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.
Body Control System (Diagnostics): General Description: Inspection
Before performing diagnosis, check the following items which might affect body control system problems.
- Measure the battery voltage and check electrolyte.NOTE: For HEV model, check the 12 volt auxiliary battery.
Standard voltage: 12 V or more
Specific gravity: 1.260 or more
- Check the fuse condition.
Make sure that ampere of the fuse is setting value, and it is not blown out.
- Check the connecting condition of harness and harness connector.
- Confirm settings of body integrated unit are corresponded to vehicle equipment. < Ref. to OPERATION , Registration Body Integrated Unit.>
- Make sure that the User Customizing of the body integrated unit matches the vehicle equipment. < Ref. to OPERATION , User Customizing.>
- Confirm "Factory initial setting" of body integrated unit registrations is "Market".
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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.