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
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The scan tool displays the value of the battery voltage.
- Ignition 0
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The scan tool displays On when the ignition switch is in the ACCESSORY, RUN or CRANK position.
- Ignition 1
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The scan tool displays On when the ignition switch is in the RUN or CRANK position.
- Ignition 3
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The scan tool displays On when the ignition switch is in the RUN position.
- Ignition Accessory
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The scan tool displays Active when the ignition switch is in the ACCESSORY or RUN position.
- Key In Ignition
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The scan tool displays Yes when the ignition key is inserted into the ignition switch cylinder. The BCM uses this data to control the chime feature.
- SWC Switch Voltage
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The scan tool displays the voltage read by BCM at steering wheel control input.
- SWC Switch Power
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The scan tool display the state of the switched power output to the steering wheel switches and rear wiper.
NO RELATED
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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.