2010 Cadillac Truck SRX FWD V6-3.0L Page 2099
* DTC P2720 has not set this ignition cycle.
P2721
* The engine speed is greater than 400 RPM for 5 seconds.
* The ignition voltage is 8.6 volts or greater.
* DTC P2721 has not set this ignition cycle.
Conditions for Setting the DTC
P2719
The TCM detects an internal electrical malfunction on the clutch PC solenoid 4 control circuit where the measured PC solenoid 4 current does not
equal the commanded clutch PC solenoid 4 current for 5 seconds.
P2720
The TCM detects a short to ground on the clutch PC solenoid 4 control circuit for 1 second.
P2721
The TCM detects an open or short to voltage on the clutch PC solenoid 4 control circuit for 1 second.
Action Taken When the DTC Sets
P2719
* DTC P2719 is a Type C DTC.
* The TCM freezes transmission adaptive functions on the 2-6 clutch.
P2720
* DTC P2720 is a Type A DTC.
* The TCM commands maximum line pressure.
* The TCM freezes transmission adaptive functions.
* The TCM inhibits manual shifting of forward gears.
* The TCM limits the transmission to 2nd gear.
P2721
* DTC P2721 is a Type A DTC.
* The TCM commands maximum line pressure.
* The TCM freezes transmission adaptive functions.
* The TCM inhibits Tap Up/Down function.
* The TCM inhibits manual shifting of forward gears.
* The TCM limits the transmission to reverse, 1st, and 3rd gear.
Conditions for Clearing the DTC
* DTC P2719 is a Type C DTC.
* DTCs P2720 and P2721 are Type A DTCs.
Reference Information
Connector End View Reference
* Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
* Inline Harness Connector End Views (See: Diagrams/Connector Views/Multiple Junction Connector/Connector End Views By Number)
Description and Operation
Transmission General Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/6T70/6T75 -
Automatic Transmission/Transmission General Description)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
