DTC P0103 MASS OR VOLUME AIR FLOW CIRCUIT HIGH INPUT
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DTC P0103 MASS OR VOLUME AIR FLOW CIRCUIT
HIGH INPUT
|
Detect the open or short circuit of air flow
sensor. Judge NG when out of the standard value.
(1)
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Air flow
sensor
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(3)
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Voltage
(V)
|
(A)
|
Air
|
(2)
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Intake
air temperature sensor
|
(4)
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Intake
air volume (kg/s)
|
|
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Secondary
Parameters
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Enable
Conditions
|
None
|
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Always perform the diagnosis continuously.
Judge NG when the continuous time until completing
the malfunction criteria below becomes more than 0.5 seconds. Judge
OK and clear the NG when the malfunction criteria below are not
completed.
Judgment Value
Malfunction
Criteria
|
Threshold
Value
|
Output
voltage
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≥ 4.985
V
|
Time Needed for Diagnosis:
0.5
seconds
Malfunction Indicator
Light Illumination:
Illuminates as soon as the malfunction
occurs.
•
|
When the OK idling cycle was completed 40 times
in a row
|
•
|
When “Clear Memory” was
performed
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MALFUNCTION
INDICATOR LIGHT CLEAR CONDITION
|
•
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When the OK driving cycle was completed 3 times
in a row
|
•
|
When “Clear Memory” was
performed
|
•
|
Air flow meter: Engine load is normally calculated
by manifold pressure and engine speed; however, calculated only
by manifold pressure.
|
•
|
EVAP conc. learning (fuel): Not allowed
to learn.
|
|
-
|
At
normal: learned ignition timing value = knock F/B
timing value + whole learning timing value + partial learning
timing value
|
|
-
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At trouble: learned ignition timing
value = −3°CA (retard 3°CA)
|
|
•
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Knock F/B timing value = 0°CA
|
|
•
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Whole learning is not allowed.
|
|
•
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Partial learning is not allowed.
|
•
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ISC control: Make the open loop compensation
to be the given value (1 g (0.04 oz)/s). Stop calculating
the throttle sensor temperature compensation. (Hold the previous
value.)
|
ECM OPERATING
AT DTC SETTING
|
Memorize the freeze frame data. (For test
mode $02)