2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2727
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Control Solenoid Valve and Transmission Control Module Assembly Inspection (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/2ML70 - Automatic Transmission/Control
Solenoid Valve and Transmission Control Module Assembly Inspection) for control solenoid inspection.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for control solenoid valve assembly replacement,
setup, and programming.
6L50/6L80/6L90 - Automatic Transmission
DTC P0965-P0967
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provides an overview of each diagnostic category.
DTC Descriptors
DTC P0965
- Clutch Pressure Control (PC) Solenoid 2 System Performance
DTC P0966
- Clutch Pressure Control (PC) Solenoid 2 Control Circuit Low Voltage
DTC P0967
- Clutch Pressure Control (PC) Solenoid 2 Control Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
Circuit/System Description
The clutch pressure (PC) solenoid 2 is part of the control solenoid valve assembly which has no serviceable parts. The normally high clutch PC
solenoid 2 regulates and directs the clutch PC solenoid 2 oil pressure to the 3-5 reverse clutch regulator valve and 3-5 reverse clutch boost valve.
Increasing clutch PC solenoid 2 pressure increases pressure to the 3-5 reverse clutch. The TCM varies the current to the PC solenoid 2 through a
low side driver. Decreasing the current to the clutch PC solenoid 2 increases clutch PC solenoid 2 oil pressure by closing OFF the solenoid exhaust
port. Increasing the current to the clutch PC solenoid 2, decreases clutch PC solenoid 2 oil pressure by opening the solenoid exhaust port. Clutch
PC solenoid 2 power is supplied by the TCM through a high side driver (HSD). The HSD protects the circuit and components from excessive
current flow. If excessive current flow is detected, the HSD will turn OFF. When the fault is corrected, the HSD will reset.
Conditions for Running the DTC
P0965, P0966, or P0967
* DTCs P0965, P0966, or P0967 have not set this ignition.
* The ignition voltage is 8.6 volts or greater.
Sunday, March 1, 2020
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2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 906
2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 906
C1233
DTC C1207-C1210, C1221-C1228, or C1232-C1235
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
DTC Descriptor
DTC C1207 00
- Left Front Wheel Speed Sensor Circuit High Input Malfunction
DTC C1208 00
- Right Front Wheel Speed Sensor Circuit High Input Malfunction
DTC C1209 00
- Left Rear Wheel Speed Sensor Circuit High Input Malfunction
DTC C1210 00
- Right Rear Wheel Speed Sensor Circuit High Input Malfunction
DTC C1221 00
- Left Front Wheel Speed Sensor Circuit Malfunction
DTC C1222 00
- Right Front Wheel Speed Sensor Circuit Malfunction
DTC C1223 00
- Left Rear Wheel Speed Sensor Circuit Malfunction
DTC C1224 00
- Right Rear Wheel Speed Sensor Circuit Malfunction
DTC C1225 00
- Left Front Wheel Speed Sensor Circuit Performance Malfunction
DTC C1226 00
- Right Front Wheel Speed Sensor Circuit Performance Malfunction
DTC C1227 00
- Left Rear Wheel Speed Sensor Circuit Performance Malfunction
DTC C1228 00
- Right Rear Wheel Speed Sensor Circuit Performance Malfunction
DTC C1232 00
- Left Front Wheel Speed Sensor Circuit Low Input Malfunction
DTC C1233 00
- Right Front Wheel Speed Sensor Circuit Low Input Malfunction
DTC C1234 00
- Left Rear Wheel Speed Sensor Circuit Low Input Malfunction
DTC C1235 00
- Right Rear Wheel Speed Sensor Circuit Low Input Malfunction
Circuit/System Description
The wheel speeds are detected by active wheel speed sensors. Each wheel speed sensor receives a 12 V reference voltage from the electronic brake
control module (EBCM) and provides an alternating current square wave signal to the EBCM. As the wheel spins, the EBCM uses the frequency of
the square wave signal to calculate the wheel speed. The EBCM sends the wheel speed information as a high speed controller area network (CAN)
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2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2726
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2726
milliseconds.
P0963
The transmission control module detects an internal high voltage electrical malfunction of the line pressure control solenoid control circuit for 300
milliseconds.
Action Taken When the DTC Sets
DTC P0961
* DTC P0961 is a Type B DTC.
* The transmission control module freezes transmission adaptive functions.
DTC P0962
* DTC P0962 is a Type A DTC.
* The transmission control module defaults the transmission to 3rd gear.
* The transmission control module commands maximum line pressure.
* The transmission control module freezes transmission adaptive functions.
DTC P0963
* DTC P0963 is a Type A DTC.
* The transmission control module freezes transmission adaptive functions.
Conditions for Clearing the DTC
* DTC P0961 is a Type B DTC.
* DTCs P0962 and P0963 are Type A DTCs.
Diagnostic Aids
When attempting to set solenoid electrical DTCs, ensure the transmission control module is warmed up and the transmission is operated long
enough to ensure a 3掳C (5掳F) increase in transmission control module temperature. This will place the transmission control module 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)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information.
Circuit/System Verification
1. Engine ON, verify the transmission fluid temperature is between 50-80掳C (122-176掳F).
2. Operate the vehicle long enough to verify at least a 3掳C (5掳F) rise in TCM temperature parameter, then operate the vehicle in Park for 5
seconds.
3. Engine ON, observe the scan tool Line PC Sol. CKT Status parameter. The reading should display OK or Indeterminate.
瀚慖f the reading is not within the specified range, replace the control solenoid valve assembly.
milliseconds.
P0963
The transmission control module detects an internal high voltage electrical malfunction of the line pressure control solenoid control circuit for 300
milliseconds.
Action Taken When the DTC Sets
DTC P0961
* DTC P0961 is a Type B DTC.
* The transmission control module freezes transmission adaptive functions.
DTC P0962
* DTC P0962 is a Type A DTC.
* The transmission control module defaults the transmission to 3rd gear.
* The transmission control module commands maximum line pressure.
* The transmission control module freezes transmission adaptive functions.
DTC P0963
* DTC P0963 is a Type A DTC.
* The transmission control module freezes transmission adaptive functions.
Conditions for Clearing the DTC
* DTC P0961 is a Type B DTC.
* DTCs P0962 and P0963 are Type A DTCs.
Diagnostic Aids
When attempting to set solenoid electrical DTCs, ensure the transmission control module is warmed up and the transmission is operated long
enough to ensure a 3掳C (5掳F) increase in transmission control module temperature. This will place the transmission control module 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)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
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)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code
(DTC) Type Definitions)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information.
Circuit/System Verification
1. Engine ON, verify the transmission fluid temperature is between 50-80掳C (122-176掳F).
2. Operate the vehicle long enough to verify at least a 3掳C (5掳F) rise in TCM temperature parameter, then operate the vehicle in Park for 5
seconds.
3. Engine ON, observe the scan tool Line PC Sol. CKT Status parameter. The reading should display OK or Indeterminate.
瀚慖f the reading is not within the specified range, replace the control solenoid valve assembly.
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