For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
DEFINITION: BRAKE indicator inoperative with parking brake, low brake fluid or ignition switch in the START position.
1 | Was the brake warning system check performed? | -- | Go to Step 2 | Go to Brake Warning System Check
2 | Is the BRAKE indicator inoperative with the parking brake applied? | -- | Go to Step 4 | Go to Step 3
3 | Is the BRAKE indicator inoperative with low brake fluid (float manually held down)? | -- | Go to Step 9 | Go to Step 13
4 |

1. Disconnect the DRL control module connector.
2. Engage the parking brake.
3. Connect a test light from DRL control module connector cavity 3 to B+.

Does the test lamp illuminate?

--

Go to Step 5

Go to Step 6

5 | Test for an open in the brake indicator control circuit. Refer to Testing for Continuity and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Brake Warning System Check | Go to Step 7
6 | Test for an open in the parking brake signal circuit. Refer to Testing for Continuity and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Brake Warning System Check | Go to Step 8
7 | Replace the DRL control module. Refer to Daytime Running Lights (DRL) Control Module Replacement in Lighting Systems. Is the repair complete? | -- | Go to Brake Warning System Check | --
8 | Replace the parking brake switch. Refer to Park Brake Travel Switch Replacement in Park Brake. Is the repair complete? | -- | Go to Brake Warning System Check | --
9 | Backprobe the brake fluid level switch with a test lamp from cavity 1 to B+. Does the test lamp illuminate? | -- | Go to Step 10 | Go to Step 11
10 | Test for an open in the brake indicator control circuit. Refer to Testing for Continuity and Wiring Repairs in Wiring Systems. Was an open found and repaired? | -- | Go to Brake Warning System Check | Go to Step 12
11 | Test for an open in the ground circuit. Refer to Testing for Continuity and Wiring Repairs in Wiring Systems. Was an open found and repaired? | -- | Go to Brake Warning System Check | Go to Step 12
12 | Replace the fluid level switch. Refer to Brake Fluid Level Indicator Switch Replacement . Is the repair complete? | -- | Go to Brake Warning System Check | --
13 |

1. Backprobe the junction block connector C4 with a test light from cavity 13 to B+.
2. Turn the ignition switch to the START position.

Does the test lamp illuminate?

--

Go to Step 16

Go to Step 14

14 |

1. Backprobe the junction block connector C2 with a test light from cavity 8 to B+.
2. Turn the ignition switch to the START position.

Does the test lamp illuminate?

--

Go to Step 18

Go to Step 15

15 | Replace the ignition switch. Refer to Ignition Switch Replacement - On Vehicle in Steering Wheel and Column. Is the repair complete? | -- | Go to Brake Warning System Check | --
16 | Test for an open in the BRN/BLK wire. Refer to Testing for Continuity and Wiring Repairs in Wiring Systems. Was an open found and repaired? | -- | Go to Brake Warning System Check | Go to Step 17
17 | Repair/replace the instrument cluster printed circuit. Refer to Printed Instrument Cluster Circuit Replacement in Instrument Panel, Gauges and Console. Is the repair complete? | -- | Go to Brake Warning System Check | --
18 | Replace the junction block. Is the repair complete? | -- | Go to Brake Warning System Check | --