Nissan Sentra manuals

Nissan Sentra Service Manual: Hazard switch

Component function check

1.Check hazard switch signal by consult

Consult data monitor


  1. Turn ignition switch ON.
  2. Select hazard sw of bcm (flasher) data monitor item.
  3. While operating the hazard switch, check the monitor status.

Is the inspection result normal?


Is the inspection result normal? Yes >> hazard switch circuit is normal.

No >> refer to exl-105, "diagnosis procedure".

Diagnosis procedure

Regarding wiring diagram information, refer to exl-58, "wiring diagram".

1.Check hazard switch signal input

  1. Turn ignition switch off.
  2. Disconnect hazard switch connector.
  3. Turn ignition switch on
  4. Check voltage between hazard switch harness connector and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 4.

NO >> GO TO 2.

2.Check hazard switch signal open circuit

  1. Turn ignition switch off.
  2. Disconnect BCM connector.
  3. Check continuity between hazard harness connector and bcm harness connector.

Is the inspection result normal?


Is the inspection result normal? Yes >> go to 3.

No >> repair or replace harness or connector.

3.Check hazard switch signal short circuit

Check continuity between hazard switch harness connector and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> Replace BCM. Refer to BCS-73, "Removal and Installation" (with Intelligent Key system) or BCS- 126, "Removal and Installation" (without Intelligent Key system).

NO >> Repair or replace harness or connector.

4.Check hazard switch ground open circuit

Check continuity between hazard switch harness connector and ground.

Is the inspection result normal?


Is the inspection result normal? Yes >> replace hazard switch. Refer to exl-129, "removal and installation".

No >> repair or replace harness or connector.

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