2010 Cadillac Truck SRX FWD V6-3.0L Page 2143
Circuit/System Description
Based on input speed and output speed signals, signals from the engine control module (engine speed and throttle opening) and vehicle speed,
smooth lock-up control and slip is performed through the lock-up control solenoid (SLU). The SLU is linearly turned ON and OFF. The lock-up
clutch inside the torque converter is operated, and the pump impeller and turbine runner are connected. Through this, the engine and the automatic
transmission are coupled and engine output is connected directly to the automatic transmission, eliminating transmission loss. By sliding the
lock-up clutch when lock-up is in the OFF range, extends the lock-up range to low vehicle speeds. It also suppresses a rise in engine speed and
increases transmission efficiency, improving fuel economy and at the same time, through the sliding of the lockup clutch, engine vibration can be
absorbed by the torque converter.
Conditions for Running the DTC
P2759
* The ignition voltage is 10.2-15.5 V.
* The engine speed is greater than 400 RPM for 2 s.
* The transmission is not in emergency mode.
* Driving in D range.
* Transmission Control Module (TCM) communication is normal.
* DTCs P2763 and P2764 are not set.
P2762
* The ignition voltage is 10.2-15.5 V.
* The engine speed is greater than 400 RPM for 2 s.
* The transmission is not in emergency mode.
* Driving in D range.
* TCM communication is normal.
* The Automatic Transmission Fluid Temperature is more than 20掳C (68掳F).
* SLU current is more than 0.85 A.
* SLU current is not changed.
P2763
* The ignition voltage is 10.2-15.5 V.
* The engine speed is greater than 400 RPM for 2 s.
* The transmission is not in emergency mode.
* Driving in D range.
* TCM communication is normal.
* DTC P2764 is not set.
P2764
* The ignition voltage is 10.2-15.5 V.
* The engine speed is greater than 400 RPM for 2 s.
* The transmission is not in emergency mode.
* Driving in D range.
* TCM communication is normal.
* DTC P2763 is not set.
Conditions for Setting the DTC
P2759
Deviation between commanded current and feedback current
P2762
The TCM detects the error current more than 80 mA for 2.75 ms.
P2763
The TCM detects at least 5 times less than 23 mA current consumption of the SLU control circuit for 100 ms.
