DTC P0126 INSUFFICIENT COOLANT TEMPERATURE FOR STABLE OPERATION
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DTC P0126 INSUFFICIENT COOLANT TEMPERATURE
FOR STABLE OPERATION
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Judge NG when the engine coolant temperature
sensor output does not change.
Judge NG when the engine coolant temperature
sensor output does not change though the vehicle is operated in
a manner which is expected to affect the coolant temperature.
(1)
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Connector
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(A)
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Resistance
(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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Battery
voltage
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≥ 10.9
V
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Kept
for 20 seconds with vehicle speed ≥ 30km/h (18.6
MPH)
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Experienced
5 times
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Kept for 20 seconds with idling
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Experienced 5 times
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Perform the diagnosis once after idling and
driving for predetermined time. (Judge OK/NG.)
Judge NG when the following criteria are
satisfied, and OK when not satisfied.
Judgment Value
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Malfunction
Criteria
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Threshold
Value
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Engine
coolant temperature sensor Max. voltage - Min. voltage
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< 15
mV
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Time Needed for Diagnosis:
Not
fixed.
Malfunction Indicator
Light Illumination:
Detect when malfunction occurs in 2 continuous
driving cycles.
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•
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When the OK idling cycle is 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 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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None
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ECM OPERATION
AT DTC SETTING
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Memorize the freeze frame data. (For test
mode $02)
