CUSTOMER CONCERN Customer states the hybrid battery intermittently goes dead while driving. DTCs P0AFB, U0111 and U1897 are stored. CAUSE Power, ground and data-circuit checks isolated lost communication and high-voltage reporting faults to an internally failed Battery Energy Control Module. CORRECTION Remove and replace Battery Energy Control Module. Program and configure replacement module with the correct calibration, clear DTCs and verify hybrid-battery communication.

CUSTOMER CONCERN Customer states the 12-volt battery goes dead and the charging system is inoperative. DTCs P1A63, P1A6B, P1A8F, P1A94 and P1AB1 are stored. CAUSE Connector-terminal, power-feed and ground testing confirmed an internal failure of the Starter Generator Control Module. CORRECTION Remove and replace Starter Generator Control Module. Program and configure replacement module. Clear hybrid-system DTCs and verify 12-volt charging operation.