LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2009 >> M45 Base >> Repair and Diagnosis >> Body & Frame >> Windows >> Glass, Window System & Mirrors >> Service Information >> Power Window System >> Check encoder Circuit (Rear LH or RH)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Check encoder Circuit (Rear LH or RH)

  1. CHECK POWER WINDOW MOTOR (REAR LH OR RH) POWER SUPPLY
    1. Turn ignition switch ON.
    2. Check voltage between power window motor (rear LH or RH) connector and ground.
      VOLTAGE SPECIFICATION

      Terminal Voltage (V) (Approx.)
      (+) (-)
      Power window motor (rear LH or RH) connector Terminal
      D58 (LH)
      D78 (RH)
      5 Ground 10
      Fig 1: Checking Voltage Between Power Window Motor Connector And Ground
      G05212605Courtesy of NISSAN MOTOR CO., U.S.A.

      OK or NG 

      OK: GO TO  3.

      NG: GO TO 2.

  2. CHECK HARNESS CONTINUITY 1
    1. Turn ignition switch OFF.
    2. Disconnect power window sub-switch (rear LH or RH) and power window motor (rear LH or RH) connector.
    3. Check continuity between power window sub-switch (rear LH or RH) connector and power window motor (rear LH or RH) connector.
      CONTINUITY SPECIFICATION

      A B Continuity
      Power window sub-switch (rear LH or RH) connector Terminal Power window motor (rear LH or RH) connector Terminal
      D60 (LH)
      D80 (RH)
      4 D58 (LH)
      D78 (RH)
      5 Yes
    4. Check continuity between power window sub-switch (rear LH or RH) connector and ground.
      Fig 2: Checking Continuity Between Power Window Sub-Switch Connector And Ground
      G05212606Courtesy of NISSAN MOTOR CO., U.S.A.
      CONTINUITY SPECIFICATION

      A Ground Continuity
      Power window sub-switch (rear LH or RH) connector Terminal
      D60 (LH)
      D80 (RH)
      4 No

      OK or NG 

      OK: Replace power window sub-switch (rear LH or RH).

      NG: Repair or replace harness.

  3. CHECK GROUND CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect power window motor (rear LH or RH) connector.
    3. Check continuity between power window motor (rear LH or RH) connector and ground.
      CONTINUITY SPECIFICATION

      Power window motor (rear LH or RH) connector Terminal Ground Continuity
      D58 (LH)
      D78 (RH)
      3 Yes

      OK or NG 

      OK: GO TO  5.

      NG: GO TO 4.

      Fig 3: Checking Continuity Between Power Window Motor Connector And Ground
      G05212607Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK HARNESS CONTINUITY 2
    1. Disconnect power window sub-switch (rear LH or RH) connector.
    2. Check continuity between power window sub-switch (rear LH or RH) connector and power window motor (rear LH or RH) connector.
      CONTINUITY SPECIFICATION

      A B Continuity
      Power window sub-switch (rear LH or RH) connector Terminal Power window motor (rear LH or RH) connector Terminal
      D60 (LH)
      D80 (RH)
      3 D58 (LH)
      D78 (RH)
      3 Yes
      Fig 4: Checking Continuity Between Power Window Sub-Switch Connector And Power Window Motor Connector
      G05212608Courtesy of NISSAN MOTOR CO., U.S.A.

      OK or NG 

      OK: Replace power window sub-switch (rear LH or RH).

      NG: Repair or replace harness.

  5. CHECK ENCODER SIGNAL
    1. Connect power window motor (rear LH or RH) connector.
    2. Turn ignition switch ON.
    3. Check signal between power window sub-switch (rear LH or RH) connector and ground with oscilloscope.
      SIGNAL SPECIFICATION

      Terminals Signal (Reference value)
      (+) (-)
      Power window sub-switch (rear LH or RH) connector Terminal
      D60 (LH)
      D80 (RH)
      12 Ground Refer to following signal
      15
      Fig 5: Checking Signal Between Power Window Sub-Switch Connector And Ground
      G05212602Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 6: Identifying Signal Waveform
      G05212603Courtesy of NISSAN MOTOR CO., U.S.A.

      OK or NG 

      OK: Replace power window sub-switch (rear LH or RH).

      NG: GO TO 6.

  6. CHECK HARNESS CONTINUITY 3
    1. Turn ignition switch OFF.
    2. Disconnect power window sub-switch (rear LH or RH) and power window motor (rear LH or RH) connector.
    3. Check continuity between power window sub-switch (rear LH or RH) connector and power window motor (rear LH or RH) connector.
      CONTINUITY SPECIFICATION

      A B Continuity
      Power window sub-switch (rear LH or RH) connector Terminal Power window motor (rear LH or RH) connector Terminal
      D60 (LH)
      D80 (RH)
      12 D58 (LH)
      D78 (RH)
      4 Yes
      15 6
    4. Check power window sub-switch (rear LH or RH) connector and ground.
      Fig 7: Checking Continuity Between Power Window Sub-Switch Connector And Power Window Motor Connector
      G05212611Courtesy of NISSAN MOTOR CO., U.S.A.
      CONTINUITY SPECIFICATION

      A Ground Continuity
      Power window sub-switch (rear LH or RH) connector Terminal
      D60 (LH)
      D80 (RH)
      12 No
      15

      OK or NG 

      OK: Replace power window motor (rear LH or RH).

      NG: Repair or replace harness.