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CAN COMMUNICATION SYSTEM (for LHD), Diagnostic DTC:U0201

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DTC Code DTC Name
U0201 Lost Communication with "Door Control Module C"
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DESCRIPTION

DTC Code DTC Detection Condition Trouble Area
U0201 There is no communication from the rear multiplex network door ECU RH.

  • Power source or inside of rear multiplex network door ECU RH

  • Rear multiplex network door ECU RH CAN branch wire or connector

  • Rear multiplex network door ECU RH
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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

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

Tip:

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

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PROCEDURE


  1. Click here

    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).


  2. Click here

    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).


  3. Click here

    CHECK FOR OPEN IN CAN BUS WIRE (REAR MULTIPLEX NETWORK DOOR ECU RH CAN BRANCH WIRE)


    1. A01GYLME01

      Disconnect the rear multiplex network door ECU RH connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      O3-9 (CANP) - O3-10 (CANN) Power switch off 54 to 69 Ω
      Table 1. Text in Illustration
      *a

      Rear view of wire harness connector

      (to Rear Multiplex Network Door ECU RH)

  4. Click here

    CHECK HARNESS AND CONNECTOR (REAR MULTIPLEX NETWORK DOOR ECU RH - BATTERY AND BODY GROUND)


    1. A01GYLME02

      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
      Tester Connection Condition Specified Condition
      O3-6 (BDR) - Body ground Always 11 to 14 V
      O3-11 (CPUB) - Body ground Always 11 to 14 V
      O3-3 (SIG) - Body ground Power switch on (IG) 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O3-1 (GND) - Body ground Always Below 1 Ω
      Table 2. Text in Illustration
      *a

      Rear view of wire harness connector

      (to Rear Multiplex Network Door ECU RH)

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    REPAIR OR REPLACE REAR MULTIPLEX NETWORK DOOR ECU RH CAN BRANCH WIRE OR CONNECTOR (CANP, CANN)

  6. Click here

    REPLACE REAR MULTIPLEX NETWORK DOOR ECU RHClick here

  7. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR