GM Service Manual Online
For 1990-2009 cars only

Fasten Safety Belt Indicator/Chime Inoperative Driver

Step

Action

Yes

No

Schematic Reference: Seat Belt Schematics

Connector End View Reference: Seat Belt Connector End Views

1

Did you review the Seat Belt System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Seat Belts

2

  1. Close the drivers door.
  2. Do not connect the drivers seat belt.
  3. Turn the ignition switch to the ON position.
  4. The seat belt warning alarm should chime approximately one chime per second for approximately 5 seconds.
  5. The seat belt indicator flashes.
  6. The seat belt indicator goes out and the alarm stops chiming when the seat belt is fastened.

Does the seat belt warning system operate properly?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Disconnect the seat belt switch connector.
  2. Test the operation of the seat belt switch. The switch should be open between terminals 1 and 3 when the seat belt is buckled and closed when the seat belt is not buckled.

Does the seat belt switch operate properly?

Go to Step 4

Go to Step 7

4

Test the seat belt switch control circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 5

5

Test the seat belt switch ground circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 6

6

Inspect for a poor connection of the harness connector at the instrument panel cluster. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 8

7

Replace the seat belt switch. Refer to Seat Belt Buckle Replacement - Left Front .

Did you complete the replacement?

Go to Step 9

--

8

Replace the instrument panel cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console.

Did you complete the replacement?

Go to Step 9

--

9

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3

Fasten Safety Belt Indicator/Chime Inoperative Passenger

Step

Action

Yes

No

Schematic Reference: Seat Belt Schematics

Connector End View Reference: Seat Belt Connector End Views

1

Did you review the Seat Belt System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Seat Belts

2

  1. Close the passenger door.
  2. Do not connect the passenger seat belt.
  3. Turn the ignition switch to the ON position.
  4. The passenger seat belt indicator flashes.
  5. The seat belt indicator goes out when the seat belt is fastened.

Does the seat belt warning system operate properly?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Disconnect the seat belt switch connector.
  2. Test the operation of the seat belt switch. The switch should be open when the seat belt is buckled and closed when the seat belt is not buckled.

Does the seat belt switch operate properly?

Go to Step 4

Go to Step 12

4

  1. Disconnect the occupant detection sensor connector.
  2. Test the operation of the occupant detection sensor. The switch should be open when the passenger seat is not occupied and closed when the passenger seat is occupied.

Does the occupant detection sensor operate properly?

Go to Step 5

Go to Step 11

5

Test the seat belt switch ground circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 14

Go to Step 6

6

Test the seat belt switch control circuit for an open between the occupant detection sensor and the instrument panel cluster. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 14

Go to Step 7

7

Test the seat belt switch control circuit for an open between the occupant detection sensor and the passenger seat belt switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 14

Go to Step 8

8

Test the passenger seat belt warning lamp feed circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 14

Go to Step 9

9

Test the passenger seat belt warning lamp signal circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 14

Go to Step 10

10

Inspect for a poor connection of the harness connector at the instrument panel cluster. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 14

--

11

Replace the occupant detection sensor.

Did you complete the replacement?

Go to Step 14

--

12

Replace the seat belt switch. Refer to Seat Belt Buckle Replacement - Right Front .

Did you complete the replacement?

Go to Step 14

--

13

Replace the instrument panel cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console.

Did you complete the replacement?

Go to Step 14

--

14

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3