The numbers below refer to the step numbers on the diagnostic table.
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Brake Warning System Schematics Connector End Views Reference: Hydraulic Brake Connector End Views , Instrument Panel, Gages, and Console Connector End Views in Instrument Panel, Gages, and Console or Computer/Integrating Systems Connector End Views in Computer/Integrating Systems | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 | Inspect the brake fluid level. Is the brake fluid level OK? | Go to Step 3 | Go to Brake Fluid Loss |
3 |
Does the scan tool indicate that the Park Brake Switch parameter is Inactive? | 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 |
Does the scan tool indicate that the Park Brake Switch parameter is Inactive? | Go to Step 9 | Go to Step 7 |
6 |
Does the scan tool indicate that the Brake Warning Lamp parameter is ON? | Go to Step 10 | Go to Step 8 |
Did you find and correct the condition? | Go to Step 17 | Go to Step 11 | |
8 |
Did you find and correct the condition? | 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 (IPC). 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 Brake Fluid Level Indicator Switch Replacement . Did you complete the repair? | Go to Step 17 | -- |
15 | Replace the body control module (BCM). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the repair? | Go to Step 17 | -- |
16 | 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 17 | -- |
17 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |