DTC P0118-00: ECT Sensor No. 1 System: High Input
WARNING: This page is about a different variant/trim than selected.
P0118-00: (PCM - VIN Y) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
ECT sensor No. 1 system: High input |
| Detection condition |
- The specified period of time has elapsed while the engine coolant temperature sensor voltage exceeds the standard.
|
| Fail-safe |
- Fixes the water temperature for the engine control at 40°C {104°F}, and for the idle air control at 80°C {176°F}.
- Operates the cooling fan (high speed rotation).
- Inhibits the fuel cut control during shift change.
|
| Possible cause |
- Malfunction in wiring harness (including connector/terminal) between ECT sensor No. 1 and PCM (see CIRCUIT INSPECTION
.) (see CONNECTOR INSPECTION
.)
- ECT sensor No. 1 malfunction (Refer to ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION (VIN Y)
in service information.)
- PCM malfunction (Refer to applicable PCM REMOVAL/INSTALLATION (VIN Y)
in the service information.
|
| Repeatability verification procedure |
- Clear the DTC recorded in the memory. (see CLEARING DTC
.)
- Perform the KOEO or KOER self test. (See DTC INSPECTION
.)
|
 Courtesy of MAZDA MOTORS CORP.
|
| 1 |
PCM |
| 2 |
ECT sensor No. 1 |