Steering Wheel and Column Schematic Icons
Steering Wheel and Column Schematic Icons Icon Icon Definition CAUTION: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling Zones. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs
Scheme 1
Scheme 2
Scheme 3
Scheme 4
| Callout | Component Name |
|---|---|
| 1 | Upper Trim Cover |
| 2 | Lower Trim Cover |
| 3 | Steering Column Closeout Trim |
| 4 | Flanged Prevailing Torque Nut |
| 5 | Retaining Ring |
| 6 | SIR Coil |
| 7 | Wave Washer |
| 8 | Bearing Retainer |
| 9 | Cam Orientation Plate |
| 10 | Turn Signal Cancel Cam |
| 11 | Upper Bearing Spring |
| 12 | Upper Bearing Inner Race Seat |
| 13 | Inner Race |
| 14 | Switch Mounting Bracket |
| 15 | Turn Signal and Multifunction Switch Assembly |
| 16 | Steering Column Tilt Head Assembly |
| 17 | Wire Strap |
| 18 | Spring Guide |
| 19 | Tilt Spring |
| 20 | Pin |
| 21 | Pan Head Tapping Screws |
| 22 | Wire Straps |
| 23 | Pan Head Tapping Screws |
| 24 | Window Washer and Wiper Switch Assembly |
| 25 | Wire Straps |
| 26 | Theft Deterrent |
| 27 | Ignition Lock Cylinder Case |
| 28 | Race and Upper Shaft |
| 29 | Centering Sphere |
| 30 | Joint Preload Spring |
| 31 | Lower Steering Shaft |
| 32 | Pivot Pins |
| 33 | Wire Strap |
| 34 | Steering Column Jacket Assembly |
| 35 | Steering Column Position Sensor |
| 36 | Sensor Clip |
| 37 | Sensor Seal |
| 38 | Boot |
| 39 | Bolt Retainer |
| 40 | Pinch Bolt |
| 41 | Intermediate Shaft Assembly |
Scheme 5
| Callout | Component Name |
|---|---|
| 1 | Steering Wheel |
| 2 | Heated Steering Wheel Module (KA9) |
Scheme 6
| Callout | Component Name |
|---|---|
| 1 | Telescoping Drive Wheel |
| 2 | Steering Angle Sensor |
| 3 | Turn Signal/Multifunction Switch |
| 4 | Windshield Wiper/Washer Switch Assembly |
| 5 | Steering Wheel Controls Seek Button |
| 6 | Steering Wheel Controls Volume Button |
| 7 | C277 |
| 8 | Horn Switch Connector |
| 9 | Steering Wheel Controls Mute/Source Button -or- Heated Steering Wheel Button (KA1) |
| 10 | Steering Wheel Controls Voice/Preset Button |
| 11 | Heated Steering Wheel |
| 12 | Tilt/Telescope Switch |
| 13 | Tilt Actuator |
| 14 | C202 |
| 15 | Steering Column Lock Control Module (UA2) |
Test Description
The numbers below refer to the step numbers on the diagnostic table.
- 2: During the steering column electronic lock operation, listen for an audible click. Repeat the commands as necessary.
- 3: This test determines if the steering column electronic lock feedback circuit is operating properly.
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Column/Ignition Lock Schematics Connector End View Reference: Steering Wheel and Column Connector End Views | ||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information | |
| 2 | Vehicle in Park Operate the column lock system by cycling the ignition. Does the column lock with each cycle of the ignition? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 | |
| 3 | Turn OFF the ignition. Measure the resistance between the steering column lock signal and ground circuits. Does the resistance measure within the specification? | 492-482 ohms | Go to Step 5 | Go to Step 4 |
| 4 | Test the steering column lock signal circuit for an open, a short to ground, or short to voltage. Refer to Circuit Testing in Wiring Systems. Did you find the condition? | Go to Step 8 | Go to Step 6 | |
| 5 | Inspect for poor connections at the harness connector of the steering column lock control module (SCLCM). Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition? | Go to Step 8 | Go to Step 7 | |
| 6 | Replace the steering wheel theft deterrent lock. Did you complete the replacement? | Go to Step 8 | ||
| 7 | IMPORTANT: Perform the setup procedure for the SCLCM. Replace the SCLCM. Perform the setup procedure for the SCLCM. Refer to Steering Column Lock Control Module Programming and Setup . Did you complete the replacement? | Go to Step 8 | ||
| 8 | Clear the DTCs with a scan tool. Operate the vehicle within the Conditions for Running the DTC. Does DTC 2515 reset? | Go to Step 2 | System OK | |
| IMPORTANT |
|---|
| Perform the setup procedure for the SCLCM. |
DTC B2515
The numbers below refer to the step numbers on the diagnostic table.
- 3: This step tests for the proper operation of the circuit in the high voltage range.
- 4: This step tests for the proper operation of the circuit in the low voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to voltage.
- 5: This step tests for a short to ground in the 5-volt reference circuit.
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Tilt/Telescoping Steering Column Schematics Connector End View Reference: Steering Wheel and Column Connector End Views | ||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information | |
| 2 | Turn ON the ignition, with the engine OFF. Observe the Column Position Feedback data parameter in the DPM column info list with a scan tool. Does the scan tool indicate that the Column Position Feedback data parameter is within the specified range? | 0.25-4.75 V | Go to Diagnostic Aids | Go to Step 3 |
| 3 | Turn OFF the ignition. Disconnect the telescoping sensor. Turn ON the ignition, with the engine OFF. Observe the Column Position Feedback data parameter with the scan tool. Does the scan tool indicate that the Column Position Feedback data parameter is greater than the specified value? | 4.75 V | Go to Step 4 | Go to Step 8 |
| 4 | Turn OFF the ignition. Connect a 3-amp fused jumper wire between the signal circuit of the telescoping sensor and the low reference circuit of the telescoping sensor. Turn ON the ignition, with the engine OFF. Observe the Column Position Feedback data parameter with the scan tool. Does the scan tool indicate that the Column Position Feedback data parameter is less than the specified value? | 0.25 V | Go to Step 5 | Go to Step 9 |
| 5 | Turn OFF the ignition Disconnect the fused jumper wire. Connect a 3-amp fused jumper wire between the 5-volt reference circuit of the telescoping sensor and the signal circuit of the telescoping sensor. Turn ON the ignition, with the engine OFF. Observe the Column Position Feedback data parameter with the scan tool. Does the scan tool indicate that the Column Position Feedback data parameter is greater than the specified value? | 4.75 V | Go to Step 7 | Go to Step 6 |
| 6 | Test the 5-volt reference circuit of the telescoping sensor for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 15 | Go to Step 12 | |
| 7 | Test the 5-volt reference circuit of the telescoping sensor for a short to voltage, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 15 | Go to Step 11 | |
| 8 | Test the signal circuit of the telescoping sensor for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 15 | Go to Step 12 | |
| 9 | Test the signal circuit of the telescoping sensor for a short to voltage, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 15 | Go to Step 10 | |
| 10 | Test the low reference circuit of the telescoping sensor for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 15 | Go to Step 12 | |
| 11 | Inspect for poor connections at the harness connector of the telescoping sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 15 | Go to Step 13 | |
| 12 | Inspect for poor connections at the harness connector of the DPM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 15 | Go to Step 14 | |
| 13 | Replace the telescoping sensor. Refer to cell-link!-67712. Did you complete the replacement? | Go to Step 15 | ||
| 14 | Replace and setup the DPM. Refer to Control Module Setup (SCLCM Setup) . Did you complete the replacement and the setup? | Go to Step 15 | ||
| 15 | Clear the DTCs with the scan tool. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does DTC B2860 reset? | Go to Step 2 | System OK | |
DTC B2860
The numbers below refer to the step numbers on the diagnostic table.
- 5: This step refers to the circuit with the MEM T&T 10A fuse.
- 7: This step refers to the circuit with the PWR T&T 30A fuse.
- 8: If either the tilt actuator or the telescope actuator displays Motor Current on the scan tool Data Display, as less than 0 amps and/or more than 10 amps in this step, go to the applicable chart for that actuator being inoperative.
- 9: This step refers to the circuit with the PWR T&T 30A fuse.
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Tilt/Telescoping Steering Column Schematics Connector End View Reference: Steering Wheel and Column Connector End Views DEFINITION: This test applies to a tilt/telescoping steering column that has no movement at all. | |||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 | Operate the Tilt/Telescope System. Does the Tilt/Telescope operate normally? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 | Install a scan tool. Does the scan tool communicate with the memory seat module (MSM)? | Go to Step 4 | Go to Step 5 |
| 4 | Turn ON the ignition, with the engine OFF. Observe the Telescope/Tilt Switch parameter in the Tilt/Telescope Module Data Display list while activating the tilt/telescoping manual switch from the Idle position to the Up, Down, In, and Out positions. Do the parameters change state as expected? | Go to Step 7 | Go to Step 13 |
| 5 | Test the B+ voltage circuit of the memory seat module (MSM) for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 21 | Go to Step 6 |
| 6 | Test the ground circuit of the MSM for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 21 | Go to Step 20 |
| 7 | Test the fuse for an open. Is the fuse OK? | Go to Step 8 | Go to Step 9 |
| 8 | Turn OFF the ignition. Disconnect the memory seat module (MSM) connector that contains both battery positive circuits and the ground circuit. Test the battery positive circuit for an open or a high resistance. Did you find and correct the condition? | Go to Step 21 | Go to Step 15 |
| 9 | Turn OFF the ignition. Disconnect the memory seat module (MSM) connector that contains both battery positive circuits and the ground circuit. Test the battery positive circuit for a short to ground or an open. Did you find and correct the condition? | Go to Step 21 | Go to Step 10 |
| 10 | Reconnect the memory seat module (MSM) connector that contains both battery positive circuits and the ground circuits. Disconnect both the tilt actuator and the telescoping actuator harness connectors from the MSM. Replace the fuse. Turn ignition ON. Using the tilt/telescoping steering column switch, operate the power tilt and telescoping to all positions. Did the fuse open again? | Go to Step 20 | Go to Step 11 |
| 11 | Reconnect the tilt actuator harness connector. Using the power tilt/telescoping steering column switch, operate the power tilt and telescoping to all positions. Did the fuse open again? | Go to Step 16 | Go to Step 12 |
| 12 | Reconnect the actuator harness connector telescope. Using the power tilt/telescoping steering column switch, operate the power tilt and telescoping to all positions. Did the fuse open again? | Go to Step 17 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
| 13 | Disconnect the tilt/telescope switch at the MSM. Test the switch ground at the MSM with a test lamp. Does the test lamp illuminate? | Go to Step 14 | Go to Step 20 |
| 14 | Inspect for poor connections/terminal tension at the tilt/telescoping steering column switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 21 | Go to Step 18 |
| 15 | Inspect for poor connections/terminal tension at the harness connector of the memory seat module (MSM) connector that contains both battery positive circuits and the ground circuit. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 21 | Go to Step 20 |
| 16 | Inspect for a short to ground in the tilt actuator circuits. Did you find and correct the condition? | Go to Step 21 | Go to Step 19 |
| 17 | Inspect for a short to ground in the telescoping actuator circuits. Did you find and correct the condition? | Go to Step 21 | Go to Step 19 |
| 18 | Replace the tilt/telescoping steering column switch. Did you complete the replacement? | Go to Step 21 | |
| 19 | Replace the steering column actuator that caused the fuse to open. Refer to Telescope Actuator Assembly Replacement . Did you complete the replacement? | Go to Step 21 | |
| 20 | IMPORTANT: Perform the set up procedure for the MSM. Replace the MSM. Refer to Frame, Trim Cover, Heater, Pad, Blower, Power Adjuster Control Module Replacement - Front Seat Cushion in Seats.Did you complete the replacement? | Go to Step 21 | |
| 21 | Perform the steering column calibration. Refer to Telescoping Steering Column Calibration . Did you complete the action? | Go to Step 22 | |
| 22 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
| IMPORTANT |
|---|
| Perform the set up procedure for the MSM. |
Steering Column Tilt/Telescoping Inoperative
Tilt/Telescoping Switch Operation
The tilt/telescoping steering column has a 4-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
- Press the switch up to tilt the column up.
- Press the switch down to tilt the column down.
- Press the switch forward and the column moves toward the front of the vehicle.
- Press the switch rearward and the column moves toward the rear of the vehicle.
The instrument panel module (IPM) 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 IPM. The IPM receives an input and sends a GMLAN message to the driver position module (DPM) which actuates the corresponding column motor.
Tilt/Telescoping Description
The energy absorbing and locking steering column includes 3 important features in addition to the steering function.
- 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.
- The steering column has a tilt/telescoping control system that consists of a steering column power assembly with positioning motors and sensors, and a steering column control switch.
- The multi-function lever provides for the control of the headlamp high beams, and the windshield washer and wiper.