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
- Battery Voltage Signal
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The scan tool displays the current state of the battery in volts.
- Courtesy Lamp Output
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The scan tool displays On/Off to indicate the current state of the interior lamps as commanded by the body control module. The scan tool display will indicate On when the lamps are commanded On
- DRL Status
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The scan tool displays On/Off. This output displays the commanded state of the daytime running lamp relay located inside the BCM. The scan tool display will indicate On when the lamps are commanded On.
- Horn Relay Command
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The scan tool displays On/Off. This output displays the commanded state of the horn relay located inside the BCM. The scan tool display will indicate On when the horn is commanded On.
- Remote Lock Output
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The scan tool displays On/Off. This input displays On when the remote keyless entry transmitter lock button is pressed.
- Remote Unlock Output
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The scan tool displays On/Off. This input displays On when the remote keyless entry transmitter unlock button is pressed.
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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.