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Anonymous Posted on Dec 17, 2011

Fuse pump relay isnt recieving any power

The fuse pump relay only has power at the 30 terminal and none at any of the other terminals.

  • Anonymous Dec 17, 2011

    typo that is suppose to be the fuel pump relay under the hood.

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1 Answer

Clifford Beard

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  • Ford Master 1,975 Answers
  • Posted on Dec 17, 2011
Clifford Beard
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Joined: Jan 25, 2011
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There are a couple of fuses as well as a relay ither then wiring problems. Since you're nit getting power to terminal number 30, I would check fuse number 10 (see diagram below) which should be a 20 amp fuse. You should have power at terminal 30 and that's where I would start. Now the PCM relay does provide power also to that relay in the other terminals (can't remember the terminal number without looking). The PCM relay terminal number 30 should be hot at all times. If it is not there is a fusible link in the wiring going to that terminal. You would have to locate the yellow and black wire from there and follow it down to repair and find that. Also you my have a bad ground. Below is a picture with an arrow pointing to the ground you may need to clean and tighten. One last thing would be fuse 18 which is a 15 amp fuse in that same box. Since teminal 30 isn't geting power I would start with fuse number 10 and work from there. The fuse are all the same in all engines but the ground location is a litle different. The ground I showed is for the 4.6 liter engine. If you need any wiring diagrams or any other help, feel free to email me at [email protected] but remind me what we are working on. Don't mind helping and don't worry, there is no charge. I hope this helps...



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Do you have a multi-meter or test light?
There is a fuel pump fuse, in the fuse/relay distribution box, did you check that? That fuse and the fuel pump relay would have a "hot at all times" designation. Use the test light to see if the fuse has power at it. Next move to the FPR, pull it out and check for power. One of the relay terminals (it is #30 designation on the relay) would also be hot at all times (this terminal is coming directly from the fuse). Use the test light to check for that.
Look at the relay: on the side is a descriptor, or a diagram showing the relay terminals usage: #30 is the power feed, #87 is the feed on to the gas tank to the fuel pump. The other two terminals are the "coil side" of relay, #85 and #86, the coil side is what turns the relay on (from a signal from the pcm) and lets power pass to the pump.
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I have 2000 Kia spectra. It shut off while ideling. I have changed the fuel pump and checked fuses/relays. We used a insulated wire and ran it from the battery to the fuel pump relay fuse socket in the...

You need to troubleshoot the relay and terminals. First try a different relay. Another relay in your car may be same part number relay as you pump relay, so check for that. Swap in a known good relay and try it.
If no help, look at relay. Is it 4 terminal or 5 terminal? If 4 terminal, easier to check. One terminal will be your power source, and hot at all times, so check for that-use your jumper wire (if no testlight or voltmeter), stick end in terminal and just touch metal, looking for spark indicating power. If no terminal has power, maybe only hot with key on, so turn key on and check for power. If no power, the feed from battery to fuse block is lost. If you have one power source, another terminal will be to the pump, the one you turned pump on with. Terminals 3 and 4 will be the signaling source to turn relay on through coil side of relay, and a terminal to ground, also on the coil side of relay. If you have constant power on one terminal, check for the signaling power. When the car is cranking over, the signal terminal should be hot-the signal will be coming from engine computer. So when cranking, relay socket should have two hot terminals. If you don't have two, you're right, relay is not getting correct power to the fuse block. BTW, don't use jumper wire to check for signaling source, use a testlight. Don't want to cause spark from computer wire.
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I have a 02 grand caravan, there is fuse call asd that keeps on blowing.

Well in a short term, you have a short circuit somewhere. Here is a detailed toturial for you. Please rate this post, thank you.

Automatic Shutdown (ASD) sense - PCM Input

The ASD sense circuit informs the PCM when the ASD relay energizes. A 12 volt signal at this input indicated to the PCM that the ASD has been activated. This input is used only to sense that the ASD relay is energized.
When energized, the ASD relay supplies battery voltage to the fuel injectors, ignition coils, and the heating element in each oxygen sensor. If the PCM does not receive 12 volts from this input after grounding the ASD reley, it sets a Diagnostic Trouble Code (DTC).

Automatic Shutdown Relay - PCM Output

The PCM operates the Automatic Shutdown (ASD) relay and fuel pump relay through one ground path. The PCM operates them by switching the ground path for the solenoid side of the realys on and off. Both realys turn on and off at the same time.
The ASD relay connects battery voltage to the fuel injectors and ignition coil. The fuel pump relay connects battery voltage to the fuel pump.
A buss bar in the power distribution center (PDC) supplies voltage to the solenoid side and contact side of the relay. The ASD relay power circuit contains a 20 amp fuse between the buss bar in the PDC and teh relay. The fuse also protects the power circuit for the fuel pump relay and pump. The fuse is located in teh PDC.
The PCM controls the relay by switching the ground path for the solenoid side of the relay on and off. The PCM turns the ground path off when the ignition switch is in the Off position. When the ignition switch is in the On or Crank position, the PCM monitors the crankshaft position sensor and the camshaft position sensor signals to determine engine speed and ignition timing (coil dwell). If the PCM does not receive the crankshaft position sensor and camshaft position when the ignition switch is in teh Run position, it will de-energize teh ASD relay.
The ASD relay and fuel pump relay are located in the PDC near the battery. The inside top of the PCD cover has a label showing relay and fuse location.

ASD and Fuel Pump Relays

The following description of operation and tests apply only to the Automatic Shutdown (ASD) and fuel pump relays. The terminals on the bottom of each relay are numbered.

'------------------'
' __85 ___________'
' __87A '87 '30 ___' Sorry for the crudeness of this. This is supposed to
' __86 ___________' be the relay terminals!
'------------------'

OPERATION
- Terminal number 30 is connected to battery voltage. For both the ASD and fuel pump relays, terminal 30 is connected to battery voltage at all times.
- The PCM grounds the coil side of the relay through terminal number 85.
- Terminal number 86 supplies voltage to the coil side of the relay.
- When the PCM de-energizes the ASD and fuel pump relays, terminal number 87A connects to terminal 30. This is the Off position. In the off position, voltage is not supplied to the rest of the circuit. Terminal 87A is the center terminal on the relay.
- When the PCM energizes the ASD and fuel pump relays, terminal 87 connects to terminal 30. This is the On position. Terminal 87 supplies voltage to the rest of the curcuit.

TESTING
The following procedure applies to the ASD and fuel pump relays.
(1) Remove relay from connector before testing.
(2) With the relay removed from the vehicle, use an ohmmeter to check the resistance between terminals 85 and 86. The resistance shoud be 75±5 ohms.
(3) Connect the ohmmeter between terminals 30 and 87A. The ohmmeter should show continuity between terminals 30 and 87A.
(4) Connect the ohmmeter between between terminals 87 and 30. The ohmmeter should not show continuity at this time.
(5) Connect one end of a jumper wire (16 guage or smaller) to relay terminal 85. Connect the other end of the jumper wire to the ground side of a 12 volt power source.
(6) Connect on end of another jumper wire (16 guage or smaller) to the power side of the 12 volt power source. Do not attach the other end of the jumper wire to the relay at this time.

WARNING: DO NOT ALLOW OHMMETER TO CONTACT TERMINALS 85 OR 86 DURING THIS TEST.

(7) Attach the other end of the jumper wire to relay terminal 86. This activates the relay. The ohmmeter should now show continuity between relay terminals 87 and 30. The ohmmeter should not show continuity between relay terminals 87A and 30.
(8) Disconnect jumper wires.
(9) Replace the relay if it did not pass the continuity and resistance tests. If the relay passed the tests, is operates properly. Check the remainder of the ASD and fuel pump curcuits.

__________________________________________________ _______________

I know you said you replaced the relay, and this is a test procedure for the relay, but I have bought bad parts in the past. The description before the test procedure at least gives you an idea of what components are wired through and controlled by the relay. One of those may be faulty. Email me if you want or need wiring diagrams and I should be able to scan them and email them to you.

I hope this helps.

Please rate this post, thank you
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It has no power to coil and the voltage to the tps and iat and temp sensors is to high 5.4 volts allready replaced the pcm

Check the (automatic shutdown relay) in the power distribution center for power when the key is in the on position. It controls the power to the coil,fuel pump,injectors,oxygen sensor. To check the relay, remove it from the panel. check the location of #30 corresponding to location of pin on relay. using a test light check to see if you have power on panel. Should have voltage, then check #86 on panel with the key on. It should have power. If no power then check for a blown fuse. Connect an ohm meter to the relay on terminal 86 and 85 and check the resistance. there should be 75 ohms resistance. Then check for continuity between terminals 30 and 87. There should be no continuity. Using jumper wires connect battery voltage to terminal 86 and ground terminal 85 to verify that there is continuity between terminals 87 and 30. If there isn't, replace the relay. Hope this will help you.
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Horn is not working, not getting any voltage to the steering column.....horn itself is good, used jumper to test it

sounds like your clockspring or a fuse test for power going into the clockspring please rate -jeff
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