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FC Converter Assembly Communication Stop Mode [06/2015 - 11/2018]: Procedure

  1. CHECK FOR OPEN IN CAN BUS LINES (FC CONVERTER ASSEMBLY MAIN LINE) 
    WARNING:

    Be sure to wear insulated gloves.

    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Check that the service plug grip is not installed to FC stack assembly and EV battery.
      NOTE:

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair information because this may cause a malfunction.

    3. Disconnect the Ao2 FC converter assembly connector.
      GTY552086Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Measure the resistance according to the value(s) in the table below.
      GTY604696Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to FC Converter Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      Ao2-1 (CA1H) - Ao2-7 (CA1L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result 
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH LINE OR CONNECTOR (FC CONVERTER ASSEMBLY) 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) 
    WARNING:

    Be sure to wear insulated gloves.

    1. Check that the service plug grip is not installed to FC stack assembly and EV battery.
      NOTE:

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair information because this may cause a malfunction.

    2. Disconnect the Ao2 FC converter assembly connector.
      GTY552086Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disconnect the Ao1 FC converter assembly connector.
      GTY600515Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Measure the resistance according to the value(s) in the table below.
      GTY552414Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to FC Converter Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      Ao2-5 (E1) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      Ao2-12 (E2) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
    5. Reconnect the cable to the negative (-) auxiliary battery terminal.
    6. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      Ao2-6 (+B1) - Body ground Power switch on (IG) 11 to 14 V
      Ao2-13 (+B2) - Body ground Power switch on (IG) 11 to 14 V
      Ao1-8 (IG2) - Body ground Power switch on (IG) 11 to 14 V

      Result

      Result 
      OK
      NG

    Result: 

    OK 

    REPLACE FC CONVERTER ASSEMBLY. Refer to  REMOVAL [06/2015 - 11/2018] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

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