Inspection Procedure

1. Connect an intelligent tester to the DLC3.
2. Turn the power switch on (IG) and turn the tester on.
3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
4. Read the DTCs.

   Result 

   DTC CHART
   
   

   Display (DTC Output)	Proceed To
   P0116	A
   P0116 and other DTCs	B

B: GO TO DTC CHART 

A: Go to next step 

1. Remove the thermostat REMOVAL .
2. Measure the valve opening temperature of the thermostat.

   Standard temperature: 

   80°C to 84°C (176°F to 183°F) 

   HINT:

   In addition to the above check, confirm that the valve is completely closed when the temperature is below the standard.

3. Reinstall the thermostat INSTALLATION .

NG: REPLACE THERMOSTAT 

OK: REPLACE ENGINE COOLANT TEMPERATURE SENSOR