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Home >> Nissan-Datsun >> 2008 >> Sentra SE-R >> Repair and Diagnosis >> Body & Frame >> Windows >> Glass, Window System & Mirrors >> Rear Window Defogger >> Door Mirror Defogger Circuit Check
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Door Mirror Defogger Circuit Check

  1. CHECK FUSE 

    Check if the following fuse in the fuse block (J/B) is blown.

    FUSE REFERENCE

    Component Parts Ampere Fuse No.
    Fuse block (J/B) 10A 8

    OK or NG 

    OK: GO TO 2.

    NG: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

  2. CHECK HEATED MIRROR RELAY POWER SUPPLY CIRCUIT 
    1. Disconnect heated mirror relay.
    2. Turn ignition switch ON.
    3. Check voltage between heated mirror relay connector and ground.
      CONNECTOR TERMINAL VOLTAGE SPECIFICATION

      Connector Terminals Voltage (V) (Approx.)
      (+) (-)
      E56 1 Ground Battery voltage
      3
      Fig 1: Checking Voltage Between Heated Mirror Relay Connector And Ground
      G04927949Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 3.

    NG: Repair or replace harness.

  3. CHECK HEATED MIRROR RELAY GROUND CIRCUIT 
    1. Turn ignition switch OFF.
    2. Check continuity between heated mirror relay connector E56 terminal 2 and ground.

      2 - Ground : Continuity should exist. 

    OK or NG 

    OK: GO TO 4.

    NG: Repair or replace harness.

    Fig 2: Checking Continuity Between Heated Mirror Relay Connector E56 Terminal 2 And Ground
    G04927950Courtesy of NISSAN MOTOR CO., U.S.A.
  4. INSPECTION OF HEATED MIRROR RELAY 

    Check continuity between heated mirror relay terminals 3 and 5.

    CONNECTOR TERMINAL CONTINUITY SPECIFICATION

    Condition Continuity
    12V direct current supply between terminals 1 and 2 Yes
    No current supply No

    OK or NG 

    OK: GO TO 5.

    NG: Replace heated mirror relay.

    Fig 3: Checking Continuity Between Heated Mirror Relay Terminals 3 And 5
    G04899386Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK HARNESS CONTINUITY 
    1. Disconnect door mirror (LH or RH).
    2. Check continuity between door mirror LH or RH connector (A) and heated mirror relay connector (B).
      CONNECTOR TERMINAL CONTINUITY SPECIFICATION

      Connector Terminal Connector Terminal Continuity
      A B
      D7 (LH) 1 E56 5 Yes
      D106 (RH)
      Fig 4: Checking Harness Continuity
      G04927952Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Check continuity between door mirror LH or RH connector (A) and ground.
      CONNECTOR TERMINAL CONTINUITY SPECIFICATION

      A Ground Continuity
      Connector Terminal
      D7 (LH) 1 No
      D106 (RH)

    OK or NG 

    OK: GO TO 6.

    NG: Repair or replace harness.

  6. CHECK GROUND CIRCUIT 

    Check continuity between door mirror LH or RH connector and ground.

    CONNECTOR TERMINAL CONTINUITY SPECIFICATION

    Connector Terminals Continuity
    D4 (LH) 2 Ground Battery voltage
    D106 (RH)

    OK or NG 

    OK: Replace door mirror (LH or RH). Refer to "REMOVAL AND INSTALLATION ".

    NG: Repair or replace harness.

    Fig 5: Checking Ground Circuit
    G04927953Courtesy of NISSAN MOTOR CO., U.S.A.
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