2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 883

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 883

Brake Assist System Description and Operation (Vacuum Assist) (See: Brakes and Traction Control/Hydraulic System/Description and

Operation/Brake Assist System Description and Operation (Vacuum Assist))Brake Assist System Description and Operation (Hydraulic Assist) (

See: Brakes and Traction Control/Hydraulic System/Description and Operation/Brake Assist System Description and Operation (Hydraulic Assist))

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)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information

Circuit/System Testing

C0299 00

1. Ignition OFF, disconnect the harness connector from the power brake booster actuator.

2. Test for less than 25k ohm of resistance between the harness connector terminal 5 and ground.

瀚慖f greater than 25k ohm, test the ground circuit for an open/high resistance.

3. Connect a test lamp between the actuator harness connector terminal 1 and terminal 5.

4. Ignition ON, command the Active Brake Booster to ON and OFF with a scan tool.

瀚慖f the test lamp remains OFF during the commands, test for a short to ground or an open/high resistance on either control circuit. If the

circuits test normal, replace the electronic brake control module EBCM.

瀚慖f the test lamp is always ON, test the control circuits for a short to battery positive. If the circuit tests normal, locate and repair the source

of the vacuum leak.

5. If all circuits test normal, test or replace the vacuum brake booster assembly.

6. If all circuits test normal, and no vacuum leaks were found, replace the electronic brake control module (EBCM).

C0299 5A

Verify DTC C0299 5A is not set.

If the DTC is set, repair the source of the vacuum leak. Refer to Brake Assist System Diagnosis (See: Brakes and Traction Control/Hydraulic

System/Testing and Inspection/Component Tests and General Diagnostics/Brake Assist System Diagnosis).

Component Testing

C0299 00

1. Ignition OFF, disconnect the harness connector at the power brake booster actuator.

2. Test for infinite ohms of resistance between the actuator terminal 1 and ground.

瀚慖f less than infinite ohms, replace the vacuum brake booster assembly.

3. Test for 2-3 ohms of resistance between terminals 1 and 5 at the power brake booster actuator.

If the test is infinite resistance, replace the vacuum brake booster assembly.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Power Vacuum Brake Booster Replacement (See: Brakes and Traction Control/Power Brake Assist/Vacuum Brake Booster/Service and

Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning)for EBCM replacement, setup, and programming

MP 3010-NP0 - Transfer Case