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Home >> Lexus >> 2009 >> GX 470 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control (SFI) System (Diagnostic Codes (P0010-P0505)) >> SFI System >> DTC P0116: Engine Coolant Temperature Circuit Range / Performance Problem >> Typical Enabling Conditions
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Typical Enabling Conditions

Monitor will run whenever these DTCs are not present P0115, P0117, P0118 (Engine Coolant Temperature Sensor)
COLD START MONITOR:

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)
Soak time 0 seconds or more
Accumulated MAF 2040 g or more
Fuel cut OFF
Difference between ECT at engine start and IAT Less than 40°C (72°F)
SOAK MONITOR:

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 4161 g or more