Test Description
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
The number(s) below refer to the step number(s) on the diagnostic table.
- 7: If the fuse in the jumper opens when you perform this test, the signal circuit of the brake fluid level switch is shorted to voltage.
Brake Warning Indicator Always On
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Brake Warning System Schematics Connector End Views Reference: Hydraulic Brakes Connector End Views or Instrument Panel, Gages, and Console Connector End Views or Body Control System Connector End Views |
|||
| 1 | Did you review the hydraulic brakes operation and perform the necessary inspection? | Go to Step 2 | Go to Symptoms - Hydraulic Brakes |
| 2 | Inspect the brake fluid level. Is the brake fluid level OK? |
Go to Step 3 | Go to Brake Fluid Loss |
| 3 |
|
Go to Step 4 | Go to Step 5 |
| 4 | With a scan tool, observe the Brake Warning Lamp parameter in the IPC Inputs data list. Does the scan tool indicate that the Brake Warning Lamp parameter is ON? |
Go to Step 12 | Go to Step 6 |
| 5 |
|
Go to Step 9 | Go to Step 7 |
| 6 |
|
Go to Step 10 | Go to Step 8 |
| 7 |
|
Go to Step 17 | Go to Step 11 |
| 8 |
|
Go to Step 17 | Go to Step 11 |
| 9 | Inspect for poor connections at the harness connector of the park brake warning lamp switch. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 17 | Go to Step 13 |
| 10 | Inspect for poor connections at the harness connector of the brake fluid level switch. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 17 | Go to Step 14 |
| 11 | Inspect for poor connections at the harness connector of the Body Control Module. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 17 | Go to Step 15 |
| 12 | Inspect for poor connections at the harness connector of the instrument Panel cluster. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 17 | Go to Step 16 |
| 13 | Replace the park brake warning lamp switch. Refer to Stop Lamp Switch Replacement
in Park Brake. Did you complete the repair? |
Go to Step 17 | - |
| 14 | Replace the brake fluid level switch. Refer to Master Cylinder Fluid Level Sensor Replacement . Did you complete the repair? |
Go to Step 17 | - |
| 15 | Replace the Body Control Module. Refer to Body Control Module Replacement
in Body Control System. Did you complete the repair? |
Go to Step 17 | - |
| 16 | Replace the instrument cluster (IPC). Refer to Instrument Panel Cluster (IPC) Replacement
in Instrument Panel, Gages and Console. Did you complete the repair? |
Go to Step 17 | - |
| 17 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 2 |