2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1386
4. If all circuits test normal, replace the appropriate fuel level sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Primary Fuel Level Sensor Replacement (See: Powertrain Management/Computers and Control Systems/Fuel Level Sensor/Service and
Repair)
* Secondary Fuel Tank Module Replacement (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Tank Unit/Service and
Repair/Secondary Fuel Tank Module Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for the ECM replacement, programming and setup
P0480
DTC P0480, P0691, or P0692 (without/LF1)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0480
- Cooling Fan Speed Output Circuit
DTC P0691
- Cooling Fan Speed Output Circuit Low Voltage
DTC P0692
- Cooling Fan Speed Output Circuit High Voltage
Diagnostic Fault Information
Circuit/System Description
The engine control module (ECM) commands the cooling fan depending on cooling requirements. The ECM controls the cooling fan speed by
commanding the cooling fan control module. The cooling fan control module supplies the power and ground circuits for the cooling fan. The ECM
sends a pulse width modulated (PWM) signal to the cooling fan control module. The cooling fan control module interprets the signal and operates
the cooling fan at the commanded speed.
Conditions for Running the DTC
* The engine speed is greater than 0 RPM.
* The ignition voltage is between 10-18 volts.
* The DTCs run continuously once the above conditions are met.
Conditions for Setting the DTC
The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match for greater than 1 second.
Action Taken When the DTC Sets
DTCs P0480, P0691, and P0692 are Type B DTCs.
Conditions for Clearing the MIL/DTC
