Car shut off while driving found PCM fuse blown

Hello,

Your PCM fuse keeps blowing because you have a short to ground somewhere in the electrical circuit that the fuse is protecting. This happens because of Ohm's Law, the laws that govern electricity. Ohm's Law states that if one of the properties of electricity remains constant[Voltage- In a vehicle voltage is constant[battery voltage]] and on of the remaining two go down[Resistance- The resistance goes to zero when there is a direct path back to the battery negative terminal] then the last property[Amperage/Current- Amperage goes to battery amperage] MUST go up proportionally. The amperage exceeds the amperage rating of the fuse, and, "POP", the fuse blows protecting the component[s] in the circuit[s] that is was protecting, just like it's supposed to.In the diagrams down below I have included the wiring diagrams for your vehicle's engine management circuits as well as a guide on how to shorts to ground in an automotive electrical circuit. You will need to use a Digital Multi-meter [DMM] to go through these guides, so here is a link below explaining how to use one, if needed:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Please go through these guides and get back to us with what you find out.

Thanks,
Alex
2CarPros

Hello,

In the diagrams down below I have included the diagram and callout for the Central Junction Box CJB which is located below and to the left of the steering wheel, by the brake pedal. Please let us know what you find out.

Thanks,
Alex
2CarPros

Hello again,

In the diagrams down below I have included the wiring diagram for your vehicle's charging circuit as well as guides for how to find unwanted resistance in an automotive circuit via voltage drop and how to find opens in an automotive circuit. Please go through these guides and get back to us with what you find out.

Thanks,
Alex
2CarPros

Hello again,

Okay, so in the diagrams down below I have included the Original Equipment Manufacturer [OEM] wiring diagram for the alternator. It basically shows the exact same thing as the other charging system wiring diagram. I have also included a guide for how to induce an intermittent problem to an automotive circuit for you as well. Please report back with what you find out.

Thanks,
Alex
2CarPros

Hello again,

Sounds great. We are happy to hear you got everything fixed.

Thanks,
Alex
2CarPros