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Circuit/System Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
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.

Failure to follow the procedures exactly as written may result in serious injury or death.
  1. Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling .
  2. Disconnect the X2 harness connector at the drive motor generator battery control module.
  3. Connect the EL-48571  to the X2 harness connector.
  4. Install the high voltage manual disconnect lever.
  5. Insert the DMM probes into the EL-48571 test cavities. Measure and record the voltage of each battery by cycling the EL-48571 through each of the 22 switch positions. All voltages should be between 10-15 V and within 1.5 V of each other.
    • If any of the voltage values are not within the specified range, replace the drive motor generator battery assembly.
  6. If all circuits test normal, replace the drive motor generator battery control module.
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