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 MANUALSHYUNDAI2011SANTA FE GLS, 3.5 G, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 21 (ENGINE CONTROL SYSTEM DIAGNOSIS (2 OF 2) - G2.4 DOHC)DTC P0620: ALTERNATOR CONTROL CIRCUITSCANTOOL DIAGNOSTICSMONITOR GDS DATA
2011 Hyundai Santa Fe GLS, 3.5 G, AWD
Monitor GDS Data
2011 Hyundai Santa Fe GLS, 3.5 G, AWDSECTION Monitor GDS Data
WARNING: This page is about a different variant/trim than selected.
- Connect GDS to Data Link Connector (DLC).
- Engine start.
- Monitor "Alternator duty cycle, PWM signal" parameter on GDS.
- Are the parameters displayed correctly?
YES
- Fault is intermittent caused by poor contact in the sensor's and/or PCM's connector or was repaired and PCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Go to "TERMINAL & CONNECTOR INSPECTION " procedure.
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.