Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Chevrolet >> 2011 >> Chevy Express G2500, Van Cargo Extended, 6.6 L >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 6.6L (LGH) - DTC P0016 Through DTC P11DC >> Diagnostic Information and Procedures >> DTC P008F >> Code Description >> Circuit/System Description

Circuit/System Description

The engine coolant temperature (ECT) sensor is a variable resistor that measures the temperature of the engine coolant. The engine control module (ECM) supplies 5 V to the ECT sensor signal circuit and supplies a ground to the low reference circuit.

The ECM uses this rationality diagnostic to determine if the input from the ECT sensor or fuel temperature sensor is skewed. The ECM will compare the temperature difference between the ECT sensor and fuel temperature sensor to determine if the temperatures are within an acceptable operating range of each other.

scientia non olet · About Mike's Workshop Manuals