2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 884
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 Testing
1. Verify DTC C0455 is not set.
瀚慖f DTC is set, refer to DTC C0455 (See: C Code Charts/C0455).
2. Verify DTC C0277 is not set.
瀚慖f DTC is set, refer to DTC C0277, C120C, C129A, C129B, C129D, C129E, C12B1, or C12F8 (See: C Code Charts/C0277/Antilock
Brake System - Hybrid (HP2)).
3. Ignition OFF, disconnect the harness connector at the electronic brake control position sensor.
4. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 2 and ground.
瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the EBCM.
瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for EBCM replacement, programming and setup
C12E6
DTC C0256, C12E6, or C12E7
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 C0256 04
- Valve Relay Contact Circuit Open
DTC C12E6
- Valve Relay Contact Circuit Open
DTC C0256 0E
- Valve Relay Contact Circuit Resistance Below Threshold
