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 MANUALSHYUNDAI2013SANTA FE XL PREMIUMREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM DIAGNOSIS (3 OF 3)DTC P2123: ACCELERATOR POSITION SENSOR 1 SIGNAL CIRCUIT HIGH INPUTWIRING INSPECTIONGROUND CIRCUIT INSPECTION
2013 Hyundai Santa Fe XL Premium
Ground Circuit Inspection
2013 Hyundai Santa Fe XL PremiumSECTION Ground Circuit Inspection
- Check open in harness
- IG "OFF". Disconnect APS connector.
- Measure voltage between APS1 power terminal of APS harness connector and chassis ground. (Measurement "A")
- Measure voltage between APS1 power and APS1 ground terminals of APS harness connector. (Measurement "B")
Specification : Voltage difference between measurement "A" and "B" is below 200mV.
- Is the measured voltage within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Repair contact resistance or open in harness and go to "VERIFICATION OF VEHICLE REPAIR " 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.