DTC P0C73-776: Motor Electronics Coolant Pump "A" Control Performance [11/2016 - ]: Description
WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
The inverter water pump assembly transmits rotation speed information to the hybrid vehicle control ECU assembly. The hybrid vehicle control ECU assembly monitors the speed and detects malfunctions.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
|---|---|---|---|---|---|
| P0C73-776 | Motor Electronics Coolant Pump "A" Control Performance | 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) |
|
Comes on | Master Warning Light: Comes on |
HINT:
The inverter water pump assembly operates when the power switch is on (READY).
RELATED DATA LIST
| DTC No. | ECU Data List |
|---|---|
| P0C73-776 |
|
The following items can be helpful when performing repairs:
Data List
- Inverter Coolant Water Temperature
- Ambient Temperature
RELATED ACTIVE TEST
| DTC No. | Active Test |
|---|---|
| P0C73-776 | Activate the (Inverter) Water Pump |