Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Scan Tool Data Definitions
- Accessory Relay Command
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The scan tool displays On/Off. The state of the accessory relay within the body control module (BCM).
- Auto Door Locks Mode
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The scan tool displays Enabled/Disabled. This is the state of the auto door locks Personalization function as programmed into the driver information center (DIC) Refer to Personalization Description and Operation .
- Auto Door Unlock Method
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The scan tool displays Key/Park. This is the method in which the auto door unlock function is activated as programmed into the DIC. Refer to Personalization Description and Operation .
- Auto Door Unlock Mode
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The scan tool displays None/Driver/All/Invalid. This is the state of the auto door unlock Personalization function as programmed into the DIC. Refer to Personalization Description and Operation .
- Battery Voltage
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The scan tool displays 9.0-15.5 volts. The state of the battery voltage supplied to the BCM.
- Door Ajar Switch
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The scan tool displays Door Closed/Door Ajar. The passenger door ajar switch input to the BCM, where an open door is displayed as Door Ajar.
- Door Cylinder Switch
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The scan tool displays Idle/Lock/Unlock. The door cylinder switch input to the BCM, where a cylinder activation is displayed as either Lock or Unlock.
- Door Cylinder Switch
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The scan tool displays 9.0-15.5 volts. The state of the battery voltage at the door cylinder switch. When the door cylinder switch is active, the voltage displayed drops.
- Door Lock Switch
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The scan tool displays Idle/Lock/Unlock. The door lock switch input to the BCM, where a lock switch activation is displayed as either Lock or Unlock.
- Door Lock Switch
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The scan tool displays 9.0-15.5 volts. The state of the battery voltage at the door lock switch. When the switch is pressed, the voltage displayed drops.
- Driver Door Ajar Switch
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The scan tool displays Door Closed/Door Ajar. The driver door ajar switch input to the BCM, where an open door is displayed as Door Ajar.
- Driver Door Lock Actuator Command
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The scan tool displays Idle/Lock/Unlock/Invalid. The state of the driver door lock actuator output, where a driver door lock actuator activation is displayed as either Lock or Unlock.
- Key Lock/Unlock Enable
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The scan tool displays Enabled/Disabled. The state of the door cylinder lock Personalization function.
- Passenger Doors Lock Actuator Command
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The scan tool displays Idle/Lock/Unlock/Invalid. The state of the passenger door lock actuators outputs, where a passenger door lock actuator activation is displayed as either Lock or Unlock.
- Rear Defog Relay Command
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The scan tool displays ON/OFF. The state of the rear defog relay within the BCM.
- Rear Defog Switch
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The scan tool displays ON/OFF. The rear defogger switch input to the BCM, where a switch activation is displayed as ON.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.