B2860

DTC B2860 or B2880

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions)provides an overview of each diagnostic category.

DTC Descriptors
DTC B2860 01
- Telescope Position Sensor Circuit Short to Battery

DTC B2860 06
- Telescope Position Sensor Circuit Short to Ground or Open

DTC B2860 5A
- Telescope Position Sensor Circuit Plausibility Failure

DTC B2860 61
- Telescope Position Sensor Actuator Stuck

DTC B2880 01
- Tilt Position Sensor Circuit Short to Battery

DTC B2880 06
- Tilt Position Sensor Circuit Short to Ground or Open

DTC B2880 5A
- Tilt Position Sensor Circuit Plausibility Failure

DTC B2880 61
- Tilt Position Sensor Actuator Stuck

Diagnostic Fault Information





Circuit Description

The memory seat module (MSM) determines the position of the steering column based on inputs received from the tilt or telescope position sensors built into the tilt or telescope actuators. The MSM supplies a 5-volt reference and a low reference to the sensors and monitors the column position via the steering column tilt or telescope sensor signal circuit.

Conditions for Running the DTC

Ignition ON

Conditions for Setting the DTC

B2860 01

The steering column telescope sensor signal voltage is greater than 4.8 volts for more than 2 seconds.

B2860 06

The steering column telescope sensor signal voltage is less than 0.2 volt for more than 2 seconds.

B2860 5A

An incorrect steering column telescope sensor signal voltage is seen.

B2860 61

The steering column telescope sensor signal voltage does not change when the telescope actuator is commanded.

B2880 01

The steering column tilt sensor signal voltage is greater than 4.8 volts for more than 2 seconds.

B2880 06

The steering column tilt sensor signal voltage is less than 0.2 volt for more than 2 seconds.

B2880 5A

An incorrect steering column tilt sensor signal voltage is seen.

B2880 61

The steering column tilt sensor signal voltage does not change when the telescope actuator is commanded.

Action Taken When the DTC Sets

Steering column tilt operations are suspended.

Conditions for Clearing the DTC

* A current DTC will clear when the malfunction is no longer present
* A history DTC will clear after 50 malfunction-free ignition cycles.

Reference Information
Schematic Reference

Tilt/Telescoping Steering Column Schematics (Tilt/Telescoping Steering Column Schematics)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Steering Wheel and Column Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing For Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Control Module References (Programming and Relearning) for Scan Tool Information

Circuit/System Verification

Ignition ON, actuate the telescope or tilt function through the entire range of travel. The telescope or tilt parameter should display between 0.2 and 4.8 volts.

Circuit/System Testing

Telescope or Tilt Sensor Circuit Malfunction
1. Ignition OFF, disconnect the harness connector X2 at the telescope or tilt actuator.
2. Ignition OFF, test for less than 2.0 ohms between the low reference circuit terminal A and ground.

• If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.

3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal B and ground.

• If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.

• If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.

4. Verify the scan tool Telescope or Tilt Sensor parameter is less than 0.2 volt.

• If greater than the specified range, test the signal circuit terminal C for a short to voltage. If the circuit tests normal, replace the MSM.

5. Install a 3A fused jumper wire between the signal circuit terminal C and the 5-volt reference circuit terminal B. Verify the scan tool Telescope or Tilt Sensor parameter is greater than 4.8 volts.

• If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.

6. If all circuits test normal, test or replace the telescope or tilt actuator.

Repair Instructions

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

* Steering Column Replacement (Steering Column Replacement)
* Control Module References (Programming and Relearning)for MSM replacement, setup, and programming