Question about 1994 Suzuki RF 600 R

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Fuel pump won't power up on 94 rf600r

Need wiring schematic or possible problem. am getting power on 2 of the 4 wires into fuel pump. new fuel pump installed. not the problem. starter relay clicks when key turned on. fuses ok. are there supposed to be 2, 30 amp fuses in block that both battery cables attach or is one a spare fuse. thanks.

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    i have a 06 suzuki katana and it keeps cutting off i have to keep the choke on to ride


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Hi and welcome to FixYa,

On most Suzukis with fuel pump that I have worked on, the wiring would be:

  • Yellow/Green - start interlock, connected to the clutch lever position switch and/or starter control relay;
  • Black/White - ground;
  • Orange/Yellow - ignition B+12; and
  • Black/Yellow - trigger pulse, connected to the - terminal of one of the ignition coils and/or to the CDI/igniter.
Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

Posted on Nov 28, 2008

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I have Suzuki rf600 I just put new fuel pump on it and CDI box now it wont start and is backfiring please anyone

Hi, Brett and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Discharged battery, check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
8. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
10. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2 and/or BAS).
11. Security alarm needs a reset.
For more information about your issue and valuable free downloads that you will need please visit the websites below. Good luck and have a nice day.
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I have a 94 Camaro 3.4 and I need to know what color the hot wire on the fuel pump is. I get all kinds of answers from grey, black, pink. What color is it if I hotwire the pump to check it. Also wh

I don't have the diagrams. Not buying it either. But it is either pink or grey. Anything black is ground. Since 99% of the ones I do is grey, I choose this one. A 94 has 4 wires. Two are ground. one is the fuel pump, the other is the fuel sender/gas gauge. Ground it , then add 12 volts to the others. It won't hurt it. If you won't the wiring schematics, Go to ad you can buy them, plus everything else about your car.

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Have someone stand or lie down close to the gas tank when you first turn the key on WITHOUT STARTING IT. They should hear the pump running to build up pressure. If not, check the fuse box under the hood for a blown fuse or bad pump relay.

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The oil pressure send ing unit is a back up power supply for the fuel pump moter its a safty thing. Check fuse # 9 When the fuel pump is replaced the wires need to be cut and spliced because they had a problem with the wires giing to the pump over heating so the new pump has a differant connector the old one will not fit into it check the 4 wire connection splice I dought its the relay thats in the glove box thats what the back up is all about through the oil pressure unit the vehicle would still get power to the fuel pump even if the relay was bad I have a wireing schematic of a 2000 if you want it give my an Email address and i will send it to you pier-j

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INTERNAL electronic schematic Powertrain Control Module part number 56044513AC for 1998 JEEP Grand Cherokee with a 4.0 engine.

I understand you are looking for the schematic but it's going to be hard to located.
As your are waiting for the schematic,I recommend you to start checking for damage on the electrolytic capacitors inside the Power-train Control Module.
Here are few sample pictures of what your need to look for. These are not the actual pictures of your TCM.
Look for sign of leaks on the base of these capacitors. The leak will be on the circuit board. mustgo_25.jpg

Also look for top of the capacitor. A failing and failed capacitor will be CONVEX outward. mustgo_27.jpg
Replace these caps with the same micro f rating. The voltage rating can be higher then the exiting cap.

I hope some expert can come though with the schematic but checking all capacitors for damage is a good start.
Please keep me up to date on the repair and upgrade via email.

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1 Answer

Engine turns, has spark but does not start, Possible problem with the fuel pump ?

Hello. Welcome to FixYa.
The most common cause of the issue that you speak of is corrosion at the power wire, that feeds the fuel pump, on top of the fuel tank. The corrosion results in the power wire no longer delivering power to the pump. This is a very common occurance on the 89 thru 94 trucks.
You will need to remove the fuel tank to inspect the power wires, whcih are located on a removable unit. A replacement unit is easily obtained at you Toyota dealer's parts department.
Thanks for choosing FixYa for assistance today.

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