Fuel Pump control module: where is it?
#2
the fuel pump is controlled by the fuel pump relay
the fuel pump relay is hot from the fuse panel
the relay is activated by the ecm providing a ground for it (through an internal transistor)
the fuel pump relay should be in one of the relay boxes in the engine bay
i dont see a module like you describe in wither a 99 or 2002 manual
both circuits seem to function identically (diff pins at ecm though)
the fuel pump relay is hot from the fuse panel
the relay is activated by the ecm providing a ground for it (through an internal transistor)
the fuel pump relay should be in one of the relay boxes in the engine bay
i dont see a module like you describe in wither a 99 or 2002 manual
both circuits seem to function identically (diff pins at ecm though)
#6
The "fcpm" module does NOT exist. The ECM controls the fuel pump relay as explained above. With the Ign. sw. ON the pump will operate for a couple of seconds or so only, OR when the ECM receives a signal from the Reference Crank Pos. Sensor indicating that the engine has started, the pump will run/continue to run.
Last edited by P. Samson; 09-26-2007 at 06:33 PM.
#9
In the A32 The FPCM controls the fuel flow, basically it is a voltage amplifier to the fuel pump, and it is controlled by the ECU. A32 ECU's have a Fuel Pump Relay (FPR) output AND a FPCM (FPC) output.
This does not mean that your 2000 has a FPCM.
Last edited by made in china; 10-06-2007 at 12:29 PM.
#10
made in china...........I don't know what manuals you're looking at, but I've just gone through the 2000 & 2001 and 2002 manuals and there is no FPCM, at least I can't find it. The fuel pump motor gets full battery voltage via the Ignition Relay (when the ignition switch is in On or Start) and the ECM controlled Fuel Pump Relay if the ECM gets an engine run signal from the Crank Pos. ref. Sensor. The ECM I believe must have the pump run time circuit that only allows the fuel pump to run 2 or 3 secs. if the ECM does not get the start/run signal. I looked through the electrical component location diagrams, the wiring schematics and the harness connector diagrams. No FPCM. The only additional component in the fuel pump motor circuit is a condenser. If you are going by a Haynes Manual, it's not reliable for the Gen. 5 cars.
Last edited by P. Samson; 10-05-2007 at 10:40 PM.
#11
made in china...........I don't know what manuals you're looking at, but I've just gone through the 2000 & 2001 and 2002 manuals and there is no FPCM, at least I can't find it. The fuel pump motor gets full battery voltage via the Ignition Relay (when the ignition switch is in On or Start) and the ECM controlled Fuel Pump Relay if the ECM gets an engine run signal from the Crank Pos. ref. Sensor. The ECM I believe must have the pump run time circuit that only allows the fuel pump to run 2 or 3 secs. if the ECM does not get the start/run signal. I looked through the electrical component location diagrams, the wiring schematics and the harness connector diagrams. No FPCM. The only additional component in the fuel pump motor circuit is a condenser. If you are going by a Haynes Manual, it's not reliable for the Gen. 5 cars.
#12
I know this thread is over 3 years old, but does anyone know where the fuel pump relay is located on a 2001 SE 20th anniversary? I'm having starting issues which I THINK I've narrowed down to a failing fuel pump, but I don't want to just start throwing parts on the car.
Basically, sometimes the car would start and sometimes it wouldn't. I had 2 instances where the car stalled out while driving. Now, the car won't start at all and I don't hear the hum of the fuel pump upon starting. I have a good battery and starter.
Either the pump is bad, or the pump isn't getting the signal to send the fuel.
Someone please help!
Basically, sometimes the car would start and sometimes it wouldn't. I had 2 instances where the car stalled out while driving. Now, the car won't start at all and I don't hear the hum of the fuel pump upon starting. I have a good battery and starter.
Either the pump is bad, or the pump isn't getting the signal to send the fuel.
Someone please help!
#13
I know this thread is over 3 years old, but does anyone know where the fuel pump relay is located on a 2001 SE 20th anniversary? I'm having starting issues which I THINK I've narrowed down to a failing fuel pump, but I don't want to just start throwing parts on the car.
Basically, sometimes the car would start and sometimes it wouldn't. I had 2 instances where the car stalled out while driving. Now, the car won't start at all and I don't hear the hum of the fuel pump upon starting. I have a good battery and starter.
Either the pump is bad, or the pump isn't getting the signal to send the fuel.
Someone please help!
Basically, sometimes the car would start and sometimes it wouldn't. I had 2 instances where the car stalled out while driving. Now, the car won't start at all and I don't hear the hum of the fuel pump upon starting. I have a good battery and starter.
Either the pump is bad, or the pump isn't getting the signal to send the fuel.
Someone please help!
#16
On a sidenote on this thread.........over three years ago the OP was asking where the Fuel Pump Control Module (FPCM) was on his 2000 Maxi. I checked the FSMs that I had at that time and I could not locate a FPCM as I stated above. Not long after that, I located another FSM copy which was titled "2000.5". That 2000.5 FSM (must be for cars assembled after about Sept. '99 because mine was built in Sept/99.......it has this FPCM in the trunk) does refer to the FPCM (and a dropping resistor) which controls ("high" and "low") voltage to the fuel pump. I believe I covered this in another thread quite awhile ago. These "late" 2000 cars are the only ones that appear to use/have a FPCM. I did eat crow by the way.
#18
OK, I removed the kick panel, and even moved that corner of the carpet and I don't see any relays anywhere. Does that metal box labeled 'ABS control unit' also need to be removed? Is there a chance that they put the relay in different locations on the same model vehicle?
#19
Those two relays one of which is the FP relay do look like they could be somewhat covered up by/behind the ABS/TCS control unit, so maybe you'll have to move it aside to access the relay. The relays appear to be located at that location on all Gen. 5 and 5.5 cars.
#20
I took everything apart, moved the ABS control unit, removed the lower dash panel to see if it's up above the fuse panel somewhere. Nothing. I even checked the trunk where the relay is on the older max's. Again, nothing. I'm beginning to think it doesn't exist on this car...
#21
It suddenly hit me.........it's in front of the firewall, and I should have twigged on the ABS control unit since it's in the engine compartment (duh). Look outboard/around/under the ABS control unit (left side of the engine compartment just in front of the firewall).
Last edited by P. Samson; 12-29-2010 at 01:00 PM.
#25
There's a pretty good drawing in the EL section of the FSM that shows them at what appears to be at a cutout (maybe just inside this cutout opening) in the sheetmetal, inside the kick panel, and at about the same height as the lower door hinge. It shows a large wiring bundle running upwards just in front of this fairly large cutout. Relay should be blue.
Last edited by P. Samson; 12-29-2010 at 01:35 PM.
#26
Found it! That was the problem as well, thank god. Both of those relays are attached to a bracket that basically holds them inside the metal frame of the body. I didn't even know they were there until i took the 2 screws holding the bracket out, and pulled the metal out. That bracket was also covered by that extremely sticky, black insulation material.
Thank you so much for your help!!!
Thank you so much for your help!!!
#27
Actually the Fuel Pump Control Module is located in the trunk on the driver's side. It's below the fuel lid opener actuator. According to a picture that I've seen on ALLDATA. Now, if it's actually there? I have no idea. But the program does show it has an FPCM and no it's not the ECM.
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