Inspection Procedure
NOTE:
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, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction.
- CHECK OTHER DTC OUTPUT(IN ADDITION P0121)
- Connect the hand-held tester or the OBD II scan tool to the DLC3.
- Turn the ignition switch ON and push the hand-held tester or the OBD II scan tool main switch ON.
- Select the item "DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES."
- Read the DTCs.
Result:
DESCRIPTIONDisplay (DTC output) Proceed to P0121 and other DTCs A P0121 B NOTE:If any other codes besides P0121 is output, perform the troubleshooting for those DTCs first.
- B: REPLACE THROTTLE POSITION SENSOR
- A: GO TO RELEVANT DTC CHART (See DIAGNOSTIC TROUBLE CODE CHART )