GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1998 🢒 Firebird 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Brake Warning Indicator Inoperative

Brake Warning Indicator Inoperative With Park Brake Set

Step

Action

Value(s)

Yes

No

1
  1. Turn the ignition switch to RUN.
  2. Disconnect the park brake switch.
  3. Connect a fused jumper from the park brake switch connector to ground.

Does the BRAKE indicator light?

--

Go to Step 4

Go to Step 2

2
  1. Disconnect the daytime running lights module (DRL) connector C2.
  2. Connect a fused jumper from DRL module connector C2 terminal D to ground.

Does the BRAKE indicator light?

--

Go to Step 5

Go to Step 3

3

Repair an open in CKT 33 between the DRL module and S228.

Is the repair complete?

--

System OK

--

4
  1. Inspect for a poor connection at the park brake switch.
  2. Inspect for mechanical interference at the park brake switch.
  3. If OK, replace the park brake switch.

Is the repair complete?

--

System OK

--

5
  1. Inspect for an open in CKT 1134 between the park brake switch and the DRL module.
  2. Inspect for a poor connection at the DRL module connector C2.
  3. If OK, replace the DRL module.

Is the repair complete?

--

System OK

--

Brake Warning Indicator Inoperative With Low Brake Fluid Level

Step

Action

Value(s)

Yes

No

1
  1. Disconnect the brake fluid level indicator sensor.
  2. Connect a fused jumper from sensor connector terminal A to ground.
  3. Turn the ignition switch to RUN.

Does the BRAKE indicator light?

--

Go to Step 3

Go to Step 2

2

Repair an open or a poor connection in CKT 33 between the brake fluid level indicator sensor and S228.

Is the repair complete?

--

System OK

--

3
  1. Inspect for a poor connection at the brake fluid level indicator sensor.
  2. Inspect for an open in CKT 150 between the sensor and S155.
  3. If OK, replace the brake fluid level indicator sensor.

Is the repair complete?

--

System OK

--

Brake Warning Indicator Inoperative With Antilock Brake System Failure

Step

Action

Value(s)

Yes

No

1
  1. Disconnect the brake malfunction indicator lamp driver module.
  2. Connect a fused jumper from the lamp driver module connector terminal E to ground.
  3. Turn the ignition switch to RUN.

Does the BRAKE indicator light?

--

Go to Step 2

Go to Step 6

2

Connect a fused jumper from the lamp driver module connector terminal E to terminal D.

Does the BRAKE indicator light?

--

Go to Step 3

Go to Step 7

3

Connect a test lamp from the lamp driver module connector terminal B to terminal D.

Does the test lamp light?

--

Go to Step 4

Go to Step 8

4

Disconnect the electronic brake control module (EBCM) connector C1.

Does the BRAKE indicator light?

--

Go to ABS Diagnostic System Check

Go to Step 5

5
  1. Inspect for a short to ground in CKT 1471 between the lamp driver module and the EBCM.
  2. If OK, replace the lamp driver module.

Is the repair complete?

--

System OK

--

6

Repair an open in CKT 33 between the lamp driver module and S228.

Is the repair complete?

--

System OK

--

7

Repair an open in CKT 650 between the lamp driver module and S216.

Is the repair complete?

--

System OK

--

8

Repair an open in CKT 39 between the lamp driver module and S206.

Is the repair complete?

--

System OK

--