Toyota Corolla Cross: Steering Knuckle

 Hybrid/EV Battery Negative Contactor Actuator Stuck Closed (P0AA373)

DTC SUMMARY MALFUNCTION DESCRIPTION The hybrid vehicle control ECU detects a stuck closed malfunction of a system main relay on the HV battery negative side. The cause of this malfunction may be one of the following: Inverter voltage sensor (VH) internal circuit malfunction Voltage sensor

 Disassembly

DISASSEMBLY CAUTION / NOTICE / HINT COMPONENTS (DISASSEMBLY) Procedure Part Name Code 1 TRANSPONDER KEY ECU ASSEMBLY 89780 - - - 2 IMMOBILIZER CODE ECU 89784 - - - 3 NO. 2 AIR DUCT 87211A