Did you perform the ABS Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - ABS

Inspect the brake fluid level.

Is the brake fluid level OK?

Go to Step 3

Go to Master Cylinder Reservoir Filling

1. Turn ON the ignition, with the engine OFF.
2. Disengage the park brake.
3. Using a scan tool, observe the brake warning lamp in the IPC Inputs data list.

Does the scan tool indicate that the park brake switch parameter is ON?

Go to Step 5

Go to Step 4

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

System OK

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With the scan tool still hooked up, monitor the park brake switch in the BCM Inputs data list.

Does the scan tool indicate that the park brake switch parameter is ON?

Go to Step 6

Go to Step 9

Inspect circuit 1830 for a short to ground or high resistance.

Did you find and correct the condition?

System OK

Go to Step 7

Inspect the park brake indicator switch for a short to ground or high resistance.

Did you find and correct the condition?

System OK

Go to Step 8

Replace the body control module. Refer to Body Control Module Replacement in Body Control System.

Reprogram the body control module. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.

Is the repair complete?

System OK

--

Inspect circuit 209 for a short to ground or high resistance.

Did you find and correct the condition?

System OK

Go to Step 10

Inspect the brake fluid level indicator switch for a short to ground or high resistance.

Did you find and correct condition?

System OK

Go to Step 4