DTC P0117 ENGINE COOLANT TEMPERATURE CIRCUIT LOW INPUT
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DTC P0117 ENGINE COOLANT TEMPERATURE CIRCUIT
LOW INPUT
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Detect the open or short circuit of engine
coolant temperature sensor. Judge NG when out of the standard value.
(1)
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Connector
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(A)
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Resistance
value (kΩ)
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(2)
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Thermistor
element
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(B)
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Temperature °C
(°F)
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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.
Judge NG when the continuous time of 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
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Malfunction
Criteria
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Threshold
Value
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Output
voltage
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< 0.165
V
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Time Needed for Diagnosis:
0.5
seconds
Malfunction Indicator
Light Illumination:
Illuminates as soon as the malfunction
occurs.
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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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When “Clear Memory” was
performed
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Engine coolant temperature process: Fix the
engine coolant temperature at 70°C (158°F).
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ISC feedback: Calculate the target
engine speed setting the engine coolant temperature to 70°C
(158°F).
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ISC learning: Not allowed to learn.
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Heavy fuel judgment control: Not allowed
to carry out the heavy judgment.
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Air conditioner control: Not allowed
to turn the air conditioner to ON.
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Radiator fan control: Both main and
sub fan turn to ON.
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Increase compensation factor at high
coolant temperature: Increase normally occurs with high temperature
and other conditions; however, occurs with other conditions except
coolant temperature condition.
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Tumble generator valve control: Open
the tumble generator valve.
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ECM OPERATING
AT DTC SETTING
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Memorize the freeze frame data. (For test
mode $02)
