Hazard Warning Switch Circuit

LIGHTING: LIGHTING SYSTEM: Hazard Warning Switch Circuit

Hazard Warning Switch Circuit

DESCRIPTION

The hazard warning switch sends a signal to the turn signal flasher.
The turn signal flasher blinks the turn signal lights.
Also, the main body ECU RH activates the flasher relay when the alarm of the theft deterrent system goes off.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Body / Active Test.
(e) Check the operation.

Body (Main Body ECU RH)





OK:
LH and RH side turn signal lights flash.
NG -- INSPECT FUSE (LH-IG, TURN-HAZ)
OK -- Continue to next step.
2. INSPECT CLOCK ASSEMBLY




(a) Remove the clock assembly.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
Without Navigation System





With Navigation System





NG -- REPLACE CLOCK ASSEMBLY
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY - TURN SIGNAL FLASHER)
(a) Remove the clock assembly.




(b) Disconnect the J30 flasher connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
Without Navigation System





With Navigation System





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
4. INSPECT FUSE (LH-IG, TURN-HAZ)
(a) Remove the LH-IG fuse from the cowl side J/B LH.
(b) Remove the TURN-HAZ fuse from the engine room No. 1 J/B.
(c) Measure the resistance of the fuses.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (POWER SOURCE)




(a) Disconnect the J30 flasher connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
6. CHECK HARNESS AND CONNECTOR
(a) Remove the clock assembly.




(b) Disconnect the J30 flasher connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
Without Navigation System





With Navigation System





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE TURN SIGNAL FLASHER