Inspection Procedure

HINT:

Read freeze frame data using the intelligent tester. 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.

1. READ OTHER DTC OUTPUT (IN ADDITION TO DTC P0121) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch to the ON position and turn the tester on.
   3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
   4. Read the DTCs.

      Result 

      DTC RESULT REFERENCE
      
      

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

      HINT:

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

   B: GO TO  DTC CHART  

   A: REPLACE THROTTLE BODY