2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1951
* SLC3 current is not changed.
P2720
* The ignition voltage is between 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 P2721 is not set.
P2721
* The ignition voltage is between 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 P2720 is not set.
Conditions for Setting the DTC
P2716
Deviation between commanded current and feedback current
P2719
The TCM detects the error current more than 80 mA for 2.75 ms.
P2720
The TCM detects at least 5 times less than 23 mA current consumption of the SLC3 control circuit for 100 ms.
P2721
The TCM detects at least 5 times more than 1.333 A current consumption of the SLC3 control circuit for 100 ms.
Action Taken When the DTC Sets
P2716, P2719
* DTCs P2716 and P2719 are Type B DTCs.
* The TCM turns OFF all solenoids.
* The TCM allows the vehicle to operate only in the second gear and "R" range after a stop.
P2720, P2721
* DTCs P2720 and P2721 are Type B DTCs.
* No self learning function
* The TCM turns OFF all solenoids.
* The TCM allows the vehicle after a stop to operate only in the second gear and "R" range.
Conditions for Clearing the DTC
P2716, P2719
* DTCs P2716 and P2719 are Type B DTCs.
* The TCM detects the error current less than 50 mA for 2.75 ms.
P2720, P2721
* DTCs P2720 and P2721 are Type B DTCs.
* The current consumption of the SLC3 control circuit is 0.1-1.1 A for 500 ms.
Diagnostic Aids
When attempting to set solenoid electrical DTCs, ensure the TCM is warmed up and the transmission is operated in 2nd gear long enough to ensure
a 3掳C (5掳F) increase in TCM substrate temperature. This will place the TCM under the optimal conditions to test solenoid electrical DTCs.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams/Electrical
Diagrams)
Connector End View Reference
