Sunday, April 21, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 272


Conditions for Setting the DTC



* The BCM detects excessive current in the cruise control indicator signal circuit.



* The above condition is present for greater than 5 seconds.



Actions Taken When the DTC Sets



* The malfunction indicator lamp (MIL) will not illuminate.



* The cruise control system is disabled.



Conditions for Clearing the DTC



* The condition responsible for setting the DTC no longer exists.



* A history DTC will clear after 40 malfunction-free ignition cycles have occurred.



Reference Information



Schematic Reference



Cruise Control Schematics (See: Cruise Control/Diagrams/Electrical Diagrams)



Connector End View Reference



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



Description and Operation



Cruise Control Description and Operation (See: Cruise Control/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. Ignition OFF, disconnect the harness connector at the steering wheel controls switch - left.



2. Ignition ON, verify that a test lamp illuminates between the signal circuit terminal 9 and B+.



锟斤拷 If the test lamp does not illuminate, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal,



replace the BCM.



3. If all circuits test normal, test or replace the steering wheel controls switch - left.



Repair Instructions



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



* Steering Wheel Control Switch Assembly Replacement (See: Accessories and Optional Equipment/Sensors and Switches - Accessories and



Optional Equipment/Steering Mounted Controls Assembly/Service and Repair)



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



B0958



DTC B0958, B0959, B0960, or B0961



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using the 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

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