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Home >> Scion >> 2009 >> tC Standard >> Repair and Diagnosis >> Engine Performance >> 2AZ-FE Engine Control System >> SFI System >> DTC P0116 Engine Coolant Temperature Circuit Range/Performance Problem >> Typical Enabling Conditions
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Typical Enabling Conditions

ECT sensor cold start monitor: 

TYPICAL ENABLING CONDITIONS CHART

Monitor runs whenever the following DTCs are not present None
Battery voltage 10.5 V or more
Time after engine start 1 second or more
ECT at engine start Less than 60°C (140°F)
IAT sensor circuit OK
Soak time 0 second or more
Accumulated MAF 814 g or more
Engine Running
Fuel cut OFF
Difference between ECT at engine start and IAT Less than 40°C (72°F)

ECT sensor soak monitor: 

TYPICAL ENABLING CONDITIONS CHART

Monitor runs whenever the following DTCs are not present None
Battery voltage 10 5 V or more
Engine Running
Soak time 5 hours or more
Either condition (a) or (b) is met -
(a) ECT 60°C (140°F) or more
(b) Accumulated MAF 1359 g or more