Toyota Corolla Cross: Engine Assembly

 Cooling Fan Circuit

DESCRIPTION The ECM turns on or off the fan relays using signals calculated from the engine coolant temperature, air conditioning switch (on/off), air conditioning refrigerant pressure, engine speed and vehicle speed signals. The ECM switches the circuit of the cooling fan motors between series an

 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