DTC P0851 NEUTRAL SWITCH INPUT CIRCUIT LOW (AT MODEL)
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DTC P0851 NEUTRAL SWITCH INPUT CIRCUIT LOW
(AT MODEL)
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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.
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Secondary
Parameters
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Enable
Conditions
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Ignition
switch
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ON
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Battery
voltage
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≥ 10.9
V
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After
starting the engine
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2
seconds or more
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Starter
switch
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OFF
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Perform the diagnosis continuously in 2 seconds
or more after starting the engine.
Judge NG when the continuous time of completing
the malfunction criteria below becomes more than 2.56 seconds. Judge
OK and clear NG when the malfunction criteria below are not completed.
Judgment
Value
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Malfunction
Criteria
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Threshold
Value
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Neutral
switch signal when park/neutral = “OFF” & any
other switches = “ON” on AT
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Low (ON)
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Time Needed for Diagnosis:
2.56
seconds
Malfunction Indicator
Light Illumination:
Illuminates when malfunction occurs in
2 continuous driving cycles.
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•
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When the OK idling cycle was completed 40 times
in a row
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•
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When “Clear Memory” was
performed
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MALFUNCTION
INDICATOR LIGHT CLEAR CONDITION
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•
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When the OK driving cycle was completed 3 times
in a row
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•
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When “Clear Memory” was
performed
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None
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ECM OPERATION
AT DTC SETTING
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Memorize the freeze frame data. (For test
mode $02)
