Fuel pump fuse location

Sure, it's possible but so are dozens of other things. You really need to do some testing during the failure to have any idea if you are on the right track or not.

All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.

Every engine requires spark, fuel and compression to run. That's what we have to look for.

These are the basics that need to be tested and will give us the info required to isolate a cause.

1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.

2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.

3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.

Once you have determined which of these functions has dropped out,
you will know which system is having the problem.

You need to test what is missing when it could nor start, fuel or ignition.

If it is fuel that is missing, the PGM-FI main relay can be the cause.

Hi nando39,

Dash lights flashing means it is not normal.
1. Faulty ignition switch. Try applying remote power supply to BlackYellow wire at distributor and start.
2. ECU fault. Immo fault would not allow cranking.

Hi nando39,

You are welcomed and thanks for the appreciation, it makes my day ;)

Anything else feel free to ask.

Have a nice day and hope you get the problem solved.

Fuel pump cut-off relays are similar to inertia switches, they have the ability to cut-off fuel supply in case of an impact. A fuel pump relay is just a simple on/off switch type relay, which is only activated by the vehicle's computer system.

Hi nando39,

If you suspect the fuel pump to be faulty, try unplugging the connector and crank to see if the fuse blows and if the dash lights flickers. Repeat this with the PGM-FI main relay unplugged if it is not the fuel pump. You definitely do not have fuel but the problem is, is it the control that is faulty not supplying power to the fuelpump or is it the fuel pump that is faulty.

Seems there is a major shorting somewhere otherwise the 50 A fuse would not blow easily. It is possible for the ECM to be faulty but ECM seldom produces major shorts.

Hi nando39,

We seems to be going in circles.

If you have an ECM, I guess now its the time to test it.

By the way you mentioned that fuel is not present and the fuel pump worked if direct voltage is applied. Why don't you try applying direct voltage and try starting.

Hi nando39,

Did you test both ends of Fuse # 13 forpower supply?

No power at fuse # 13 ( 7.5 A). Test if fuse # 11 and # 12 have voltage under same conditions as described.

If no to above, Check Fuse # 41 (100 A ) underhood.

Hi nando39,

Fuse 11, 12 and 13 are on the same circuit and your diagnosis shows a faulty fuse junction box.

Without power from Fuse # 13, the fuel pump would not continue running after the ignition switch is returned from start.

Apply battery voltage to Fuse 13 and see if you are able to start.

Hi nando39,

The Black/Yellow wire for fuel pump runs through the fusebox before going to fuel pump at tank.

Fuse 13 has no power supply.

The fuse box has internal fault and is not transmitting power supply.