Short the two battery leads together, this will bypass the solenoid and should turn the starter. But this does not answer the question....it just lets you see if the starter works.
How do you CHECK the solenoid to see if it is GOOD or BAD???
Check the MOM
Starter solenoid is attached to the top of the starter, the starter can be removed and taken to a parts store that has a machine which can check both solenoid and starter, in my area autozone does this free of charge
check battery, check solenoid, check starter
If the starter is bad no. Check battery, starter and solenoid to be sure which is bad.
The Mazda B3000 typically has one starter solenoid, which is part of the starter assembly. This solenoid is responsible for engaging the starter motor when the ignition key is turned. If you're experiencing issues, it’s important to check the solenoid and related components for proper function.
If the battery and starter check out good and you are only getting a single click, the problem lies in the starter solenoid or relay. Not sure where the relay might be but the solenoid is usually where the positive battery from the starter connects to. There are at least two wires at the solenoid - the battery cable and a thin wire. check the remote starter solenoid usually monted on right side of engine bay
Check the starter and the solenoid. Make sure that the cables from the battery to the starter are tight and are sending voltage.
Check battery, cables, starter, starter solenoid, neutral safety switch
Usually one of three reasons. Starter is staying energized from starter switch or starter solenoid is bad internally or bendix gear on the end of the starter is not retracting. Tests: "bump" the starter with a momentary pulse of the key. If it continues to crank after releasing the key it's electrical. If not then probably gear is stuck or damaged. Check gear at flywheel. Should slide in and out of engagement freely. If problem is electrical then locate starter engagement wire at solenoid. And when motor starts check for battery voltage at that wire when disconnected. If it has voltage then suspect switch. If not then check for voltage at solenoid terminal. If voltage then replace solenoid or starter if integral.
All the answers are true. But if you still have problems, check that the connections are tight at the starter and starter solenoid or relay. if this still doesn't help , then you most likely need a new starter solenoid or new starter.
Either your starter solenoid, if not check the neutral safety or clutch safety switch.
Check the starter solenoid and the starter itself. Either one could be stuck and causing the constant engagement. Check the flywheel for damage after you fix the problem.