Inspection Procedure

HINT:

Read freeze frame data using the intelligent tester. 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 the intelligent tester to the DLC3.
   2. Turn the ignition switch ON and turn the tester ON.
   3. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
   4. Read DTCs.

      Result 

      RESULT CHART
      
      

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

      HINT:

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

   B : REPLACE THROTTLE POSITION SENSOR 

   A : GO TO  DTC CHART