Diagnosis Procedure
- CHECK GROUND CONNECTION
- Turn ignition switch OFF.
- Check ground connection M95. Refer to Ground Inspection in
CIRCUIT INSPECTION
.
Is the inspection result normal?
YES: GO TO 2.
NO: Repair or replace ground connection.
- CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to COMPONENT INSPECTION .
Is the inspection result normal?
YES: GO TO 3.
NO: Replace engine coolant temperature sensor.
- CHECK THERMOSTAT OPERATION
When the engine is cold [lower than 70°C (158°F)] condition, grasp lower radiator hose and confirm that the engine coolant does not flow.
Is the inspection result normal?
YES: GO TO 4.
NO: Repair or replace thermostat. Refer to REMOVAL AND INSTALLATION .
- CHECK INTERMITTENT INCIDENT
Refer to INTERMITTENT INCIDENT .
INSPECTION END