Steering Wheel & Steering Column Cadillac CTS II

Fastener Tightening Specifications

Scheme 1

Scheme 2

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

Diagnostic Instructions

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__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 tilt or telescope switch input for more than 30 consecutive seconds after the tilt or telescope motor movement has stopped.

Action Taken When the DTC Sets

1. The tilt or 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 A current DTC will clear when the failed switch input is no longer active.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 tilt or telescope switch may cause a 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/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

Circuit/System Verification

Ignition ON, view the appropriate scan tool Tilt or Telescope Switch parameter while cycling the appropriate switch between states.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 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 with the scan tool that the appropriate switch parameter is Inactive. If not the specified value, test the appropriate signal circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Install a 3A fused jumper wire between the appropriate circuit terminal 1, 2, 3, or 5 and terminal 4. Verify with the scan tool that the appropriate 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 terminals 1, 2, 3, and 5 with the switch in the neutral position: If less than the specified range, replace the tilt/telescope switch.
3. Test for less than 1 ohm between terminal 4 and terminals 1, 2, 3, and 5 with the switch in each appropriate position. If greater than the specified value, replace the tilt/telescope switch.

Repair Procedures

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Column Replacement»(/cadillac/cts/ii-2007-2014/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Control Module References»(/cadillac/cts/ii-2007-2014/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/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__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 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.

Ignition ON

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.

Steering column tilt operations are suspended.

1. A current DTC will clear when the malfunction is no longer present
2. A history DTC will clear after 50 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/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

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.

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.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Column Replacement»(/cadillac/cts/ii-2007-2014/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Control Module References»(/cadillac/cts/ii-2007-2014/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/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__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.

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/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__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/cts/ii-2007-2014/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 and Column

Review the system description and operation in order to familiarize yourself with the system functions. Refer to Steering Wheel and Column Description and Operation .

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the steering wheel and column.
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Symptoms List

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

1. «Steering Column Tilt/Telescoping Malfunction»(/cadillac/cts/ii-2007-2014/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Ignition Key Cannot Be Removed from the Ignition Lock Cylinder»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__ignition-key-cannot-be-removed-from)
3. «Ignition Key Cannot Turn or Sticks in Any Position»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__ignition-key-cannot-turn-or-sticks)
4. «Noise in Steering Column»(/cadillac/cts/ii-2007-2014/remont/steering-column-switches/#steering-wheel-steering-column__noise-in-steering-column)
5. «Looseness in Steering Column»(/cadillac/cts/ii-2007-2014/remont/steering-column-switches/#steering-wheel-steering-column__looseness-in-steering-column)
6. «Steering Column Tilt Function Inoperative»(/cadillac/cts/ii-2007-2014/remont/steering-column-switches/#steering-wheel-steering-column__steering-column-tilt-function-inoperative)
7. «Ignition Can/Cannot Be Turned Off with Transmission in Any Gear (without RPO Y41)»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures) or «Ignition Can/Cannot Be Turned Off with Transmission in Any Gear (with RPO Y41)»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach
3. «Diagnostic Procedure Instructions»(/cadillac/cts/ii-2007-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__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/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/cts/ii-2007-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__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.
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.
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.

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 1 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 2 Tilt Down Switch - signal circuit terminal 6 Telescope Forward Switch - signal circuit terminal 3 Telescope Rearward Switch - signal circuit terminal 5 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 1. Verify the appropriate scan tool tilt/telescope switch parameter is Active. Tilt Up Switch - signal circuit terminal 2 Tilt Down Switch - signal circuit terminal 6 Telescope Forward Switch - signal circuit terminal 3 Telescope Rearward Switch - signal circuit terminal 5 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 tilt/telescope actuator.
2. Test for less than 2.0 ohms between the low reference circuit terminal B 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 C 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 appropriate signal circuit terminal A or D for a short to voltage. If the circuit tests normal, replace the MSM.
5. Install a 3A fused jumper wire between the appropriate signal circuit terminal A or D and the 5-volt reference circuit terminal C. 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 tilt/telescope actuator.
2. Connect a test lamp between the appropriate actuator control circuit terminals A and B or terminals C and D.
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 1 and signal terminal 5 B+ terminal 1 and signal terminal 6 B+ terminal 1 and signal terminal 2 B+ terminal 1 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 1 and the signal terminal 2 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 1 and the signal terminal 6 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 1 and the signal terminal 5 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 1 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 tilt/telescoping actuator.
2. Test for less than 2.0 ohms between the actuator control terminals A and B, C and D, and control terminal B. If greater than the specified range, replace the tilt/telescoping actuator.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Steering Column Replacement»(/cadillac/cts/ii-2007-2014/remont/steering-column-switches/#steering-wheel-steering-column)
2. «Control Module References»(/cadillac/cts/ii-2007-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for MSM replacement, setup, and programming

Steering Column Tilt Function Inoperative

Noise in Steering Column

Looseness in Steering Column

Removal Procedure

1. Remove the intermediate steering shaft bolt.
2. Disconnect the intermediate steering shaft from the upper intermediate steering shaft.
3. Remove the steering column. Refer to «Steering Column Replacement»(/cadillac/cts/ii-2007-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
4. Remove the upper intermediate steering shaft from the vehicle.

Installation Procedure

1. Install the upper intermediate steering shaft to the vehicle.
2. Install the steering column. Refer to «Steering Column Replacement»(/cadillac/cts/ii-2007-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
3. Connect the intermediate steering shaft to the upper intermediate steering shaft.
4. Install the intermediate steering shaft bolt. Tighten: Tighten the bolt to 33 N.m (24 lb ft).

1. Remove the intermediate steering shaft bolt (3).
2. Remove the lower intermediate steering shaft bolt (4).
3. Disconnect the lower intermediate steering shaft (1) from the steering gear (5) and the intermediate steering shaft (2).
4. Remove the lower intermediate steering shaft from the vehicle.

1. Position the lower intermediate steering shaft to the vehicle.
2. Connect the lower intermediate steering shaft (1) to the steering gear (5) and the intermediate steering shaft (2).
3. Install the lower intermediate steering shaft bolt (4). Tighten: Tighten the bolt to 48 N.m (35 lb ft).
4. Install the intermediate steering shaft bolt (3). Tighten: Tighten the bolt to 33 N.m (24 lb ft).

1. Remove the intermediate steering shaft bolt.
2. Remove the lower intermediate steering shaft bolt.
3. Disconnect the lower intermediate steering shaft from the steering gear.
4. Disconnect the intermediate steering shaft from the upper intermediate steering shaft.
5. Remove the lower intermediate steering shaft from the vehicle with the intermediate steering shaft still connected.
6. Remove the intermediate steering shaft bolt.
7. Disconnect the intermediate steering shaft from the lower intermediate steering shaft.

1. Connect the intermediate steering shaft to the lower intermediate steering shaft.
2. Install the intermediate steering shaft bolt at the lower intermediate steering shaft. Tighten: Tighten the bolt to 33 N.m (24 lb ft).
3. Position the lower intermediate steering shaft to the vehicle with the intermediate steering shaft connected.
4. Connect the intermediate steering shaft to the upper intermediate steering shaft.
5. Install the intermediate steering shaft bolt at the upper intermediate steering shaft. Tighten: Tighten the bolt to 33 N.m (24 lb ft).
6. Connect the lower intermediate steering shaft to the steering gear.
7. Install the lower intermediate steering shaft bolt. Tighten: Tighten the bolt to 48 N.m (35 lb ft).

Inspection Procedure

1. Inspect the capsules on the steering column bracket assembly. Verify that the capsules are seated securely in the bracket slots and inspect the capsules for any loose conditions when pushed or pulled by hand. If the capsules are not secure, perform one of the following procedures: If the bracket is bolted to the jacket assembly, replace the bracket. If the bracket is welded to the jacket assembly, replace the jacket assembly.
2. Inspect the jacket assembly for collapse by measuring the distance from the lower edge of the upper jacket to a defined point on the lower jacket. If measured dimensions (A), are not within specifications (100 mm), install a steering column.

Scheme 3

Scheme 4

Tilt/Telescoping Soft Stops

After replacement of the memory seat module (MSM), 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 MSM, the tilt actuator or telescope actuators are 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 Memory Seat Module.
4. Select Special Functions.
5. Select Driver Seat.
6. Select Learn Column Soft Stops.
7. Follow the scan tool on-screen instructions.

Scheme 5

Scheme 6

Scheme 7

Scheme 8

Scheme 9

Scheme 10

Scheme 11

1. LOCK the steering column and verify the front wheels are in the straight ahead position.
2. Disable the supplemental inflatable restraint (SIR) system. Refer to «SIR Disabling and Enabling»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system__sir-disabling-and-enabling) .
3. Remove the steering column shroud. Refer to «Steering Column Shroud Replacement (With Key Release Lever Knob)»(/cadillac/cts/ii-2007-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Shroud Replacement (Without Key Release Lever Knob)»(/cadillac/cts/ii-2007-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
4. Remove the driver knee bolster bracket. Refer to «Driver Knee Bolster Bracket Replacement (Left Hand Drive)»(/cadillac/cts/ii-2007-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) or «Driver Knee Bolster Bracket Replacement (Right Hand Drive)»(/cadillac/cts/ii-2007-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .
5. Disconnect any electrical connectors as necessary.
6. Remove the upper intermediate steering shaft bolt (1).
7. Disconnect the upper intermediate steering shaft (2) from the steering column. Do not pull the intermediate steering shaft lower seal (3) away from the body panel.
8. Remove the steering column nuts (2) and the steering column bolts (1).
9. Remove the steering column from the vehicle.
10. Transfer any parts as necessary.

1. If you are installing a NEW steering column assembly (1) or a steering column with a NEW steering column tilt wheel actuator motor (4), use a flat blade pry tool in order to GENTLY remove the star washer (2) and the plastic bracket (3) from the tilt wheel actuator motor.
2. Install the steering column to the vehicle and start the steering column nuts (3, 4) and bolts (1, 2) by hand using the following sequence: Position the steering column in place. Hand start the steering column nuts (3, 4). Hand start the steering column bolts (1, 2). Hold the steering column flush against the instrument panel carrier. Hand tighten steering column nut (3). Hand tighten steering column nut (4). Hand tighten steering column bolt (1). Hand tighten steering column bolt (2).
3. Tighten the steering column nuts (3, 4) and bolts (1, 2) in the following sequence: Tighten the steering column nut (3) to 27 N.m (20 lb ft). Tighten the steering column nut (4) to 27 N.m (20 lb ft). Tighten the steering column bolt (1) to 27 N.m (20 lb ft). Tighten the steering column bolt (2) to 27 N.m (20 lb ft).
4. Install the upper intermediate steering shaft (2) and upper intermediate steering shaft bolt (1). Make sure the intermediate steering shaft upper seal (3) is seated correctly. Tighten the bolt to 48 N.m (35 lb ft).
5. Connect all electrical connectors as needed.
6. Install the driver knee bolster bracket. Refer to «Driver Knee Bolster Bracket Replacement (Left Hand Drive)»(/cadillac/cts/ii-2007-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) or «Driver Knee Bolster Bracket Replacement (Right Hand Drive)»(/cadillac/cts/ii-2007-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .
7. Install the steering column shroud. Refer to «Steering Column Shroud Replacement (With Key Release Lever Knob)»(/cadillac/cts/ii-2007-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Shroud Replacement (Without Key Release Lever Knob)»(/cadillac/cts/ii-2007-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
8. Enable the SIR. Refer to «SIR Disabling and Enabling»(/cadillac/cts/ii-2007-2014/remont/airbag/#supplemental-inflatable-restraint-system__sir-disabling-and-enabling) .

Scheme 12

Steering Wheel and Column Description and Operation

The steering wheel and column has 4 primary functions

1. Heated Steering Wheel
2. Vehicle steering
3. Vehicle security
4. Driver convenience
5. Driver safety

Heated Steering Wheel

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 heated steering wheel control module supplies ground to the indicator lamp and supplies voltage to the heating elements, which are internal to the steering wheel. The heated steering wheel temperature is monitored through an internal temperature sensor. When the steering wheel reaches operating temperature the module will cycle the voltage on and off to maintain the operating temperature.

Vehicle Steering

The steering wheel is the first link between the driver and the vehicle. The steering wheel is fastened to a steering shaft within the column. At the lower end of the column, the intermediate shaft connects the column to the steering gear.

Vehicle Security, Found on Some Vehicle Models

Theft deterrent components are mounted and designed into the steering column. The following components allow the column to be locked in order to minimize theft

1. The ignition switch-location varies
2. The steering column lock-content varies
3. The ignition cylinder-location varies
4. The theft deterrent module-location varies

Driver Convenience

The steering wheel and column may also have driver controls attached for convenience and comfort. The following controls may be mounted on or near the steering wheel or column.

1. The turn signal switch
2. The hazard switch
3. The headlamp dimmer switch
4. The wiper/washer switch
5. The horn pad/cruise control switch
6. The redundant radio/entertainment system controls
7. The manual/power tilt or tilt/telescoping functions
8. The power pedal adjustment control switch
9. The navigation/OnStar® features
10. The HVAC controls

Driver Safety

The steering wheel and column has safety features to protect the driver. The following components may be mounted on or near the steering column

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 memory seat module (MSM) 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 MSM. The MSM 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 MSM receives an input to move the column up, the MSM supplies battery positive voltage and ground to the tilt motor in order to move the column up. When the MSM receives a column down input, the MSM 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 MSM to store column positions in memory and to return the column to the stored memory positions. The MSM 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 MSM 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 MSM 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 MSM 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 MSM stores personalization information. The driver information center (DIC) is used to enable and disable the personalization feature in the MSM. A Class 2 message is sent to the MSM, by the DIC, which specifies that the MSM 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 MSM. The MSM 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 MSM indicating which driver memory setting has been selected. The MSM 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 MSM 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.

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).

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
• Ignition Key Cannot Be Removed from the Ignition Lock Cylinder
• Ignition Key Cannot Turn or Sticks in Any Position
• Ignition Can/Cannot Be Turned Off with Transmission in Any Gear (without RPO Y41)
• Steering Wheel Inflatable Restraint Module Coil Replacement
• Fastener Caution
• Steering Column Key Release Lever Knob Replacement
• SIR Disabling and Enabling
• Driver Knee Bolster Bracket Replacement (Left Hand Drive)
• Steering Angle Sensor Centering
• DTC B2850, B2855, B2870, or B2875
• Steering Wheel and Column Description and Operation
• Noise in Steering Column
• Looseness in Steering Column
• Steering Column Tilt Function Inoperative
• Symptoms - Steering Wheel and Column
• Fastener Tightening Specifications