A zero ohmmeter reading between the casing of a solenoid and a disconnected wire indicates what?

A zero ohmmeter reading between the casing of a solenoid and a disconnected wire signifies that there is a direct electrical connection (a short) between the coil of the solenoid and its casing. This indicates that the internal winding of the coil has likely failed, causing it to make contact with the casing. This situation is problematic as it poses a safety hazard and jeopardizes the functionality of the device.

A reading of zero ohms shows that there is no resistance between the two points, which typically indicates a fault condition, such as a short circuit. In a properly functioning solenoid, you would expect to see a certain resistance value reflecting the coil’s winding without any unintended contacts to the casing. This reinforces the assessment of the solenoid's integrity, confirming that the coil is indeed shorted to the casing and is not operating correctly.