GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 Silhouette Ext. 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Radio Switch Illumination Inoperative

Step

Action

Value(s)

Yes

No

1

Inspect the SWC BACKLIGHT fuse.

Is the fuse open?

--

Go to Step 2

Go to Step 3

2
  1. Repair a short to ground in CKT 1244.
  2. Inspect the system.

Is the symptom still present?

--

Go to Step 3

Go to Interior Lights Dimming System Check

3

Use a test lamp in order to backprobe connector C205 between terminal B to ground.

Does the test lamp light?

--

Go to Step 5

Go to Step 4

4
  1. Repair the following conditions in CKT 1244 between the fuse block terminal J10 and C205 terminal B.
    2. • A poor connection
    • An open
  2. Inspect the system.

Is the symptom still present?

--

Go to Step 5

Go to Interior Lights Dimming System Check

5

Use a test lamp in order to backprobe connector C205 between terminal B and terminal D.

Does the test lamp light?

--

Go to Step 7

Go to Step 6

6
  1. Repair the following conditions in CKT 1450 between C205 terminal D and G200:
    2. • A poor connection
    • An open
  2. Inspect the system.

Is the symptom still present?

--

Go to Step 7

Go to Interior Lights Dimming System Check

7
  1. Disconnect the steering wheel radio control switches
  2. Use a test lamp in order to backprobe the inflatable restraint steering wheel module coil terminal B to terminal D.

Did the test lamp light?

--

Go to Step 9

Go To Step 8

8
  1. Replace the inflatable restraint steering wheel module coil. Refer to Inflatable Restraint Steering Wheel Module Replacement in SIR.
  2. Inspect the system.

Is the repair complete?

--

Go to Interior Lights Dimming System Check

--

9
  1. Replace the bulbs in the radio control switches.
  2. Inspect the system.

Is the repair complete?

--

Go to Interior Lights Dimming System Check

--