Inspection Procedure

HINT:

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, 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 ANY 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. Enter the following menus: Powertrain/Engine/Trouble Codes.
   5. Read the DTC.

   Result 

   TYPICAL MALFUNCTION THRESHOLDS
   
   

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

   B: GO TO DTC CHART  (See DIAGNOSTIC TROUBLE CODE CHART )

   A: REPLACE THROTTLE BODY  (See REMOVAL )