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. CHECK ANY OTHER DTCS OUTPUT 
   1. Connect an intelligent tester to the DLC3.
   2. Turn the power switch on (IG) 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 CHART
      
      

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

   B: GO TO DTC CHART 

   A: REPLACE THROTTLE W/MOTOR BODY ASSEMBLY