2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 783
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
1. Ignition ON, perform the following calibration procedures. Refer to:
* Steering Angle Sensor Centering (See: Sensors and Switches/Sensors and Switches - Steering and Suspension/Sensors and Switches -
Steering/Steering Angle Sensor/Service and Repair/Procedures)
* Vehicle Yaw Sensor Learn (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Yaw Rate Sensor/Testing
and Inspection/Vehicle Yaw Sensor Learn)
* Brake Pressure Modulator Valve Pressure Sensor Calibration (See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Hydraulic Control Assembly - Antilock Brakes/Testing and Inspection)
2. Verify that DTC C056D is not present.
瀚慖f DTC C056D is present, replace the module that set the DTC.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Steering Angle Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and Suspension/Sensors and Switches -
Steering/Steering Angle Sensor/Service and Repair/Removal and Replacement)
* Vehicle Yaw Sensor with Vehicle Lateral and Longitudinal Accelerometer Replacement (See: Brakes and Traction Control/Antilock Brakes
/ Traction Control Systems/Yaw Rate Sensor/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for module replacement, setup and programming
Antilock Brake System
DTC C056E
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 C056E 45
- Electronic Control Unit Software Variant Not Programmed
DTC C056E 4A
- Electronic Control Unit Software Programming Checksum Error
DTC C056E 5A
- Electronic Control Unit Software Not Plausible
Circuit/System Description
The electronic brake control module (EBCM) must be configured with the security code, CAN configuration data and vehicle options. If not
properly configured after installation, the EBCM may set a DTC.
The internal fault detection is handled inside the control module. No external circuits are involved.
Conditions for Running the DTC
