GM Service Manual Online
For 1990-2009 cars only

Brake Warning Indicator, Message, and Chime Inoperative Buick

Step

Action

Value(s)

Yes

No

1

Did you perform the Brake Warning System Check?

--

Go to Step 2

Go to Brake Warning System Check

2

  1. Disconnect the brake fluid level sensor.
  2. Connect a J 39200 digital multimeter (DMM) between the brake fluid level sensor harness connector terminal A and battery positive voltage.

Is the measured voltage within the specified range?

10-15V

Go to Step 4

Go to Step 3

3

Repair an open in CKT 1451 (BLK). Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Brake Warning System Check

--

4

Replace the brake fluid level sensor.

Did you complete the repair?

--

Go to Brake Warning System Check

--

Brake Warning Indicator, Message, and Chime Inoperative Oldsmobile

Step

Action

Value(s)

Yes

No

1

Did you perform the Brake Warning System Check?

--

Go to Step 2

Go to Brake Warning System Check

2

  1. Disconnect the brake fluid level sensor.
  2. Connect a J 39200 digital multimeter (DMM) between the brake fluid level sensor harness connector terminal A and battery positive voltage.

Is the measured voltage within the specified range?

10-15V

Go to Step 4

Go to Step 3

3

Repair an open in CKT 1451 (BLK). Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Brake Warning System Check

--

4

Replace the brake fluid level sensor.

Did you complete the repair?

--

Go to Brake Warning System Check

--