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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Rear window defogger relay
Description Power is supplied to the rear window defogger with BCM control. Component Function Check 1. Check rear window defogger relay power supply circuit Turn ignition switch ON. Check ...

Other materials:

Precaution for Work
When removing or disassembling each component, be careful not to damage or deform it. If a component may be subject to interference, be sure to protect it with a shop cloth. When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the component with a ...

Power supply and ground circuit
Av control unit Av control unit : diagnosis procedure Regarding wiring diagram information, refer to av-331, "wiring diagram". 1.Check fuse Check that the following fuses are not blown. Are the fuses blown? Yes >> replace the blown fuse after repairing the affected circuit. ...

Basic inspection
Diagnosis and repair work flow Work flow Overall sequence Detailed flow 1.Get information for symptom Get the detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurred) using the “diagnostic work sheet”. ( ...

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