CAN COMMUNICATION SYSTEM(for RHD with Entry and Start System), Diagnostic DTC:U0208

DTC Code DTC Name
U0208 Lost Communication with "Seat Control Module A"

DESCRIPTION

DTC Code DTC Detection Condition Trouble Area
U0208 There is no communication from the front power seat switch RH.

  • Power source or inside front power seat switch RH

  • Front power seat switch RH CAN branch wire or connector

  • Front power seat switch RH

WIRING DIAGRAM

A01XFEVE01
*a No. 2 Junction Connector
*b P/SEAT FR
*c from Battery
*d Front Power Seat Switch RH

CAUTION / NOTICE / HINT

Note

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

Tech Tips

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

PROCEDURE


  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL


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

      CAUTION:

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

      Note


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

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


    NEXT

  2. CHECK FOR OPEN IN CAN BUS WIRE (FRONT POWER SEAT SWITCH RH CAN BRANCH WIRE)


    1. A01XGEXE01
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Front Power Seat Switch RH)

      Disconnect the a5 front power seat switch RH connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      a5-8 (CANP) - a5-7 (CANN) Engine switch off 54 to 69 Ω

    NG

    REPAIR OR REPLACE FRONT POWER SEAT SWITCH RH CAN BRANCH WIRE OR CONNECTOR (CANP, CANN)

    OK

  3. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH RH - BATTERY AND BODY GROUND)


    1. A01XGZZE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Front Power Seat Switch RH)

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

      Note

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

    2. Disconnect the a4 front power seat switch RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      a4-2 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      a4-7 (+B) - Body ground Always 11 to 14 V
      a5-12 (SYSB) - Body ground Always 11 to 14 V

    OK

    REPLACE FRONT POWER SEAT SWITCH RH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR