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 DIAGNOSISHEATING AND AIR CONDITIONINGCOMPRESSOR CLUTCH RELAYTESTING AND INSPECTION
1991 Hyundai Sonata V6-3.0L
Compressor Clutch Relay: Testing and Inspection
1991 Hyundai Sonata V6-3.0LSECTION Testing and Inspection
Air Conditioner Relay Location:
To test the Air Conditioning Relay, located in the engine compartment, proceed as follows.
Fig. 6 Condenser Fan Relay Terminal Identification:
Air Conditioner Control System:
1. Remove the Air Conditioning Relay.
2. Test terminals L and B for continuity, there should be no continuity.
3. Apply 12v power across terminals S1 and S2.
4. Test terminals L and B for continuity, there should be continuity.
5. If the relay fails either test replace the relay.
NOTE: In referencing the wiring schematic in ELECTRONIC AND ELECTRICAL DIAGRAMS, the terminals 2 and 4 correlate to terminals L and B as marked on the relay. Additionally terminals 1 and 3 correlate to S1 and S2 as marked on the relay.
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.