CAN COMMUNICATION SYSTEM(for RHD), Diagnostic DTC:U0210

DTC Code DTC Name
U0210 Lost Communication with "Seat Control Module C"

DESCRIPTION

DTC Code DTC Detection Condition Trouble Area
U0210 There is no communication from the rear power seat switch.

  • Power source or inside of rear power seat switch

  • Rear power seat switch CAN branch wire or connector

  • Rear power seat switch

WIRING DIAGRAM

A000VFNE23
A000VFNE26

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tech Tips

Operating the power switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

PROCEDURE


  1. PRECAUTION

    Note

    After turning the power switch off, waiting time may be required before disconnecting the cable from the auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the auxiliary battery terminal notice before proceeding with work Click here.


    NEXT

  2. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL


    1. Disconnect the cable from the negative (-) auxiliary battery terminal before measuring the resistances of the CAN main wire and the CAN branch wire.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

      Note

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.


    NEXT

  3. CHECK FOR OPEN IN CAN BUS WIRE (REAR POWER SEAT SWITCH CAN BRANCH WIRE)


    1. A000TD2E01
      Text in Illustration
      *A for 4-Passenger with Ottoman
      *B except 4-Passenger with Ottoman
      *a

      Front view of wire harness connector

      (to Rear Power Seat Switch)

      Disconnect the rear power seat switch connector.

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

      Standard Resistance
      for 4-Passenger with Ottoman
      Tester Connection Switch Condition Specified Condition
      S15-13 (CANH) - S15-14 (CANL) Power switch off 54 to 69 Ω
      except 4-Passenger with Ottoman
      Tester Connection Switch Condition Specified Condition
      z54-5 (CANH) - z54-4 (CANL) Power switch off 54 to 69 Ω

    NG

    REPAIR OR REPLACE REAR POWER SEAT SWITCH CAN BRANCH WIRE OR CONNECTOR (CANH, CANL)

    OK

  4. CHECK HARNESS AND CONNECTOR (REAR POWER SEAT SWITCH - BATTERY AND BODY GROUND)


    1. A000YHNE01
      Text in Illustration
      *A for 4-Passenger with Ottoman
      *B except 4-Passenger with Ottoman
      *a

      Front view of wire harness connector

      (to Rear Power Seat Switch)

      Connect the cable to the negative (-) auxiliary battery terminal.

      Note

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      for 4-Passenger with Ottoman
      Tester Connection Condition Specified Condition
      S15-8 (B) - Body ground Always 11 to 14 V
      except 4-Passenger with Ottoman
      Tester Connection Condition Specified Condition
      z54-14 (B) - Body ground Always 11 to 14 V

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

      Standard Resistance
      for 4-Passenger with Ottoman
      Tester Connection Condition Specified Condition
      S15-1 (E) - Body ground Always Below 1 Ω
      except 4-Passenger with Ottoman
      Tester Connection Condition Specified Condition
      z54-9 (E) - Body ground Always Below 1 Ω
      Result
      Result Proceed to
      OK (for 4-Passenger with Ottoman) A
      OK (for 5-Passenger with Ottoman) B
      OK (for Power Seat) C
      OK (for Fixed Seat Type) D
      NG E

    A

    REPLACE REAR POWER SEAT SWITCH Click here

    B

    REPLACE REAR POWER SEAT SWITCH Click here

    C

    REPLACE REAR POWER SEAT SWITCH Click here

    D

    REPLACE REAR POWER SEAT SWITCH Click here

    E

    REPAIR OR REPLACE HARNESS OR CONNECTOR