Inspection Procedure

HINT:

Read freeze frame data using a 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 DTCS OUTPUT (IN ADDITION TO DTC P0121) 
   1. Connect a Techstream to the DLC3.
   2. Turn the ignition switch to ON.
   3. Turn the tester ON.
   4. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes.
   5. Read DTCs.

      Result 

      RESULT REFERENCE
      
      

      Result	Proceed to
      P0121	A
      P0121 and other DTCs	B

      HINT:

      If any DTCs other than P0121 are output, troubleshoot those DTCs first.

   B: Go to DTC CHART  (See DIAGNOSTIC TROUBLE CODE CHART  )

   A : REPLACE THROTTLE BODY  (See DIAGNOSTIC TROUBLE CODE CHART  )