Have a 03 ranger . Replace fuel pump relay and fuses. At fuel pump I only have 3 .3 volts In yellow wire with white tracer .with key on. Can you help point me in right direction. THANK YOU

 

Welcome to the forum

Yellow/white wire is for the sender/fuel gauge, not the pump, and 3 to 5volts is correct

Pink/black wire is the 12volts for the pump in the tank, but it will only have 12volts for 2 seconds when key is turned on, you can turn key off and on and will get 2 seconds of 12volts each time
After the 2 seconds you should see 5 to 8volts, no amps just volts from the computers monitor for fuel pump power

If no 12volts on pink/black wire for the 2 seconds then look in the cab, passenger side foot well, up on firewall behind glove box, that's the Inertia switch, looks like this: https://www.explorerforum.com/forums...jpg?1583516289

It has the pink/black wire that runs back to gas tank and a green wire that comes from the Fuel Pump relay in the engine bay fuse box, this is where the 12volts comes from
On the top of inertia switch is a red button, if its been popped up then vehicle has been in a accident, an "tripped" the switch cutting the 12v to pump
Press button back down and it will temporarily reset, temporarily being the key word, because if you slam a door or go off a curd it will most likely "trip" again

You can test green wire for 12v for the 2 seconds using key on off, if nothing then you will go to engine bay and the fuel pump relay
There is a fuel pump fuse and the fuel pump relay, both need to be tested

 

I have no power in the green with yellow tracer coming into relay. Should I check at the power distribution box and go from there. Or is there something else I need to check .

 

Green/yellow wire will only have 12v when key is first turned on, and just for 2 seconds

Pull out the Fuel Pump(FP) relay in engine fuse box
Key OFF
Test each slot in FP relay base, one should have 12volts full time, that's from the FP fuse

Turn on the key
Retest slots, a 2nd slot should now have 12volt thats from PCM relay


2003 FP relay is most likely a Micro Relay, so slots look like this: https://www.gtsparkplugs.com/images/...lay-wiring.jpg

30 or 87 should be key OFF full time 12volt power, doesn't matter which one, from the FP fuse
If you jumper 30 and 87 slots together you should have 12v at green/yellow wire at inertia switch and also 12v on pink/black wire if switch is OK, then also 12v at the pink/black wire at the gas tank end

87A may or may not be there, not used in this application in any case
85 and 86 are to turn on and off the relay, one of these slots should have 12v with key on, it doesn't turn on the relay, the other one, 85 or 86, is used by the computer to ground the relay to activate it that's the control wire

The other type of relay Ford used is the Mini Relay, looks like this: https://www.gtsparkplugs.com/images/...iring-840x.jpg
Same numbers do the same things, just a larger relay

Battery+ ----------FP fuse----------FP relay-----------inertia switch-----------------------------------gas tank fuel pump connector-------------Ground for fuel pump motor