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Home >> Infiniti >> 2007 >> M35 Base >> Repair and Diagnosis >> Body & Frame >> Windows >> Glass, Window System & Mirrors >> Rear Window Defogger >> Check Door Mirror Defogger Power Supply Circuit

Check Door Mirror Defogger Power Supply Circuit

  1. CHECK FUSE 

    OK or NG 

    OK: GO TO 2.

    NG: If fuse is blown out, be sure to eliminate cause of malfunction before installing new fuse. Refer to "POWER SUPPLY ROUTING CIRCUIT ".

  2. CHECK POWER SUPPLY CIRCUIT 1 
    1. Turn ignition switch ON.
    2. Check voltage between fuse block (J/B) connector and ground.
      VOLTAGE SPECIFICATION

      Terminals Condition of rear window defogger switch Voltage (V) (Approx.)
      (+) (-)
      Fuse block connector Terminal
      E101 2C Ground ON Battery voltage
      OFF 0
      Fig 1: Checking Voltage Between Fuse Block (J/B) Connector And Ground
      G05212670

    OK or NG 

    OK: GO TO 3.

    NG: Repair or replace harness.

  3. CHECK POWER SUPPLY CIRCUIT 2 

    Check voltage between fuse block (J/B) connector and ground.

    VOLTAGE SPECIFICATION

    Terminals Condition of rear window defogger switch Voltage (V) (Approx.)
    (+) (-)
    Fuse block connector Terminal
    M5 5B Ground ON Battery voltage
    OFF 0
    Fig 2: Checking Voltage Between Fuse Block (J/B) Connector And Ground
    G05212671

    OK or NG 

    OK: GO TO 4.

    NG: Replace fuse block (J/B).

  4. CHECK DOOR MIRROR CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect fuse block (J/B) and door mirror connector.
    3. Check continuity between fuse block (J/B) connector and door mirror connector.
      CONTINUITY SPECIFICATION

      A B Continuity
      Fuse block connector Terminal Door mirror connector Terminal
      M5 5B D2 (LH) D39 (RH) 4 Yes
    4. Check continuity between fuse block (J/B) connector and ground.
      CONTINUITY SPECIFICATION

      A Ground Continuity
      Fuse block connector Terminal
      M5 5B No
      Fig 3: Checking Continuity Between Fuse Block (J/B) Connector And Ground
      G05212672

    OK or NG 

    OK: GO TO 5.

    NG: Repair or replace harness between fuse block (J/B) and malfunctioning door mirror connector.

  5. CHECK GROUND CIRCUIT 

    Check continuity between door mirror connector and ground.

    CONTINUITY SPECIFICATION

    Door mirror connector Terminal Ground Continuity
    D2 (LH)
    D39 (RH)    		 8 Yes

    OK or NG 

    OK: GO TO 6.

    NG: Repair or replace harness.

    Fig 4: Checking Continuity Between Door Mirror Connector And Ground
    G05212673
  6. CHECK DOOR MIRROR DEFOGGER 
    1. Connect door mirror connector.
    2. Check door mirror.
      DOOR MIRROR DEFOGGER SPECIFICATION

      Door mirror connector Terminal Continuity
      D2 (LH)
      D39 (RH)      		 4 8 Yes
      Fig 5: Checking Door Mirror
      G05212674

    OK or NG 

    OK: Check condition of harness and connector.

    NG: Replace malfunctioning door mirror.

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