2010 Cadillac Truck SRX AWD V6-3.0L Page 1527
Typical Scan Tool Data
Circuit/System Description
The engine cooling fan system is composed of one cooling fan, a series of 5 relays, the engine control module (ECM), and the associated wiring.
The cooling fan assembly includes two individual resistors mounted to each side of the cooling fan shroud. This combination of components
enables the ECM to operate the cooling fan at 3 speeds using two fan control circuits.
To operate the fan, the ECM activates the applicable relay by grounding the control circuit with a solid state device called a driver. The driver is
equipped with a feedback circuit. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the
feedback voltage.
Conditions for Running the DTC
