GM Service Manual Online
For 1990-2009 cars only

Chime Inoperative Seat Belt

Step

Action

Values

Yes

No

1

Inspect the chime module connector to make sure it is connected properly.

Is the connector disconnected or partially disconnected?

--

Go to Step 2

Go to Step 3

2

Connect the electrical connector for the chime module.

Is the repair complete?

--

System OK

--

3

Inspect fuse F4.

Is fuse F4 open?

--

Go to Step 4

Go to Step 5

4

  1. Inspect for a short circuit and repair it, if necessary.
  2. Replace the fuse.

Is the repair complete?

--

System OK

--

5

  1. Turn the ignition ON.
  2. Inspect the voltage at fuse F4.

Is the specified voltage available at fuse F4?

11-14 V

Go to Step 7

Go to Step 6

6

Repair the power supply circuit for fuse F4.

Is the repair complete?

--

System OK

--

7

  1. Disconnect the chime module.
  2. Turn the ignition ON.
  3. Inspect the voltage at terminal 8 of the chime module connector.

Does the voltage equal the specified value?

11-14 V

Go to Step 9

Go to Step 8

8

Repair the open circuit between fuse F4 and the chime module connector.

Is the repair complete?

--

System OK

--

9

With the chime module disconnected, use an ohmmeter to check continuity between terminal 5 of the chime module connector and ground.

Does the ohmmeter indicate the specified value?

0 ohms

Go to Step 11

Go to Step 10

10

Repair the open circuit between terminal 5 of the chime module connector and ground.

Is the repair complete?

--

System OK

--

11

  1. Disconnect the chime module connector.
  2. Make sure the driver side seat belt is unfastened.
  3. Use an ohmmeter to check the continuity between terminal 1 of the chime module and ground.

Does the ohmmeter indicate the specified value?

0 ohms

Go to Step 12

Go to Step 13

12

Replace the chime module.

Is the repair complete?

--

System OK

--

13

  1. Disconnect the seat belt switch.
  2. Make sure the driver side seat belt is unfastened.
  3. Use an ohmmeter to check the continuity of the switch.

Does the ohmmeter indicate the specified value?

0 ohms

Go to Step 15

Go to Step 14

14

Replace the seat belt switch.

Is the repair complete?

--

System OK

--

15

Use an ohmmeter to check the continuity of the wire between terminal 1 of the chime module and the seat belt switch.

Does the ohmmeter indicate the specified value?

0 ohms

Go to Step 17

Go to Step 16

16

Repair the open circuit between terminal 1 of the chime module and the seat belt switch.

Is the repair complete?

--

System OK

--

17

Repair the open circuit between the seat belt switch connector and ground.

Is the repair complete?

--

System OK

--