DTC P0C73-776: Motor Electronics Coolant Pump "A" Control Performance [10/2015 - ]: Description

The inverter water pump assembly transmits rotation revolution speed information to the hybrid vehicle control ECU assembly. The hybrid vehicle control ECU assembly monitors the revolution speed and detects malfunctions.

DTC No.	INF Code	DTC Detection Condition	Trouble Area
P0C73	776	The inverter water pump assembly revolution speed is abnormally high or low (or stop) for 1 minute or more or the inverter water pump assembly stops intermittently after abnormal revolution speed is detected. (1 trip detection logic)	Inverter cooling system Wire harness or connector Inverter water pump assembly Hybrid vehicle control ECU assembly

HINT:

The inverter water pump assembly operates when the power switch is on (READY).

RELATED DATA LIST

DTC No.	Data List Item
P0C73-776	(Inverter) W/P Run Control Duty Inverter W/P Revolution Ready Signal

RELATED ACTIVE TEST

DTC No.	Active Test
P0C73-776	Activate the (Inverter) Water Pump