REAR MULTI OPERATION PANEL SYSTEM, Diagnostic DTC:B2673, U0211, U0246

DTC Code DTC Name
B2673 Lost Communication with Rear Seat ECU LIN
U0211 Lost Communication With RR Seat
U0246 Lost Communication With RL Seat

DESCRIPTION

This DTC is stored when a malfunction occurs in the LIN communication circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2673 Lost Communication with Rear Seat ECU LIN A LIN communication malfunction is detected between the rear power seat switch (rear multi operation panel) and position control ECU assembly LH or position control ECU assembly RH.

  • Rear power seat switch (rear multi operation panel)

  • Position control ECU assembly LH

  • Position control ECU assembly RH

  • Rear seat armrest assembly center

  • Harness or connector
U0211 Lost Communication With RR Seat A LIN communication malfunction is detected between the rear power seat switch (rear multi operation panel) and position control ECU assembly RH.

  • Rear power seat switch (rear multi operation panel)

  • Position control ECU assembly RH

  • Harness or connector
U0246 Lost Communication With RL Seat A LIN communication malfunction is detected between the rear power seat switch (rear multi operation panel) and position control ECU assembly LH.

  • Rear power seat switch (rear multi operation panel)

  • Position control ECU assembly LH

  • Harness or connector

WIRING DIAGRAM

B004W7UE02

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Rear Console Switch > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Rear Console Switch > Trouble Codes
      Result
      Result Proceed to
      DTC B2673, U0211 and U0246 are not output. A
      DTC B2673 and U0246 are output. B
      DTC B2673 and U0211 are output. C
      DTC B2673 is output. D
      DTC B2673, U0211 and U0246 are output.

    A

    USE SIMULATION METHOD TO CHECK Click here

    C

    CHECK HARNESS AND CONNECTOR (REAR SEAT ARMREST ASSEMBLY CENTER - POSITION CONTROL ECU ASSEMBLY RH) Click here

    D

    CHECK HARNESS AND CONNECTOR (REAR SEAT ARMREST ASSEMBLY CENTER - POSITION CONTROL ECU ASSEMBLY LH) Click here

    B

  3. CHECK HARNESS AND CONNECTOR (REAR SEAT ARMREST ASSEMBLY CENTER - POSITION CONTROL ECU ASSEMBLY LH)


    1. Disconnect the L80 rear seat armrest assembly center connector.

    2. Disconnect the R41 position control ECU assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L80-3 (LIN) - R41-1 (LINS) Always Below 1 Ω
      L80-3 (LIN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE POSITION CONTROL ECU ASSEMBLY LH


    1. Replace the position control ECU assembly LH with a known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  5. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Rear Console Switch > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  6. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Rear Console Switch > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END (POSITION CONTROL ECU ASSEMBLY LH IS DEFECTIVE)

    NG

    REPLACE REAR POWER SEAT SWITCH (Rear Multi Operation Panel) Click here

  7. CHECK HARNESS AND CONNECTOR (REAR SEAT ARMREST ASSEMBLY CENTER - POSITION CONTROL ECU ASSEMBLY RH)


    1. Disconnect the L80 rear seat armrest assembly center connector.

    2. Disconnect the R7 position control ECU assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L80-3 (LIN) - R7-1 (LINS) Always Below 1 Ω
      L80-3(LIN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. REPLACE POSITION CONTROL ECU ASSEMBLY RH


    1. Replace the position control ECU assembly RH with a known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  9. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Rear Console Switch > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  10. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Rear Console Switch > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END (POSITION CONTROL ECU ASSEMBLY RH IS DEFECTIVE)

    NG

    REPLACE REAR POWER SEAT SWITCH (Rear Multi Operation Panel) Click here

  11. CHECK HARNESS AND CONNECTOR (REAR SEAT ARMREST ASSEMBLY CENTER - POSITION CONTROL ECU ASSEMBLY LH)


    1. Disconnect the L80 rear seat armrest assembly center connector.

    2. Disconnect the R41 position control ECU assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L80-3 (LIN) - R41-1 (LINS) Always Below 1 Ω
      L80-3 (LIN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  12. CHECK HARNESS AND CONNECTOR (REAR SEAT ARMREST ASSEMBLY CENTER - POSITION CONTROL ECU ASSEMBLY RH)


    1. Disconnect the L80 rear seat armrest assembly center connector.

    2. Disconnect the R7 position control ECU assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L80-3 (LIN) - R7-1 (LINS) Always Below 1 Ω
      L80-3 (LIN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. INSPECT REAR SEAT ARMREST ASSEMBLY CENTER


    1. B004U76N02

      Remove the rear seat armrest assembly center.

      Click here

    2. Remove the rear power seat switch (rear multi operation panel).

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 (LIN) - A-3 (LIN) Always Below 1 Ω
      3 (LIN) or A-3 (LIN) - Other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR SEAT ARMREST ASSEMBLY CENTER Click here

    OK

  14. REPLACE POSITION CONTROL ECU ASSEMBLY LH


    1. Replace the position control ECU assembly LH with a known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  15. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Rear Console Switch > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  16. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Rear Console Switch > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END (POSITION CONTROL ECU ASSEMBLY LH IS DEFECTIVE)

    NG

  17. REPLACE POSITION CONTROL ECU ASSEMBLY RH


    1. Replace the position control ECU assembly RH with a known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  18. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Rear Console Switch > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  19. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Rear Console Switch > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END (POSITION CONTROL ECU ASSEMBLY RH IS DEFECTIVE)

    NG

    REPLACE REAR POWER SEAT SWITCH (REAR MULTI OPERATION PANEL) Click here