GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2008 🢒 SLS 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Steering Column Tilt/Telescoping Inoperative

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. Circuit equipped with MEM T&T 10A fuse in this step.

  2. Circuit equipped with MEM T&T 30A fuse in this step.

  3. If the motor current of tilt or telescopic driver displayed on the scan tool is below 0A or greater than 10A, review proper drawings associated with the inoperative driver.

  4. Circuit equipped with MEM T&T 30A fuse in this step.

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 tilt/telescopic steering column without any movement

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Operate the tilt/telescoping system.

Does the tilt/telescoping motor operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

Install a scan tool.

Does scan tool communicate with the memory seat module (MSM)?

Go to Step 4

Go to Step 5

4
  1. Turn ON the ignition, with the engine OFF.
  2. When the tilt/telescoping manual switch moves up/down/in/out from the neutral position, observe the tilt/telescoping switch parameter on tilt/telescoping module data display list.

Did the parameter change as expected?

Go to Step 7

Go to Step 13

5

Test B+ voltage circuit of Seat Module for an open or short to ground. Refer to Circuit Testing and Wiring Repairs.

Did you find and correct the condition?

Go to Step 21

Go to Step 6

6

Test the ground circuit of the memory seat module for an open.

Refer to Circuit Testing and Wiring Repairs.

Did you find and correct the conditions?

Go to Step 21

Go to Step 20

7

Test the fuse for a open.

Is the Fuse OK?

Go to Step 8

Go to Step 9

8
  1. Turn OFF the ignition.
  2. Disconnect the memory seat module connector which contains battery positive circuit and ground circuit.
  3. Test the battery positive circuit for an open or high resistance.

Did you find and correct the condition?

Go to Step 21

Go to Step 15

9
  1. Turn OFF the ignition.
  2. Disconnect the memory seat module connector which contains battery positive circuit and ground circuit.
  3. Test the battery positive circuit and ground circuit.

Did you find and correct the condition?

Go to Step 21

Go to Step 10

10
  1. Reconnect the memory seat module connector which contains battery positive circuit and ground circuit.
  2. Disconnect the tilt and telescoping drive harness connector from the MSM.
  3. Replace the fuse.
  4. Turn the ignition ON.
  5. Using the tilt/telescopic steering column switch, operate the power tilt telescopic to various positions.

Is the fuse open again?

Go to Step 20

Go to Step 11

11
  1. Reconnect the tilt actuator harness connector.
  2. Using the power tilt/telescopic steering column switch, operate the power tilt telescopic to various positions.

Is the fuse open again?

Go to Step 16

Go to Step 12

12
  1. Reconnect the telescoping driver harness connector.
  2. Using the power tilt/telescopic steering column switch, operate the power tilt telescopic to various positions.

Is the fuse open again?

Go to Step 17

Go to Testing for Intermittent Conditions and Poor Connections and Connector Repairs

13

Disconnect the tilt/telescoping switch on MSM. Using a test light, test the switch on MSM for ground.

Does the test lamp illuminate?

Go to Step 14

Go to Step 21

14

Inspect the tilt/telescopic steering column switch for poor connections or overtightens. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs.

Did you find and correct the condition?

Go to Step 21

Go to Step 18

15

Inspect the memory seat module harness connector which contains battery positive circuit and ground circuit for poor connections or overtightens. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs.

Did you find and correct the condition?

Go to Step 21

Go to Step 20

16

Check the tilt driver circuit for a short to ground.

Did yo find and correct the condition?

Go to Step 21

Go to Step 19

17

Check the telescoping driver circuit for a short to ground.

Did you find and correct the condition?

Go to Step 21

Go to Step 19

18

Replace the tilt/telescopic steering column switch.

Did you complete the replacement?

Go to Step 21

--

19

Replace the steering column driver causing an open fuse. Refer to Telescope Actuator Assembly Replacement.

Did you complete the replacement?

Go to Step 21

--

20

Important: Perform the set up procedure for the memory seat module (MSM).

Replace the memory seat module. Refer to Front Seat Control Module Replacement .

Did you wide complete the replacement?

Go to Step 21

--

21

Calibrate the steering column. Refer to Telescoping Steering Column Calibration.

Did you complete the operation?

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