Circuit/System Testing
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:
Before working on any high voltage system, be sure to wear the following Personal Protection Equipment:
Failure to follow the procedures exactly as written may result in serious injury or death.
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.
WARNING:
The Volt Battery Pack will utilize an exchange program. Please consult the most recent revision of bulletin/PI #PIP4841, available in Service Information (SI), for a list of approved Volt Battery Pack service procedures. Components that may be removed and serviced without exchanging the complete battery pack are identified in the bulletin/PI. Please contact the GM Technical Assistance Center (1-877-446-8227) if you have any questions.
- DTC P1EC5, battery charger or charging system DTCs should not be set.
- If any of the DTCs is set, diagnose first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Verify the scan tool Battery Charger Input parameter is greater than 85 V AC.
- If less than the specified range, disconnect the electronic vehicle supply equipment from the X98 hybrid battery charger receptacle. Disable the high voltage, refer to High Voltage Disabling
. Disconnect the X3 connector at the T18 battery charger. Test the following AC circuit terminals for a short ground or an open/high resistance:
- Terminal A X3
- Terminal C X3
Test the AC ground circuit B X3 for an open/high resistance.
- If less than the specified range, disconnect the electronic vehicle supply equipment from the X98 hybrid battery charger receptacle. Disable the high voltage, refer to High Voltage Disabling
. Disconnect the X3 connector at the T18 battery charger. Test the following AC circuit terminals for a short ground or an open/high resistance:
- If all circuits test normal, replace the T18 battery charger.