GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Century (China) (CNG) 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Brake Warning Indicator Always On

Step

Action

Value(s)

Yes

No

1

Was the Audible Warning System Check performed?

--

Go to Step 2

Go to Audible Warnings System Check

2

Was the BCM Diagnostic System Check performed?

--

Go to Step 3

Go to Diagnostic System Check - Body Control System in BCM.

3

Check for Powertrain Control Module (PCM) Diagnostic Trouble Codes (DTCs). Refer to A Powertrain On Board Diagnostic (OBD) System Check (VIN M) or A Powertrain On Board Diagnostic (OBD) System Check ( VIN 1,K) in Engine Controls for more information.

Is the action complete?

--

Go to Step 4

--

4
  1. Connect a Tech 2 scan tool to the Data Link Connector (DLC).
  2. Use the Tech 2 scan tool in order to monitor the park brake switch input.
  3. While observing the Tech 2 scan tool, apply and then release the parking brake.

Does the Tech 2 scan tool indicate that the park brake input is active with the parking brake applied?

--

Go to Step 8

Go to Step 5

5
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the Tech 2 scan tool from the DLC.
  3. Disconnect the BCM connector C1.
  4. Release the parking brake.
  5. Use a DMM in order to measure the voltage between the BCM connector C1 terminal D5 and B+.

Is the voltage within the specified range?

9-14 V

Go to Step 6

Go to Step 8

6
  1. Leave the DMM connected from previous step.
  2. Disconnect the park brake indicator switch electrical connector.
  3. Measure the voltage again.

Is the voltage within the specified range?

9-14 V

Go to Step 7

Go to Step 9

7
  1. Leave the DMM connected form previous step.
  2. Disconnect the DRL module electrical connector C2.
  3. Measure the voltage again.

Is the voltage within the specified range?

9-14 V

Go to Step 11

Go to Step 10

8
  1. Disconnect the Tech 2 scan tool from the DLC.
  2. Turn the ignition switch to the LOCK position.
  3. Close all vehicle doors.
  4. Apply the parking brake.
  5. Step firmly and hold the brake pedal.
  6. Start the engine.
  7. While shifting the transaxle into DRIVE, listen to the chime.
  8. While the transaxle is in DRIVE, release the parking brake. The chime stops.
  9. Shift the transaxle into park.
  10. Turn the engine OFF.

Did the BCM stop the chime for the parking brake reminder upon releasing the parking brake while the transaxle into DRIVE?

--

Go to Step 12

Go to Step 13

9

Replace the park brake indicator switch.

Has the repair been made?

--

Go to Step 14

--

10

Check for a short to ground in circuit 1830.

Has the repair been made?

--

Go to Step 15

Go to Step 16

11

Repair a poor or an open connection in circuit 233.

Has the repair been made?

--

Go to Step 14

--

12

Malfunction is not present at this time. Refer to Audible Warnings Circuit Description for more information regarding the operation of the parking brake reminder.

Has the repair been made?

--

Go to Step 14

--

13
  1. Replace the BCM. Refer to Body Control Module Replacement
  2. Perform the Setup New BCM procedure. Body Control Module (BCM) Programming/RPO Configuration

Has the repair been made?

--

Go to Step 14

--

14
  1. Turn the ignition switch to the LOCK position.
  2. Reinstall the connectors and the components that were removed.

Have all the repairs been made?

--

Go to Audible Warnings System Check

--

15

Repair short to ground in circuit 1830.

Has the repair been made?

--

Go to Step 14

--

16

Replace the DRL module. Refer to Daytime Running Lights (DRL) Control Module Replacement in Lighting Systems.

Has the repair been made?

--

Go to Step 14

--