A problem with the fuel pump will likely manifest as a blown fuse related to the power distribution of the PCM or its associated circuits. You'll need to check the owner's manual for your specific vehicle to locate the fuse box diagrams. Look for fuses related to:
* PCM: This is the most likely candidate. A blown fuse in the PCM circuit could prevent the fuel pump from functioning.
* Ignition System: Issues in the ignition system can prevent the PCM from activating the fuel pump.
To diagnose a fuel pump problem, you should:
1. Consult your owner's manual: This is the first and best place to start. It will show you the fuse box locations and diagrams.
2. Check all fuses visually: Look for any blown fuses (a broken filament or a noticeably darker color). Replace any that are blown.
3. Have the system checked by a mechanic: If no blown fuses are found, a more thorough diagnostic test is necessary to determine the root cause of the problem. It's likely a problem within the PCM itself or the wiring to the fuel pump.
Simply replacing fuses randomly is not recommended. Incorrect fuse replacement can cause further damage.
