DTC P0743 TORQUE CONVERTER CLUTCH CIRCUIT ELECTRICAL
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DTC P0743 TORQUE CONVERTER CLUTCH CIRCUIT
ELECTRICAL
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Judge NG when the lock-up duty solenoid becomes
battery short, ground short or open circuit.
Lock-up duty solenoid is installed to the
transmission hydraulic control valve body. The duty ratio is controlled by
the signal from TCM. This allows the lock-up clutch to be connected
or released smoothly by controlling the lock-up control valve.
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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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None
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ECM OPERATION
AT DTC SETTING
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Memorize the freeze frame data. (For test
mode $02)
