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Circuit/System Verification

  1. Vehicle in Service Mode, verify no additional DTCs are set in other control modules.
    • If no additional DTCs are set 
  2. Verify DTCs P0AA1 and P0AA4 are not set with a PASS/FAIL status.
    • If no additional DTCs are set 
    3. NOTE:

    The following setup steps MUST BE PERFORMED EXACTLY in order to exercise the contactors.

  3. Vehicle OFF. Turn ON the park lamps.
    4. NOTE:
    • DO NOT  press the power button and enter Vehicle in Service Mode or Vehicle ON.
    • Ignore P0ABC after pulling the S15 Manual Service Disconnect.
  4. Command the Hybrid/EV Battery Contactors ALL OPEN with a scan tool.
  5. Disconnect the S15 Manual Service Disconnect.
    6. NOTE:
    • DO NOT  use the Release Control button to turn OFF any of the contactors. Once the Release Control button is pushed the Circuit/System Verification will need to be restarted from the beginning.
    • The following steps can be performed in any sequence or a single contactor can be exercised to verify a complaint.
  6. Command the Hybrid/EV Battery DC Charging Negative Contactor CLOSED and ALL OPEN with a scan tool while listening for the contactor to close and open.
  7. Verify the Hybrid/EV Battery DC Charging Negative Contactor is heard closing and opening.
    • If the Hybrid/EV Battery DC Charging Negative Contactor does not open and close 

      Refer to Circuit/System Testing.

    • If the Hybrid/EV Battery DC Charging Negative Contactor does open and close 
  8. Command the Hybrid/EV Battery DC Charging Positive Contactor CLOSED and ALL OPEN with a scan tool while listening for the contactor to close and open.
  9. Verify the Hybrid/EV Battery DC Charging Positive Contactor is heard closing and opening.
    • If the Hybrid/EV Battery DC Charging Positive Contactor does not open and close 

      Refer to Circuit/System Testing.

    • If the Hybrid/EV Battery DC Charging Positive Contactor does open and close 
  10. All OK.
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