Inspection Procedure

HINT:

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction (See FREEZE FRAME DATA ).

1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0121) 
   1. Connect the Techstream to the DLC3.
   2. Turn the engine switch on (IG).
   3. Turn the Techstream on.
   4. Select the following menu items: Powertrain/Engine and ECT/Trouble Codes.
   5. Read the DTC.

      Result 

      DTC OUTPUT REFERENCE
      
      

      Display (DTC output)	Proceed to
      P0121	A
      P0121 and other DTCs	B

   B :  GO TO DTC CHART

   A : REPLACE THROTTLE BODY