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Circuit/System Verification

WARNING: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal Protection Equipment (PPE) and proper procedures must be followed.
The High Voltage Disabling procedure will perform the following tasks:
  • Identify how to disable high voltage.
  • Identify how to test for the presence of high voltage.
  • Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed.

Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:
  • Safety glasses with appropriate side shields when within 50 feet of the vehicle, either indoors or outdoors.
  • Certified and up-to-date Class "0" Insulation gloves rated at 1000V with leather protectors.
    • Visually and functionally inspect the gloves before use.
    • Wear the Insulation gloves at all times when working with the high voltage battery assembly, whether the system is energized or not.

Failure to follow the procedures exactly as written may result in serious injury or death.
  1. Ignition OFF, disable the high voltage. Refer to High Voltage Disabling . Disconnect the electronic vehicle supply equipment cord set. Disconnect the X3 harness at the on board charging module. Test for less than 30 Ω between the low reference circuit terminal B and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the on board charging module.
  2. Disconnect the X2 harness at the K114B hybrid powertrain control module 2. Test for 2600-2800 Ω between terminal B X3 T18 battery charger and 15 X2 K114B hybrid powertrain control module 2.
    • If less than the specified range, test for a short to ground.
    • If greater than the specified range, test for an open/high resistance.
  3. Test for 4.5-5.5 V between the Proximity status signal circuit terminal 15 X2 at the K114B hybrid powertrain control module 2 and ground.
    • If less than the specified range, replace the K114B hybrid powertrain control module 2.
  4. If all circuits test normal, replace the K114B hybrid powertrain control module 2.
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