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.
Input 2
Auto Headlamps: The scan tool displays the status of the auto headlamps. The scan tool displays Active when the auto headlamps are ON.
Auto Headlamps Enabled: The scan tool displays the status of the auto headlamps feature. The scan tool displays Yes when the auto headlamps feature has been enable and No when they have been disabled.
Courtesy Lamp Relay: The scan tool displays the state of the courtesy lamp relay. The scan tool displays ON when the BCM commands the courtesy lamps On by providing a ground for the courtesy lamp relay.
Daytime Running Lamps: The scan tool displays the status of the daytime running lamps (DRL).
The scan tool displays Active when the DRL are ON.
Dim Pot Input: The scan tool displays Active indicating the presents of the IP dimmer switch (thumb wheel) signal when the park lamps are ON.
Dome Lamp Switch: The scan tool displays the position of the dome lamp switch. The scan tool displays On when the IP dimmer switch is adjusted to the full up position, past the detent, activating the dome lamp switch.
Dome Override Switch: The scan tool displays the position of the dome override switch. The scan tool displays On when the switch is activated requesting the BCM to override the interior lighting request signals. The interior lighting can still be activated with the dome lamp switch.
Flash to Pass Switch: The scan tool displays the position of the flash to pass switch. The scan tool displays On when the switch is pulled to activate the high beams momentarily while the switch is held.
Front Fog Lamp Switch: The scan tool displays the position of the front fog lamp switch. The scan tool displays On when the front fog lamp switch is activated with the park lamps or headlamps ON.
Headlamp Relay Feedback: The scan tool displays the state of the headlamps. The scan tool displays On when the headlamp and panel dimmer switch is manually turned to the ON position. The scan tool also displays On when the switch is in the AUTO position and the ambient light sensor is in its Dark state.
Headlamp Request Switch: The scan tool displays the state of the headlamp switch. The scan tool displays Active when the headlamp switch is manually turned to the ON position.
High Beam Switch: The scan tool displays the position of the high beam switch. The scan tool displays On when the high beam switch is activated.
Interior Lamp Request: The scan tool displays Active if a interior lamp request signal has been received from the RFA module.
Left Turn Signal: The scan tool displays the position of the turn signal switch. The scan tool displays On when the left turn signal is activated. The BCM uses this data to activate the turn signal reminder chime after the vehicle has traveled 0.75 miles with the turn signal switch activated.
Park Lamps: The scan tool displays the state of the park lamps. The scan tool displays On when the park lamps are activated by the BCM or the headlamp switch.
Rear Fog Lamp Switch: The scan tool displays the position of the rear fog lamp switch. The scan tool displays On when the rear fog lamp switch is activated with the park lamps or headlamps ON.
Right Turn Signal: The scan tool displays the position of the turn signal switch. The scan tool displays On when the right turn signal is activated. The BCM uses this data to activate the turn signal reminder chime after the vehicle has traveled 0.75 miles with the turn signal switch activated.
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.