Water pipe leak
Water pipe clogged
Faulty Electric Powertrain Coolant Pump
Electric Powertrain Coolant Pump harness is open or shorted
Electric Powertrain Coolant Pump circuit poor electrical connection
Faulty Motor Control Module (Traction)
Engine Light ON (or Service Engine Soon Warning Light)
The motor control module (traction) cools the motor power inverter (MPI) module (traction) and the voltage control unit (VCU) by issuing operation command to the electric motor control module coolant pump and by recirculating the coolant. The motor control module (traction) monitors actual revolution speed received from the electric motor control module coolant pump and detects a malfunction and stores a DTC when the actual revolution speed is equal to or less than the prescribed lower limit for the prescribed time or more (foreign matter contamination, seizure) or when the actual revolution speed is equal to or more than the prescribed upper limit (over-revolution) continuously for the prescribed time or more.