High Voltage Enabling
High Voltage Enabling
Danger: Ensure all High Voltage safety procedures are followed. Failure to follow the procedure exactly as written may result in serious injury or death.
Danger: 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 procedure exactly as written may result in serious injury or death.
Danger: 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.
Review the high voltage safety information prior to performing the High Voltage Enabling procedure. Refer to High Voltage Safety High Voltage Safety.
1. Ensure that the 12 V battery is disconnected.
Note: Always tighten the high voltage fasteners to the specified torque. Insufficient or excessive torque will cause malfunctions or damage.
2. After finishing work on the high voltage systems and before reinstalling the high voltage manual disconnect lever, inspect for the following:
• Verify that all tools or loose components have been removed.
• Verify high voltage system integrity and that all connectors are installed.
• Verify that all high voltage interlock circuit connectors and covers are installed.
• Install any components or connectors that have been removed or replaced during diagnosis.
3. Install the S15 hybrid/EV battery pack high voltage manual disconnect lever (1).
4. Connect the 12 V battery. Refer to Battery Negative Cable Disconnection and Connection Battery Negative Cable Disconnection and Connection.
5. Vehicle in Service Mode, if the A4 hybrid/EV battery pack, K16 battery energy control module, or any of the hybrid/EV battery interface control modules have been replaced, program the K16 battery energy control module and the hybrid/EV battery interface control modules. Refer to Battery Energy Control Module Programming and Setup Testing and Inspection
6. With the hood open, start the engine, then Vehicle OFF.
7. Vehicle in Service Mode, perform the driver window express learn and clear all DTC Information with a scan tool. Refer to Window Motor Programming - Express Function Testing and Inspection
8. Vehicle OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down.
9. Vehicle in Service Mode, verify with a scan tool no DTCs are set.
• If DTCs are set go to appropriate DTC information. Refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.
10. Start and idle the engine for 2 minutes.
11. Vehicle OFF and wait 5 minutes.
12. Vehicle in Service Mode, verify with the scan tool the T6 traction power inverter module and K114B hybrid/EV powertrain control module 2 DTC Information that the following DTCs have Ran Since Code Clear and have not set:
* Motor position sensor learn DTCs P0C17 and P0C18.
* Contactor DTCs P0AD9, P0ADD, P0D0A, P0D11, P0AE4, and P1EBC.
* Discharge and Pre-charge DTCs P0C76, P0C77, P0C78 and P0AFB.
* High voltage loss of isolation DTCs P0AA6, P1AE6 and P1F0E.
• If the DTCs have Ran and Passed, test drive the vehicle and verify no DTCs are set.
• If the DTCs are set, go to the appropriate DTC information. Refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.
• If the DTCs have Not Ran Since Code Clear, review and operate the vehicle according to the applicable DTC Conditions for Running and ensure the DTCs run and pass.