DTC P0118: Notes
DTC P0118 DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P0118 |
ECT circuit high input |
| DETECTION CONDITION |
- The PCM monitors ECT sensor signal. If the PCM detected ECT sensor voltage above 4.58 V
, the PCM determines that the ECT sensor circuit has malfunction.
Diagnostic support note
- This is a continuous monitor (Engine cooling system).
- MIL illuminates if PCM detects the above malfunction condition during first drive cycle.
- PENDING CODE is available if PCM detects the above malfunction condition.
- FREEZE FRAME DATA is available.
- DTC is stored in the PCM memory.
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| POSSIBLE CAUSE |
- ECT sensor malfunction
- Open circuit between ECT sensor terminal A and PCM terminal 2AH
- Short to power supply between ECT sensor terminal A and PCM terminal 2AH
- Open circuit between ECT sensor terminal B and PCM terminal 2AY
- Poor connection of ECT sensor or PCM connectors
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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