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Home >> Lexus >> 2008 >> GS 350 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTC P0010 - P0159 >> 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 P0100 to P0103: MAF meter
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 seconds or more
Accumulated MAF 2190 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

Monitor runs whenever following DTCs not present P0100 to P0103: MAF meter
Battery voltage 10.5 V or more
Engine Running
Soak time 5 hours or more
ECT at engine start 60°C (140°F) or more
Accumulated MAF 4820 g or more