DEFINITION: The BCM does not sound the key-in-ignition reminder when the driver's door is open, the key is fully inserted in the ignition switch cylinder, and the ignition switch is in the off position or the accessory position.

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 to the on position.
3. Lower the driver's window, in order to prevent lockout.
4. Close all of the vehicle doors.
5. While observing the courtesy lamps, open, then close the driver's door.

Did the courtesy lamps turn on with the driver's door open?

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Go to Step 3

Go to Step 9

1. Ensure that the IP dimmer switch is off, and all of the vehicle doors are closed.
2. Turn the ignition switch to the off position.
3. While observing the courtesy lamps, remove the key from the ignition switch.

Did the courtesy lamps turn on upon removing the key from the ignition switch?

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Go to Step 4

Go to Step 6

1. Connect a scan tool to the data link connector (DLC).
2. Turn the ignition switch to the on position.
3. Using the scan tool, monitor the key in switch input.

Does the scan tool indicate the key in input active with the key in the ignition switch?

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Go to Step 5

Go to Step 10

1. Place the key in the ignition cylinder.
2. Ensure that the ignition switch is in the off position.
3. Open, then close the driver's door.

Does the BCM sound the key in the ignition reminder?

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Go to Step 14

Go to Step 10

1. Insert the key fully in the ignition switch.
2. Disconnect BCM connector C2.
3. Using a test lamp, connect between B+ and the BCM connector C2 terminal D1.

Is the test lamp on?

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Go to Step 4

Go to Step 7

1. Disconnect the ignition switch harness connector C2.
2. Using a test lamp, connect between B+ and the ignition switch harness connector C2 terminal E.

Is the test lamp on?

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Go to Step 8

Go to Step 11

1. Disconnect the BCM connector C2.
2. Using a DMM, measure the resistance between the ignition switch harness connector C2 terminal E and the ignition switch harness connector C1 terminal D1.

Is the resistance less than the specified value?

2 ohms

Go to Step 12

Go to Step 13

The key in ignition reminder is inoperative 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 diagnosis and repair of the interior lights door lock ajar input.

Is the action complete?

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Go to Step 15

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1. Inspect the BCM connector C2 for poor terminal contact. If connector is OK, replace the BCM. Refer to Body Control Module Replacement in Body Control System.
2. After the 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 15

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Repair the poor connection or open in circuit 1550.

Is the repair complete?

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Go to Step 15

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1. Replace the ignition switch. Refer to Ignition Switch Lock Cylinder Replacement .
2. After ignition switch replacement, perform the theft deterrent relearn 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 15

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Repair poor connection or open in circuit 80.

Is the repair complete?

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Go to Step 15

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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 key in the ignition reminder.

Is the action complete?

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Go to Step 15

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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 DTC present?

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Go to Diagnostic System Check - Audible Warnings

System OK