch and check that the RH side turn signal lights other than the front turn signal light blink.

HINT:

If all RH side turn signal lights do not blink, the No. 1 headlight ECU sub-assembly RH is malfunctioning.

Result	Proceed to
RH side turn signal lights other than the front turn signal light blink (for Bulb Type Front Turn Signal Light)	A
RH side turn signal lights other than the front turn signal light blink (for LED Type Front Turn Signal Light)	B
All RH side turn signal lights do not blink	C

B

REPLACE HEADLIGHT UNIT RH

C

REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY RH

A

25.	CHECK RH SIDE TURN SIGNAL LIGHTS (HEADLIGHT UNIT RH)

(a) Remove the front turn signal light socket RH from headlight assembly RH.

Click here

(b) Connect the headlight unit RH connector to the No. 1 headlight ECU sub-assembly RH connector.

(c) Operate the turn signal switch and check that the RH side turn signal lights other than the front turn signal light blink.

HINT:

If all RH side turn signal lights do not blink, the headlight unit RH is malfunctioning.

Result	Proceed to
RH side turn signal lights other than the front turn signal light blink	A
All RH side turn signal lights do not blink	B

A

REPLACE FRONT TURN SIGNAL LIGHT SOCKET RH

B

REPLACE HEADLIGHT UNIT RH

26.	CHECK RH SIDE TURN SIGNAL LIGHTS (FRONT TURN SIGNAL LIGHT CIRCUIT)

(a) Disconnect the A50 headlight assembly RH connector.

(b) Operate the turn signal switch and check that the RH side turn signal lights other than the front turn signal light blink.

HINT:

If the RH side turn signal lights other than the front turn signal light blink, a component of the headlight assembly RH is malfunctioning.

Result	Proceed to
RH side turn signal lights other than the front turn signal light blink (for Bulb Type Front Turn Signal Light)	A
RH side turn signal lights other than the front turn signal light blink (for LED Type Front Turn Signal Light)	B
Problem symptoms do not change (All RH side turn signal lights do not blink)	C

B

REPLACE HEADLIGHT ASSEMBLY RH

C

GO TO STEP 28

A

27.	CHECK RH SIDE TURN SIGNAL LIGHTS (HEADLIGHT ASSEMBLY RH)

(a) Remove the front turn signal light socket RH from the headlight assembly RH.

Click here

(b) Connect the A50 headlight assembly RH connector.

(c) Operate the turn signal switch and check that the RH side turn signal lights other than the front turn signal light blink.

HINT:

If all RH side turn signal lights do not blink, the headlight assembly RH is malfunctioning.

Result	Proceed to
RH side turn signal lights other than the front turn signal light blink	A
All RH side turn signal lights do not blink	B

A

REPLACE FRONT TURN SIGNAL LIGHT SOCKET RH

B

REPLACE HEADLIGHT ASSEMBLY RH

28.	CHECK RH SIDE TURN SIGNAL LIGHTS (SIDE TURN SIGNAL LIGHT CIRCUIT)

(a) Connect the headlight assembly RH connector.

(b) Disconnect the M4 outer mirror control ECU assembly RH connector.

(c) Operate the turn signal switch and check that the RH side turn signal lights other than the side turn signal light blink.

HINT:

If the RH side turn signal lights other than the side turn signal light blink, there is a malfunction in the circuit after the M4 connector.

Result	Proceed to
RH side turn signal lights other than the side turn signal light blink	A
Problem symptoms do not change (All RH side turn signal lights do not blink)	B

B

GO TO STEP 32

A

29.	CHECK RH SIDE TURN SIGNAL LIGHTS (OUTER MIRROR CONTROL ECU ASSEMBLY RH)

(a) Disconnect the z26 outer mirror control ECU assembly RH connector.

(b) Connect the M4 outer mirror control ECU assembly RH connector.

(c) Operate the turn signal switch and check that the RH side turn signal lights other than the side turn signal light blink.

HINT:

If all RH side turn signal lights do not blink, the outer mirror control ECU assembly RH is malfunctioning.

Result	Proceed to
RH side turn signal lights other than the side turn signal light blink (w/o Power Retract Mirror)	A
RH side turn signal lights other than the side turn signal light blink (w/ Power Retract Mirror)	B
All RH side turn signal lights do not blink	C

B

GO TO STEP 31

C

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH

A

30.	CHECK RH SIDE TURN SIGNAL LIGHTS (OUTER REAR VIEW MIRROR ASSEMBLY RH)

(a) Remove the side turn signal light assembly RH from the outer rear view mirror assembly RH.

Click here

(b) Connect the outer rear view mirror assembly RH connector to the outer mirror control ECU assembly RH connector.

(c) Operate the turn signal switch and check that the RH side turn signal lights other than the side turn signal light blink.

HINT:

If all RH side turn signal lights do not blink, the outer rear view mirror assembly RH is malfunctioning.

Result	Proceed to
RH side turn signal lights other than the side turn signal light blink	A
All RH side turn signal lights do not blink	B

A

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH

B

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH

31.	CHECK RH SIDE TURN SIGNAL LIGHTS (OUTER MIRROR RETRACTOR RH)

(a) Remove the side turn signal light assembly RH from outer rear view mirror assembly RH.

Click here

(b) Connect the outer rear view mirror assembly RH connector to the outer mirror control ECU assembly RH connector.

(c) Operate the turn signal switch and check that the RH side turn signal lights other than the side turn signal light blink.

HINT:

If all RH side turn signal lights do not blink, the outer mirror retractor RH is malfunctioning.

Result	Proceed to
RH side turn signal lights other than the side turn signal light blink	A
All RH side turn signal lights do not blink	B

A

REPLACE SIDE TURN SIGNAL LIGHT ASSEMBLY RH

B

REPLACE OUTER MIRROR RETRACTOR RH

32.	CHECK RH SIDE TURN SIGNAL LIGHTS (TOWING CONVERTER CIRCUIT)

(a) Connect the outer mirror control ECU assembly RH connector.

(b) Disconnect the S27 towing converter relay connector.

(c) Operate the turn signal switch and check that the RH side turn signal lights blink.

HINT:

If all RH side turn signal lights blink, there is a malfunction in the circuit after the S27 connector.

Result	Proceed to
All RH side turn signal lights blink	A
Problem symptoms do not change (All RH side turn signal lights do not blink)	B

A

GO TO TOWING CONVERTER SYSTEM

B

33.	CONFIRM MODEL

(a) Choose the model to be inspected.

Result	Proceed to
for Bulb Type Rear Turn Signal Light	A
for LED Type Rear Turn Signal Light	B

B

GO TO STEP 35

A

34.	CHECK RH SIDE TURN SIGNAL LIGHTS (REAR TURN SIGNAL LIGHT CIRCUIT)

(a) Connect the towing converter relay connector.

(b) Disconnect the S33 rear combination light assembly RH connector.

(c) Operate the turn signal switch and check that the RH side turn signal lights other than the rear turn signal light blink.

HINT:

If the RH side turn signal lights other than the rear turn signal light blink, the rear light cord RH is malfunctioning.

Result	Proceed to
RH side turn signal lights other than the rear turn signal light blink	A
Problem symptoms do not change (All RH side turn signal lights do not blink)	B

A

REPLACE REAR LIGHT CORD RH

B

GO TO STEP 38

35.	CHECK RH SIDE TURN SIGNAL LIGHTS (REAR TURN SIGNAL LIGHT CIRCUIT)

(a) Connect the towing converter relay connector.

(b) Disconnect the S33 rear combination light assembly RH connector.

(c) Disconnect the Z20 rear light assembly RH connector.

(d) Operate the turn signal switch and check that the RH side turn signal lights other than the rear turn signal light blink.

HINT:

If the RH side turn signal lights other than the rear turn signal light blink, the rear combination light assembly RH or rear light socket and wire RH is malfunctioning.

Result	Proceed to
RH side turn signal lights other than the rear turn signal light blink	A
Problem symptoms do not change (All RH side turn signal lights do not blink)	B

B

GO TO STEP 38

A

36.	CHECK RH SIDE TURN SIGNAL LIGHTS (REAR COMBINATION LIGHT ASSEMBLY RH)

(a) Connect the rear combination light assembly RH connector.

(b) Operate the turn signal switch and check that the RH side turn signal lights other than the rear turn signal light blink.

HINT:

If all RH side turn signal lights do not blink, the rear combination light assembly RH is malfunctioning.

Result	Proceed to
RH side turn signal lights other than the rear turn signal light blink	A
All RH side turn signal lights do not blink	B

B

REPLACE REAR COMBINATION LIGHT ASSEMBLY RH

A

37.	CHECK LH SIDE TURN SIGNAL LIGHTS (REAR LIGHT SOCKET AND WIRE LH)

(a) Remove the rear light socket and wire RH from rear light assembly RH.

Click here

(b) Connect the Z20 rear light assembly RH connector.

(c) Operate the turn signal switch and check that the RH side turn signal lights other than the rear turn signal light blink.

HINT:

If all RH side turn signal lights do not blink, the rear light socket and wire RH is malfunctioning.

Result	Proceed to
RH side turn signal lights other than the rear turn signal light blink	A
All RH side turn signal lights do not blink	B

A

REPLACE REAR LIGHT ASSEMBLY RH

B

REPLACE REAR LIGHT SOCKET AND WIRE RH

38.	CHECK HARNESS AND CONNECTOR (RH SIDE (ALL PARTS) - COMBINATION METER ASSEMBLY)

(a) Disconnect the A25*3 or A50*4 headlight assembly RH connector.

(b) Disconnect the M4 outer mirror control ECU assembly RH connector.

(c) Disconnect the S27 towing converter relay connector.

(d) Disconnect the J11 combination meter assembly connector.

(e) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
A25-1 (B)*3, A50-11 (TNS)*4, M4-11 (TRNI) or J11-7 (LR) - Body ground	Always	10 kΩ or higher
S27-10 (TRNR), S33-4 (TRN) or J11-5 (TRNR) - Body ground*1	Always	10 kΩ or higher
S27-10 (TRNR), S33-4 (TRN), Z20-6 (B) or J11-5 (TRNR) - Body ground*2	Always	10 kΩ or higher

OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR