2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1745
Circuit/System Description
Shift solenoid valve 2 is installed on the middle valve body. The solenoid turn ON and OFF in response to signals output from the TCM. According
to the ON or OFF status of shift solenoid valve 1 or shift solenoid valve 2, the 1st gear engine brake operates or the gear shifts into change. As a
fail-safe function, if any shift solenoid abnormality occurs, the transmission control module (TCM) will disable the current to the solenoids.
Conditions for Running the DTC
P0973
* 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.
* 10 ms after solenoid output changed.
P0974
* 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.
* 10 ms after solenoid output changed.
Conditions for Setting the DTC
P0973
The TCM detects an ON signal (12 V) of the 2 circuit when the 2 is commanded OFF (0 V) for 100 ms continuously after 5 times.
P0974
The TCM detects an OFF signal (0 V) of the 2 circuit when the 2 is commanded ON (12 V) for 100 ms continuously after 5 times.
Action Taken When the DTC Sets
* DTCs P0973 and P0974 are Type A DTCs.
* The TCM freezes transmission adaptive functions.
* The TCM turns OFF all solenoids.
* The TCM allows the vehicle to operate only in the second gear "R" range after a stop.
Conditions for Clearing the DTC
* DTCs P0973 and P0974 are Type A DTCs.
* The TCM detects an ON signal (12 V) of the Shift Solenoid Valve 2 circuit when the Shift Solenoid Valve 2 is commanded ON (12 V) for 1
s continuously.
* The TCM detects an OFF signal (0 V) of the Shift Solenoid Valve 2 circuit when the Shift Solenoid Valve 2 is commanded OFF (0 V) for 1 s
continuously.
Diagnostic Aids
When attempting to set solenoid electrical DTCs, ensure the control solenoid valve assembly is warmed up and the transmission is operated long
enough to ensure a 3掳C (5掳F) increase in temperature. This will place the TCM in 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
Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
