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.

2004 Hyundai XG350 BaseFACTORY OEM SERVICE PROCEDURE

Using Voltmeter

Disconnect the throttle position sensor connector.
Measure resistance between terminal 3 (sensor ground) and terminal 1 (sensor power).
Standard value: 3.5~6.5 kΩ
Connect a pointer type ohmmeter between terminal 3 (sensor ground) and terminal 2 (sensor output).
Operate the throttle valve slowly from the idle position to the full open position and check that the resistance changes smoothly in proportion with the throttle valve opening angle.
If the resistance is out of specification, or fails to change smoothly, replace the throttle position sensor.
Tightening torque

TP Sensor: 1.5~2.5 Nm (15~25 kg.cm, 1.1~1.8 lb.ft)

Fig 1: Checking TP Sensor Using Multi-Meter
Courtesy of HYUNDAI MOTOR CO.

Factory Service Tools

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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.