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Home >> Lexus >> 2020 >> UX 200 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 64 (Can Communication System (Diagnostic Codes & Symptom Tests (1 Of 3)) (Hybrid)) >> CAN COMMUNICATION SYSTEM (for HV Model) >> Door Mirror ECU LH Communication Stop Mode [10/2018 - ] >> Procedure

Door Mirror ECU LH Communication Stop Mode [10/2018 - ]: Procedure

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  1. CHECK FOR OPEN IN CAN BUS LINES (OUTER MIRROR CONTROL ECU ASSEMBLY LH BRANCH LINE) 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the outer mirror control ECU assembly LH connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY784606Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Outer Mirror Control ECU Assembly LH)

      Standard Resistance

      Tester Connection Condition Specified Condition
      K11-9 (CANP) - K11-8 (CANN) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY LH) 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K11-7 (GND) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      GTY811418Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Outer Mirror Control ECU Assembly LH)
    2. Reconnect the cable to the negative (-) auxiliary battery terminal.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      K11-5 (SIG) - Body ground Power switch on (IG) 11 to 14 V
      K11-6 (CPUB) - Body ground Power switch off 11 to 14 V
      K11-14 (BDR) - Body ground Power switch off 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH. Refer to  REMOVAL [10/2018 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

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