Circuit Description
The ECT sensor is a thermistor that monitors coolant temperature. DTC is set when ECM detects a open or short circuit. Possible causes are:
- ECT sensor open or short circuit.
- ECT sensor.
- ECM.
NOTE:
If DTCs P0110, P0115 and P0120 are output together, inspect ECM terminal E2 (ground) circuit. Repair as necessary. See appropriate wiring diagram in WIRING DIAGRAMS
article.