DTC Diagnosis Procedure
WARNING: This page is about a different variant/trim than selected.
- 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
F28
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
F28
2
F78
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 (Engine Coolant Temperature Sensor 1) .
Is the inspection result normal?
YES
INSPECTION END
NO
Replace engine coolant temperature sensor 1.