System Inspection
- Coolant Level Inspection
- Check the cooling system coolant level.
- Is the coolant in the reservoir at the proper level?
YES
- Go to next step as below.
NO
- Repair or add engine coolant as necessary and go to VERIFICATION OF VEHICLE REPAIR procedure.
- Thermostat Inspection
- Check if the thermostat bypass valve is stuck in the open position or if the correct type of thermostat was installed. Replace thermostat as necessary and go to VERIFICATION OF VEHICLE REPAIR procedure.
- Check the valve opening temperature of the thermostat
Specification (Valve opening temperature) : 80~84°C (176~183°F)
- If the opening temperature is not as specified, Replace thermostat as necessary and go to VERIFICATION OF VEHICLE REPAIR procedure. ECM
If OK, go to next step as below.
- ECT Sensor Inspection
- Ignition "OFF"
- Disconnect ECTS connector
- Measure the resistance between signal terminal and ground terminal of ECTS connector. (Component side)
Specification:
TEMPERATURE AND RESISTANCE SPECIFICATION CHARTTemp. (°C) Temp. (°F) Resistance (kΩ) Temp. (°C) Temp. (°F) Resistance (kΩ) -20 -4 14.1 ~ 16.8 40 104 Approx. 1.2 0 32 Approx. 5.8 60 140 Approx. 0.6 20 68 2.3 ~ 2.6 80 176 Approx. 0.3 - Is resistance within the specification?
YES
- Go to next step as below
NO
- Check ECTS for contamination, deterioration, or damage. Substitute with a known-good ECTS and check for proper operation. If the problem is corrected, replace ECTS and then go to VERIFICATION OF VEHICLE REPAIR procedure.