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
Ambient Light Sensor: The scan tool displays volts. The ambient light sensor input signal, 0.09-4.75 volts is the normal operating range.
Battery Voltage: The scan tool displays 0-20 volts. The voltage as received on the battery positive voltage circuit of the module.
Control Power: The scan tool displays On/Off. The state of control power.
Daytime Running Lamp: The scan tool displays On/Off. The commanded state of the daytime running lamp relay.
Drivers Door Jamb Sw.: The scan tool displays On/Off. The state of the drivers door jamb switch. On indicates the door is open and Off indicates the door is closed.
Flash to Pass Switch: The scan tool displays On/Off. The state of the flash to pass switch.
Front Fog Lamp Relay: The scan tool displays On/Off. The commanded state of the front fog lamp relay.
Front Fog Lamp Switch: The scan tool displays On/Off. The state of the front fog lamp switch.
Headlamp Switch: The scan tool displays On/Off. The state of the headlamp switch. On indicates the headlamps are requested on.
High Beam - Flash to Pa: The scan tool displays On/Off. The commanded state of the high beam relay.
Inadvertent Power Input: The scan tool displays On/Off. The state of the inadvertent power.
Inadvertent Power Relay: The scan tool displays On/Off. The commanded state of the inadvertent power relay.
Incandescent Dim 1: The scan tool displays 0-100%. The state of the incandescent lamp ground circuit.
Interior Dim Pot: The scan tool displays 0-5.0 volts. The IP dimmer switch input signal, 0.09-4.75 volts is the normal operating range.
Interior Lamp Switch: The scan tool displays OFF/DOOR/ON. The position of the interior lamp switch.
Left Rear Door Jamb Sw.: The scan tool displays On/Off. The state of the left rear door jamb switch. On indicates the door is open and Off indicates the door is closed.
Lights On with Wipers: The scan tool displays On/Off. The state of the wiper/washer system.
Low Beam Output: The scan tool displays On/Off. The commanded state of the low beam relay.
Lt. Turning Signal Sw.: The scan tool displays On/Off. The state of the left turn signal switch.
Non-Overhead Lamps Rela: The scan tool displays On/Off. The commanded state of the non-overhead lamps relay.
Overhead Lamps Output: The scan tool displays On/Off. The commanded state of the overhead lamps.
Pass. Door Jamb Sw.: The scan tool displays On/Off. The state of the right front door jamb switch. On indicates the door is open and Off indicates the door is closed.
Park Lamp: The scan tool displays On/Off. The state of the park lamp switch.
Park Lamp Relay Output: The scan tool displays On/Off. The commanded state of the park lamp relay.
Rear Fog Lamp Relay: The scan tool displays On/Off. The commanded state of the rear fog lamp relay.
Rear Fog Lamp Switch: The scan tool displays On/Off. The state of the rear fog lamp switch.
Rt. Rear Door Jamb Sw.: The scan tool displays On/Off. The state of the right rear door jamb switch. On indicates the door is open and Off indicates the door is closed.
Rt. Turning Signal Sw.: The scan tool displays On/Off. The state of the right turn signal switch.
Reverse Lamp Relay: The scan tool displays On/Off. The commanded state of the reverse lamp relay.
Twilight Delay Pot: The scan tool displays volts. The twilight delay switch input signal, 0.09-5.0 volts is the normal operating range.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.