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.
Component Function Check
- CHECK FUNCTION 1
- Disconnect vehicle security horn relay.
- Perform "VEHICLE SECURITY HORN" in "ACTIVE TEST" mode of "THEFT ALM" of "BCM" using CONSULT.
- Check the horn operation.
Test item
Description
VEHICLE SECURITY HORN
ON
Horn
Sounds (for 0.5 sec)
Is the operation normal?
YES
GO TO 2.
NO
Go to Diagnosis Procedure .
- CHECK FUNCTION 2
- Reconnect vehicle security horn relay.
- Disconnect horn relay.
- Perform "VEHICLE SECURITY HORN" in "ACTIVE TEST" mode of "THEFT ALM" of "BCM" using CONSULT.
- Check the horn operation.
Test item
Description
VEHICLE SECURITY HORN
ON
Vehicle security horn
Sounds (for 0.5 sec)
Is the operation normal?
YES
INSPECTION END
NO
Go to Diagnosis Procedure .
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.