Monitor Description
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If the electric water pump assembly operates at less than 10 rpm, the ECM determines there is a malfunction and stores DTC P023A-13.
The electric water pump assembly operates steplessly according to duty cycle signals from the ECM. The ECM monitors the current operation speed of the electric water pump assembly. When the actual drive duty cycle ratio deviates from the target drive duty cycle, the ECM determines there is a malfunction and stores DTC P023A-12 or P023A-14.