Turn Signal Light Circuit

LIGHTING (EXT): LIGHTING SYSTEM: Turn Signal Light Circuit
- Turn Signal Light Circuit

DESCRIPTION

The turn signal flasher receives a turn signal switch signal from the headlight dimmer switch, and illuminates the front turn signal light, outer rear view mirror and rear combination light.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK TURN SIGNAL LIGHT

(a) Check that the turn signal lights blink.

Result





*: w/ Side turn signal light.

D -- INSPECT OUTER REAR VIEW MIRROR ASSEMBLY

C -- INSPECT REAR TURN SIGNAL LIGHT BULB

B -- INSPECT FRONT TURN SIGNAL LIGHT BULB
A -- Continue to next step.

2. INSPECT FUSE (LH-IG, TURN-HAZ)

(a) Remove the LH-IG fuse from the main body ECU.





(b) Remove the TURN-HAZ fuse from the engine room relay block.

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

Standard Resistance:





(d) Reinstall the LH-IG and TURN-HAZ fuses.

NG -- REPLACE FUSE
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (TURN SIGNAL FLASHER - BATTERY, IGNITION SWITCH, BODY GROUND)

(a) Disconnect the H39 turn signal flasher assembly connector.





(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:





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

Standard Resistance:





(d) Reconnect the turn signal flasher assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Exterior Lighting System

4. INSPECT FRONT TURN SIGNAL LIGHT BULB

(a) Temporarily replace the front turn signal light bulb with a new or normally functioning one Disassembly.

(b) Check that the front turn signal light turn on.

OK:

Front turn signal light turn on

NG -- CHECK HARNESS AND CONNECTOR (FRONT TURN SIGNAL LIGHT - TURN SIGNAL FLASHER, BODY GROUND)

OK -- END

5. CHECK HARNESS AND CONNECTOR (FRONT TURN SIGNAL LIGHT - TURN SIGNAL FLASHER, BODY GROUND)





(a) for LH:

(1) Disconnect the A15 Front turn signal light LH connector.

(2) Disconnect the H39 turn signal flasher assembly connector.

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

Standard Resistance:





(4) Reconnect the turn signal flasher assembly connector.

(5) Reconnect the Front turn signal light LH connector.

(b) for RH:

(1) Disconnect the A16 Front turn signal light RH connector.

(2) Disconnect the H39 turn signal flasher assembly connector.

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

Standard Resistance:





(4) Reconnect the turn signal flasher assembly connector.

(5) Reconnect the Front turn signal light RH connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE TURN SIGNAL FLASHER ASSEMBLY Removal

6. INSPECT REAR TURN SIGNAL LIGHT BULB

(a) Temporarily replace the rear turn signal light bulb with a new or normally functioning one Disassembly.

(b) Check that the rear turn signal light turn on.

OK:

Rear turn signal light turn on.

NG -- CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT - TURN SIGNAL FLASHER, BODY GROUND)

OK -- END

7. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT - TURN SIGNAL FLASHER, BODY GROUND)





(a) for LH:

(1) Disconnect the O23 rear combination light assembly LH connector.

(2) Disconnect the H39 turn signal flasher assembly connector.

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

Standard Resistance:





(4) Reconnect the turn signal flasher assembly connector.

(5) Reconnect the rear combination light assembly LH connector.

(b) for RH:

(1) Disconnect the O22 rear combination light assembly RH connector.

(2) Disconnect the H39 turn signal flasher assembly connector.

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

Standard Resistance:





(4) Reconnect the turn signal flasher assembly connector.

(5) Reconnect the rear combination light assembly RH connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE TURN SIGNAL FLASHER ASSEMBLY Removal

8. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY





(a) Remove the outer rear view mirror assembly Removal.

(b) Apply battery voltage to the terminals and check that the side turn signal light turn on.

OK:





(c) Reinstall the outer rear view mirror assembly.

NG -- INSPECT OUTER REAR VIEW MIRROR SUB-ASSEMBLY
OK -- Continue to next step.

9. CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR - TURN SIGNAL FLASHER, BODY GROUND)





(a) for LH:

(1) Disconnect the M5 outer rear view mirror assembly LH connector.

(2) Disconnect the H39 turn signal flasher assembly connector.

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

Standard Resistance:





(4) Reconnect the turn signal flasher assembly connector.

(5) Reconnect the outer rear view mirror assembly LH connector.

(b) for RH:

(1) Disconnect the L6 outer rear view mirror assembly RH connector.

(2) Disconnect the H39 turn signal flasher assembly connector.

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

Standard Resistance:





(4) Reconnect the turn signal flasher assembly connector.

(5) Reconnect the outer rear view mirror assembly RH connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (OUTER REAR VIEW MIRROR ASSEMBLY - BODY GROUND)

10. INSPECT OUTER REAR VIEW MIRROR SUB-ASSEMBLY

(a) Temporarily replace the outer rear view mirror sub assembly with a new or normally functioning one Removal.

(b) Check that the side turn signal light turn on.

OK:

Side turn signal light turn on.

NG -- REPAIR OR REPLACE OUTER REAR VIEW MIRROR ASSEMBLY Removal

OK -- END