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

1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER

1. Connect the intelligent tester to the DLC3.

2. Turn the engine switch on (IG).

3. Turn the intelligent tester on.

4. Select the item(s) in the ACTIVE TEST, and check the operation.

   ACTIVE TEST: Main Body (Main body ECU RH) 

   Item	Test Details	Diagnostic Note
   Hazard	LH and RH side turn signal lights operation ON / OFF	-

   OK:

   LH and RH side turn signal lights flash.
   

NG	Go to step 4

OK

2. INSPECT CLOCK ASSEMBLY

1. Remove the clock assembly.

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

   Standard resistance:

   With Navigation System:

   Tester Connection	Condition	Specified Condition
   J54-12 (F) - J54-2 (E)	Switch is pushed in	Below 1 Ω
   J54-12 (F) - J54-2 (E)	Switch is not pushed in	10 kΩ or higher

   Without Navigation System:

   Tester Connection	Condition	Specified Condition
   J53-12 (F) - J53-8 (E)	Switch is pushed in	Below 1 Ω
   J53-12 (F) - J53-8 (E)	Switch is not pushed in	10 kΩ or higher

NG	REPLACE CLOCK ASSEMBLY

OK

3. CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY - TURN SIGNAL FLASHER)

1. Remove the clock assembly.
   

2. Disconnect the J30 flasher connector.

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

   Standard resistance:

   With Navigation System:

   Tester Connection	Condition	Specified Condition
   J54-12 (F) - J30-8 (HAZ)	Always	Below 1 Ω
   J54-12 (F) - Body ground	Always	10 kΩ or higher

   Without Navigation System:

   Tester Connection	Condition	Specified Condition
   J53-12 (F) - J30-8 (HAZ)	Always	Below 1 Ω
   J53-12 (F) - Body ground	Always	10 kΩ or higher

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)

1. Remove the LH-IG fuse from the cowl side J/B LH.

2. Remove the TURN-HAZ fuse from the engine room No. 1 J/B.

3. Measure the resistance of the fuse.

   Standard resistance:

   Below 1 Ω
   

NG	REPLACE FUSE

OK

5. CHECK HARNESS AND CONNECTOR (POWER SOURCE)

1. Disconnect the J30 flasher connector.

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   J30-7 (E) - Body ground	Always	Below 1 Ω

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

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   J30-4 (B) - Body ground	Always	10 to 14 V
   J30-1 (IG) - Body ground	Engine switch on (IG)	10 to 14 V

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

6. CHECK HARNESS AND CONNECTOR

1. Remove the clock assembly.
   

2. Disconnect the J30 flasher connector.

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

   Standard resistance:

   With Navigation System:

   Tester Connection	Condition	Specified Condition
   J54-12 (F) - J30-8 (HAZ)	Always	Below 1 Ω
   J54-12 (F) - Body ground	Always	10 kΩ or higher

   Without Navigation System:

   Tester Connection	Condition	Specified Condition
   J53-12 (F) - J30-8 (HAZ)	Always	Below 1 Ω
   J53-12 (F) - Body ground	Always	10 kΩ or higher

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPLACE TURN SIGNAL FLASHER