Schematic Reference: Antilock Brake System Schematics

1

Did you perform the ABS Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - ABS

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, observe the Brake Lamp parameter in the instrument panel cluster data list.

Does the scan tool display Off?

Go to Step 3

Go to Step 4

1. Turn OFF the ignition.
2. Turn ON the ignition, with the engine OFF.
3. Observe the red Brake indicator on the instrument panel cluster (IPC) during the bulb check.

Does the red Brake indicator illuminate during the bulb check and then turn OFF?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 5

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 8

Go to Step 6

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 8

Go to Step 7

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

Did you complete the repair?

Go to Step 8

--

Replace the instrument cluster (IPC). Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.

Did you complete the repair?

Go to Step 8

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2