For 1990-2009 cars

### 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 Learned

### Circuit 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

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

Component Connector End Views

#### Description and Operation

Steering Wheel and Column Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### Scan Tool Reference

Control Module References for Scan Tool Information

### Circuit/System Verification

1. Ignition ON, perform the scan tool Learn Column Soft Stops procedure. Refer to Telescoping Steering Column Calibration
2. 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