Inspection Procedure

HINT:

Read freeze frame data using the Techstream. 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. CHECK ANY OTHER DTC OUTPUT (IN ADDITION TO DTC P0121) 
   1. Connect the Techstream to the DLC3.
   2. Turn the ignition switch on (IG).
   3. Turn the tester on.
   4. Select the following menu items: Powertrain/Engine and ECT/Trouble Code.
   5. Read the DTC.

      Result 

      RESULT CHART
      
      

      Display (DTC output)	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

      A: REPLACE THROTTLE BODY  (See THROTTLE BODY )