DTC P0C73-776: Motor Electronics Coolant Pump "A" Control Performance [08/2015 - ]: Description

The inverter water pump assembly transmits rotation revolution information to the power management control ECU (HV CPU). The power management control ECU (HV CPU) monitors the revolution and detects malfunctions.

DTC No.	INF Code	DTC Detection Condition	Trouble Area
P0C73	776	A speed or intermittent stop malfunction occurs in the inverter water pump assembly. A revolution malfunction (speed is too high/low) or an intermittent stop malfunction (operation stops intermittently when the revolution speed is abnormal) occurs in the inverter water pump assembly.	Inverter cooling system Wire harness or connector Inverter water pump assembly Power management control ECU

HINT:

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

RELATED DATA LIST

DTC No.	INF Code	Data List Item
P0C73	776	W/P Run Control Duty*1 Inverter W/P Revolution Ready Signal

*1: This Data List item is related to the inverter water pump assembly.

RELATED ACTIVE TEST

DTC No.	INF Code	Active Test
P0C73	776	Activate the Water Pump*2

*2: This is an Active Test of the inverter water pump assembly.