Inspection Procedure

HINT:

• If DTC P0115, P0116, P0117, P0118 and P0125 are output simultaneously, the ECT sensor circuit may be open or shorted. Perform the troubleshooting of DTC P0115, P0117 or P0118 first.
• Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0116) 
   1. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
   2. Turn the ignition switch ON.
   3. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
   4. Read the DTCs.

      Result 

      RESULT REFERENCE
      
      

      Display (DTC output)	Proceed to
      P0116	A
      P0116 and other DTCs	B

   B: GO TO RELEVANT DTC CHART 

   A: Go to next step 

2. INSPECT THERMOSTAT 
   1. Remove the thermostat (see REMOVAL ).
   2. Check the valve opening temperature of the thermostat.

      OK: 

      80 to 84°C (176 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 (see INSTALLATION ).

   NG: REPLACE THERMOSTAT 

   OK: REPLACE ENGINE COOLANT TEMPERATURE SENSOR