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 (motor/generator) 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 in an abnormally high prescribed range to an operation command equal to or less than the prescribed value continuously for the prescribed time or more.