DTC P0748 PRESSURE CONTROL SOLENOID “A” ELECTRICAL
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DTC P0748 PRESSURE CONTROL SOLENOID “A” ELECTRICAL
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Judge NG when the line pressure duty solenoid
becomes battery short, ground short or open circuit.
Line pressure duty solenoid is installed
to the transmission hydraulic control valve body. The duty ratio
is controlled by the signal from TCM. This allows controlling the
pressure modifier valve and accumulator control valve A, and allows
the line pressure to be adjusted to the pressure appropriate for
driving condition.
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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.
Judgment
Value
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Malfunction
Criteria
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Threshold
Value
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Vc
at “ON” signal from ECM
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Low
level
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Vc at “OFF” signal
from ECM
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High level
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Time Needed for Diagnosis:
0.14
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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Control the shift to be fixed in 3rd gear.
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ECM OPERATION
AT DTC SETTING
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Memorize the freeze frame data. (For test
mode $02)
