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MONITOR DESCRIPTION Engine coolant temperature (ECT) sensor cold start monitor When a cold engine start is performed and then the engine is warmed up, if the ECT sensor value does not ECT sensor soak monitor If the ECT sensor value does not change after the warmed up engine is stopped and then the next cold engine MONITOR STRATEGY MONITOR STRATEGY TYPICAL ENABLING CONDITIONS ECT sensor cold start monitor: TYPICAL ENABLING CONDITIONS - ECT SENSOR COLD START MONITOR sensor value does not Related DTCs P0116: Engine coolant temperature (ECT) sensor cold start Required Sensors/Components (Main) ECT sensor None Frequency of Operation Once per driving cycle Duration 10 seconds or more MIL Operation 2 driving cycles Sequence of Operation None Monitor runs whenever following DTCs not present P0112, P0113 (Intake Air Temperature Sensor) 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 1963 g or more Fuel cut OFF Difference between ECT at engine start and IAT Less than 40°C (72°F)
2009 Toyota Tundra 2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra
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