SFI SYSTEM, Diagnostic DTC:P0196, P0197, P0198

DESCRIPTION

The resistance of the thermistor within the oil temperature sensor changes in accordance with variations in the oil temperature. The method for connecting the oil temperature sensor and the ECM is the same as for the intake air temperature sensor.

MONITOR DESCRIPTION

• P0196

  When a cold engine start is performed and then the engine is warmed up, if the Engine oil temperature sensor value is less than specified value, it is determined that a malfunction has occurred. If this is detected in 2 consecutive driving cycles, the ECM interprets this as a malfunction in the engine oil temperature sensor and stores a DTC.

• P0197, P0198

  The ECM monitors the sensor voltage and uses this value to calculate the engine oil temperature. When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a malfunction in the engine oil temperature sensor circuit and stores a DTC.

CONFIRMATION DRIVING PATTERN

1. 

2. Connect the GTS to the DLC3.

3. Turn the ignition switch to ON and turn the GTS on.

4. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation) Click here.

5. Turn the ignition switch off and wait for at least 30 seconds.

6. Turn the ignition switch to ON and turn the GTS on.

7. Start the engine and warm it up until the engine oil temperature reaches 75°C (167°F) or higher.

8. With the vehicle stationary, depress the accelerator pedal and maintain an engine speed of between 2500 and 3000 rpm for 40 seconds or more [A].

9. Drive the vehicle at 10 km/h (6.25 mph) or more for 1 minute or more [B].

   CAUTION:

   When performing the confirmation driving pattern, obey all speed limits and traffic laws.

10. Enter the following menus: Powertrain / Engine / Trouble Codes.

11. Read pending DTCs.

    Tech Tips

    
    

    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

12. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

13. Input the DTC: P0196, P0197 or P0198.

14. Check the DTC judgment result.

    GTS Display	Description
    NORMAL	DTC judgment completed System normal
    ABNORMAL	DTC judgment completed System abnormal
    INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
    N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips

    
    

    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

15. If the test result is INCOMPLETE or N/A and no DTC is output, perform a universal trip and check for permanent DTCs Click here.

    Tech Tips

    
    

    • If a permanent DTC is output, the system is malfunctioning.

    • If no permanent DTC is output, the system is normal.

WIRING DIAGRAM

*a	Engine Oil Temperature Sensor

CAUTION / NOTICE / HINT

PROCEDURE

1. READ VALUE USING GTS (ENGINE OIL TEMPERATURE)

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the GTS on.

   4. Enter the following menus: Powertrain / Engine / Data List / Engine Oil Temperature.

   5. Read the value displayed on the GTS.

      Result

      Result	Proceed to
      -40°C (-40°F)	A
      215°C (419°F)	B
      Between 75 and 100°C (167 and 212°F)	C

      Tech Tips

      
      

      • If there is an open circuit, the GTS indicates -40°C (-40°F).

      • If there is a short circuit, the GTS indicates higher than 215°C (419°F).

   
   

   B

   READ VALUE USING GTS (ENGINE OIL TEMPERATURE) Click here

   C

   CHECK INTERMITTENT PROBLEMS Click here

   A

2. READ VALUE USING GTS (ENGINE OIL TEMPERATURE)

   
   
   1. 

      Text in Illustration

      *1	Engine oil temperature sensor
      *2	ECM
      *a	Front view of wire harness connector (to Engine oil temperature sensor)

      Disconnect the Engine oil temperature sensor connector.

   2. Connect terminals 1 and 2 of the Engine oil temperature sensor connector on the wire harness side.

   3. Connect the GTS to the DLC3.

   4. Turn the ignition switch to ON.

   5. Turn the GTS on.

   6. Enter the following menus: Powertrain / Engine / Data List / Engine Oil Temperature.

   7. Read the value displayed on the GTS.

      Standard value
      215°C (419°F)

   
   

   OK

   REPLACE ENGINE OIL TEMPERATURE SENSOR Click here

   NG

3. CHECK HARNESS AND CONNECTOR (ECM - ENGINE OIL TEMPERATURE SENSOR)

   
   

   1. Disconnect the engine oil temperature sensor connector.

   2. Disconnect the ECM connector.

   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)
      Tester Connection Condition Specified Condition A36-20 (OT) - C21-2 (OT) Always Below 1 Ω A36-29 (E1) - C21-1 (E2) Always Below 1 Ω

   
   

   OK

   REPLACE ECM Click here

   NG

   REPAIR OR REPLACE HARNESS AND CONNECTOR

4. READ VALUE USING GTS (ENGINE OIL TEMPERATURE)

   
   
   1. 

      Text in Illustration

      *1	Engine oil temperature sensor
      *2	ECM

      Disconnect the Engine oil temperature sensor connector.

   2. Connect the GTS to the DLC3.

   3. Turn the ignition switch to ON.

   4. Turn the GTS on.

   5. Enter the following menus: Powertrain / Engine / Data List / Engine Oil Temperature.

   6. Read the value displayed on the GTS.

      Standard Value
      -40°C (-40°F)

   
   

   OK

   REPLACE ENGINE OIL TEMPERATURE SENSOR Click here

   NG

5. CHECK HARNESS AND CONNECTOR (ECM - ENGINE OIL TEMPERATURE SENSOR)

   
   

   1. Disconnect the engine oil temperature sensor connector.

   2. Disconnect the ECM connector.

   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for short)
      Tester Connection Condition Specified Condition A36-20 (OT) or C21-2 (OT) - Body ground Always 10 kΩ or higher

   
   

   OK

   REPLACE ECM Click here

   NG

   REPAIR OR REPLACE HARNESS AND CONNECTOR