Did you perform the Hydraulic Brake Diagnostic System Check?

Go to Step  2

Go to Hydraulic Brake Diagnostic System Check

Turn ON the ignition, with the engine OFF.

Did the instrument cluster brake indicator lamp light?

Go to Step 3

Go to Diagnostic Starting Point - Instrument Panel, Gages and Console

1. Turn ON the ignition, with engine OFF.
2. Engage the parking brake.

Does the brake warning lamp illuminate?

Go to Step 8

Go to Step 4

1. Turn ON the ignition, with the engine OFF.
2. With the parking brake still engaged, use a scan tool in order to monitor the park brake switch in the BCM Inputs data list.

Does the scan tool indicate that the park brake switch is active?

Go to Step 7

Go to Step  5

Inspect circuit 1830 for an open or high resistance.

Did you find and correct the condition?

System OK

Go to Step 6

Replace park brake indicator switch.

Is the repair complete?

System OK

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Using a scan tool, establish communication with the instrument panel cluster.

Can communication be established with the instrument panel cluster?

Go to Diagnostic Starting Point in Body Control System

Go to Diagnostic Starting Point - Instrument Panel, Gages and Console in Instrument Panel, Gauges and Console

1. Ensure that the parking brake disengaged.
2. Disconnect the brake fluid level indicator switch.
3. Connect a 3A fused jumper wire between the brake fluid level indicator harness connector B and ground.

Does the brake warning indicator lamp light?

Go to Step 9

Go to Step 12

Jumper a 3A fused jumper wire between the brake fluid level indicator harness connector A and B.

Does the brake warning indicator lamp illuminate?

Go to Step 10

Go to Step 11

Replace the brake fluid level indicator switch.

Is the repair complete?

System OK

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Repair the open or high resistance in circuit 1550.

Is the repair complete?

System OK

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Inspect circuit 209 for an open or high resistance.

Was there a open or high resistance on circuit 209?

Go to Step 13

Go to Step 14

Repair the open or high resistance in circuit 209.

Is the repair complete?

System OK

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Replace instrument panel cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.

Is the repair complete?

System OK

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