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 MANUALSHYUNDAI1991SONATA V6-3.0LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSDATA LINK CONNECTORDESCRIPTION AND OPERATION
1991 Hyundai Sonata V6-3.0L
Data Link Connector: Description and Operation
1991 Hyundai Sonata V6-3.0LSECTION Description and Operation
Diagnostic Connector Location:
The Diagnostic Check Connector, located in the passenger compartment is used to extract fault code information. The complete procedures for extracting these codes is contained in DIAGNOSIS AND TESTING PROCEDURES under ON-BOARD DIAGNOSTICS.
RENDER: 1.0x
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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.