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Home >> Infiniti >> 2006 >> Q45 >> Repair and Diagnosis >> Body & Frame >> Seats >> Automatic Drive Positioner >> Check Rear Lifting Switch Circuit

Check Rear Lifting Switch Circuit

  1. CHECK FUNCTION 

    With CONSULT-II 

    With "LIFT RR SW-UP, LIFT RR SW-DN" on the DATA MONITOR, operate the rear lifting switch to check ON/OFF operation.

    MONITOR ITEM AND CONTENTS REFERENCE

    Monitor item [OPERATION or UNIT] Contents
    LIFT RR SW-UP "ON/OFF" Operation (ON)/open (OFF) status judged from the RR lifter switch (UP) signal is displayed.
    LIFT RR SW-DN "ON/OFF" Operation (ON)/open (OFF) status judged from the RR lifter switch (DOWN) signal is displayed.
    Fig 1: Display CONSULT II - Data Monitor Screen
    G04130192Courtesy of NISSAN MOTOR CO., U.S.A.

    Without CONSULT-II 

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

    OK or NG 

    • OK : Replace the driver seat control unit.
    • NG : GO TO 2.
  2. CHECK REAR LIFTING 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 26 (P/B) Ground Rear lifting switch ON (UP operation) 0
      Rear lifting switch OFF 5
      27 (B/Y) Rear lifting switch ON (DOWN operation) 0
      Rear lifting switch OFF 5
      Fig 2: Identifying Voltage Between Driver Seat Control Unit Connector And Ground
      G04130193Courtesy 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 driver power seat switch connector.
    2. Check continuity between driver seat control unit connector B143 terminals 26, 27 and power seat switch (driver side) connector B144 terminals 26, 27.

      26 (P/B) - 26 (P/B) : Continuity should exist. 

      27 (B/Y) - 27 (P/Y) : Continuity should exist. 

    3. Check continuity between driver seat control unit connector B143 terminals 26, 27 and ground.
      Fig 3: Identifying Continuity Between Driver Seat Control Unit Connector B143 Terminals 26, 27 And Ground
      G04130194Courtesy of NISSAN MOTOR CO., U.S.A.

      26 (P/B) - Ground : Continuity should not exist. 

      27 (B/Y) - Ground : Continuity should not exist. 

    OK or NG 

    • OK : GO TO 4.
    • NG : Repair or replace harness between driver seat control unit and driver power seat switch (driver side).
  4. CHECK REAR LIFTING SWITCH 

    Check continuity between driver seat control unit connector B144 terminal 26, 27 and 15.

    CONNECTORS CONTINUITY REFERENCE

    Connector Terminals Condition Continuity
    B144 26 15 Rear lifting switch ON (UP operation) Yes
    Rear lifting switch OFF No
    27 Rear lifting switch ON (DOWN operation) Yes
    Rear lifting switch OFF No
    Fig 4: Identifying Continuity Between Driver Seat Control Unit Connector B144 Terminal 26, 27 And 15
    G04130195Courtesy 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 connector B144 terminal 15 and ground.

    15 (B) - Ground : Continuity should exist. 

    Fig 5: Identifying Continuity Between Power Seat Switch Connector B144 Terminal 15 And Ground
    G04130196Courtesy 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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