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DTC P33B3-00: External BBC Circuit [11/2016 - ]: Procedure

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  1. CONFIRM FREEZE FRAME DATA (STATE OF EXTERNAL BBC) 
    NOTE:

    Clearing the DTC will also clear the freeze frame data, so before clearing be sure to record the freeze frame data.

    1. Following the display on the Techstream, check the freeze frame data and read "State of External BBC" in the freeze frame data when P33B300 was output.

      Powertrain > Stop and Start 

      Tester Display
      State of External BBC
      Techstream Display Proceed to
      Duty Err A
      Cycle Err
      Low Vol B
      Overvoltage C

    Result: 

    A 

    REPLACE EXTERNAL BACKUP BOOST CONVERTER (ECO RUN VEHICLE CONVERTER ASSEMBLY).  Refer to REMOVAL [11/2016 - ] .

    Result: 

    C 

    See step  3

    Result: 

    B 

    Go to next step 

  2. CHECK CONNECTOR (EXTERNAL BACKUP BOOST CONVERTER (ECO RUN VEHICLE CONVERTER ASSEMBLY)) 
    1. Check if the connector of the external backup boost converter (eco run vehicle converter assembly) is connected securely.

      OK

      The connector is securely connected.

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTOR CORRECTLY 

    Result: 

    OK 

    Go to next step 

  3. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - EXTERNAL BACKUP BOOST CONVERTER (ECO RUN VEHICLE CONVERTER ASSEMBLY)) 
    1. Disconnect the engine stop and start ECU connector.
    2. Disconnect the external backup boost converter (eco run vehicle converter assembly) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A92-19 (DON2) - A90-1 (DON2) Always Below 1 Ω
      A92-19 (DON2) or A90-1 (DON2) - Body ground and other terminals Always 10 kΩ or higher
      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    Go to next step 

  4. CHECK HARNESS AND CONNECTOR (EXTERNAL BACKUP BOOST CONVERTER (ECO RUN VEHICLE CONVERTER ASSEMBLY) - BBC NO. 3 FUSE) 
    1. Disconnect the external backup boost converter (eco run vehicle converter assembly) connector.
    2. Remove the BBC NO. 3 fuse from the No. 1 engine room relay block and No. 1 junction block assembly.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A90-11 (BIN) - BBC NO. 3 fuse terminal 2 Always Below 1 Ω
      A90-11 (BIN) or BBC NO. 3 fuse terminal 2 - Body ground and other terminals Always 10 kΩ or higher
      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE EXTERNAL BACKUP BOOST CONVERTER (ECO RUN VEHICLE CONVERTER ASSEMBLY).  Refer to REMOVAL [11/2016 - ] .

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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