On-Vehicle Inspection
ON-VEHICLE INSPECTIONLow Coolant Temperature (below 78°C or 172°F)
1. TURN IGNITION SWITCH ON
- Check that the fan is stopped.
- If it does not, check the fan relay and temp. switch, and check for a separated connector or severed wire between the relay and temp. switch.
2. DISCONNECT TEMP. SWITCH CONNECTOR
- Check that the fan rotates.
- If it doesn't, check the fan relay, fan motor, engine main relay and fuse, and check for a short circuit between the fan relay and temp. switch.
3. CONNECT TEMP. SWITCH CONNECTOR
High Coolant Temperature (above 88°C (190°F))
4. START ENGINE
(a) Raise engine coolant temperature to above 88°C (190°F).
(b) Check that the fan rotates.
(c) Check that the fan stops when coolant temperature is below 78°C (172°F).
- If it doesn't replace the temperature switch.