DEFINITION: The BCM sounds the key in the ignition reminder when one or more of the following conditions are present:

Did you performed the Audible Warning Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Audible Warnings

1. Ensure that the IP dimmer switch is off.
2. Turn the ignition switch on.
3. Lower the driver's window, in order to prevent lockout.
4. Close all of the vehicle doors.

Are the courtesy lamps off?

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Go to Step 3

Go to Step 7

1. Turn the ignition switch to the off position.
2. Connect a scan tool to the data link connector (DLC).
3. Turn the ignition switch to the on position.
4. Using the scan tool, monitor the key in the switch input.
5. Turn the ignition switch to the off position.
6. While monitoring the scan tool, remove the key from the ignition switch.

Does the scan tool indicate that the key in input is no with the key removed from the ignition switch?

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Go to Step 4

Go to Step 5

1. Ensure that the key is removed from the ignition switch.
2. Open, then close the driver's door.

Does the BCM sound the key in the ignition reminder?

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Go to Step 9

Go to Step 8

1. Remove the key from the ignition key cylinder.
2. Disconnect the BCM connector C2.
3. Using a test light, connect between B+ and the BCM connector C2 terminal D1.

Is the test light off?

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Go to Step 4

Go to Step 6

1. Leave the test light connected from the previous step.
2. Disconnect the ignition switch harness connector C2.
3. Observe the test light again.

Is the test light off?

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Go to Step 10

Go to Step 11

The key-in-ignition reminder is always on due to a malfunction between the BCM and the driver's door lock ajar switch. Refer to Diagnostic System Check - Lighting Systems in Lighting Systems for the diagnosis and repair of the interior lights door lock ajar input.

Is the action complete?

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Go to Step 12

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The malfunction is not present at this time. Refer to Audible Warnings Circuit Description for additional information regarding the operation of the fasten seat belt reminder, and indicator lamp.

Is the action complete?

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Go to Step 12

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1. Replace the BCM. Refer to Body Control Module Replacement in Body Control System.
2. After BCM replacement, perform the Setup New BCM procedure. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.

Is the repair complete?

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Go to Step 12

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Replace the ignition switch. Refer to Ignition Switch Lock Cylinder Replacement .

Is the repair complete?

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Go to Step 12

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Repair the short to ground in circuit 80.

Is the repair complete?

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Go to Step 12

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1. Turn the ignition switch to the off position.
2. Reconnect the connectors and reinstall the components that you removed.
3. Inspect for BCM current DTCs. Refer to Diagnostic Trouble Code (DTC) Displaying .

Are there any BCM current DTCs present?

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Go to Diagnostic System Check - Audible Warnings

System OK