P1110

DTC P1110 - ATMOSPHERIC PRESSURE SENSOR CIRCUIT MALFUNCTION (LOW INPUT)

OUTLINE OF DIAGNOSIS
- Detect the open/short circuit of atmospheric pressure sensor.
- Judge NG when out of the standard value.

COMPONENT DESCRIPTION
Atmospheric pressure sensor is built in ECM.




ENABLE CONDITION

GENERAL DRIVING 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 not 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 is completed 3 times in a row
- When "Clear Memory" was performed

FAIL SAFE
Make the atmospheric pressure 101 kPa (760 mmHg, 29.9 inHg).

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