Schematic Reference: Body Control System Schematics

Did you perform the Diagnostic System Check located in the section relevant to the malfunction?

Go to Step 2

Begin the diagnosis in the section relevant to the malfunction.

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, monitor the DTC Information for DTC 1 in the Body Control Module (BCM).

Does the scan tool indicate that DTC 1 is current?

Go to Step 4

Go to Step 3

Most random occurrences of this DTC are caused by electrical transients. Therefore, if DTC 1 is set and there are no noticeable problems with the vehicle, clear DTC and check function of BCM outputs. If DTC does not reset and BCM outputs are functioning correctly, disregard DTC 1.

Go to Diagnostic Aids

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1. Use the scan tool in order to clear the DTCs.
2. Operate the vehicle within normal operating conditions.

Does the DTC reset?

Go to Step 5

System OK

Inspect the following BCM outputs for a short to voltage:

Did you find and correct the condition?

System OK

Go to Step 6

1. Replace the BCM. Refer to Body Control Module Replacement .
2. Perform the setup procedure for the BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration .

Did you complete the replacement?

System OK

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