Symptoms of a Faulty Automatic Transmission Solenoid Valve?

[SanAngela]

When an automatic transmission solenoid valve is damaged, it mainly exhibits the following symptoms: 1. Solenoid coil short circuit or open circuit: First, use a multimeter to measure its continuity. If the resistance approaches zero or infinity, it indicates a short circuit or open circuit in the coil. 2. Issues with the solenoid valve plug/socket: If the solenoid valve has a plug/socket, problems such as issues with the metal spring in the socket or wiring problems on the plug (e.g., the power wire is connected to the ground wire) may prevent power from reaching the coil. 3. Problems with the solenoid valve spool: Under normal pressure of the medium passing through the solenoid valve, if pressing the red manual button on the solenoid valve produces no response (no change in the medium's flow), it indicates damage to the valve spool.