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Home >> Lexus >> 2009 >> GS 460 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0010 & P0441) & Circuit Tests) >> 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

Monitor runs whenever following DTCs 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 or more
Accumulated MAF 1495 g or more
Fuel cut OFF
Difference between ECT at engine start and IAT Less than 40°C (104°F)
ECT SENSOR SOAK MONITOR - TYPICAL ENABLING CONDITIONS

Monitor runs whenever following DTCs not present None
Battery voltage 10.5 V or more
Engine Running
Soak time 5 hours or more
Either (a) or (b) condition met -
(a) ECT 60°C (140°F) or more
(b) Accumulated MAF 2845 g or more