Lighting System - Hazard Warning Switch Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK VEHICLE TYPE
INSPECT HAZARD WARNING SIGNAL SWITCH
CHECK HARNESS AND CONNECTOR (HAZARD WARNING SIGNAL SWITCH - TURN SIGNAL FLASHER ASSEMBLY AND BODY GROUND)
INSPECT MULTI-DISPLAY (HAZARD WARNING SIGNAL SWITCH)
CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY [HAZARD WARNING SIGNAL SWITCH] - TURN SIGNAL FLASHER ASSEMBLY AND BODY GROUND)
LIGHTING SYSTEM - Hazard Warning Switch Circuit
DESCRIPTION
The turn signal flasher receives a hazard warning signal switch information signal, and illuminates the turn signal lights.
WIRING DIAGRAM
INSPECTION PROCEDURE
Check the vehicle type.
Result| Result | Proceed to |
| w/o Multi-display | A |
| w/ Multi-display | B |
| 2.INSPECT HAZARD WARNING SIGNAL SWITCH |
Remove the hazard warning signal switch ().
Inspect the hazard warning signal switch ().
| | REPLACE HAZARD WARNING SIGNAL SWITCH ()
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| 3.CHECK HARNESS AND CONNECTOR (HAZARD WARNING SIGNAL SWITCH - TURN SIGNAL FLASHER ASSEMBLY AND BODY GROUND) |
Disconnect the F11 hazard warning signal switch connector.
Disconnect the E19 turn signal flasher connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| F11-4 (F) - E19-8 (HAZ) | Always | Below 1 Ω |
| F11-1 (E) - Body ground |
| F11-4 (F) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| OK | |
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| PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE ()
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| 4.INSPECT MULTI-DISPLAY (HAZARD WARNING SIGNAL SWITCH) |
Remove the multi-display ().
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Switch Condition | Specified Condition |
| 21 (HAZ) - Body ground (Multi-display body ground) | Hazard warning switch on | Below 1 Ω |
| Hazard warning switch off | 10 kΩ or higher |
| | REPLACE MULTI-DISPLAY (HAZARD WARNING SIGNAL SWITCH) ()
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| 5.CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY [HAZARD WARNING SIGNAL SWITCH] - TURN SIGNAL FLASHER ASSEMBLY AND BODY GROUND) |
Disconnect the F79 multi-display connector.
Disconnect the E19 turn signal flasher connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| F79-21 (HAZ) - E19-8 (HAZ) | Always | Below 1 Ω |
| F79-13 (GND1) - Body ground |
| F79-21 (HAZ) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| OK | |
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| PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE ()
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