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Hybrid Vehicle Control ECU Communication Stop Mode [10/2015 - ]: Procedure

  1. CHECK FOR OPEN IN CAN BUS LINES (HYBRID VEHICLE CONTROL ECU ASSEMBLY BRANCH LINE) 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the D136 hybrid vehicle control ECU assembly connector.
      GTY540261Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU Assembly)
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Value
      D136-25 (CA1H) - D136-24 (CA1L) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY) 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) 
    1. Reconnect the D136 hybrid vehicle control ECU assembly connector.
    2. Disconnect the D135 hybrid vehicle control ECU assembly connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY588547Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU Assembly)

      Standard Resistance

      Tester Connection Condition Specified Value
      D135-6 (E1) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU Assembly)

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND TERMINAL) 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) 
    1. Reconnect the D135 hybrid vehicle control ECU assembly connector.
    2. Connect the cable to the negative (-) auxiliary battery terminal.
    3. Measure the voltage according to the value(s) in the table below.
      GTY571973Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Hybrid Vehicle Control ECU Assembly)

      Standard Voltage

      Tester Connection Condition Specified Value
      A68-4 (+B1) - Body ground Power switch on (IG) 11 to 14 V
      A67-1 (+B2) - Body ground Power switch on (IG) 11 to 14 V

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY 

    (Refer to REMOVAL [10/2015 - ] )

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE TERMINAL) 

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