Saturday, July 27, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 619


* 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 Descriptor



DTC B2870 01



- Tilt Up Switch Circuit Short to Battery



DTC B2875 01



- Tilt Down Switch Circuit Short to Battery



Diagnostic Fault Information



Circuit Description



The memory seat module (MSM) receives voltage inputs from the tilt switch based on the position of the switch. The MSM then supplies battery



voltage and a ground to the tilt motor control circuits depending on which direction of movement is requested.



Conditions for Running the DTC



The ignition ON.



Conditions for Setting the DTC



The MSM detects a tilt switch input for more than 30 consecutive seconds after the tilt motor movement has stopped.



Action Taken When the DTC Sets



* The tilt motor will be deactivated.



* Memory recall functions will be disabled.



Conditions for Clearing the DTC



* A current DTC will clear when the failed switch input is no longer active.



* A history DTC will clear after 100 ignition cycles.



Diagnostic Aids



An intermittently stuck tilt switch may cause a DTC to set.



Reference Information



Schematic Reference



Steering Wheel Schematics (See: Diagrams/Electrical Diagrams/Steering/Steering Column/Steering Wheel Schematics)



Connector End View Reference



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



Description and Operation



Steering Wheel and Column Description and Operation (See: Steering and Suspension/Steering/Steering Column/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)

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