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The VTEC solenoid transforms electrical energy into mechanical energy. Signs of a faulty solenoid include a loud screeching sound from the engine, a sluggish or slow engine and the appearance of the "Check Engine" light. You can test the solenoid if you suspect it isnt working properly. If its not in working condition, you must replace it.

Instructions

1

Turn the ignition to the "On" position.

2

Connect a 12-volt battery to the solenoid wire, and ground the housing. If the solenoid is in working condition, you should hear a clicking sound. If you do not hear a clicking sound, you should ensure a proper connection between the solenoid wire and the ECU.

3

Ensure a proper connection between the yellow solenoid wire and connector "A17" on ECU "A."

4

Drive the vehicle. If the engine seems sluggish or makes loud sounds, turn off the vehicle and replace the faulty solenoid.

A shift solenoid is a component of a vehicles transmission system regulating the transmission fluid levels in a car.

Purpose

A shift solenoid opens and closes the valves that allow hydraulic fluid to flow in and out of a transmission. It is computer-controlled and electronically activated. Its purpose is to allow the vehicles transmission system to function efficiently.

Description

This computerized component of a car automatically controls the transmissions fluid levels, allowing the right amount of fluid to flow in and out of the transmission. The shift solenoid is located on the transmissions internal valve body or on the outside of the transmission case.

Details

If a shift solenoid fails, most likely the vehicle will not be able to shift into low gears or overdrive. Typically when a shift solenoid fails, the car suddenly will not shift properly. They typically fail from corroded or loosely connected cables on the battery.