2010 Cadillac CTS Sedan AWD V6-3.0L Page 1635
attached to the lower control valve body. The solenoid operates by the TCM opening or closing the ground circuit. With the solenoid circuit
grounded (solenoid on), the internal plunger and metering ball block the exhaust fluid creating signal fluid pressure. The signal fluid acts against
the clutch select valve 2 to overcome the valve spring force moving it to the apply position, allowing the shift. The TCM shifts the transmission by
operating the solenoids in on/off combinations.
Conditions for Running the DTC
P0751 or P0752
* DTCs P0121, P0122, P0123, P0716, P0717, P0722, P0723, and P0182E are not set.
* Ignition voltage is 8.6 V or greater.
* The engine speed is 500 RPM or greater for 5 seconds.
* The IMS range is not PARK, NEUTRAL or REVERSE.
* High Side Driver (HSD) is enabled.
* The transmission fluid temperature is 0-130掳C (32-266掳F).
* Accelerator pedal position signal is valid.
* The throttle position signal is valid.
* The output shaft speed is 0 RPM or greater.
* The TCM must receive a valid torque signal from the ECM.
Conditions for Setting the DTC
P0751
* Commanded gear slip is 200 RPM for 1.1 seconds.
* First gear locked is commanded.
* The closest gear ratio is 4th gear.
P0752
* Gear slip is 200 RPM or greater for 5 seconds.
* Commanded gear is 3rd.
* Transmission has achieved second gear.
Action Taken When the DTC Sets
* DTC P0751 is a Type B DTC.
* DTC P0752 is a Type A DTC.
Conditions for Clearing the DTC
* DTC P0751 is a Type B DTC.
* DTC P0752 is a Type A DTC.
Diagnostic Aids
Before performing a road test, configure and setup the scan tool for snapshot mode. This will allow you to display, monitor, and verify multiple
transmission data parameters at one time, after the road test.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams)
Description and Operation
* Electronic Component Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and
Operation/Electronic Component Description)
* Transmission General Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and
Operation/Transmission General Description)
* Transmission Component and System Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and
Operation/Transmission Component and System Description)
* Park - Engine Running (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Park - Engine
Running)
* Reverse (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Reverse)
* Neutral - Engine Running (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Neutral -
Engine Running)
* Drive Range, First Gear Engine Braking (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and
Operation/Drive Range/First Gear Engine Braking)
* Drive Range, First Gear (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Drive Range/First
Gear)
* Drive Range, Second Gear (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Drive
Range/Second Gear)
* Drive Range, Third Gear (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/Drive
