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Absorber Control ECU Communication Stop Mode [11/2017 - ]: Procedure

  1. CHECK VEHICLE TYPE 
    1. Check vehicle type.

      Result

      Result Proceed to
      w/o VGRS System A
      w/ VGRS System B

    Result: 

    B 

    See step  4

    Result: 

    A 

    See step  2

  2. CHECK FOR OPEN IN CAN BUS LINES (ABSORBER CONTROL ECU BRANCH LINE) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the O38 absorber control ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      O38-7 (CANH) - O38-8 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      GTY797946Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Absorber Control ECU)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (ABSORBER CONTROL ECU) 

    Result: 

    OK 

    See step  3

  3. 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
      O38-5 (GND) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω
      GTY832259Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Absorber Control ECU)
    2. Reconnect the cable to the negative (-) battery terminal.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      O38-3 (B) - Body ground Engine switch on (IG) 11 to 14 V

      Result

      Result 
      OK
      NG

    Result: 

    OK 

    REPLACE ABSORBER CONTROL ECU. Refer to  REMOVAL [09/2014 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

  4. CHECK FOR OPEN IN CAN BUS LINES (ABSORBER CONTROL ECU BRANCH LINE) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the O38 absorber control ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      O38-7 (CANH) - O38-8 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      O38-20 (CA2H) - O38-21 (CA2L) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      GTY797947Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Absorber Control ECU)

      Result

      Result
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (ABSORBER CONTROL ECU) 

    Result: 

    OK 

    See step  5

  5. 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
      O38-5 (GND) - Body ground Cable disconnected from negative (-) battery terminal Below 1 Ω
      GTY832259Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Absorber Control ECU)
    2. Reconnect the cable to the negative (-) battery terminal.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      O38-3 (B) - Body ground Engine switch on (IG) 11 to 14 V

      Result

      Result 
      OK
      NG

    Result: 

    OK 

    REPLACE ABSORBER CONTROL ECU. Refer to  REMOVAL [09/2014 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

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