Pinpoint Test 8: DTC P0A1F - Battery Energy Control Module Has Internal Errors
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PINPOINT TEST 8: DTC P0A1F - BATTERY ENERGY CONTROL MODULE HAS INTERNAL ERRORS - HYBRID
Normal Operation
With the ignition switch in the ON position and the engine on or off (the engine must have run at least once after the key was cycled to ON), the traction battery control module (TBCM) monitors the current, voltage, temperature and leakage resistance of the 50 individual nickel metal hydride battery modules within the high-voltage traction battery (HVTB). The TBCM also controls the contactors.
- DTC P0A1F (Battery Energy Control Module Has Internal Errors) - Any internal errors of the HVTB caused by sensor failure, control module failure or other serious related faults internal to the HVTB causes the TBCM to set this DTC.
Possible Causes
- Service disconnect plug
- HVTB
Diagnostic Procedure
WARNING: Wear high-voltage insulated safety gloves and a face shield when working with high-voltage batteries or cables. The high-voltage insulated safety gloves should be of the appropriate safety and protection rating. Inspect the gloves before use and always wear them with the leather outer glove. Any hole in the rubber insulating glove is a potential entry point for high-voltage. Failure to follow these instructions may result in serious personal injury or death.
WARNING: Turn OFF the ignition switch for a minimum of 5 minutes before removing high-voltage cables. High-voltage cables and wiring are orange in color. The nominal high-voltage traction battery voltage (HVTB) is 330 V DC. Failure to follow these instructions may result in serious personal injury or death.
WARNING: Depower the high-voltage traction battery (HVTB) before carrying out any removal or installation procedures affecting the high-voltage battery system. Failure to follow this instruction may result in serious personal injury or death.
WARNING: When servicing the high-voltage system, establish a buffer zone per the specified procedure. Failure to follow this instruction may result in serious personal injury or death.
NOTE: Make sure the service disconnect plug is correctly inserted and locked into the lock position.
