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

Ignition ON

This DTC will set when the telescope sensor signal circuit voltage is less than 0.25 volt or greater than 4.75 volts for 2 seconds.

The MSM will not allow the telescoping actuator to operate during memory recall and/or easy exit operations. The actuator will still operate from the tile/telescope switch.

Schematic Reference

Tilt/Telescoping Steering Column Schematics

Connector End View Reference

Steering Wheel and Column Connector End Views

Description and Operation

Steering Wheel and Column Description and Operation

Electrical Information Reference

Scan Tool Reference

Ignition ON, observe the scan tool telescope sensor parameter. The reading should be between 0.25 and 4.75 volts.

1. Ignition OFF, disconnect the harness connector C2 at the telescoping actuator.
2. Ignition OFF, test for less than 1.0 ohm resistance between the low reference circuit terminal A and ground

⇒	If greater than the specified range, test the low reference circuit for 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 Sensor parameter is greater than 4.75 volts.

⇒	If less than the specified range, test the signal circuit terminal C for a short to ground. If the circuit tests normal, replace the MSM.

5. Install a 3A fused jumper wire between the signal circuit terminal C and the low reference circuit terminal A. Verify the scan tool Telescope Sensor parameter is less than 0.25 volt.

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

6. If all circuits tests normal, test or replace the telescoping actuator.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.