Showing posts with label * The transmission line pressure is greater than 370 kPa (54 psi) and not fluctuating by greater than 30 kPa (4 psi).. Show all posts
Showing posts with label * The transmission line pressure is greater than 370 kPa (54 psi) and not fluctuating by greater than 30 kPa (4 psi).. Show all posts

Monday, November 23, 2020

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2314

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2314

* The transmission line pressure is greater than 370 kPa (54 psi) and not fluctuating by greater than 30 kPa (4 psi).

* Propulsion is active.

P0796

The clutch pressure control solenoid 3 commanded pressure is greater than 1800 kPa (261 psi) for 4.5 seconds.

P0797

The clutch pressure control solenoid 3 commanded pressure is less than 5 kPa (1 psi) for 4.5 seconds.

Conditions for Setting the DTC

P0796 - Fail Case 1

The clutch pressure control solenoid 3 commanded pressure is 1800 kPa (261 psi) and the TFP switch 1 state is Low for 30 seconds.

P0766 - Fail Case 2

The clutch pressure control solenoid 3 commanded pressure is 1800 kPa (261 psi) and the TFP switch 1 state is Low for 0.5 seconds greater than 5

times during a key cycle.

P0797 - Fail Case 1

The clutch pressure control solenoid 3 commanded pressure is 5 kPa (1 psi) and the TFP switch 1 state is High for 36 seconds.

P0797 - Fail Case 2

The clutch pressure control solenoid 3 commanded pressure is 5 kPa (1 psi) and the TFP switch 1 state is High for 1.25 seconds greater than 5 times

during a key cycle.

Action Taken When the DTC Sets

* P0796 and P0797 are Type B DTCs.

* The transmission control module commands maximum line pressure.

* The transmission control module freezes transmission adaptive functions.

Conditions for Clearing the DTC

P0796 and P0797 are Type B DTCs.

Diagnostic Aids

When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure

conditions.

Circuit/System Verification

1. Verify that DTCs P0721, P0722, P0723, P0966, P0967, P0969, P0970, P0971, P0973, P0974, P0976, P0977, P2720, P2721, P2728, P2729,

or P2730 are not set.

瀚慖f any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

2. Perform the Line Pressure Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component

Tests and General Diagnostics/2ML70 - Automatic Transmission/Line Pressure Check).

3. Perform the 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).

4. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test (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 Solenoid Performance Test).

5. Inspect the control valve lower body assembly for sticking valves, damage, scored bores, or debris.

瀚慖f a concern if found in the valve body, repair or replace the valve body as necessary.

6. Inspect the hybrid low, 1-2 clutch assembly for damage.

瀚慖f a concern is found in the hybrid low, 1-2 clutch, repair or replace as necessary.

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2309

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2309

* The transmission line pressure is greater than 370 kPa (54 psi) and not fluctuating by greater than 30 kPa (4 psi).

* Propulsion is active.

P0796

The clutch pressure control solenoid 3 commanded pressure is greater than 1800 kPa (261 psi) for 4.5 seconds.

P0797

The clutch pressure control solenoid 3 commanded pressure is less than 5 kPa (1 psi) for 4.5 seconds.

Conditions for Setting the DTC

P0796 - Fail Case 1

The clutch pressure control solenoid 3 commanded pressure is 1800 kPa (261 psi) and the TFP switch 1 state is Low for 30 seconds.

P0766 - Fail Case 2

The clutch pressure control solenoid 3 commanded pressure is 1800 kPa (261 psi) and the TFP switch 1 state is Low for 0.5 seconds greater than 5

times during a key cycle.

P0797 - Fail Case 1

The clutch pressure control solenoid 3 commanded pressure is 5 kPa (1 psi) and the TFP switch 1 state is High for 36 seconds.

P0797 - Fail Case 2

The clutch pressure control solenoid 3 commanded pressure is 5 kPa (1 psi) and the TFP switch 1 state is High for 1.25 seconds greater than 5 times

during a key cycle.

Action Taken When the DTC Sets

* P0796 and P0797 are Type B DTCs.

* The transmission control module commands maximum line pressure.

* The transmission control module freezes transmission adaptive functions.

Conditions for Clearing the DTC

P0796 and P0797 are Type B DTCs.

Diagnostic Aids

When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure

conditions.

Circuit/System Verification

1. Verify that DTCs P0721, P0722, P0723, P0966, P0967, P0969, P0970, P0971, P0973, P0974, P0976, P0977, P2720, P2721, P2728, P2729,

or P2730 are not set.

瀚慖f any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

2. Perform the Line Pressure Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component

Tests and General Diagnostics/2ML70 - Automatic Transmission/Line Pressure Check).

3. Perform the 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).

4. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test (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 Solenoid Performance Test).

5. Inspect the control valve lower body assembly for sticking valves, damage, scored bores, or debris.

瀚慖f a concern if found in the valve body, repair or replace the valve body as necessary.

6. Inspect the hybrid low, 1-2 clutch assembly for damage.

瀚慖f a concern is found in the hybrid low, 1-2 clutch, repair or replace as necessary.

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2303

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2303

* The transmission line pressure is greater than 370 kPa (54 psi) and not fluctuating by greater than 30 kPa (4 psi).

* Propulsion is active.

P0776

The clutch pressure control solenoid 2 commanded pressure is greater than 1800 kPa (261 psi) for 4.5 seconds.

P0777

The clutch pressure control solenoid 2 commanded pressure is less than 5 kPa (1 psi) for 4.5 seconds.

Conditions for Setting the DTC

P0776 - Fail Case 1

The clutch pressure control solenoid 2 commanded pressure is 1800 kPa (261 psi) and the transmission fluid pressure switch 3 state is Low for 30

seconds.

P0776 - Fail Case 2

The clutch pressure control solenoid 2 commanded pressure is 1800 kPa (261 psi) and the transmission fluid pressure switch 3 state is Low for 0.5

seconds greater than 5 times during a key cycle.

P0777 - Fail Case 1

The clutch pressure control solenoid 2 commanded pressure is 5 kPa (1 psi) and the transmission fluid pressure switch 3 state is High for 36

seconds.

P0777 - Fail Case 2

The clutch pressure control solenoid 2 commanded pressure is 5 kPa (1 psi) and the transmission fluid pressure switch 3 state is High for 1.25

seconds greater than 5 times during a key cycle.

Action Taken When the DTC Sets

* P0776 and P0777 are Type B DTCs.

* The transmission control module commands maximum line pressure.

* The transmission control module freezes transmission adaptive functions.

Conditions for Clearing the DTC

P0776 and P0777 are Type B DTCs.

Diagnostic Aids

When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure

conditions. With a scan tool, monitor the PC Sol. 2 Pressure Command and the TFP Switch 3 state parameters. Operate the vehicle in drive to

obtain 72 km/h (45 mph) for at least 10 seconds, stop the vehicle, turn the ignition Off for at least 30 seconds. Perform this operation 2 times. When

the PC Sol. 2 Pressure Command is Yes, the transmission fluid pressure switch 3 state should be high. When the PC Sol. 2 Pressure Command is

No, the TFP switch 3 state should be Low.

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)

Sunday, November 22, 2020

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2297

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2297

* The transmission line pressure is greater than 370 kPa (54 psi) and not fluctuating by greater than 30 kPa (4 psi).

* Propulsion is active.

P0776

The clutch pressure control solenoid 2 commanded pressure is greater than 1800 kPa (261 psi) for 4.5 seconds.

P0777

The clutch pressure control solenoid 2 commanded pressure is less than 5 kPa (1 psi) for 4.5 seconds.

Conditions for Setting the DTC

P0776 - Fail Case 1

The clutch pressure control solenoid 2 commanded pressure is 1800 kPa (261 psi) and the transmission fluid pressure switch 3 state is Low for 30

seconds.

P0776 - Fail Case 2

The clutch pressure control solenoid 2 commanded pressure is 1800 kPa (261 psi) and the transmission fluid pressure switch 3 state is Low for 0.5

seconds greater than 5 times during a key cycle.

P0777 - Fail Case 1

The clutch pressure control solenoid 2 commanded pressure is 5 kPa (1 psi) and the transmission fluid pressure switch 3 state is High for 36

seconds.

P0777 - Fail Case 2

The clutch pressure control solenoid 2 commanded pressure is 5 kPa (1 psi) and the transmission fluid pressure switch 3 state is High for 1.25

seconds greater than 5 times during a key cycle.

Action Taken When the DTC Sets

* P0776 and P0777 are Type B DTCs.

* The transmission control module commands maximum line pressure.

* The transmission control module freezes transmission adaptive functions.

Conditions for Clearing the DTC

P0776 and P0777 are Type B DTCs.

Diagnostic Aids

When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure

conditions. With a scan tool, monitor the PC Sol. 2 Pressure Command and the TFP Switch 3 state parameters. Operate the vehicle in drive to

obtain 72 km/h (45 mph) for at least 10 seconds, stop the vehicle, turn the ignition Off for at least 30 seconds. Perform this operation 2 times. When

the PC Sol. 2 Pressure Command is Yes, the transmission fluid pressure switch 3 state should be high. When the PC Sol. 2 Pressure Command is

No, the TFP switch 3 state should be Low.

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)

Friday, February 28, 2020

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2679

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2679

* The transmission line pressure is greater than 370 kPa (54 psi) and not fluctuating by greater than 30 kPa (4 psi).

* Propulsion is active.

P0796

The clutch pressure control solenoid 3 commanded pressure is greater than 1800 kPa (261 psi) for 4.5 seconds.

P0797

The clutch pressure control solenoid 3 commanded pressure is less than 5 kPa (1 psi) for 4.5 seconds.

Conditions for Setting the DTC

P0796 - Fail Case 1

The clutch pressure control solenoid 3 commanded pressure is 1800 kPa (261 psi) and the TFP switch 1 state is Low for 30 seconds.

P0766 - Fail Case 2

The clutch pressure control solenoid 3 commanded pressure is 1800 kPa (261 psi) and the TFP switch 1 state is Low for 0.5 seconds greater than 5

times during a key cycle.

P0797 - Fail Case 1

The clutch pressure control solenoid 3 commanded pressure is 5 kPa (1 psi) and the TFP switch 1 state is High for 36 seconds.

P0797 - Fail Case 2

The clutch pressure control solenoid 3 commanded pressure is 5 kPa (1 psi) and the TFP switch 1 state is High for 1.25 seconds greater than 5 times

during a key cycle.

Action Taken When the DTC Sets

* P0796 and P0797 are Type B DTCs.

* The transmission control module commands maximum line pressure.

* The transmission control module freezes transmission adaptive functions.

Conditions for Clearing the DTC

P0796 and P0797 are Type B DTCs.

Diagnostic Aids

When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure

conditions.

Circuit/System Verification

1. Verify that DTCs P0721, P0722, P0723, P0966, P0967, P0969, P0970, P0971, P0973, P0974, P0976, P0977, P2720, P2721, P2728, P2729,

or P2730 are not set.

瀚慖f any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

2. Perform the Line Pressure Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component

Tests and General Diagnostics/2ML70 - Automatic Transmission/Line Pressure Check).

3. Perform the 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).

4. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test (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 Solenoid Performance Test).

5. Inspect the control valve lower body assembly for sticking valves, damage, scored bores, or debris.

瀚慖f a concern if found in the valve body, repair or replace the valve body as necessary.

6. Inspect the hybrid low, 1-2 clutch assembly for damage.

瀚慖f a concern is found in the hybrid low, 1-2 clutch, repair or replace as necessary.

Thursday, February 27, 2020

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2674

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2674

* The transmission line pressure is greater than 370 kPa (54 psi) and not fluctuating by greater than 30 kPa (4 psi).

* Propulsion is active.

P0796

The clutch pressure control solenoid 3 commanded pressure is greater than 1800 kPa (261 psi) for 4.5 seconds.

P0797

The clutch pressure control solenoid 3 commanded pressure is less than 5 kPa (1 psi) for 4.5 seconds.

Conditions for Setting the DTC

P0796 - Fail Case 1

The clutch pressure control solenoid 3 commanded pressure is 1800 kPa (261 psi) and the TFP switch 1 state is Low for 30 seconds.

P0766 - Fail Case 2

The clutch pressure control solenoid 3 commanded pressure is 1800 kPa (261 psi) and the TFP switch 1 state is Low for 0.5 seconds greater than 5

times during a key cycle.

P0797 - Fail Case 1

The clutch pressure control solenoid 3 commanded pressure is 5 kPa (1 psi) and the TFP switch 1 state is High for 36 seconds.

P0797 - Fail Case 2

The clutch pressure control solenoid 3 commanded pressure is 5 kPa (1 psi) and the TFP switch 1 state is High for 1.25 seconds greater than 5 times

during a key cycle.

Action Taken When the DTC Sets

* P0796 and P0797 are Type B DTCs.

* The transmission control module commands maximum line pressure.

* The transmission control module freezes transmission adaptive functions.

Conditions for Clearing the DTC

P0796 and P0797 are Type B DTCs.

Diagnostic Aids

When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure

conditions.

Circuit/System Verification

1. Verify that DTCs P0721, P0722, P0723, P0966, P0967, P0969, P0970, P0971, P0973, P0974, P0976, P0977, P2720, P2721, P2728, P2729,

or P2730 are not set.

瀚慖f any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

2. Perform the Line Pressure Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component

Tests and General Diagnostics/2ML70 - Automatic Transmission/Line Pressure Check).

3. Perform the 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).

4. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test (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 Solenoid Performance Test).

5. Inspect the control valve lower body assembly for sticking valves, damage, scored bores, or debris.

瀚慖f a concern if found in the valve body, repair or replace the valve body as necessary.

6. Inspect the hybrid low, 1-2 clutch assembly for damage.

瀚慖f a concern is found in the hybrid low, 1-2 clutch, repair or replace as necessary.

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2668

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2668

* The transmission line pressure is greater than 370 kPa (54 psi) and not fluctuating by greater than 30 kPa (4 psi).

* Propulsion is active.

P0776

The clutch pressure control solenoid 2 commanded pressure is greater than 1800 kPa (261 psi) for 4.5 seconds.

P0777

The clutch pressure control solenoid 2 commanded pressure is less than 5 kPa (1 psi) for 4.5 seconds.

Conditions for Setting the DTC

P0776 - Fail Case 1

The clutch pressure control solenoid 2 commanded pressure is 1800 kPa (261 psi) and the transmission fluid pressure switch 3 state is Low for 30

seconds.

P0776 - Fail Case 2

The clutch pressure control solenoid 2 commanded pressure is 1800 kPa (261 psi) and the transmission fluid pressure switch 3 state is Low for 0.5

seconds greater than 5 times during a key cycle.

P0777 - Fail Case 1

The clutch pressure control solenoid 2 commanded pressure is 5 kPa (1 psi) and the transmission fluid pressure switch 3 state is High for 36

seconds.

P0777 - Fail Case 2

The clutch pressure control solenoid 2 commanded pressure is 5 kPa (1 psi) and the transmission fluid pressure switch 3 state is High for 1.25

seconds greater than 5 times during a key cycle.

Action Taken When the DTC Sets

* P0776 and P0777 are Type B DTCs.

* The transmission control module commands maximum line pressure.

* The transmission control module freezes transmission adaptive functions.

Conditions for Clearing the DTC

P0776 and P0777 are Type B DTCs.

Diagnostic Aids

When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure

conditions. With a scan tool, monitor the PC Sol. 2 Pressure Command and the TFP Switch 3 state parameters. Operate the vehicle in drive to

obtain 72 km/h (45 mph) for at least 10 seconds, stop the vehicle, turn the ignition Off for at least 30 seconds. Perform this operation 2 times. When

the PC Sol. 2 Pressure Command is Yes, the transmission fluid pressure switch 3 state should be high. When the PC Sol. 2 Pressure Command is

No, the TFP switch 3 state should be Low.

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)

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2662

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2662

* The transmission line pressure is greater than 370 kPa (54 psi) and not fluctuating by greater than 30 kPa (4 psi).

* Propulsion is active.

P0776

The clutch pressure control solenoid 2 commanded pressure is greater than 1800 kPa (261 psi) for 4.5 seconds.

P0777

The clutch pressure control solenoid 2 commanded pressure is less than 5 kPa (1 psi) for 4.5 seconds.

Conditions for Setting the DTC

P0776 - Fail Case 1

The clutch pressure control solenoid 2 commanded pressure is 1800 kPa (261 psi) and the transmission fluid pressure switch 3 state is Low for 30

seconds.

P0776 - Fail Case 2

The clutch pressure control solenoid 2 commanded pressure is 1800 kPa (261 psi) and the transmission fluid pressure switch 3 state is Low for 0.5

seconds greater than 5 times during a key cycle.

P0777 - Fail Case 1

The clutch pressure control solenoid 2 commanded pressure is 5 kPa (1 psi) and the transmission fluid pressure switch 3 state is High for 36

seconds.

P0777 - Fail Case 2

The clutch pressure control solenoid 2 commanded pressure is 5 kPa (1 psi) and the transmission fluid pressure switch 3 state is High for 1.25

seconds greater than 5 times during a key cycle.

Action Taken When the DTC Sets

* P0776 and P0777 are Type B DTCs.

* The transmission control module commands maximum line pressure.

* The transmission control module freezes transmission adaptive functions.

Conditions for Clearing the DTC

P0776 and P0777 are Type B DTCs.

Diagnostic Aids

When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure

conditions. With a scan tool, monitor the PC Sol. 2 Pressure Command and the TFP Switch 3 state parameters. Operate the vehicle in drive to

obtain 72 km/h (45 mph) for at least 10 seconds, stop the vehicle, turn the ignition Off for at least 30 seconds. Perform this operation 2 times. When

the PC Sol. 2 Pressure Command is Yes, the transmission fluid pressure switch 3 state should be high. When the PC Sol. 2 Pressure Command is

No, the TFP switch 3 state should be Low.

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)

Saturday, December 21, 2019

2010 Cadillac Truck Escalade AWD V8-6.2L Page 2419

* The transmission line pressure is greater than 370 kPa (54 psi) and not fluctuating by greater than 30 kPa (4 psi).

* Propulsion is active.

P0796

The clutch pressure control solenoid 3 commanded pressure is greater than 1800 kPa (261 psi) for 4.5 seconds.

P0797

The clutch pressure control solenoid 3 commanded pressure is less than 5 kPa (1 psi) for 4.5 seconds.

Conditions for Setting the DTC

P0796 - Fail Case 1

The clutch pressure control solenoid 3 commanded pressure is 1800 kPa (261 psi) and the TFP switch 1 state is Low for 30 seconds.

P0766 - Fail Case 2

The clutch pressure control solenoid 3 commanded pressure is 1800 kPa (261 psi) and the TFP switch 1 state is Low for 0.5 seconds greater than 5

times during a key cycle.

P0797 - Fail Case 1

The clutch pressure control solenoid 3 commanded pressure is 5 kPa (1 psi) and the TFP switch 1 state is High for 36 seconds.

P0797 - Fail Case 2

The clutch pressure control solenoid 3 commanded pressure is 5 kPa (1 psi) and the TFP switch 1 state is High for 1.25 seconds greater than 5 times

during a key cycle.

Action Taken When the DTC Sets

* P0796 and P0797 are Type B DTCs.

* The transmission control module commands maximum line pressure.

* The transmission control module freezes transmission adaptive functions.

Conditions for Clearing the DTC

P0796 and P0797 are Type B DTCs.

Diagnostic Aids

When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure

conditions.

Circuit/System Verification

1. Verify that DTCs P0721, P0722, P0723, P0966, P0967, P0969, P0970, P0971, P0973, P0974, P0976, P0977, P2720, P2721, P2728, P2729,

or P2730 are not set.

锟斤拷If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

2. Perform the Line Pressure Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component

Tests and General Diagnostics/2ML70 - Automatic Transmission/Line Pressure Check).

3. Perform the 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).

4. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test (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 Solenoid Performance Test).

5. Inspect the control valve lower body assembly for sticking valves, damage, scored bores, or debris.

锟斤拷If a concern if found in the valve body, repair or replace the valve body as necessary.

6. Inspect the hybrid low, 1-2 clutch assembly for damage.

锟斤拷If a concern is found in the hybrid low, 1-2 clutch, repair or replace as necessary.

2010 Cadillac Truck Escalade AWD V8-6.2L Page 2414

* The transmission line pressure is greater than 370 kPa (54 psi) and not fluctuating by greater than 30 kPa (4 psi).

* Propulsion is active.

P0796

The clutch pressure control solenoid 3 commanded pressure is greater than 1800 kPa (261 psi) for 4.5 seconds.

P0797

The clutch pressure control solenoid 3 commanded pressure is less than 5 kPa (1 psi) for 4.5 seconds.

Conditions for Setting the DTC

P0796 - Fail Case 1

The clutch pressure control solenoid 3 commanded pressure is 1800 kPa (261 psi) and the TFP switch 1 state is Low for 30 seconds.

P0766 - Fail Case 2

The clutch pressure control solenoid 3 commanded pressure is 1800 kPa (261 psi) and the TFP switch 1 state is Low for 0.5 seconds greater than 5

times during a key cycle.

P0797 - Fail Case 1

The clutch pressure control solenoid 3 commanded pressure is 5 kPa (1 psi) and the TFP switch 1 state is High for 36 seconds.

P0797 - Fail Case 2

The clutch pressure control solenoid 3 commanded pressure is 5 kPa (1 psi) and the TFP switch 1 state is High for 1.25 seconds greater than 5 times

during a key cycle.

Action Taken When the DTC Sets

* P0796 and P0797 are Type B DTCs.

* The transmission control module commands maximum line pressure.

* The transmission control module freezes transmission adaptive functions.

Conditions for Clearing the DTC

P0796 and P0797 are Type B DTCs.

Diagnostic Aids

When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure

conditions.

Circuit/System Verification

1. Verify that DTCs P0721, P0722, P0723, P0966, P0967, P0969, P0970, P0971, P0973, P0974, P0976, P0977, P2720, P2721, P2728, P2729,

or P2730 are not set.

锟斤拷If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

2. Perform the Line Pressure Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component

Tests and General Diagnostics/2ML70 - Automatic Transmission/Line Pressure Check).

3. Perform the 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).

4. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test (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 Solenoid Performance Test).

5. Inspect the control valve lower body assembly for sticking valves, damage, scored bores, or debris.

锟斤拷If a concern if found in the valve body, repair or replace the valve body as necessary.

6. Inspect the hybrid low, 1-2 clutch assembly for damage.

锟斤拷If a concern is found in the hybrid low, 1-2 clutch, repair or replace as necessary.

2010 Cadillac Truck Escalade AWD V8-6.2L Page 2408

* The transmission line pressure is greater than 370 kPa (54 psi) and not fluctuating by greater than 30 kPa (4 psi).

* Propulsion is active.

P0776

The clutch pressure control solenoid 2 commanded pressure is greater than 1800 kPa (261 psi) for 4.5 seconds.

P0777

The clutch pressure control solenoid 2 commanded pressure is less than 5 kPa (1 psi) for 4.5 seconds.

Conditions for Setting the DTC

P0776 - Fail Case 1

The clutch pressure control solenoid 2 commanded pressure is 1800 kPa (261 psi) and the transmission fluid pressure switch 3 state is Low for 30

seconds.

P0776 - Fail Case 2

The clutch pressure control solenoid 2 commanded pressure is 1800 kPa (261 psi) and the transmission fluid pressure switch 3 state is Low for 0.5

seconds greater than 5 times during a key cycle.

P0777 - Fail Case 1

The clutch pressure control solenoid 2 commanded pressure is 5 kPa (1 psi) and the transmission fluid pressure switch 3 state is High for 36

seconds.

P0777 - Fail Case 2

The clutch pressure control solenoid 2 commanded pressure is 5 kPa (1 psi) and the transmission fluid pressure switch 3 state is High for 1.25

seconds greater than 5 times during a key cycle.

Action Taken When the DTC Sets

* P0776 and P0777 are Type B DTCs.

* The transmission control module commands maximum line pressure.

* The transmission control module freezes transmission adaptive functions.

Conditions for Clearing the DTC

P0776 and P0777 are Type B DTCs.

Diagnostic Aids

When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure

conditions. With a scan tool, monitor the PC Sol. 2 Pressure Command and the TFP Switch 3 state parameters. Operate the vehicle in drive to

obtain 72 km/h (45 mph) for at least 10 seconds, stop the vehicle, turn the ignition Off for at least 30 seconds. Perform this operation 2 times. When

the PC Sol. 2 Pressure Command is Yes, the transmission fluid pressure switch 3 state should be high. When the PC Sol. 2 Pressure Command is

No, the TFP switch 3 state should be Low.

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)

2010 Cadillac Truck Escalade AWD V8-6.2L Page 2402

* The transmission line pressure is greater than 370 kPa (54 psi) and not fluctuating by greater than 30 kPa (4 psi).

* Propulsion is active.

P0776

The clutch pressure control solenoid 2 commanded pressure is greater than 1800 kPa (261 psi) for 4.5 seconds.

P0777

The clutch pressure control solenoid 2 commanded pressure is less than 5 kPa (1 psi) for 4.5 seconds.

Conditions for Setting the DTC

P0776 - Fail Case 1

The clutch pressure control solenoid 2 commanded pressure is 1800 kPa (261 psi) and the transmission fluid pressure switch 3 state is Low for 30

seconds.

P0776 - Fail Case 2

The clutch pressure control solenoid 2 commanded pressure is 1800 kPa (261 psi) and the transmission fluid pressure switch 3 state is Low for 0.5

seconds greater than 5 times during a key cycle.

P0777 - Fail Case 1

The clutch pressure control solenoid 2 commanded pressure is 5 kPa (1 psi) and the transmission fluid pressure switch 3 state is High for 36

seconds.

P0777 - Fail Case 2

The clutch pressure control solenoid 2 commanded pressure is 5 kPa (1 psi) and the transmission fluid pressure switch 3 state is High for 1.25

seconds greater than 5 times during a key cycle.

Action Taken When the DTC Sets

* P0776 and P0777 are Type B DTCs.

* The transmission control module commands maximum line pressure.

* The transmission control module freezes transmission adaptive functions.

Conditions for Clearing the DTC

P0776 and P0777 are Type B DTCs.

Diagnostic Aids

When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure

conditions. With a scan tool, monitor the PC Sol. 2 Pressure Command and the TFP Switch 3 state parameters. Operate the vehicle in drive to

obtain 72 km/h (45 mph) for at least 10 seconds, stop the vehicle, turn the ignition Off for at least 30 seconds. Perform this operation 2 times. When

the PC Sol. 2 Pressure Command is Yes, the transmission fluid pressure switch 3 state should be high. When the PC Sol. 2 Pressure Command is

No, the TFP switch 3 state should be Low.

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)