DIESEL THROTTLE BODY ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT DIESEL THROTTLE BODY ASSEMBLY

   
   

   1. Inspect the diesel throttle valve.

      
      

      1. Turn the engine switch on (IG).

      2. Turn the engine switch off and wait 5 seconds.

         Tech Tips

         Be sure to turn off the engine switch before performing this inspection. The fully closed position of the diesel throttle valve is learned when the engine switch is turned off.

      3. Connect the intelligent tester to the DLC3.

      4. Turn the engine switch on (IG).

      5. Turn the intelligent tester on.

      6. Enter the following menus: Powertrain / Engine / Data List / Diesel Throttle / Throttle Sensor Volt % and Throttle Sensor #2 Volt %.

      7. Check that the value of "Throttle Sensor Volt %, Throttle Sensor #2 Volt %" is within the specification.

         Standard Value
         Tester Display Specified Condition Throttle Sensor Volt % 60 to 80% Throttle Sensor #2 Volt %

         If the result is not as specified, replace the throttle body.

      8. Enter the following menus: Powertrain / Engine / Data List / All Data / Throttle Close Learning Val.

      9. Check that the value of "Throttle Close Learning Val" is within the specification.

         Standard Throttle Valve Fully Closed
         Tester Display Specified Condition Throttle Close Learning Val. 14.25 to 21.25 deg

         If the result is not as specified, replace the throttle body.