DTC P0CEC-00: Electric Water Pump System: High Input
WARNING: This page is about a different variant/trim than selected.
P0CEC: 00 (PCM (PYUL)) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Electric water pump system: High input |
| Detection condition |
- When PCM detects that the electric water pump is energized during sub relay OFF control or that the electric water pump LIN communication line is shorted to the power supply system.
|
| Fail-safe |
- Inhibits engine-stop by i-stop control.
|
| Possible cause |
- Sub relay malfunction (Refer to [RELAY LOCATION
] in service information). (Refer to [RELAY INSPECTION
] in service information).
- Malfunction in wiring harness (including connector/terminal) between sub relay and electric water pump (See CIRCUIT INSPECTION
.) (See CONNECTOR INSPECTION
.)
- Malfunction in wiring harness (including connector/terminal) between electric water pump and PCM (See CIRCUIT INSPECTION
.) (See CONNECTOR INSPECTION
.)
- Electric water pump malfunction (Refer to [
ELECTRIC WATER PUMP NO. 1 INSPECTION [PYUL]
in service information).
- PCM malfunction (Refer to [PCM REMOVAL/INSTALLATION
] in service information).
|
| Repeatability verification procedure |
- Clear the DTC recorded in the memory. (See CLEARING DTC
.)
- Replicate the vehicle conditions at the time the DTC was detected using the following procedure.
WARNING:
- Observe legal speed limits when driving the vehicle and perform the procedure in a location where safety can be assured.
- To prevent an accident, work with two people when the vehicle is being driven (one person drives vehicle, other person operates M-MDS).
- Try to reproduce the malfunction by driving the vehicle based on the values in the freeze frame data/snapshot data.
|
 Courtesy of MAZDA MOTORS CORP.
|
| 1 |
Battery |
| 2 |
Sub relay |
| 3 |
Electric water pump |
| 4 |
PCM |