Monday, October 26, 2020

2010 Cadillac CTS Sedan AWD V6-3.0L Page 2020

2010 Cadillac CTS Sedan AWD V6-3.0L Page 2020



setup, and programming.



P2763



DTC P2762, P2763, or P2764



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 P2762



- Torque Converter Clutch (TCC) Pressure Control Solenoid System Performance



DTC P2763



- Torque Converter Clutch (TCC) Pressure Control Solenoid Control Circuit High Voltage



DTC P2764



- Torque Converter Clutch (TCC) Pressure Control Solenoid Control Circuit Low Voltage



Diagnostic Fault Information



Typical Scan Tool Data



Circuit/System Description



The torque converter clutch (TCC) pressure control solenoid is part of the control solenoid valve assembly which has no serviceable parts. The



normally low TCC PC solenoid regulates oil pressure to the TCC regulator valve and TCC control valve. Increasing TCC PC solenoid oil pressure



increases oil pressure to the torque converter to apply the clutch. The TCM varies the current to the TCC PC solenoid through a low side driver.



Increasing current to the TCC PC solenoid increase oil pressure by closing OFF the solenoid exhaust port. Decreasing current to the TCC PC



solenoid decreases oil pressure by opening up the solenoid exhaust port. The TCC PC solenoid power is supplied by the TCM through a high side



driver (HSD). The HSD protects the circuit and components from excessive current flow. If excessive current flow is detected, the HSD will turn



OFF. When the fault is corrected, the HSD will reset.



Conditions for Running the DTC



P2762



* DTC P2762 has not set this ignition cycle.



* The engine speed is 500 RPM or greater for 5 seconds.



* The ignition voltage is 8.6 volts or greater.



* Transmission fluid temperature is 140掳C (284掳F) or greater.



P2763



* DTCs P2763, P2764, P0658, or P0659 have not set this ignition cycle.



* The engine speed is 500 RPM or greater for 5 seconds.



* The ignition voltage is 8.6 volts or greater.

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