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Check Reclining Switch System

  1. CHECK FUNCTION 

    With CONSULT-II 

    With "RECLINING SW-FR, RECLINING SWRR" on the DATA MONITOR, operate the reclining switch to check ON/OFF operation.

    MONITOR ITEM AND CONTENTS REFERENCE

    Monitor item [OPERATION or UNIT] Contents
    RECLN SW - FR "ON/OFF" Operation (ON)/open (OFF) status judged from the reclining switch (FR) signal is displayed.
    RECLN SW - RR "ON/OFF" Operation (ON)/open (OFF) status judged from the reclining switch (RR) signal is displayed.
    Fig 1: Display CONSULT II - Data Monitor Screen
    G04130182Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

    Carry out "SWITCH MONITOR" in the on-board diagnosis function, and operate the reclining switch to check.

    Refer to "SWITCH MONITOR ".

    OK or NG 

    • OK : Replace the driver seat control unit.
    • NG : GO TO 2.
  2. CHECK RECLINING SWITCH INPUT/OUTPUT 
    1. Turn ignition switch OFF.
    2. Check voltage between driver seat control unit connector and ground.
      CONNECTORS VOLTAGE REFERENCE

      Connector Terminals (Wire color) Condition Voltage (V) (Approx.)
      (+) (-)
      B143 18 (GY/B) Ground Reclining switch ON (forward operation) 0
      Reclining switch OFF 5
      24 (SB) Reclining switch ON (backward operation) 0
      Reclining switch OFF 5
      Fig 2: Identifying Voltage Between Driver Seat Control Unit Connector And Ground
      G04130183Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK : System is OK.
    • NG : GO TO 3.
  3. CHECK HARNESS CONTINUITY 
    1. Disconnect driver seat control unit connector and power seat switch (driver side) connector.
    2. Check continuity between driver seat control unit connector B143 terminals 18, 24 and power seat switch (driver side) connector B144 terminals 18, 24.

      18 (GY/B) - 18 (GY/B) : Continuity should exist. 

      24 (SB) - 24 (SB) : Continuity should exist. 

    3. Check continuity between driver seat control unit connector B143 terminals 18, 24 and ground.

      18 (GY/B) - Ground : Continuity should not exist. 

      24 (SB) - Ground : Continuity should not exist. 

      Fig 3: Identifying Continuity Between Driver Seat Control Unit Connector B143 Terminals 18, 24 And Ground
      G04130184Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK : GO TO 4.
    • NG : Repair or replace harness between driver seat control unit and power seat switch.
  4. CHECK RECLINING SWITCH 

    Check continuity between driver seat control unit connector B144 terminal 18, 24 and 15.

    CONNECTORS CONTINUITY REFERENCE

    Connector Terminals Condition Continuity
    B144 18 15 Reclining switch ON (forward operation) Yes
    Reclining switch OFF No
    24 Reclining switch ON (backward operation) Yes
    Reclining switch OFF No
    Fig 4: Identifying Continuity Between Driver Seat Control Unit Connector B144 Terminal 18, 24 And 15
    G04130185Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK : GO TO 5.
    • NG : Replace power seat switch (driver side).
  5. CHECK POWER SEAT SWITCH GROUND CIRCUIT 

    Check continuity between power seat switch B144 terminal 15 and ground.

    15 (B) - Ground : Continuity should exist. 

    Fig 5: Identifying Continuity Between Power Seat Switch B144 Terminal 15 And Ground
    G04130186Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK : Check the condition of the harness and connector.
    • NG : Repair or replace harness between power seat switch (driver side) and ground.
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