2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 706
Tilt Actuator
1. Ignition OFF, disconnect the harness connector at the tilt actuator.
2. Test for less than 2.0 ohms between the control terminal A and the control terminal B.
瀚慖f greater than the specified range, replace the tilt actuator.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Tilt Motor Replacement (See: Steering and Suspension/Steering/Steering Column/Tilt Wheel Motor/Service and Repair)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming
B2890
DTC B2890
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 Descriptor
DTC B2890 4B
- Tilt and Telescope Motor Circuit Calibration Not Learned
Circuit Description
The memory seat module (MSM) learns tilt soft stops approximately 1.3 cm (0.5 in) from the mechanical ends of travel. The system uses soft stops
to prevent wear on the system by ensuring that the steering column movement stops before it reaches its mechanical end of travel in any direction.
The soft stops are initially programmed at the factory. The stop positions may be reprogrammed, which is necessary any time the MSM is replaced.
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
The soft stops have not been learned.
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 soft stops have been learned.
* A history DTC will clear after 100 ignition cycles.
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
