DTC Diagnosis Procedure
- CHECK ENGINE COOLANT TEMPERATURE SENSOR 1 POWER SUPPLY CIRCUIT
- Disconnect engine coolant temperature (ECT) sensor 1 harness connector.
- Turn ignition switch ON.
- Check the voltage between ECT sensor 1 harness connector and ground.
ECT sensor 1 Ground Voltage (V) Connector Terminal F21 1 Ground Approx. 5
Is the inspection result normal?
YES>>
GO TO 2.
NO>>
Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK ECT SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between ECT sensor 1 harness connector and ECM harness connector.
ECT sensor 1 ECM Continuity Connector Terminal Connector Terminal F21 2 F91 43 Existed - Also check harness for short to ground and short to power.
Is the inspection result normal?
YES>>
GO TO 3.
NO>>
Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK ENGINE COOLANT TEMPERATURE SENSOR 1
Refer to Component Inspection . Is the inspection result normal?
YES>>
GO TO 4.
NO>>
Replace engine coolant temperature sensor 1.
- CHECK INTERMITTENT INCIDENT
Refer to Inspection .
>>
INSPECTION END