Inspection Procedure

HINT:

Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, as well as other data from the time when a malfunction occurred.

1. Are there any other codes (besides DTC P0121) being output? 

   PREPARATION: 

   1. Connect the hand-held tester or the OBD II scan tool to the DLC3.
   2. Turn the ignition switch ON and push the hand-held tester or the OBD II scan tool main switch ON.
   3. When using the hand-held tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.

   CHECK: 

   Read the DTCs using the hand-held tester or the OBD II scan tool.

   RESULT: 

   DTC OUTPUT RESULT
   
   

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

   HINT:

   If any other codes besides P0121 is output, perform the troubleshooting for those DTCs first.

   1. B : Replace throttle position sensor. 
   2. A : Go to relevant DTC chart (See  DIAGNOSTIC TROUBLE CODE CHART  ).