DTC P2229 ATMOSPHERIC PRESSURE SENSOR CIRCUIT MALFUNCTION (HIGH INPUT)
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DTC P2229 ATMOSPHERIC PRESSURE SENSOR CIRCUIT
MALFUNCTION (HIGH INPUT)
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Detect the open or short circuit of atmospheric
pressure sensor.
Judge NG when out of the standard value.
Atmospheric pressure sensor is built in ECM.
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Secondary
Parameters
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Enable
Conditions
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None
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Always perform the diagnosis continuously.
Abnormality Judgment
Judge NG when the continuous time of completing
the malfunction criteria below becomes more than 0.5 seconds.
Judgment
Value
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Malfunction
Criteria
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Threshold
Value
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Ignition
switch
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ON
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Output
voltage
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≥ 4.78
V
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Time Needed for Diagnosis:
0.5
seconds
Malfunction Indicator
Light Illumination:
Illuminates as soon as malfunction occurs.
Normality Judgment
Judge OK and clear the NG when the malfunction
criteria below are completed.
Judgment
Value
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Malfunction
Criteria
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Threshold
Value
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Ignition
switch
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ON
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Output
voltage
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< 4.78
V
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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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Atmospheric pressure sensor process: Fix
the atmospheric pressure to 101.3 kPa (760 mmHg, 29.9 inHg).
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ECM OPERATION
AT DTC SETTING
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Memorize the freeze frame data. (For test
mode $02)
