Brake Warning Indicator Inoperative
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
Brake Warning Indicator Inoperative
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Brake Warning System Schematics Connector End View Reference: Hydraulic Brakes Connector End Views |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 | With the scan tool command the instrument panel cluster (IPC) indicators ON. Does the red brake indicator illuminate during the test? |
Go to Step 3 | Go to Step 15 |
| 3 | Apply the park brake. Does the red brake indicator illuminate? |
Go to Step 4 | Go to Step 5 |
| 4 |
|
Go to Step 10 | Go to Step 7 |
| 5 |
|
Go to Step 9 | Go to Step 6 |
| 6 | Test the signal circuit of the park brake switch for a high resistance or a open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 16 | Go to Step 11 |
| 7 | Test the signal circuit of the brake fluid level switch for a high resistance or a open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 16 | Go to Step 8 |
| 8 | Test the ground circuit of the brake fluid level switch for a high resistance or an open. Refer to Circuit Testing
andWiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 16 | Go to Step 11 |
| 9 | Inspect for poor case ground or poor connections at the harness connector of the park brake 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 16 | Go to Step 12 |
| 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 16 | Go to Step 13 |
| 11 | Inspect for poor connections at the harness connector of the body control module (BCM). 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 16 | Go to Step 14 |
| 12 | Replace the park brake switch. Refer to Park Brake Warning Lamp Switch Replacement
in Park Brake. Did you complete the repair? |
Go to Step 16 | - |
| 13 | Replace the brake fluid level switch. Refer to Master Cylinder Fluid Level Sensor Replacement . Did you complete the repair? |
Go to Step 16 | - |
| 14 | Replace the BCM. Refer to Control Module References
in Computer/Integrating Systems for replacement, setup and programming. Did you complete the repair? |
Go to Step 16 | - |
| 15 | Replace the IPC. Refer to Control Module References
in Computer/Integrating Systems for replacement, setup and programming. Did you complete the repair? |
Go to Step 16 | - |
| 16 | Operate the vehicle in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 2 |