Diagnostic Test
WARNING: This page is about a different variant/trim than selected.
- CHECK FOR OTHER DTCS
- Refer to the recorded DTCs.
Are there any other Engine Coolant Temperature (ECT) Sensor or Ambient Air Temperature (AAT) Sensor DTCs active or pending?
Yes
- Perform the applicable diagnostic procedure(s). Refer to DIAGNOSTIC CODE INDEX .
No
- Go To 2
- Refer to the recorded DTCs.
- CHECK FOR A LOW COOLANT LEVEL NOTE:
The best way to diagnose this DTC is to allow the vehicle to cold soak until the engine is at ambient temperature.
WARNING:Never open the cooling system when the engine is hot. The system is under pressure. Failure to follow these instructions can result in personal injury including extreme burns, scalding, or fatal injury. Allow the engine to cool before opening the cooling system.
- Check the cooling system to make sure that the coolant is in good condition and at the proper level. Refer to DIAGNOSIS AND TESTING
.
Is the coolant level and condition OK?
Yes
- Go To 3
No
- Inspect the vehicle for a coolant leak and add the necessary amount of coolant. Refer to TECHNICAL SPECIFICATIONS .
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
- Check the cooling system to make sure that the coolant is in good condition and at the proper level. Refer to DIAGNOSIS AND TESTING
.
- CHECK THE COOLING SYSTEM OPERATION NOTE:
If engine coolant temperature is above 65°C (149°F), allow the engine to cool until it is below 65°C (149°F).
- Start the engine.
- Check for proper operation of the cooling system while the engine warms up toward operating temperature. Be certain to check the Radiator Cap, flow through the Radiator and anything that can cause a lack of system pressure or lack of coolant flow in the system.
Were any issues found with the cooling system?
Yes
- Perform the appropriate repair in accordance with the service information.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
No
- Replace the thermostat in accordance with the service information. Refer to THERMOSTAT, REMOVAL .
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .