Circuit/System Verification

Engine Running.
Verify DTC P00B3, P00B4, P00B6, P0116, P0117, P0118, or P0119 is not set.
- If the DTC is set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
- If the DTC is not set
Verify the coolant in the radiator surge tank is at the correct level and there are no engine coolant leaks.
- If a condition is found
  Refer to Cooling System Draining and Filling , and Loss of Coolant .
- If a condition is not found
Engine Running for 15 min with the A/C OFF.
Command the Engine Coolant Thermostat Heater to 0 % with a scan tool, depress the accelerator pedal for 5 min.
Verify the scan tool ECT Sensor parameter is between 80° C and 102° C (176° F and 215° F).
- If ECT sensor parameter is not between 80° C and 102° C (176° F and 215° F)
  Replace the engine coolant thermostat.
- If ECT sensor parameter is between 80° C and 102° C (176° F and 215° F)
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Verify the DTC does not set.
- If the DTC sets
  Refer to step 1.
- If the DTC does not set
All OK.