GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Regal 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Brake Warning Indicator Inoperative

Brake Warning Indicator Inoperative During Bulb Test

Step

Action

Value(s)

Yes

No

1

Was the instrument cluster diagnostic system check performed?

--

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

2
  1. Connect the Tech 2 scan tool to the Data Link Connector (DLC).
  2. Go to special functions.
  3. WOW the instrument cluster.

Is the BRAKE warning indicator light on?

--

Go to Step 2

Go to Step 4

4

Replace the instrument cluster. Refer to Instrument Cluster Replacement

Is the repair complete?

--

Go to Step 5

--

5
  1. Turn the ignition switch to the LOCK position.
  2. Reconnect connectors/components removed.

Is the action complete?

--

System OK

--

Brake Warning Indicator Inoperative with Park Brake Applied

Step

Action

Value(s)

Yes

No

1

Was the instrument cluster diagnostic system check performed?

--

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

2

Turn the ignition switch to RUN position.

Did the BRAKE warning indicator on for 3 seconds during bulb test?

--

Go to Step 3

Go to Brake Warning Indicator Inoperative

3
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the park brake indicator switch connector.
  3. Connect a 3A fused jumper between the park brake indicator switch harness connector terminal A (circuit  1830 LT BLU) and ground.
  4. Turn the ignition switch to the RUN position.

Is the BRAKE warning indicator on?

--

Go to Step 4

Go to Step 5

4

Replace the park brake indicator switch. Refer to Parking Brake Indicator Switch Replacement

Is the repair complete?

--

System OK

--

5
  1. Turn the ignition switch to the LOCK position.
  2. Using a 3A fused jumper, backprobe from the Daytime Running Lights (DRL) control module connector C2 circuit  1830 LT BLU terminal E to ground.
  3. Turn the ignition switch to the RUN position.

Is the BRAKE warning indicator on?

--

Go to Step 6

Go to Step 7

6

Repair poor connection or open in circuit  1830 LT BLU between the DRL control module connector C2 terminal E and the park brake indicator switch connector terminal A.

Is the repair complete?

--

System OK

--

7
  1. Turn the ignition switch to the LOCK position.
  2. Using a 3A fused jumper, backprobe between the DRL control module connector C2 terminal D and ground.
  3. Turn the ignition switch to the RUN position.

Is the BRAKE warning indicator on?

--

Go to Step 8

Go to Step 9

8

Replace the DRL control module. Refer to Daytime Running Lights (DRL) Control Module Replacement

Is the repair complete?

--

System OK

--

9
  1. Turn the ignition switch to the LOCK position.
  2. Using a fused jumper, backprobe between the Body Control Module (BCM) connector C1 terminal D5 circuit 233 ORN/BLK and ground.
  3. Turn the ignition switch to the RUN position.

Is the BRAKE warning indicator on?

--

Go to Step 10

Go to Step 11

10

Repair the poor connection or open in circuit 233 ORN/BLK between DRL control module connector C2 terminal D and the BCM connector C1 terminal D5.

Is the repair complete?

--

System OK

--

11

Refer to Body Control Module Replacement

Is the action complete?

--

System OK

--

12
  1. Turn the ignition switch to the LOCK position.
  2. Reconnect connectors/components removed.

Is the action complete?

--

Go to Diagnostic System Check - Instrument Cluster

--

Brake Warning Indicator Inoperative with Low Brake Fluid

Step

Action

Value(s)

Yes

No

1

Turn the ignition switch to RUN position.

Is the BRAKE warning indicator on?

--

Go to Step 2

Go to Brake Warning Indicator Inoperative

2
  1. Disconnect the brake fluid level indicator switch.
  2. Connect a 3A fused jumper between the brake fluid level indicator switch terminal B(circuit 209 PPL) and A (circuit 1550 BLK).
  3. Turn the ignition switch to the RUN position.

Is the BRAKE warning indicator on?

--

Go to Step 3

Go to Step 4

3

Replace the brake fluid level indicator switch. Refer to Brake Fluid Level Indicator Switch Replacement

Is the repair complete?

--

System OK

--

4

Check for a poor connection or open between the brake fluid level indicator switch connector terminal B (circuit 1650) and ground.

Is a poor connection or open in circuit 1650?

--

Go to Step 5

Go to Step 6

5

Repair poor connection or open in circuit  1650.

Is the repair complete?

--

System OK

--

6

Repair poor connection or open in circuit 209.

Is the repair complete?

--

System OK

--