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.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSHYUNDAI2003XG350 BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)EXTERNAL PAGESDIFFERENT CARSECTION 13 (FUEL SYSTEM)MFI CONTROL SYSTEMELECTRIC THROTTLE SYSTEMSENSOR CHECKING (IDLE SWITCH)USING VOLTMETER

2003 Hyundai XG350 Base

Using Voltmeter

2003 Hyundai XG350 BaseSECTION Using Voltmeter

WARNING: This page is about a different car, the 2004 Hyundai XG350. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the APS connector.
Check the continuity between terminal 4 and sensor ground.

Fig 1: Idle Switch Voltage/Continuity Table
Courtesy of HYUNDAI MOTOR CO.
If out of specification, replace the throttle position sensor.

Fig 2: Checking Idle Switch Continuity
Courtesy of HYUNDAI MOTOR CO.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

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.