Attempt to enter the BCM diagnostic mode. Refer to On-Board Diagnostic Features .

Does the BCM enter the diagnostic mode?

Go to Testing for Electrical Intermittents in Wiring Systems

Go to Step 2

Turn the ignition switch to the RUN position.

Does the SECURITY indicator illuminate during the BULB TEST?

Go to Step 3

Go to Step 7

Attempt to operate the windows.

Do the windows operate?

Go to Step 4

Go to Symptoms - Doors in Doors

Attempt to operate the radio.

Does the radio remain OFF?

Go to Step 5

Go to Step 10

1. Disconnect the BCM harness connectors.
2. Test the battery positive voltage circuits for opens or shorts to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
3. Test the ignition positive voltage and accessory positive voltage for opens or shorts to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 6

Test the ground circuits for opens. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 11

1. Disconnect the instrument cluster harness connector.
2. Test the security indicator supply circuit for an open or short to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 8

Test the instrument cluster for an open or high resistance in the security indicator circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 9

Test the security indicator control circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 10

Test the radio and BCM program input for a short to B+. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 11

Inspect for poor connections at the BCM harness connectors. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 13

Go to Step 12

Important:: Set up new BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration .

Replace the BCM. Refer to Body Control Module Replacement .

Did you complete the replacement?

Go to Step 13

1. Reconnect all harness connectors.
2. Operate the self-diagnostic test as described. Refer to On-Board Diagnostic Features .

Does the system operate correctly?

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Go to Step 2