DTC P0851: Neutral Switch Input Circuit Low (At Model)
- 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 ENABLE CONDITION CHART
Secondary Parameters Enable Conditions Ignition switch ON Battery voltage "GREATER THAN EQUAL TO" 10.9 V After starting the engine 2 seconds or more Starter switch OFF - GENERAL DRIVING CYCLE
Perform the diagnosis continuously in 2 seconds or more after starting the engine.
- DIAGNOSTIC METHOD
Judge NG when the continuous time of completing the malfunction criteria below becomes more than 6.5 seconds. Judge OK and clear NG when the malfunction criteria below are not completed.
Judgment Value
JUDGMENT VALUE CHARTMalfunction Criteria Threshold Value Neutral switch signal when park/neutral = "ON" & any other switches = "OFF" on AT OFF Time Needed for Diagnosis: 6.5 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.
- 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)