I purchased a 2015 Kia Sedona over the summer, and while doing a thorough inspection after getting the van home, I discovered someone had bypassed the fuel pump circuit and hot-wired a wire directly from the underhood fuse box (by splicing into another circuit using one of those add-a-fuse things) straight to the fuel pump. The fuse they tapped into was one that operates only when the ignition is turned on, so the fuel pump runs all the time whenever you set the car to the "ON" position with the push button, even when the engine is off.
If I remove the rigged up wire, the engine will not start and fuel pump does not run, so there's something wrong with the fuel pump circuit.
I took it to a KIA dealer and their technician told me the whole underhood fuse box needs replaced because they suspect the fuel pump relay is bad. He tells me the fuel pump relay is integrated into the fuse box.
Here is their description:
30263 FUEL PUMP POWER CIRCUIT BYPASSED FROM FUSE BLOCK TO PUMP
VERIFY RED WIRE [rigged up wire] GOES FROM FUSE BLOCK TO FUEL PUMP. INSPECT FUEL PUMP
FUSE AND SENSOR 3 FUSE. VERIFY FUSES ARE IN WORKING ORDER. REMOVE
CENTER CONSOLE TO INSPECT 12V FROM FUSE BLOCK TO FUEL PUMP AT CONNECTOR
EF11. NO POWER SUPPLIED FROM FUEL PUMP RELAY. RELAY INTEGRATED IN
ENGINE FUSE BLOCK. TEST CONTROL SIDE OF FUEL PUMP RELAY FROM ENGINE
ROOM FUSE BLOCK TO PCM CONNECTOR E100-A. CONTROL CIRCUIT TESTED GOOD.
DIAGNOSE FAULT TO BE IN ENGINE ROOM FUSE BLOCK CAUSING 12V TO NO BE
SUPPLIED TO FUEL PUMP.
In most cars, the fuse box is exactly that, just a plastic box with fuses and relays plugged into it. While I don't doubt the technician's diagnosis, I've never heard of relays being integrated into a fuse box assembly. Is this common and has anyone heard of this before? Seems like an awful dumb idea to me, relays don't last forever and there should be a means of replacing them other than swapping out the whole fuse box. Seems crazy to me.
If I remove the rigged up wire, the engine will not start and fuel pump does not run, so there's something wrong with the fuel pump circuit.
I took it to a KIA dealer and their technician told me the whole underhood fuse box needs replaced because they suspect the fuel pump relay is bad. He tells me the fuel pump relay is integrated into the fuse box.
Here is their description:
30263 FUEL PUMP POWER CIRCUIT BYPASSED FROM FUSE BLOCK TO PUMP
VERIFY RED WIRE [rigged up wire] GOES FROM FUSE BLOCK TO FUEL PUMP. INSPECT FUEL PUMP
FUSE AND SENSOR 3 FUSE. VERIFY FUSES ARE IN WORKING ORDER. REMOVE
CENTER CONSOLE TO INSPECT 12V FROM FUSE BLOCK TO FUEL PUMP AT CONNECTOR
EF11. NO POWER SUPPLIED FROM FUEL PUMP RELAY. RELAY INTEGRATED IN
ENGINE FUSE BLOCK. TEST CONTROL SIDE OF FUEL PUMP RELAY FROM ENGINE
ROOM FUSE BLOCK TO PCM CONNECTOR E100-A. CONTROL CIRCUIT TESTED GOOD.
DIAGNOSE FAULT TO BE IN ENGINE ROOM FUSE BLOCK CAUSING 12V TO NO BE
SUPPLIED TO FUEL PUMP.
In most cars, the fuse box is exactly that, just a plastic box with fuses and relays plugged into it. While I don't doubt the technician's diagnosis, I've never heard of relays being integrated into a fuse box assembly. Is this common and has anyone heard of this before? Seems like an awful dumb idea to me, relays don't last forever and there should be a means of replacing them other than swapping out the whole fuse box. Seems crazy to me.