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.
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HOMESERVICE MANUALSHYUNDAI2002SONATA L4-2.4LREPAIR AND DIAGNOSISSTARTING AND CHARGINGPOWER AND GROUND DISTRIBUTIONTIMER/CONTROL UNITTESTING AND INSPECTION
2002 Hyundai Sonata L4-2.4L
Timer/Control Unit: Testing and Inspection
2002 Hyundai Sonata L4-2.4LSECTION Testing and Inspection
INSPECTION
While operating the components, check whether the operations are normal compared to the timing chart.
ETACS FUNCTION
1. Vehicle speed sensing intermittent wiper
2. Washer
3. Rear window defogger
4. Seat belt warning
5. Ignition key hole illumination
6. Decayed out room lamp
7. Key operated warning
8. Ignition key reminder
9. Tail lamp auto cut
10. Power window timer
11. Outside door key hole illumination
12. Central door lock/unlock
13. Crash door unlock
14. Rear fog lamp control
While operating the components, check whether the operations are normal compared to the timing chart.
ETACS FUNCTION
1. Vehicle speed sensing intermittent wiper
2. Washer
3. Rear window defogger
4. Seat belt warning
5. Ignition key hole illumination
6. Decayed out room lamp
7. Key operated warning
8. Ignition key reminder
9. Tail lamp auto cut
10. Power window timer
11. Outside door key hole illumination
12. Central door lock/unlock
13. Crash door unlock
14. Rear fog lamp control
RENDER: 1.0x
NO RELATED
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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.