Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category |
DTC Descriptor
DTC B2890 4B: Tilt and Telescope Motor Circuit Calibration Not LearnedCircuit Description
The memory seat module MSM learns tilt/telescope 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
The ignition ON.
Conditions for Setting the DTC
The soft stops have not been learned.
Action Taken When the DTC Sets
| • | The tilt and telescope motors 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
Tilt/Telescoping Steering Column Schematics
Connector End View Reference
Description and Operation
Steering Wheel and Column Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for Scan Tool Information
Circuit/System Verification
Operate the vehicle within the Conditions for Running and Setting. Verify DTC B2890 does not reset. If the DTC resets, replace the MSM.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for MSM replacement, setup, and programming
