Replaced the start relay and I am a electrician
If your saying the starter motor won't crank? Make sure battery has a full charge and connections all good. Check starter wiring circuits. I'd have to make sure security system doesn't have a problem?
If there is a starter relay, on load side of relay, one terminal is hot all the time, If you use jumper wire between the proper two terminals, on load side of relay, the starter should crank. If you try that, make sure tranny is in park or neutral and functional parking brake is set. With automotive relays, they have two sides, coil/control side and the other side is switch/load side that carries voltage to starter. Even if we get starter motor to crank, if security system is involved, it still won't start.
If you have proper voltage and ground at the starter motor and no starter action, I'd have to check starter motor.
Note the wiring diagram, at the crank relay, terminal 30 hot all the time. When relay is energized, terminal 87 carries voltage to starter. Note, the starter motor has two voltage circuits, the other circuit comes from battery, is hot all the time. The starter should ground through engine block.
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