Nissan Sentra manuals

Nissan Sentra Service Manual: Rear window defogger switch

Description

Component function check

1. Check rear window defogger switch function

  1. Check (“REAR DEF SW”) in BCM - REAR DEFOGGER “DATA MONITOR” mode by using CONSULT.
  2. Operate rear window defogger switch and check the status on consult screen.

Is the inspection result normal?


Is the inspection result normal? Yes >> rear window defogger switch function is ok.

No >> refer to def-30, "diagnosis procedure".

Diagnosis procedure

Regarding wiring diagram information, refer to def-20, "wiring diagram".

1. Check rear window defogger on signal circuit

  1. Turn ignition switch to on.
  2. Turn rear window defogger switch ON.
  3. Check voltage between bcm 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 >> go to 2.

2. Check harness continuity

  1. Turn ignition switch to off.
  2. Disconnect bcm and a/c auto amp.
  3. Check continuity between BCM connector and A/C auto amp.


  1. Check continuity between bcm harness connector and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> Replace A/C auto amp. Refer to HAC-105, "Removal and Installation" (with auto A/C) or HAC- 189, "Removal and Installation" (without auto A/C).

NO >> Repair or replace harness.

Dtc/circuit diagnosis
...

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