P0851

DTC P0851 - NEUTRAL SWITCH INPUT CIRCUIT LOW

OUTLINE OF DIAGNOSIS
Detect the open or short circuit of the neutral SW.
Judge NG when the ECM neutral terminal input differs from the reception data from TCM.




ENABLE CONDITION

GENERAL DRIVING CYCLE
Perform the diagnosis continuously in 2 seconds or more after starting the engine.

DIAGNOSTIC METHOD




Judge NG when the number of times of completing the malfunction criteria becomes more than 10 times. Judge OK and clear NG when the malfunction criteria are not completed.

DTC CLEAR CONDITION
- When the OK idling cycle was 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
None

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