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.

2007 Hyundai Elantra GLS, AutomaticFACTORY OEM SERVICE PROCEDURE

PWM (Pulse Width Modulation) Solenoid Valve Control Feature

Fig 1: PWM Solenoid Valve Pressure Graph

PWM solenoid valve is controlled linearly according to the duty ratio.

Oil pressure range: 0~4.3 kgf/cm² (0~422kpa, 0~61.2psi)

VOLTAGE AND RESISTANCE SPECIFICATION

Type	3way & Normal High
Supply voltage	12V
Coil resistance	3.2±0.2Ω (at 25°C, 77°F)
Cycle	50Hz

Fig 2: Identifying PWM Solenoid Valve

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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.