2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 870

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 870

The solenoid relay, located within the electronic brake control module (EBCM), supplies battery voltage to all of the valve solenoids.

Conditions for Running the DTC

* Ignition voltage is greater than 9.5 volts.

* The solenoid relay is commanded ON.

Conditions for Setting the DTC

One or more of the following conditions exists:

* The EBCM detects an open in the battery positive voltage circuit to the solenoid valve relay.

* The EBCM detects a stuck open solenoid valve relay or an open circuit between the solenoid valve relay and solenoid valves.

Action Taken When the DTC Sets

* The EBCM disables the antilock brake system (ABS), traction control system, and the dynamic rear proportion for the duration of the

ignition cycle.

* The ABS indicator turns ON.

* The Traction Control indicator turns ON.

* The red Brake Warning indicator turns ON.

* The driver information center displays the SERVICE BRAKE SYSTEM/TRACTION SYSTEM message.

Conditions for Clearing the DTC

* The condition for setting the DTC is no longer present.

* The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Reference Information

Schematic Reference

Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation/ABS

Description and Operation)

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 Verification

Ignition ON, observe the scan tool EBCM Battery Voltage Signal parameter. The reading should be battery voltage.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the EBCM.

2. Test for less than 1 ohm between the ground circuits listed below and ground.

* Terminal 1

* Terminal 25

瀚慖f greater than the specified range, test the ground circuits for an open/high resistance.

3. Ignition ON, verify that a test lamp illuminates between the B+ circuits listed below and ground.