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P0123

DTC P0123 - THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT HIGH INPUT

OUTLINE OF DIAGNOSIS
Detect the open or short circuit of throttle position sensor.
Judge NG when out of the standard value.




COMPONENT DESCRIPTION




ENABLE CONDITION

GENERAL DRIVE CYCLE
Always perform the diagnosis continuously.

DIAGNOSTIC METHOD




Judge NG when the continuous time until completing the malfunction criteria becomes more than the time (2.5 seconds) needed for diagnosis.
Judge fail safe NG when the continuous time until completing the malfunction criteria becomes more than the time (0.1 seconds) needed for diagnosis. Judge OK and clear the NG when the malfunction criteria are completed.

DTC CLEAR CONDITION
- When the OK idling cycle is completed 40 times in a row
- When "Clear Memory" was performed

MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle was completed 3 times in a row
- When "Clear Memory" was performed

FAIL SAFE
Fix the throttle position to 6.4 °.

ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)