GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1999 🢒 Silhouette 🢒 Body and Accessories 🢒 Entertainment 🢒 Radio Inoperative with Steering Wheel Controls

Step

Action

Value(s)

Yes

No

1

Inspect the SWC ACCY fuse.

Is the fuse open?

--

Go to Step 2

Go to Step 3

2
  1. Repair a short to ground in CKT 443.
  2. Test the system again.

Is the repair complete?

--

Go to Steering Wheel Control System Check

--

3
  1. Connect a test lamp.
  2. Backprobe between connector C205 terminal A and ground.
  3. Turn the ignition switch to RUN.

Does the test lamp light?

--

Go to Step 5

Go to Step 4

4
  1. Repair a poor connection or an open in CKT 443.
  2. Test the system again.

Is the repair complete?

--

Go to Steering Wheel Control System Check

--

5
  1. Disconnect the steering column connector C205.
  2. Use a J 39200 in order to measure the resistance between the steering column harness connector C205 terminal A and terminal C.
  3. Press each of the steering wheel control buttons one at a time.
  4. Compare the approximate resistance values to the following list:
    5. • Volume up: 1270 ohms
    • Volume down: 1564 ohms
    • Play: 1912 ohms
    • Mute: 2387 ohms

Do all of the resistance values approximately equal the values listed above?

--

Go to Step 16

Go to Step 6

6
  1. Disconnect the right side radio control switch.
  2. Use a J 39200 in order to measure the resistance between the right side steering wheel control switch harness connector terminal A and terminal C.
  3. Press each of the steering wheel control buttons one at a time.
  4. Compare the approximate resistance values to the following list:
    5. • Volume up: 1270 ohms
    • Volume down: 1564 ohms
    • Play: 1912 ohms
    • Mute: 2387 ohms

Do all of the resistance values approximately equal the values listed above?

--

Go to Step 8

Go to Step 7

7
  1. Inspect for a poor connection at the steering wheel switch harness connector.
  2. If the connection is OK, replace the right side steering wheel radio control switch.
    3. • For Oldsmobile refer to Steering Wheel Control Switches Replacement
  3. Test the system again.

Is the repair complete?

--

Go to Steering Wheel Control System Check

--

8
  1. Inspect for a poor connection at the steering wheel switch harness connector.
  2. If the connection is OK, replace the inflatable restraint steering wheel module coil. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement in Supplement Inflatable Restraint (SIR) Tilt Steering Column.
  3. Test the system again.

Is the repair complete?

--

Go to Steering Wheel Control System Check

--

9
  1. Connect a test lamp.
  2. Backprobe between the radio harness connector C2 terminal 14 and ground.
  3. Turn the ignition switch to RUN.

Does the test lamp light?

--

Go to Step 10

Go to Step 11

10
  1. Repair a short to B+ in CKT 1796.
  2. Test the system again.

Is the repair complete?

--

Go to Steering Wheel Control System Check

--

11
  1. Connect a test lamp.
  2. Backprobe between B+ and the radio harness connector C2 terminal 14 and ground.
  3. Turn the ignition switch to RUN.

Does the test lamp light?

--

Go to Step 12

Go to Step 13

12
  1. Repair a short to ground in CKT 1796.
  2. Test the system again.

Is the repair complete?

--

Go to Steering Wheel Control System Check

--

13

Test for a poor connection or an open in CKT 1796 between the radio harness connector C2 terminal 14 and connector C205 terminal C.

Is there a poor connection or an open in the circuit?

--

Go to Step 14

Go to Step 15

14
  1. Repair a poor connection or an open in CKT 1796.
  2. Test the system again.

Is the repair complete?

--

Go to Steering Wheel Control System Check

--

15
  1. Repair a poor connection or an open in CKT 1796.
  2. Test the system again.

Is the repair complete?

--

Go to Steering Wheel Control System Check

--

16
  1. Disconnect the steering column connector C205.
  2. Use a J 39200 in order to measure the resistance between the steering column harness connector C205 terminal A and terminal C.
  3. Press each of the steering wheel control buttons one at a time.
  4. Compare the approximate resistance values to the following list:
    5. • Seek up: 3102 ohms
    • Seek down: 4282 ohms
    • Scan: 6652 ohms
    • AM/FM 13632 ohms

Do all of the resistance values approximately equal the values listed above?

--

Go to Step 9

Go to Step 17

17
  1. Disconnect the left side radio control switch.
  2. Use a J 39200 in order to measure the resistance between the left side radio control switch harness connector C205 terminal A and terminal C.
  3. Press each of the steering wheel control buttons one at a time.
  4. Compare the approximate resistance values to the following list:
    5. • Seek up: 3102 ohms
    • Seek down: 4282 ohms
    • Scan: 6652 ohms
    • AM/FM 13632 ohms

Do all of the resistance values approximately equal the values listed above?

--

Go to Step 8

Go to Step 18

18
  1. Test for a poor connection at the steering wheel switch harness connector.
  2. If the connection is OK, replace the left side steering wheel radio control switch.
    3. • For Oldsmobile refer to Steering Wheel Control Switches Replacement
  3. Test the system again.

Is the repair complete?

--

Go to Steering Wheel Control System Check

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