GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1999 🢒 Seville 🢒 Steering 🢒 Steering Wheel and Column - Tilt 🢒 Steering Column Tilt/Telescoping Inoperative

Steering Column Tilt/Telescoping Inoperative LHD

Step

Action

Value(s)

Yes

No

1

Was the Tilt/Telescoping Steering Column System Check performed?

--

Go to Step 2

Go to Tilt/Telescoping Steering Column System Check

2
  1. Turn the ignition switch to OFF.
  2. Disconnect the steering column tilt/telescoping module (TTM) connector C1.
  3. Connect a DDM set to DC volts scale between the TTM connector C1 terminal E and ground.

Refer to Measuring Voltage in Wiring Systems.

Is the measured voltage within the range shown?

10--15 V

Go to Step 4

Go to Step 3

3

Repair open in CKT 2840 (ORN).

Refer to Wiring Repairs in Wiring Systems.

Is the circuit repair complete?

--

Go to Step 11

--

4

Connect a DMM between the TTM connector C1 terminal D and ground.

Refer to Measuring Voltage in Wiring Systesm.

Is the measured voltage within the range shown?

10--15 V

Go to Step 6

Go to Step 5

5

Repair open in CKT 2940 (ORN).

Refer to Wiring Repairs in Wiring Systems.

Is the circuit repair complete?

--

Go to Step 11

--

6

Connect a DDM between the TTM connector C1 terminal C and battery positive voltage (B+).

Refer to Measuring Voltage in Wiring Systems.

Is the measured voltage within the range shown?

10--15 V

Go to Step 10

Go to Step 7

7

Connect a DDM between ground splice pack G200 terminal J and battery positive voltage (B+).

Refer to Measuring Voltage in Wiring Systems.

Is the measured voltage within the range shown?

10--15 V

Go to Step 8

Go to Step 9

8

Repair open CKT 350 (BLK).

Refer to Measuring Voltage in Wiring Systems.

Is the circuit repair complete?

--

Go to Step 11

--

9

Check that ground terminal G200 is clean and tight. If OK, replace ground splice pack G200.

Is the replacement complete?

--

Go to Step 11

--

10
  1. Check the steering column tilt/telescoping module (TTM) connector C1 for poor terminal contact.
  2. If OK, replace the TTM. Refer to Tilt Actuator Assembly Replacement - On Vehicle and Telescope Actuator Assembly Replacement - On Vehicle .
  3. After replacement, reset the soft stops. Refer to Steering Column Control Module Programming .

Is the replacement complete?

--

Go to Step 11

--

11
  1. Make sure any components removed during diagnosis are installed in place and that all connectors are connected.
  2. Repeat the system check.Refer to Tilt/Telescoping Steering Column Diagnostic System Check .

Is the system check complete?

--

System OK

--

Steering Column Tilt/Telescoping Inoperative RHD

Step

Action

Value(s)

Yes

No

1

Was the Tilt/Telescoping Steering Column System Check performed?

--

Go to Step 2

Go to Tilt/Telescoping Steering Column System Check

2
  1. Turn ignition switch to OFF.
  2. Disconnect the steering column tilt/ telescoping module (TTM) connector C1.
  3. Connect a non powered test lamp between the TTM connector C1 terminal E and ground.

Refer to Troubleshooting with a Test Lamp in Wiring Systems.

Does the test lamp light?

--

Go to Step 4

Go to Step 3

3

Repair open in CKT 2840 (ORN).

Refer to Wiring Repairs in Wiring Systems.

Is the circuit repair complete?

--

Go to Step 11

--

4

Connect a non powered test lamp between the TTM connector C1 terminal D and ground.

Refer to Troubleshooting with a Test Lamp in Wiring Systems.

Does the test lamp light?

--

Go to Step 6

Go to Step 5

5

Repair open in CKT 2940 (ORN).

Refer to Wiring Repairs in Wiring Systems.

Is the circuit repair complete?

--

Go to Step 11

--

6

Connect a non powered test lamp between the TTM connector C1 terminal C and battery positive voltage (B+).

Refer to Troubleshooting with a Test Lamp in Wiring Systems.

Does the test lamp light?

--

Go to Step 10

Go to Step 7

7

Connect a non powered test lamp between ground splice pack G201 and battery positive voltage (B+).

Refer to Troubleshooting with a Test Lamp in Wiring Systems.

Does the test lamp light?

--

Go to Step 8

Go to Step 9

8

Repair open CKT 450 (BLK).

Refer to Wiring Repairs in Wiring Systems.

Is the circuit repair complete?

--

Go to Step 11

--

9

Check that ground terminal G201 is clean and tight. If OK, replace ground splice pack G201.

Is the replacement complete?

--

Go to Step 11

--

10
  1. Replace the steering wheel control switch assembly. Refer to Steering Wheel Control Switch Assembly Replacement .
  2. After replacement, reset the soft stops. Refer to Steering Column Control Module Programming .

Is the replacement complete?

--

Go to Step 11

--

11
  1. Make sure any components removed during diagnosis are installed in place and that all connectors are connected.
  2. Repeat the system check. Refer to Tilt/Telescoping Steering Column System Check .

Is the system check complete?

--

System OK

--