Steering Wheel & Steering Column Cadillac DTS I

Fastener Tightening Specifications

Scheme 1

Scheme 2

Scheme 3

Scheme 4

Scheme 5

Scheme 6

Scheme 7

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

Diagnostic Starting Point - Steering Column

Begin the system diagnosis with the Diagnostic System Check - Vehicle . The Diagnostic System Check will provide the following information

1. The identification of the control module which commands the system
2. The ability of the control module to communicate through the serial data circuit
3. The identification of any stored diagnostic trouble codes (DTCs) and their status

The use of the diagnostic system check will identify the correct procedure for diagnosing the system and where the procedure is located.

Diagnostic Instructions

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category

Diagnostic Fault Information

Circuit Description

The memory seat module (MSM) receives voltage inputs from the tilt/telescope switch based on the position of the switch. The MSM then supplies battery voltage and a ground to the tilt or telescope motor control circuits depending on which direction of movement is requested.

Conditions for Running the DTC

The ignition ON.

Conditions for Setting the DTC

The MSM detects a telescope forward switch input for more than 30 consecutive seconds after forward movement of the motor has stopped.

Action Taken When the DTC Sets

1. The telescope motor will be deactivated.
2. Memory recall functions will be disabled.

Conditions for Clearing the DTC

1. A current DTC will clear when the failed switch input is no longer active.
2. A history DTC will clear after 100 ignition cycles.

Diagnostic Aids

An intermittently stuck telescope switch may cause this DTC to set.

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

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

Circuit/System Verification

Ignition ON, view the scan tool Telescope Forward Switch parameter while cycling the tilt/telescope switch between the neutral and TELESCOPE IN position. The parameter should change between Active and Inactive.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the tilt/telescope switch.
2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 4 and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
3. Verify the scan tool Telescope Forward Switch parameter is Inactive. If not the specified value, test the signal circuit terminal 3 for a short to voltage. If the circuit tests normal, replace the MSM.
4. Install a 3A fused jumper wire between the signal circuit terminal 3 and the B+ circuit terminal 4. Verify the scan tool Telescope Forward Switch parameter is Active. If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
5. If all circuit test normal, test or replace the tilt/telescope switch.

Component Testing

Tilt/Telescope Switch

1. Ignition OFF, disconnect the harness connector at the tilt/telescope switch.
2. Test for infinite resistance between the following terminals with the switch in the neutral position: B+ terminal 4 and signal terminal 5 B+ terminal 4 and signal terminal 1 B+ terminal 4 and signal terminal 2 B+ terminal 4 and signal terminal 3 If less than the specified range, replace the tilt/telescope switch.
3. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 5 with the switch in the TILT UP position. If greater than the specified range, replace the tilt/telescope switch.
4. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 1 with the switch in the TILT DOWN position. If greater than the specified range, replace the tilt/telescope switch.
5. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 2 with the switch in the TELESCOPE OUT position. If greater than the specified range, replace the tilt/telescope switch.
6. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 3 with the switch in the TELESCOPE IN position. If greater than the specified range, replace the tilt/telescope switch.

Repair Procedures

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Column Replacement»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for MSM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category

The memory seat module (MSM) receives voltage inputs from the tilt/telescope switch based on the position of the switch. The MSM then supplies battery voltage and a ground to the tilt or telescope motor control circuits depending on which direction of movement is requested.

The ignition ON.

The MSM detects a telescope rearward switch input for more than 30 consecutive seconds after rearward movement of the motor has stopped.

1. The telescope motor will be deactivated.
2. Memory recall functions will be disabled.

1. A current DTC will clear when the failed switch input is no longer active.
2. A history DTC will clear after 100 ignition cycles.

An intermittently stuck telescope switch may cause this DTC to set.

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

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

Ignition ON, view the scan tool Telescope Rearward Switch parameter while cycling the tilt/telescope switch between the neutral and TELESCOPE OUT position. The parameter should change between Active and Inactive.

1. Ignition OFF, disconnect the harness connector at the tilt/telescope switch.
2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 4 and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
3. Verify the scan tool Telescope Rearward Switch parameter is Inactive. If not the specified value, test the signal circuit terminal 2 for a short to voltage. If the circuit tests normal, replace the MSM.
4. Install a 3A fused jumper wire between the signal circuit terminal 2 and the B+ circuit terminal 4. Verify the scan tool Telescope Rearward Switch parameter is Active. If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
5. If all circuit test normal, test or replace the tilt/telescope switch.

Tilt/Telescope Switch

1. Ignition OFF, disconnect the harness connector at the tilt/telescope switch.
2. Test for infinite resistance between the following terminals with the switch in the neutral position: B+ terminal 4 and signal terminal 5 B+ terminal 4 and signal terminal 1 B+ terminal 4 and signal terminal 2 B+ terminal 4 and signal terminal 3 If less than the specified range, replace the tilt/telescope switch.
3. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 5 with the switch in the TILT UP position. If greater than the specified range, replace the tilt/telescope switch.
4. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 1 with the switch in the TILT DOWN position. If greater than the specified range, replace the tilt/telescope switch.
5. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 2 with the switch in the TELESCOPE OUT position. If greater than the specified range, replace the tilt/telescope switch.
6. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 3 with the switch in the TELESCOPE IN position. If greater than the specified range, replace the tilt/telescope switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Column Replacement»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for MSM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

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

1. The ignition is ON
2. DTC B1327 is not set as current.

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.

Steering column telescope operation are suspended.

1. A current DTC will clear when the malfunction is no longer present
2. A history DTC will clear after 40 malfunction-free ignition cycles.

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

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

1. Ignition ON, observe the scan tool Telescope Forward Switch and Telescope Rearward Switch parameters while cycling the tilt/telescope switch between the TELESCOPE IN and TELESCOPE OUT positions. The parameters should cycle between Active and Inactive. If the parameters do not cycle between the specified values, refer to «Steering Column Tilt/Telescoping Inoperative»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column) .
2. Observe the scan tool Telescope Sensor parameter. The reading should be between 0.2 and 4.8 volts. If not within the specified range, refer to «Telescope Sensor Circuit Malfunction»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column) .
3. Command the column to telescope in and out using the tilt/telescope switch. The column should move forward and rearward. If the column does not operate as specified, refer to «Telescoping Actuator Circuit Malfunction»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column) .

Telescope Sensor Circuit Malfunction

1. Ignition OFF, disconnect the harness connector X2 at the telescoping 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 greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM. 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.
4. Verify the scan tool Telescope 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 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 telescoping actuator.

Telescoping Actuator Circuit Malfunction

1. Ignition OFF, disconnect the harness connector X1 at the telescoping actuator.
2. Install a test lamp between the control circuit terminal A and the control circuit terminal B.
3. Command the column to telescope in and out using the tilt/telescope switch. The test lamp should illuminate with each command. If the test lamp does not illuminate, test both control circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the MSM.
4. If all circuits test normal, test or replace the telescoping actuator.

Telescoping Actuator

1. Ignition OFF, disconnect the harness connector X1 at the telescoping actuator.
2. Test for less than 2.0 ohms between the control terminal A and the control terminal B. If greater than the specified range, replace the telescoping actuator.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Column Replacement»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for MSM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category

The memory seat module (MSM) receives voltage inputs from the tilt/telescope switch based on the position of the switch. The MSM then supplies battery voltage and a ground to the tilt or telescope motor control circuits depending on which direction of movement is requested.

The ignition ON.

The MSM detects a tilt up switch input for more than 30 consecutive seconds after up movement of the motor has stopped.

1. The tilt motor will be deactivated.
2. Memory recall functions will be disabled.

1. A current DTC will clear when the failed switch input is no longer active.
2. A history DTC will clear after 100 ignition cycles.

An intermittently stuck tilt switch may cause this DTC to set.

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

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

Ignition ON, view the scan tool Tilt Up Switch parameter while cycling the tilt/telescope switch between the neutral and TILT UP position. The parameter should change between Active and Inactive.

1. Ignition OFF, disconnect the harness connector at the tilt/telescope switch.
2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 4 and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
3. Verify the scan tool Tilt Up Switch parameter is Inactive. If not the specified value, test the signal circuit terminal 5 for a short to voltage. If the circuit tests normal, replace the MSM.
4. Install a 3A fused jumper wire between the signal circuit terminal 5 and the B+ circuit terminal 4. Verify the scan tool Tilt Up Switch parameter is Active. If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
5. If all circuit test normal, test or replace the tilt/telescope switch.

Tilt/Telescope Switch

1. Ignition OFF, disconnect the harness connector at the tilt/telescope switch.
2. Test for infinite resistance between the following terminals with the switch in the neutral position: B+ terminal 4 and signal terminal 5 B+ terminal 4 and signal terminal 1 B+ terminal 4 and signal terminal 2 B+ terminal 4 and signal terminal 3 If less than the specified range, replace the tilt/telescope switch.
3. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 5 with the switch in the TILT UP position. If greater than the specified range, replace the tilt/telescope switch.
4. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 1 with the switch in the TILT DOWN position. If greater than the specified range, replace the tilt/telescope switch.
5. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 2 with the switch in the TELESCOPE OUT position. If greater than the specified range, replace the tilt/telescope switch.
6. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 3 with the switch in the TELESCOPE IN position. If greater than the specified range, replace the tilt/telescope switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Column Replacement»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for MSM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category

The memory seat module (MSM) receives voltage inputs from the tilt/telescope switch based on the position of the switch. The MSM then supplies battery voltage and a ground to the tilt or telescope motor control circuits depending on which direction of movement is requested.

The ignition ON.

The MSM detects a tilt down switch input for more than 30 consecutive seconds after down movement of the motor has stopped.

1. The tilt motor will be deactivated.
2. Memory recall functions will be disabled.

1. A current DTC will clear when the failed switch input is no longer active.
2. A history DTC will clear after 100 ignition cycles.

An intermittently stuck tilt switch may cause this DTC to set.

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

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

Ignition ON, view the scan tool Tilt Down Switch parameter while cycling the tilt/telescope switch between the neutral and TILT DOWN position. The parameter should change between Active and Inactive.

1. Ignition OFF, disconnect the harness connector at the tilt/telescope switch.
2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 4 and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
3. Verify the scan tool Tilt Down Switch parameter is Inactive. If not the specified value, test the signal circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the MSM.
4. Install a 3A fused jumper wire between the signal circuit terminal 1 and the B+ circuit terminal 4. Verify the scan tool Tilt Down Switch parameter is Active. If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
5. If all circuit test normal, test or replace the tilt/telescope switch.

Tilt/Telescope Switch

1. Ignition OFF, disconnect the harness connector at the tilt/telescope switch.
2. Test for infinite resistance between the following terminals with the switch in the neutral position: B+ terminal 4 and signal terminal 5 B+ terminal 4 and signal terminal 1 B+ terminal 4 and signal terminal 2 B+ terminal 4 and signal terminal 3 If less than the specified range, replace the tilt/telescope switch.
3. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 5 with the switch in the TILT UP position. If greater than the specified range, replace the tilt/telescope switch.
4. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 1 with the switch in the TILT DOWN position. If greater than the specified range, replace the tilt/telescope switch.
5. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 2 with the switch in the TELESCOPE OUT position. If greater than the specified range, replace the tilt/telescope switch.
6. Test for less than 1 ohm between the B+ terminal 4 and the signal terminal 3 with the switch in the TELESCOPE IN position. If greater than the specified range, replace the tilt/telescope switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Column Replacement»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for MSM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

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

1. The ignition is ON
2. DTC B1327 is not set as current.

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.

Steering column tilt operation are suspended.

1. A current DTC will clear when the malfunction is no longer present
2. A history DTC will clear after 40 malfunction-free ignition cycles.

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

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

1. Ignition ON, observe the scan tool Tilt Up Switch and Tilt Down Switch parameters while cycling the tilt/telescope switch between the TILT UP and TILT DOWN positions. The parameters should cycle between Active and Inactive. If the parameters do not cycle between the specified values, refer to «Steering Column Tilt/Telescoping Inoperative»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column) .
2. Observe the scan tool Tilt Sensor parameter. The reading should be between 0.2 and 4.8 volts. If not within the specified range, refer to «Tilt Sensor Circuit Malfunction»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column) .
3. Command the column to tilt up and down using the tilt/telescope switch. The column should move up and down. If the column does not operate as specified, refer to «Tilt Actuator Circuit Malfunction»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column) .

Tilt Sensor Circuit Malfunction

1. Ignition OFF, disconnect the harness connector X2 at the 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 greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM. 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.
4. Verify the scan tool 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 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 tilt actuator.

Tilt Actuator Circuit Malfunction

1. Ignition OFF, disconnect the harness connector X1 at the tilt actuator.
2. Install a test lamp between the control circuit terminal A and the control circuit terminal B.
3. Command the column to tilt up and down using the tilt/telescope switch. The test lamp should illuminate with each command. If the test lamp does not illuminate, test both control circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the MSM.
4. If all circuits test normal, test or replace the tilt actuator.

Tilt Actuator

1. Ignition OFF, disconnect the harness connector X1 at the tilt actuator.
2. Test for less than 2.0 ohms between the control terminal A and the control terminal B. If greater than the specified range, replace the tilt actuator.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Column Replacement»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for MSM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category

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.

The ignition ON.

The soft stops have not been learned.

1. The tilt and telescope motors will be deactivated.
2. Memory recall functions will be disabled.

1. A current DTC will clear when the soft stops have been learned.
2. A history DTC will clear after 100 ignition cycles.

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

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

1. Ignition ON, perform the scan tool Learn Column Soft Stops procedure. Refer to «Telescoping Steering Column Calibration»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column)
2. Operate the vehicle within the Conditions for Running and Setting. Verify DTC B2890 does not reset. If the DTC resets, replace the MSM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for MSM replacement, setup, and programming

Symptoms - Steering Wheel & Column

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) before using the Symptom Tables in order to verify that all of the following are true: There are no DTCs set. The control module can communicate via the serial data link.
2. Review the system operation in order to familiarize yourself with the system functions. Refer to «Steering Wheel and Column Description and Operation»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column) .

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the tilt/telescoping steering column. Refer to «Checking Aftermarket Accessories»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__checking-aftermarket-accessories) .
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Poor electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «Steering Column Tilt/Telescoping Inoperative»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Ignition Can/Cannot Be Turned Off with Transmission in Any Gear»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis)
3. «Heated Steering Wheel Inoperative»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column)
4. «Ignition Key Cannot Be Removed from the Ignition Lock Cylinder (Floor Shift)»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__ignition-key-cannot-be-removed-from) or «Ignition Key Cannot Be Removed from the Ignition Lock Cylinder (Column Shift)»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__ignition-key-cannot-be-removed-from)
5. «Ignition Key Cannot Turn or Sticks in Any Position»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__ignition-key-cannot-turn-or-sticks)
6. «Noise in Steering Column»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column__noise-in-steering-column)
7. «High Shift Effort»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column__high-shift-effort)
8. «Looseness in Steering Column»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column__looseness-in-steering-column)

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit/System Description

The heated steering wheel control module controls the heated steering wheel and the heated steering wheel ON indicator based on an input from the heated steering wheel switch. When the heated steering wheel switch is pressed, the switch signal circuit is pulled to ground. This indicates to the heating steering wheel control module that steering wheel heat is requested. When the request is seen, the heat steering module supplies voltage to the indicator lamp and supplies voltage to the heating elements, which are internal to the module.

Schematic Reference

Steering Wheel Schematics

Connector End View Reference

Component Connector End Views for Component Connector End View

Description and Operation

Steering Wheel and Column Description and Operation

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Waterleak Test Preparation»(/cadillac/dts/i-2005-2011/remont/exterior-body-panels/#waterleaks__waterleak-test-preparation)

Ignition ON, press and release the heated steering wheel switch. The heated steering wheel indicator should illuminate and the left and right sides of the steering wheel should become warm.

1. Ignition OFF, disconnect the harness connector at the heated steering wheel control module.
2. Ignition OFF, test for less than 1.0 ohm of resistance between the ground circuit terminal D and ground. If greater than the specified value, test the ground circuit for an open/high resistance.
3. Ignition ON, verify a test lamp illuminates between the ignition circuit terminal A and ground. If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
4. Install a 3A fused jumper wire between the control circuit terminal C and B+. Verify the heated steering wheel indicator is illuminated. If the indicator does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the left steering wheel control switch.
5. Install a test lamp between the supply voltage circuit terminal B and B+.
6. Cycle the heated steering wheel switch. The test lamp should turn ON and OFF when changing between the commanded states. If the test lamp is always ON, test the supply voltage circuit for a short to ground. If the circuit tests normal, test or replace the left steering wheel control switch. If the test lamp is always OFF, test the supply voltage circuit for a short to voltage or and open/high resistance. If the circuit tests normal, test or replace the left steering wheel control switch.
7. If all circuits test normal, replace the heated steering wheel control module

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Wheel Control Switch Assembly Replacement»(/cadillac/dts/i-2005-2011/remont/memory-modules/#configurable-customer-control-system)
2. «Inflatable Restraint Steering Wheel Module Coil Replacement»(/cadillac/dts/i-2005-2011/remont/airbag/#supplemental-inflatable-restraint-system)
3. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for heated steering wheel control module replacement, programming, and setup

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category

The memory seat module (MSM) receives voltage inputs from the tilt/telescope switch based on the position of the switch. The MSM then supplies battery voltage and a ground to the tilt or telescope motor control circuits depending on which direction of movement is requested.

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

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

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

1. Ignition ON, observe the scan tool Tilt Up Switch, Tilt Down Switch, Telescope Forward Switch and Telescope Rearward Switch parameters while cycling the tilt/telescope switch between the TILT UP, TILT DOWN, TELESCOPE IN, and TELESCOPE OUT positions. The appropriate parameter should cycle between Active and Inactive. If any of the parameters do not cycle between the specified values, refer to «Tilt/Telescope Switch Circuit Malfunction»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column) .
2. Observe the scan tool Tilt Sensor and Telescope Sensor parameters. Both reading should be between 0.2 and 4.8 volts. If not within the specified range, refer to «Tilt/Telescope Sensor Circuit Malfunction»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column) .
3. Command the column to tilt up and down and telescope in and out using the tilt/telescope switch. The column should move in the commanded direction. If the column does not operate as specified, refer to «Tilt/Telescope Actuator Circuit Malfunction»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column) .

Tilt/Telescope Switch Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the tilt/telescope switch.
2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 4 and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
3. Verify the all the scan tool tilt/telescope switch parameters are Inactive. Tilt Up Switch - signal circuit terminal 5 Tilt Down Switch - signal circuit terminal 1 Telescope Forward Switch - signal circuit terminal 3 Telescope Rearward Switch - signal circuit terminal 2 If any of the parameters are not the specified value, test the appropriate signal circuit terminal for a short to voltage. If the circuit tests normal, replace the MSM.
4. Install a 3A fused jumper wire between the appropriate signal circuit terminal and the B+ circuit terminal 4. Verify the appropriate scan tool tilt/telescope switch parameter is Active. Tilt Up Switch - signal circuit terminal 5 Tilt Down Switch - signal circuit terminal 1 Telescope Forward Switch - signal circuit terminal 3 Telescope Rearward Switch - signal circuit terminal 2 If not the specified value, test the appropriate signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
5. If all circuit test normal, test or replace the tilt/telescope switch.

Tilt/Telescope Sensor Circuit Malfunction

1. Ignition OFF, disconnect the harness connector X2 at the appropriate tilt/telescope actuator.
2. Ignition OFF, test for less than 2.0 ohms of resistance 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 greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM. 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.
4. Verify the appropriate scan tool tilt/telescope sensor parameter is less than 0.2 volts. 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 appropriate scan tool tilt/telescope 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 appropriate tilt/telescope actuator.

Tilt/Telescope Actuator Circuit Malfunction

1. Ignition OFF, disconnect the harness connector X1 at the appropriate tilt/telescope actuator.
2. Install a test lamp between the control circuit terminal A and the control circuit terminal B.
3. Command the column to tilt up and down or telescope in and out using the tilt/telescope switch. The test lamp should illuminate with each command. If the test lamp does not illuminate, test both control circuits for a short to ground or an open/high resistance. If the circuits test normal, replace the MSM.
4. If all circuits test normal, test or replace the appropriate tilt/telescoping actuator.

Tilt/Telescope Switch

1. Ignition OFF, disconnect the harness connector at the tilt/telescope switch.
2. Test for infinite resistance between the following terminals with the switch in the neutral position: B+ terminal 4 and signal terminal 5 B+ terminal 4 and signal terminal 1 B+ terminal 4 and signal terminal 2 B+ terminal 4 and signal terminal 3 If less than the specified range, replace the tilt/telescope switch.
3. Test for less than 1 ohm or resistance between the B+ terminal 4 and the signal terminal 5 with the switch in the TILT UP position. If greater than the specified range, replace the tilt/telescope switch.
4. Test for less than 1 ohm or resistance between the B+ terminal 4 and the signal terminal 1 with the switch in the TILT DOWN position. If greater than the specified range, replace the tilt/telescope switch.
5. Test for less than 1 ohm or resistance between the B+ terminal 4 and the signal terminal 2 with the switch in the TELESCOPE OUT position. If greater than the specified range, replace the tilt/telescope switch.
6. Test for less than 1 ohm or resistance between the B+ terminal 4 and the signal terminal 3 with the switch in the TELESCOPE IN position. If greater than the specified range, replace the tilt/telescope switch.

Tilt/Telescoping Actuator

1. Ignition OFF, disconnect the harness connector X1 at the appropriate tile/telescoping actuator.
2. Test for less than 2.0 ohms of resistance between the control terminal A and the control terminal B. If greater than the specified range, replace the appropriate tilt/telescoping actuator.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Column Replacement»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for MSM replacement, setup, and programming

Steering Column Tilt Function Inoperative

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The heated steering wheel control module controls the heated steering wheel and the heated steering wheel ON indicator based on an input from the heated steering wheel switch. When the heated steering wheel switch is pressed, the switch signal circuit is pulled to ground. This indicates to the heating steering wheel control module that steering wheel heat is requested. When the request is seen, the heat steering module supplies voltage to the indicator lamp and supplies voltage to the heating elements, which are internal to the module.

Schematic Reference

Steering Wheel Schematics

Connector End View Reference

Component Connector End Views for Component Connector End View

Description and Operation

Steering Wheel and Column Description and Operation

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Waterleak Test Preparation»(/cadillac/dts/i-2005-2011/remont/exterior-body-panels/#waterleaks__waterleak-test-preparation)

Ignition ON, press and release the heated steering wheel switch. The heated steering wheel indicator should illuminate and the left and right sides of the steering wheel should become warm.

1. Ignition OFF, disconnect the harness connector at the heated steering wheel control module.
2. Ignition OFF, test for less than 1.0 ohm of resistance between the ground circuit terminal D and ground. If greater than the specified value, test the ground circuit for an open/high resistance.
3. Ignition ON, verify a test lamp illuminates between the ignition circuit terminal A and ground. If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
4. Install a 3A fused jumper wire between the control circuit terminal C and B+. Verify the heated steering wheel indicator is illuminated. If the indicator does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the left steering wheel control switch.
5. Install a test lamp between the supply voltage circuit terminal B and B+.
6. Cycle the heated steering wheel switch. The test lamp should turn ON and OFF when changing between the commanded states. If the test lamp is always ON, test the supply voltage circuit for a short to ground. If the circuit tests normal, test or replace the left steering wheel control switch. If the test lamp is always OFF, test the supply voltage circuit for a short to voltage or and open/high resistance. If the circuit tests normal, test or replace the left steering wheel control switch.
7. If all circuits test normal, replace the heated steering wheel control module

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Wheel Control Switch Assembly Replacement»(/cadillac/dts/i-2005-2011/remont/memory-modules/#configurable-customer-control-system)
2. «Inflatable Restraint Steering Wheel Module Coil Replacement»(/cadillac/dts/i-2005-2011/remont/airbag/#supplemental-inflatable-restraint-system)
3. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for heated steering wheel control module replacement, programming, and setup

Noise in Steering Column

High Shift Effort

Looseness in Steering Column

Scheme 8

Scheme 9

Inspection Procedure

1. Vehicles involved in accidents involving the following conditions may also have a damaged or misaligned steering column: Frame damage Major body or sheet metal damage Where the steering column has been impacted Where supplemental inflatable restraint systems deployed
2. Inspect the capsules on the steering column bracket assembly. All capsules must be securely seated in the bracket slots and checked for any loose conditions when pushed or pulled by hand.
3. Observe how the bracket is attached to the jacket assembly. If the capsules are not securely seated and the bracket is bolted to the jacket assembly, replace only the bracket. If the capsules are not securely seated and the bracket is welded to the jacket assembly, replace only the jacket assembly.
4. Inspect for jacket assembly collapse by measuring the distance as shown in the graphic. Replace the jacket assembly if the measured dimensions are not within specifications.
5. Inspect for tab (1) breakage on the bearing and adapter assembly.
6. Visually inspect the steering shaft for sheared injected plastic (1). If the steering shaft shows sheared plastic, replace the steering shaft.
7. Any frame damage that could cause a bent steering shaft must have the steering shaft runout checked. Using a dial indicator at the lower end of the steering shaft, rotate the steering wheel. The runout must not exceed 1.60 mm (0.06 in).

Scheme 10

Tilt/Telescoping Soft Stops

After replacement of the driver position module (DPM), it is necessary to program the tilt/telescoping soft stops. Each soft stop is a programmable end of travel that is set approximately 1.3 cm (0.5 in) from the mechanical end of travel. The steering column has a soft stop set at each end of the telescoping in/out and tilt up/down movement. 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 DPM, the tilt actuator or telescope actuators replaced, as described in the following procedure.

Tilt/Telescoping Soft Stop Programming Procedure

1. Ignition ON, Engine OFF.
2. Connect a scan tool to the vehicle.
3. Select Driver Position Module.
4. Select Special Functions.
5. Select Driver Seat.
6. Select Learn Column Soft Stops.
7. Follow the scan tool on-screen instructions.

Scheme 11

Scheme 12

Scheme 13

Scheme 14

Scheme 15

Scheme 16

Scheme 17

Repair Procedure

1. Remove the steering wheel. Refer to «Steering Wheel Replacement»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column) .
2. Wash the wood section of the wheel with wax and grease remover.
3. Mask off the non-wood area of the steering wheel.
4. Sand with 400 grit sand paper first. Finish sanding with 600 grit.
5. Wash the wood section of the wheel again with wax and grease remover.
6. Clear coat the steering wheel using the appropriate information in the body repair section.
7. Install the steering wheel. Refer to «Steering Wheel Replacement»(/cadillac/dts/i-2005-2011/remont/steering-column-switches/#steering-wheel-steering-column) .

Scheme 18

Scheme 19

Scheme 20

Scheme 21

Scheme 22

Scheme 23

Scheme 24

Scheme 25

Removal Procedure

1. Verify the type of steering wheel position sensor.
2. From the technicians point of view, the FRONT of the sensor (1) connector will be on the right.
3. Remove the connector from the sensor.
4. Remove the sensor (1) from the adapter and bearing assembly.
5. To install the sensor, proceed to step 1 in the installation section.
6. From the technicians point of view, the FRONT of the sensor will have: A foam ring (2) A pin hole (1) for centering the pin-Note the location of the pin hole. A flush rotor flange cuff (4)
7. Make an alignment mark on the flush rotor flange cuff (3).
8. Remove the connector from the sensor.
9. Remove the sensor from the adapter and bearing assembly.
10. To install the sensor, proceed to step 5 in the installation procedure.
11. From the technicians point of view, the FRONT of the sensor will have: A raised rotor flange cuff (3) An alignment mark (2) on the rotor flange cuff (3) for installation A pin hole (1) for the centering pin-Note the location of the pin hole.
12. Remove the connector from the sensor.
13. Remove the sensor from the adapter and bearing assembly.
14. To install the sensor, proceed to step 9 in the installation procedure.
15. From the technicians point of view, the FRONT of the sensor will have: A raised rotor flange cuff (3) An alignment mark (2) on the rotor flange cuff (3) for installation A pin hole (1) for the centering pin-Note location of the pin hole. A sensor clip in FRONT of the sensor
16. Remove the connector from the sensor.
17. Remove the sensor clip from the sensor.
18. Remove the sensor from the adapter and bearing assembly.
19. To install the sensor, proceed to step 13 in the installation procedure.
20. From the technicians point of view, the FRONT of the sensor will have: A flush rotor flange cuff (3) A pin hole (1) for the centering pin-Note the location of the pin hole. An alignment mark (2) on the flush rotor flange cuff (3) for installation
21. Remove the connector from the sensor.
22. Remove the sensor from the adapter and bearing assembly.
23. To install the sensor, proceed to step 17 in the installation procedure.
24. From the technicians point of view, the FRONT of the sensor will have: A flush rotor flange cuff (4) A pin hole (2) for the centering pin-Note the location of the pin hole. An alignment mark (3) on the flush rotor flange cuff (4) for installation A foam ring (1)
25. Remove the connector from the sensor.
26. Remove the sensor from the adapter and bearing assembly.
27. To install the sensor, proceed to step 21 in the installation procedure.

Installation Procedure

1. If installing a new sensor, it will come with a pin installed in the sensor. Do not remove the pin until the sensor is seated.
2. From the technicians point of view, the FRONT of the sensor (1) connector will be on your right. From the technicians point of view, the BACK of the sensor (2) connector will be on your left.
3. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install into the adapter and bearing assembly.
4. Install the connector to the sensor.
5. From the technicians point of view, the FRONT of the sensor will have: A foam ring (4) A pin hole (7) for the centering pin-Note the location of the pin hole. A flushed rotor flange cuff (6) An alignment mark (5) for installation
6. From the technicians point of view, the BACK of the sensor will have: Double D flats (1) A foam ring (3) An alignment tab (2) for installing into the adapter and bearing assembly A view of the inside of the connector
7. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install into the adapter and bearing assembly.
8. Install the connector to the sensor.
9. From the technicians point of view, the FRONT of the sensor will have: A pin hole (3) for the centering pin-Note location of the pin hole. A raised rotor flange cuff (5) An alignment mark (4) for installation
10. From the technicians point of view, the BACK of the sensor will have: Double D flats (1) An alignment tab (2) for installing into the adapter and bearing assembly
11. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install into the adapter and bearing assembly.
12. Install the connector to the sensor.
13. From the technicians point of view, the FRONT of the sensor will have: A pin hole (2) for the centering pin-Note the location of the pin hole. A raised rotor flange cuff (4) An alignment mark (3) for installation
14. From the technicians point of view, the BACK of the sensor will have an alignment tab (1) for installation. This sensor does not have double D flats.
15. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install into the adapter and bearing assembly.
16. Install the connector to the sensor.
17. From the technicians point of view, the FRONT of the sensor will have: A pin hole (2) for the centering pin-Note the location of the pin hole. A flush rotor flange cuff (4) An alignment mark (3) for installation
18. From the technicians point of view, the BACK of the sensor will have an alignment tab (1) for installation. This sensor does not have double D flats.
19. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install into the adapter and bearing assembly.
20. Install the connector to the sensor.
21. From the technicians point of view, the FRONT of the sensor will have: A pin hole (3) for the centering pin-Note location of the pin hole. A flush rotor flange cuff (5) An alignment mark (4) for installation A foam ring (6)
22. From the technicians point of view, the BACK of the sensor will have: Double D flats (1) An alignment tab (2) for installing into the adapter and bearing assembly
23. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install into the adapter and bearing assembly.
24. Install the connector to the sensor.

Scheme 26

Scheme 27

Tilt/Telescoping Switch Operation

The tilt/telescoping steering column has a four-position switch which may be used to adjust the position of the steering wheel in or out which is telescope and up or down which is tilt. The position of the column may be changed as follows

1. Press the switch up to tilt the column up.
2. Press the switch down to tilt the column down.
3. Press the switch forward and the column moves toward the front of the vehicle.
4. Press the switch rearward and the column moves toward the rear of the vehicle.

The steering column module (SCM) receives inputs from the tilt/telescope switch to manually move the column to a desired position. Pressing the control switch sends an input to the SCM. The SCM receives an input and actuates the corresponding column motor.

Pressing the switch momentarily in either the UP or DOWN, or IN or OUT position, and releasing within 0.5 seconds, causes the column to advance slightly in the corresponding direction then stop. This feature allows fine control of the steering column position in each direction. If the switch is pressed and held for longer than 0.5 seconds, the column advances slightly in that direction, pauses, then resumes movement as long as the switch is held.

Motors

Both the tilt and telescoping motors are reversible. For example, the tilt motor moves the column both up and down. When the SCM receives an input to move the column up, the SCM supplies battery positive voltage and ground to the tilt motor in order to move the column up. When the SCM receives a column down input, the SCM supplies battery positive voltage and ground to the same motor, but with a reverse polarity. When the voltage polarity is reversed, the motor runs in the opposite direction and moves the column down.

Position Sensors

Two position sensors are used by the SCM to store column positions in memory and to return the column to the stored memory positions. The SCM provides a 5-volt reference voltage and a ground to both the tilt and telescoping position sensors. The sensor feedback circuit voltage varies from 0.25-4.75 volts. Each sensor is mounted to its corresponding motor cable assembly. When the motor rotates its cable, the resistance of the sensor varies. The SCM monitors the feedback voltage to determine the column position via the tilt and telescoping position sensor input circuits. When an entry or exit position is saved, the SCM stores the column positions by recording each position sensor's feedback voltage. When an entry or exit position is commanded, the module moves the motors until all the position sensor feedback voltages equal the feedback voltages stored in memory.

Tilt/Telescoping Memory

Memory settings and the personalization of steering wheel positions are available with the tilt/telescoping steering column. The data stored consists of entry positions and exit positions. The entry position is the position that the steering column moves in when the ignition is turned ON. The exit position is the direction that the steering column moves in when the ignition is turned OFF and the driver's door is opened.

An initial memory setting is set in the SCM at the assembly plant. This setting may be changed to suit the customer at the time of purchase or at anytime in the future.

Entry/Exit Personalization

The SCM stores personalization information. The driver information center (DIC) is used to enable and disable the personalization feature in the SCM. A Class 2 message is sent to the SCM, by the DIC, which specifies that the SCM enable the personalization feature until disabled again using the DIC.

The steering column control module can store 6 possible positions: 3 entry positions and 3 exit positions.

1. Driver 1 exit position, set using the memory switches
2. Driver 2 exit position, set using the memory switches
3. Default exit position which is all forward, all up, with no memory position set
4. Driver 1 entry position, set using the memory switches
5. Driver 2 entry position, set using the memory switches
6. Last known driver entry position which is when the ignition is turned ON by an unknown driver

Memory Setting

When the driver door switch assembly (DDSA) receives inputs from the memory function switch, the steering column personalization positions may be recorded for one or two different drivers. Once a steering column driving entry or exit position is adjusted by the driver it must be set in memory. To record a position, the driver must press the SET MEMORY button, which is followed by a chime to acknowledge that input. Within 5 seconds, either the MEMORY 1 or MEMORY 2 button must be pressed. When the DDM receives these inputs, it sends a class 2 message to the SCM. The SCM records the feedback voltages from the column position sensors for that driver. A single chime is sounded to acknowledge that the position was recorded.

To record a second position, the second driver must press the SET MEMORY 2 button, after they have made the appropriate adjustments, and the process continued.

Memory Personalization Recall

When the driver presses the MEMORY 1 or MEMORY 2 button, the DDSA receives the input and a single chime is sounded. The DDSA sends a class 2 message to the SCM indicating which driver memory setting has been selected. The SCM applies both battery positive voltage and ground to the column motors until all the column position sensor feedback voltages equal the feedback voltages stored in memory for the appropriate driver.

When a keyless entry transmitter is used to unlock the vehicle doors, the remote function actuator (RFA) module communicates which driver key fob performed that command. The SCM receives the unlock command via a class 2 message from the RFA module.

Tilt/Telescoping Description

The energy absorbing and locking steering column includes three important features in addition to the steering function.

1. The steering column is energy absorbing and is designed to compress in a front-end collision which will lessen the chance of injury to the driver.
2. The steering column has a tilt/telescoping control system that consists of an electronic control module capable of class 2 serial data communication, a steering column power assembly with positioning motors and sensors, and a steering column control switch.
3. The multi-function lever provides for the control of the headlamp high beams, and the windshield washer and wiper.

Ignition Lock Cylinder Control Actuator

The vehicle it is equipped with a floor mounted console gear shifter, and has a ignition lock cylinder control actuator system in the steering column as an added safety feature. The ignition lock cylinder control actuator systems purpose is to prevent the steering wheel from being locked when the transmission is in gear and the vehicle may still be moving. The ignition lock cylinder control actuator system consists of the BCM, the lock cylinder relay, and the ignition lock cylinder control actuator. The ignition lock cylinder control actuator contains a pin that is spring loaded out to mechanically prevent the ignition key cylinder from being turned to the lock position when vehicle speed is above 5 mph for 15 seconds and the transmission is not in the Park position. If vehicle power is lost, and/or the transmission is not in the Park position the operator will not be able to turn the ignition key to the lock position and will not be able to remove the ignition key from the column. For situations where the vehicle must be towed, the system can be overridden by pressing a release button that is reached through an access hole located on the under side of the steering column. First, remove the black plug covering the hole.

Heated Steering Wheel

The heated steering wheel system consists of a heated steering wheel, a heated steering wheel switch, and a steering wheel heat module. The heated steering wheel includes non-serviceable heating elements and a temperature sensor. The heating elements and sensor are located in the left and right sides of the rim of the steering wheel. The heated steering wheel switch is located in the left steering wheel control switch assembly. The steering wheel heat module is located at the top of the steering wheel center hub. When the switch is pressed, the switch signal circuit is grounded and the heat module turns the heated steering wheel on. The system then remains on until the customer turns it off. The wheels normal operating temperature is 32°C (89.6°F). The wheel takes approximately 3 to 4 minutes to reach the normal operating temperature. The wheel will take longer to heat up if the vehicle temperature is below -21°C (-5.8°F). The built-in temperature sensor provides input to the controller to limit the temperature to the normal operating temperature. The wheel will not operate if the vehicle temperature is at or above 32°C (89.6°F).

Special Tools

Illustration Tool Number/Description J 1859-A Steering Wheel Puller J 21854-01 Pivot Pin Remover J 23653-SIR Steering Column Lock Plate Compressor J 42137 Cam Orientation Plate Adapter J 42578 Steering Wheel Puller Legs

Scheme 28

Scheme 29

See also:
• Diagnostic System Check - Vehicle
• Strategy Based Diagnosis
• Diagnostic Procedure Instructions
• Component Connector End Views
• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs
• Control Module References
• Diagnostic Repair Verification
• Checking Aftermarket Accessories
• Ignition Can/Cannot Be Turned Off with Transmission in Any Gear
• Ignition Key Cannot Be Removed from the Ignition Lock Cylinder (Floor Shift)
• Ignition Key Cannot Turn or Sticks in Any Position
• Waterleak Test Preparation
• Steering Wheel Control Switch Assembly Replacement
• Inflatable Restraint Steering Wheel Module Coil Replacement
• Automatic Transmission Range Selector Cable Replacement - Column
• Range Selector Lever Cable Adjustment
• Power Vacuum Brake Booster Replacement
• Fastener Notice
• Driver Knee Bolster Replacement
• Automatic Transmission Shift Lock Actuator Replacement
• Theft Deterrent Module Replacement
• Ignition Lock Cylinder Case Bracket Replacement
• Steering Gear Replacement
• DTC B2850
• Noise in Steering Column
• High Shift Effort
• Looseness in Steering Column
• Fastener Tightening Specifications
• Special Tools