Nissan Maxima Service and Repair Manual: Rear window defogger power supply and ground circuit

Nissan Maxima Service and Repair Manual / Driver controls / Defogger / DTC/circuit diagnosis / Rear window defogger power supply and ground circuit

Description

Heats the heating wire with the power supply from the rear window defogger relay to prevent the rear window from fogging up.

Component Function Check

1. CHECK REAR WINDOW DEFOGGER

Check that the heating wire of rear window defogger is heated when turning the rear window defogger switch ON.

Diagnosis Procedure

1. CHECK POWER SUPPLY CIRCUIT

Nissan Maxima. CHECK POWER SUPPLY CIRCUIT

  1. Turn ignition switch ON.
  2. Check voltage between rear window defogger harness connector B53 terminal 1 and ground.

Nissan Maxima. CHECK POWER SUPPLY CIRCUIT

2. CHECK GROUND CIRCUIT

Nissan Maxima. CHECK GROUND CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect rear window defogger.
  3. Check continuity between rear window defogger harness connector B54 terminal 2 and ground.

Nissan Maxima. CHECK GROUND CIRCUIT

3. CHECK HARNESS CONTINUITY 1

Nissan Maxima. CHECK HARNESS CONTINUITY 1

  1. Turn ignition switch OFF.
  2. Disconnect condenser and rear window defogger.
  3. Check continuity between condenser harness connector B52 (A) terminal 1 and rear window defogger harness connector B53 (B) terminal 1.

Nissan Maxima. CHECK HARNESS CONTINUITY 1

4. CHECK HARNESS CONTINUITY 2

Nissan Maxima. CHECK HARNESS CONTINUITY 2

  1. Disconnect fuse block (J/B).
  2. Check continuity between fuse block (J/B) harness connector B4 (A) terminal 10T, 11T and condenser harness connector B52 (B) terminal 1.

Nissan Maxima. CHECK HARNESS CONTINUITY 2

5. CHECK FILAMENT

Check filament.

6. CHECK INTERMITTENT INCIDENT

Check intermittent incident

Component Inspection

1. CHECK FILAMENT

Check the filament for damage or open circuits.

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    Description Heats the heating wire with the power supply from the rear window defogger relay to prevent the door mirror from fogging up. Component Function Check 1. CHECK DOOR MIRROR DEFOGGER L ...

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