GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Steering Wheel Control System Check?

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Go to Step 2

Go to Steering Wheel Control System Check

2

  1. Disable the Supplemental Inflatable Restraint (SIR) System. Disconnect the inflator module from the steering wheel. Refer to Inflatable Restraint Steering Wheel Module Replacement in Supplemental Inflatable Restraint.
  2. Turn the parklamps on.
  3. Use the test light in order to probe CKT 8 between the steering wheel controls connector terminal B and ground.

Did the test light illuminate?

--

Go to Step 3

Go to Step 7

3

  1. Disconnect the steering wheel controls.
  2. Use the J 39200 in order to measure the resistance in CKT 8 between the steering wheel controls connector terminal B and terminal D.

Did the resistance measure within the specified range?

0-4 ohms

Go to Step 4

Go to Step 13

4

  1. Disconnect the SIR coil assembly connector. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement in Supplemental Inflatable Restraint.
  2. Use the J 39200 in order to measure the resistance in CKT 350 between the steering wheel controls connector terminal D and the SIR coil assembly connector terminal D.

Does the resistance measure within the specified range?

0-2 ohms

Go to Step 5

Go to Step 9

5

Use the J 39200 in order to measure the resistance in CKT 350 between the SIR coil assembly connector terminal D and ground.

Does the resistance measure within the specified range?

0-2 ohms

System OK

Go to Step 6

6

Repair the open circuit condition in CKT 350 between the SIR coil assembly harness connector terminal D and ground. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

System OK

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7

  1. Disconnect the steering wheel controls.
  2. Use the test light in order to backprobe CKT 8 between the steering wheel controls connector terminal B and ground.

Did the test light illuminate?

--

Go to Step 12

Go to Step 8

8

  1. Disconnect the SIR coil assembly connector. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement in Supplemental Inflatable Restraint.
  2. Use the test light in order to backprobe CKT 8 between the SIR coil assembly connector terminal B and ground.

Did the test light illuminate?

--

Go to Step 9

Go to Step 10

9

Replace the SIR coil assembly. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement in Supplemental Inflatable Restraint.

Did the test light illuminate?

--

System OK

--

10

  1. Disconnect the inline connector C275.
  2. Use the test light in order to backprobe CKT 8 between the inline C275, inline fuse B side, connector terminal 7 and ground.

Did the test light illuminate?

--

Go to Step 11

Go to Lighting Systems

11

Repair the open circuit condition in CKT 8 between the SIR coil assembly connector terminal B and the inline C275, connector terminal 7. Refer to Wiring Repairs in Wiring Systems

Did you complete the repair?

--

System OK

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12

Use the J 39200 in order to measure the resistance in CKT 8 between the steering wheel controls connector terminal B and ground.

Does the measured resistance equal the specified range?

Go to Step 13

Go to Step 14

13

Replace the bulbs in the steering wheel controls. Refer to Steering Wheel and Column.

Did you complete the repair?

--

System OK

Go to Step 14

14

Replace the steering wheel controls. Refer to Steering Wheel and Column.

Did you complete the repair?

--

System OK

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