Well, that Main fuse being that it's a high amperage fuse is most likely inside a plastic casing and can only be inspected through the clear plastic or pulled out and checked with a multimeter. Do you have a multimeter or 12-volt test light? There are 2 wires going to the Starter Motor, one wire is red with a yellow stripe, that wire comes from the Starter Relay, the other wire going to the Starter should read battery voltage(12v) all the time, so that's the easiest way to check the Main fuse, if the fuse is blown the battery voltage (12v) will be missing.
So that's your first check.
The second would be checking the red/yellow wire while the vehicle is being cranked over. Whatever you're using for checking power, put the negative lead on Battery negative and the other lead to what you are testing. You checked both fuses IG Key1 40-amp and IG Key2 40amp?
Usually if it's a starter failure the starter solenoid will still give the notable "click". So, it sounds like there is something else going on here. But verifying the two wires going to the Starter motor is first.
The engine computer is responsible for activating the Starter Relay and checking computer outputs would be done at the starter relay, to see if the computer is grounding the Stater relay control side.
But in the second diagram, those are the two wires you'll be checking first.
The security light turns off when attempting to crank the engine?
Images (Click to enlarge)
Friday, November 18th, 2022 AT 12:37 PM