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.

WIRING DIAGRAM

A01GXIVE05

INSPECTION PROCEDURE

Note

When using the intelligent tester with the power 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. Clear 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. A01GWJDE27

      Disconnect the z54*1 or S15*2 module switch connector.


      • *1: except 4-Passenger with Ottoman

      • *2: for 4-Passenger with Ottoman

    2. Disconnect the f39 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
      z54-12 (MPX) - f39-19 (LIN) Always Below 1 Ω
      z54-12 (MPX) or f39-19 (LIN) - Body ground Always 10 kΩ or higher
      for 4-Passenger with Ottoman
      Tester Connection Condition Specified Condition
      S15-5 (MPX) - f39-19 (LIN) Always Below 1 Ω
      S15-5 (MPX) or f39-19 (LIN) - Body ground Always 10 kΩ or higher
      Standard voltage
      except 4-Passenger with Ottoman
      Tester Connection Switch Condition Specified Condition
      z54-12 (MPX) or f39-19 (LIN) - Body ground Power switch on (IG) Below 1 V
      for 4-Passenger with Ottoman
      Tester Connection Switch Condition Specified Condition
      S15-5 (MPX) or f39-19 (LIN) - Body ground Power switch on (IG) Below 1 V
      Result
      Result Proceed to
      NG A
      OK (for 4-Passenger with Ottoman) B
      OK (for 5-Passenger with Ottoman) C
      OK (for Power Seat) D
      OK (for Fixed Seat Type) 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 z54*1 or S15*2 module switch connector.


      • *1: except 4-Passenger with Ottoman

      • *2: for 4-Passenger with Ottoman

    2. Clear the DTC Click here.


    NEXT

  5. CHECK FOR DTC


    1. Disconnect the f39 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 (except Ottoman) B
      DTC U0211 output occurs (for Ottoman) C

    B

    REPLACE POSITION CONTROL ECU RH Click here

    C

    REPLACE POSITION CONTROL ECU RH Click here

    A

  6. CLEAR DTC


    1. Reconnect the f39 ECU connector.

    2. Clear the DTC Click here.


    NEXT

  7. CHECK FOR DTC


    1. Disconnect the f43 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 (except Ottoman) B
      DTC U0246 output occurs (for Ottoman) C

    B

    REPLACE POSITION CONTROL ECU LH Click here

    C

    REPLACE POSITION CONTROL ECU LH Click here

    A

  8. CLEAR DTC


    1. Reconnect the f43 ECU connector.

    2. Clear 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 (except Ottoman) B
      DTC U1130 output occurs (for Ottoman) C

    B

    REPLACE REAR SEAT CLIMATE CONTROL ECU RH Click here

    C

    REPLACE REAR SEAT CLIMATE CONTROL ECU RH Click here

    A

  10. CLEAR DTC


    1. Reconnect the f8 ECU connector.

    2. Clear the DTC Click here.


    NEXT

  11. CHECK FOR DTC


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


      • *1: w/ Seat Heater System

      • *2: w/ Climate Control Seat System

    2. Recheck for DTC Click here.

      Result
      Result Proceed to
      DTC U0211, U0246, U1130 and U1131 output occurs A
      DTC U1131 output occurs (except Ottoman) B
      DTC U1131 output occurs (for Ottoman) C

    B

    REPLACE REAR SEAT CLIMATE CONTROL ECU LH Click here

    C

    REPLACE REAR SEAT CLIMATE CONTROL ECU LH Click here

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR