Inspection Procedure

HINT:

Read freeze frame data using 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 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 TABLE
   
   

   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 TABLE

   A: REPLACE THROTTLE BODY  (See REMOVAL )