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CAN COMMUNICATION SYSTEM (for LHD), Diagnostic DTC:U0199

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DTC Code DTC Name
U0199 Lost Communication with "Door Control Module A"
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DESCRIPTION

DTC Code DTC Detection Condition Trouble Area
U0199 There is no communication from the outer mirror control ECU assembly.

  • Power source circuit of outer mirror control ECU assembly

  • Outer mirror control ECU assembly CAN branch wire or connector

  • Outer mirror control ECU assembly

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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 ignition 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 ignition 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).


  2. Click here

    DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL


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

      CAUTION:

      For vehicle with an SRS system:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) 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 (OUTER MIRROR CONTROL ECU ASSEMBLY CAN BRANCH WIRE)


    1. A0158QGE06

      Disconnect the I18 outer mirror control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      I18-1 (CANH) - I18-21 (CANL) Ignition switch off 54 to 69 Ω
      Table 1. Text in Illustration
      *a

      Front view of wire harness connector

      (to Outer Mirror Control ECU Assembly)

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    CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY - BATTERY AND BODY GROUND)


    1. A0158CUE03

      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 I17 outer mirror control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I17-9 (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
      I17-3 (B) - Body ground Always 11 to 14 V
      I17-4 (ACC) - Body ground Ignition switch ACC 11 to 14 V
      Table 2. Text in Illustration
      *a

      Front view of wire harness connector

      (to Outer Mirror Control ECU Assembly)

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    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLYClick here

  6. Click here

    REPAIR OR REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY CAN BRANCH WIRE OR CONNECTOR (CANH, CANL)

  7. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR