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.
Active Check Function
Operation Description
When a door is locked or unlocked by key fob operation, the vehicle turn signals flash and the horn sounds to verify operation.
- When a button on the key fob is operated, the signal is sent from the remote controller and received by the keyless remote entry receiver.
- The received signal is sent to the BCM and compared with the registered ID number.
- If the ID number matches, the BCM uses communication to send the turn signal flashing and horn signal to the IPDM E/R.
- The IPDM E/R flashes the turn signal lamps and sounds the horn for each key fob operation.
When a door is locked or unlocked by key fob operation, the turn signal lamps are flashed and the horn sounds to verify operation.
- When a button on the key fob is operated, the signal is sent from the key fob and received by the remote keyless entry receiver.
- The received signal is sent from the remote keyless entry receiver terminal 2 to BCM terminal 20 and compared with the registered ID number.
- If the ID number matches, the BCM uses communication to send the turn signal flash signal to the IPDM E./R.
- The IPDM E/R supplies voltage, turning on each turn signal lamp.
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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.
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