2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 2977
Conditions for Setting the DTC
A supervised periodic message that includes the transmitter module availability has not been received.
Action Taken When the DTC Sets
The modules is never signaled, therefore the specific subsystems will not function.
Conditions for Clearing the DTC
* A current DTC clears when the malfunction is no longer present.
* A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction.
Reference Information
Schematic Reference
* Data Communication Schematics (See: Powertrain Management/Computers and Control Systems/Information Bus/Diagrams/Electrical
Diagrams)
* Control Module References (See: Testing and Inspection/Programming and Relearning)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Data Link Communications Description and Operation (See: Powertrain Management/Computers and Control Systems/Information
Bus/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)
Circuit/System Testing
1. Verify the following DTCs are not set in the modules as follows:
* SDGM - U1818
* HPCM - U189A
瀚慖f any listed DTC is present, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) to diagnose that DTC prior to this diagnostic.
2. Ignition OFF, disconnect the harness connector of the yaw rate and lateral acceleration sensor.
3. Verify that a test lamp illuminates between the ground circuit terminal 6 and B+.
瀚慖f the test lamp does not illuminate, test the circuit for an open/high resistance or short to ground. If the circuit tests normal, replace the
EBCM.
4. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal 1 and ground.
瀚慖f the test lamp does not illuminate, test the circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
5. Ignition OFF, disconnect harness connector X1 of the SDGM.
6. Test for less than 1.0 ohm between the SDGM and the yaw rate and lateral acceleration sensor on the following circuit terminals.
* PTLAN + SDGM terminal 14 and yaw rate and lateral acceleration sensor terminal 2
* PTLAN - SDGM terminal 12 and yaw rate and lateral acceleration sensor terminal 3
瀚慖f greater than the specified range, test the circuit for an open/high resistance.
7. If the circuits test normal, replace the SDGM.
