2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2746
DTC Descriptor
DTC P0969
- Pressure Control (PC) Solenoid 3 System Performance
DTC P0970
- Pressure Control (PC) Solenoid 3 Control Circuit Low Voltage
DTC P0971
- Pressure Control (PC) Solenoid 3 Control Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The clutch pressure control solenoid 3 is part of the control solenoid valve assembly and is not serviced separately. The transmission control
module supplies 12 volts to the clutch pressure control solenoid 3 on the high side driver 1 circuit. The transmission control module controls the
clutch pressure control solenoid 3 through the clutch pressure control solenoid 3 control circuit. The normally high clutch pressure control solenoid
3 controls fluid to the hybrid low, 1-2 and the 4th clutch assemblies when commanded ON and exhausts fluid when commanded OFF. The clutch
pressure control solenoid 3 regulates the transmission fluid pressure to the hybrid low, 1-2 and the 4th clutch assemblies.
Conditions for Running the DTC
* The engine run time is greater than 5 seconds.
* The vehicle speed is less than 200 km/h (124 mph) for 5 seconds.
* The system voltage is 11-18 V.
Conditions for Setting the DTC
P0969
The transmission control module detects an internal electrical performance malfunction of the clutch pressure control solenoid control circuit when
the actual hybrid low, 1-2 and the 4th clutch pressure does not equal the commanded hybrid low, 1-2 and 4th clutch pressure for 300 milliseconds.
P0970
The transmission control module detects an internal low voltage electrical malfunction of the clutch PC solenoid control circuit for 500
milliseconds.
P0971
The transmission control module detects an internal high voltage electrical malfunction of the clutch PC solenoid control circuit for 500
milliseconds.
Action Taken When the DTC Sets
* DTC P0969 is a Type B DTC.
* DTCs P0970 and P0971 are Type A DTCs.
* The transmission control module defaults the transmission to a limited shift pattern utilizing 2 forward gears and reverse based on the default
detected.
* The transmission control module commands maximum line pressure.
* The transmission control module freezes transmission adaptive functions.
Conditions for Clearing the DTC
* DTC P0969 is a Type B DTC.
* DTCs P0970 and P0971 are Type A DTCs.
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