DTC P2012 INTAKE MANIFOLD RUNNER CONTROL CIRCUIT LOW (BANK 2)
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DTC P2012 INTAKE MANIFOLD RUNNER CONTROL
CIRCUIT LOW (BANK 2)
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Detect the open or short circuit of tumble
generated valve motor.
Judge NG when the overcurrent signal is sent
from IC after tumble generated valve driving IC diagnosis.
(1)
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Engine
control module (ECM)
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(2)
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Tumble
generated valve
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(3)
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Battery
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Secondary
Parameters
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Enable
Conditions
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Battery
voltage
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≥ 10.9
V
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Always perform the diagnosis continuously.
Judge OK/NG by tumble generator
valve driving IC, and then the result is sent to main IC. At the
main IC, judge NG when the NG signal is sent for 10 times in a row.
Judge OK and clear the NG when the OK signal is sent.
Judgment
Value
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Malfunction
Criteria
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Threshold
Value
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Diagnosis
result signal: Open circuit
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High
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Diagnosis
result signal: Short circuit
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Low
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Time Needed for Diagnosis:
10
times
Malfunction Indicator
Light Illumination:
Illuminates as soon as malfunction occurs.
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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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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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Tumble generated valve opening
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•
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For tumble generated valve all closing points
learning, not allowed to update to closing side.
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•
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For tumble generated valve all opening
points learning, not allowed to update to opening side.
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Tumble generated valve control
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ECM OPERATION
AT DTC SETTING
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Memorize the freeze frame data. (For test
mode $02)
