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For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Corvette 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Brake Warning Indicator Inoperative

Brake Warning Indicator Inoperative with Parking Brake Applied

Brake Warning Inop (w/parking brake applied)

Step

Action

Value(s)

Yes

No

DEFINITION: Brake warning indicator will not illuminate with the ignition switch turned ON and the parking brake set.

1

Where you sent here from the Brake Warning Indicator System Check?

Go to Step 2

Go to Brake Warning Indicator System Check

2

Check the BCMI & IPC MiniFuse® #25.

Is the fuse open?

Go to Step 3

Go to Step 5

3
  1. Remove the blown fuse.
  2. Disconnect the instrument cluster connector.
  3. Using a DMM, measure the resistance from the instrument cluster connector terminal A13 to ground.

Is the resistance infinite?

Go to Step 9

Go to Step 4

4

Repair the short to ground in CKT 139.

Is the repair complete?

Go to Brake Warning Indicator System Check

5
  1. Disconnect the parking brake switch connector.
  2. Connect a jumper wire between the parking brake switch connector terminal A and ground.
  3. Turn the ignition switch to ON.

Is the Brake Warning Indicator ON?

Go to Step 6

Go to Step 7

6

Replace the parking brake switch.

Is the repair complete?

Go to Brake Warning Indicator System Check

7
  1. Disconnect the instrument cluster connector.
  2. Using a DMM, check for continuity between the instrument cluster connector terminal A6 and the parking brake switch connector terminal A.

Is CKT 33 continuous between these connectors?

Go to Step 9

Go to Step 8

8

Repair the open in CKT 33.

Is the repair complete?

Go to Brake Warning Indicator System Check

9
  1. Disconnect the instrument cluster connector.
  2. Connect a DMM between the instrument cluster connector terminal A13 and ground.
  3. Turn the ignition switch to the ON position.
  4. Measure the available voltage at the instrument cluster connector terminal A13.

Is the voltage within the specified values?

10.0-14.0V

Go to Step 10

Go to Step 11

10

Check the instrument cluster brake warning indicator light bulb for an open circuit. If OK, replace the instrument cluster.

Is the repair complete?

Go to Brake Warning Indicator System Check

11

Repair the open in CKT 139.

Is the repair complete?

Go to Brake Warning Indicator System Check

Brake Warning Indicator Inoperative with Low Brake Fluid

Brake Warning Inop (w/low brake Fluid)

Step

Action

Value(s)

Yes

No

DEFINITION: Brake warning indicator will not illuminate with the ignition switch turned ON and the brake fluid level below normal.

1

Where you sent here from the Brake Warning Indicator System Check?

Go to Step 2

Go to Brake Warning Indicator System Check

2

Check the BCMI & IPC MiniFuse® #25.

Is the fuse open?

Go to Step 3

Go to Step 5

3
  1. Remove the blown fuse.
  2. Disconnect the instrument cluster connector.
  3. Using a DMM, measure the resistance from the instrument cluster connector terminal A13 to ground.

Is the resistance infinite?

Go to Step 11

Go to Step 4

4

Repair the short to ground in CKT 139.

Is the repair complete?

Go to Brake Warning Indicator System Check

5
  1. Disconnect the brake fluid level switch connector.
  2. Connect a jumper wire between the brake fluid level switch connector terminal A and terminal B.
  3. Turn the ignition switch to ON.

Is the Brake Warning Indicator ON?

Go to Step 6

Go to Step 7

6

Replace the brake fluid level switch.

Is the repair complete?

Go to Brake Warning Indicator System Check

7

Using a DMM, check for continuity between the brake fluid level switch connector terminal B and ground.

Is CKT 150 continuous to ground?

Go to Step 9

Go to Step 8

8

Repair the open in CKT 150 between G101 and the brake fluid level switch connector.

Is the repair complete?

Go to Brake Warning Indicator System Check

9
  1. Disconnect the instrument cluster connector.
  2. Using a DMM, check for continuity between the brake fluid level switch connector terminal A and the instrument cluster connector terminal B4.

Is the CKT 333 continuous between these connectors?

Go to Step 11

Go to Step 10

10

Repair the open in CKT 333.

Is the repair complete?

Go to Brake Warning Indicator System Check

11
  1. Disconnect the instrument cluster connector.
  2. Connect a DMM between the instrument cluster connector terminal A13 and ground.
  3. Turn the ignition switch to the ON position.
  4. Measure the available voltage at the instrument cluster connector terminal A13.

Is the voltage within the specified values?

10.0-14.0V

Go to Step 13

Go to Step 12

12

Repair the open in CKT 139.

Is the repair complete?

Go to Brake Warning Indicator System Check

13

Check the instrument cluster brake warning indicator light bulb for an open circuit. If OK, replace the instrument cluster.

Is the repair complete?

Go to Brake Warning Indicator System Check