DTC P314A-828: Inverter Coolant Pump Speed Signal [12/2014 - ]: Description
Refer to the description for DTC P0C73-776. Refer to DESCRIPTION .
The inverter water pump assembly sends the water pump speed (measured value) signal to the hybrid vehicle control ECU. If the inverter water pump speed (measured value) signal is not sent to the hybrid vehicle control ECU when the power switch is on (READY), this DTC is stored.
| DTC No. | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| P314A | 828 | The water pump speed signal is not sent to the hybrid vehicle control ECU when the ignition switch is turned on (READY) or water pump revolution speed is extremely low or stop.*1 (1 trip detection logic) |
|
- *1: Malfunction (open, short to +B or short to ground) in the speed signal line from the inverter water pump assembly or inverter water pump assembly power source circuit malfunction is suspected.
- A malfunction (open, short to +B or short to ground) in the speed signal line from the inverter water pump assembly to the hybrid vehicle control ECU is detected.
- A malfunction in the inverter water pump assembly power source circuit is detected.
- A malfunction in the +B line or speed signal line to the inverter water pump assembly is detected.
- A malfunction in the inverter water pump assembly power source circuit or hybrid vehicle control ECU power source circuit is detected.
RELATED DATA LIST
| DTC No. | Data List |
|---|---|
| P314A-828 |
|
- *2: This Data List item is related to the inverter water pump assembly.
RELATED ACTIVE TEST
| DTC No. | Active Test |
|---|---|
| P314A-828 | Activate the Water Pump*3 |
- *3: This is an Active Test of the inverter water pump assembly.