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Home >> Infiniti >> 2024 >> QX55 Essential >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System (DTC/Circuit Diagnosis) >> Circuit Diagnosis >> Encoder >> Rear RH >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK ENCODER SIGNAL 
      1. Ignition switch ON.
      2. Check signal between rear power window switch RH harness connector and ground with oscilloscope.
        Signal name (+) (-) Signal(Reference value)
        Rear power window switch RH
        Connector Terminal
        Encoder signal 1 D304 12 Ground Refer to following signal
        Encoder signal 2 15
        GNSDB110382Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES>>

    Replace rear power window switch RH. Refer to Removal and Installation .

    NO>>

    GO TO 2.

  2. CHECK ENCODER SIGNAL CIRCUIT 
      1. Ignition switch OFF.
      2. Disconnect rear power window switch RH connector and rear power window motor RH connector.
      3. Check continuity between rear power window switch RH harness connector and rear power window motor RH harness connector.
        Rear power window switch RH Rear power window motor RH Continuity
        Connector Terminal Connector Terminal
        D304 12 D305 4 Yes
        15 6
      4. Check continuity between rear power window switch RH harness connector and ground.
        Rear power window switch RH - Continuity
        Connector Terminal
        D304 12 Ground No
        15

    Is the inspection result normal?

    YES>>

    GO TO 3.

    NO>>

    Repair or replace harness.

  3. CHECK ENCODER POWER SUPPLY 
      1. Connect rear power window switch RH connector.
      2. Ignition switch ON.
      3. Check voltage between rear power window motor RH harness connector and ground.
        (+) (-) Voltage(Approx.)
        Rear power window motor RH
        Connector Terminal
        D305 5 Ground Battery voltage

    Is the inspection result normal?

    YES>>

    GO TO 5.

    NO>>

    GO TO 4.

  4. CHECK ENCODER POWER SUPPLY CIRCUIT 
      1. Ignition switch OFF.
      2. Disconnect rear power window switch RH connector.
      3. Check continuity between rear power window switch RH harness connector and rear power window motor RH harness connector.
        Rear power window switch RH Rear power window motor RH Continuity
        Connector Terminal Connector Terminal
        D304 4 D305 5 Yes
      4. Check continuity between rear power window switch RH harness connector and ground.
        Rear power window switch RH - Continuity
        Connector Terminal
        D304 4 Ground No

    Is the inspection result normal?

    YES>>

    Replace rear power window switch RH. Refer to Removal and Installation .

    NO>>

    Repair or replace harness.

  5. CHECK GROUND CIRCUIT 1 
      1. Ignition switch OFF.
      2. Check continuity between rear power window motor RH harness connector and ground.
        Rear power window motor RH - Continuity
        Connector Terminal
        D305 3 Ground Yes

    Is the inspection result normal?

    YES>>

    Replace rear power window motor RH. Refer to Removal and Installation .

    NO>>

    GO TO 6.

  6. CHECK GROUND CIRCUIT 2 
      1. Disconnect rear power window switch RH connector.
      2. Check continuity between rear power window switch RH harness connector and rear power window motor RH harness connector.
        Rear power window switch RH Rear power window motor RH Continuity
        Connector Terminal Connector Terminal
        D304 3 D305 3 Yes
      3. Check continuity between rear power window switch RH harness connector and ground.
        Rear power window switch RH - Continuity
        Connector Terminal
        D304 3 Ground No

    Is the inspection result normal?

    YES>>

    Replace rear power window switch RH. Refer to Removal and Installation .

    NO>>

    Repair or replace harness.

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