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 and rear combination light.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK TURN SIGNAL LIGHT FUNCTION

(a) Check that the turn signal lights blink.

Result





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

B -- CHECK HARNESS AND CONNECTOR (FRONT TURN SIGNAL LIGHT - TURN SIGNAL FLASHER AND BODY GROUND)
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:





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

3. CHECK HARNESS AND CONNECTOR (TURN SIGNAL FLASHER - BODY GROUND)

(a) Disconnect the E19 relay 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:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures

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

(a) Disconnect the E19 turn signal flasher connector.

(b) for LH:





(1) Disconnect the A1 light connector.

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

Standard Resistance:





(c) for RH:





(1) Disconnect the A10 light connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures

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

(a) Disconnect the E19 turn signal flasher connector.

(b) for LH:





(1) Disconnect the K4 light connector.

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

Standard Resistance:





(c) for RH:





(1) Disconnect the L3 light connector.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures