Neutral Switch Input Circuit Low (MT Model)

DTC P0851 - NEUTRAL SWITCH INPUT CIRCUIT LOW (MT MODEL)

OUTLINE OF DIAGNOSIS
Judge the open or short circuit of the neutral SW.
Judge NG when there is no change in the neutral SW even if the driving shift was applied. (There is neutral SW ON/OFF inversion from the vehicle speed and engine speed.)




ENABLE CONDITION

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

DIAGNOSTIC METHOD




Judge NG when the malfunction criteria are completed 3 time or more after the neutral SW change. And clear NG if there is change in the neutral SW.

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)