LIN COMMUNICATION SYSTEM Rear Side Switch Module LIN Communication Malfunction

DESCRIPTION

The rear power seat module switch monitors the LIN communication bus between the components related to the switches on the rear seat.

Tech Tips


  • DTC U0211, U0246, U1130 and U1131 are output simultaneously when: 1) there is an open or short in the LIN communication bus between the switches on the rear seat, and 2) their LIN communication bus stops.

  • For vehicles with seat heater system or climate control seat system only.

WIRING DIAGRAM

A001BWVE10

CAUTION / NOTICE / HINT

Note

When using the intelligent tester with the engine switch off to troubleshoot:

Connect the intelligent tester to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the tester and vehicle begins.

PROCEDURE


  1. CLEAR DTC


    1. Delete the DTC Click here.


    NEXT

  2. CHECK FOR DTC


    1. Check for DTC Click here.

      Result:
      Result Proceed to
      DTC U0211, U0246, U1130 and U1131 output occurs A
      DTC U0211, U0246, U1130 or U1131 output occurs B
      No DTC output occurs C

    B

    GO TO DTC CHART Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  3. CHECK HARNESS AND CONNECTOR (REAR POWER SEAT MODULE SWITCH - POSITION CONTROL ECU LH)


    1. Disconnect the r2*1 or S15*2 module switch connectors.

      Tech Tips

      *1: except 4-Passenger with Ottoman

      *2: for 4-Passenger with Ottoman

      A001ESJE01

    2. Disconnect the f41 ECU connector.

    3. Measure the resistance and voltage according to the value(s) in the table below.

      Standard resistance
      except 4-Passenger with Ottoman:
      Tester Connection Condition Specified Condition
      r2-12 (MPX) - f41-19 (LIN) Always Below 1 Ω
      r2-12 (MPX) or f41-19 (LIN) - Body ground Always 10 kΩ or higher
      for 4-Passenger with Ottoman:
      Tester Connection Condition Specified Condition
      S15-5 (MPX) - f41-19 (LIN) Always Below 1 Ω
      S15-5 (MPX) or f41-19 (LIN) - Body ground Always 10 kΩ or higher
      Standard voltage
      except 4-Passenger with Ottoman:
      Tester Connection Switch Condition Specified Condition
      r2-12 (MPX) or f41-19 (LIN) - Body ground Engine switch on (IG) Below 1 V
      for 4-Passenger with Ottoman:
      Tester Connection Switch Condition Specified Condition
      S15-5 (MPX) or f41-19 (LIN) - Body ground Engine switch on (IG) Below 1 V
      Result:
      Result Proceed to
      NG A
      OK (for fixed seat type) B
      OK (for power seat) C
      OK (for 4-Passenger with Ottoman) D
      OK (for 5-Passenger with Ottoman) E

    B

    REPLACE REAR POWER SEAT MODULE SWITCH Click here

    C

    REPLACE REAR POWER SEAT MODULE SWITCH Click here

    D

    REPLACE REAR POWER SEAT MODULE SWITCH Click here

    E

    REPLACE REAR POWER SEAT MODULE SWITCH Click here

    A

  4. CLEAR DTC


    1. Reconnect the r2*1 or S15*2 module switch connectors.

      Tech Tips

      *1: except 4-Passenger with Ottoman

      *2: for 4-Passenger with Ottoman

    2. Delete the DTC Click here.


    NEXT

  5. CHECK FOR DTC


    1. Disconnect the f38 ECU connector.

    2. Recheck for DTC Click here.

      Result
      Result Proceed to
      DTC U0211, U0246, U1130 and U1131 output occurs A
      DTC U0211 output occurs B

    B

    REPLACE POSITION CONTROL ECU RH

    A

  6. CLEAR DTC


    1. Reconnect the f38 ECU connector.

    2. Delete the DTC Click here.


    NEXT

  7. CHECK FOR DTC


    1. Disconnect the f41 ECU connector.

    2. Recheck for DTC Click here.

      Result
      Result Proceed to
      DTC U0211, U0246, U1130 and U1131 output occurs A
      DTC U0246 output occurs B
      DTC U0211 and U0246 output occurs C

    B

    REPLACE POSITION CONTROL ECU LH

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

  8. CLEAR DTC


    1. Reconnect the f41 ECU connector.

    2. Delete the DTC Click here.


    NEXT

  9. CHECK FOR DTC


    1. Disconnect the f8 ECU connector.

    2. Recheck for DTC Click here.

      Result:
      Result Proceed to
      DTC U0211, U0246, U1130 and U1131 output occurs A
      DTC U1130 output occurs B

    B

    REPLACE REAR SEAT CLIMATE CONTROL ECU RH

    A

  10. CLEAR DTC


    1. Reconnect the f8 ECU connector.

    2. Delete the DTC Click here.


    NEXT

  11. CHECK FOR DTC


    1. Disconnect the f28*1 or f13*2 ECU connector.

      Tech Tips

      *1: w/ Climate Control Seat System

      *2: w/ Seat Heater System

    2. Recheck for DTC Click here.

      Result
      Result Proceed to
      DTC U0211, U0246, U1130 and U1131 output occurs A
      DTC U1131 output occurs B

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

    REPLACE REAR SEAT CLIMATE CONTROL ECU LH