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Anonymous Posted on Feb 27, 2013

92 Audi 80 2.3, I have no pulse to the injectors and iv traced my fault back to the ecu. There is no power to the ecu, its a 35 pin plug, does anyone know which pin is power and which is earth? iv printed off wiring diagrams online but they are too blurry to make out

1 Answer

Reynaldo Andico

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  • Cars & Trucks Master 2,431 Answers
  • Posted on Feb 27, 2013
Reynaldo Andico
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Joined: Apr 21, 2011
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Online at engine codes they have it

4 Related Answers

alicantecoli

Colin Stickland

  • 22516 Answers
  • Posted on Nov 11, 2008

SOURCE: 1998/9 ford escort LHD factory immobiliser

changed to firefox lost that dammed 2009 antivirus stuff now.kept cutting me out on every stroke of keyboard.now where was i ??yes this fault was caused by car being left with battery connected.get it a lot here as its a holiday area and cars get left whilst owners in uk.battery slowly died and alarm cut in ,,now as we all know and that is the dealers like the golden egg and these people get taken big time.this escort is no exemption the dealer wants about 200€ to restart vehicle plus breakdown truck and their are a lot of these cars about now diesel is no problem but a petrol one i dont know about i have earthed the starter solonoid and fuel pump solenoid but what do i have to earth for the spark.also if anyone reads this what about the latest renaults with that stupid card thing,is it possible to by-pass the alarm system on these?? local renault garage loves the english with these pieces of junk .just look at the dammed things and immobiliser cuts in.lowest bill here was 220€ but more often than not its on average of 500+ € by the time the computer will not start the car because of fault number ???? ,and new plastic air connector fitted 220€ + labour + + + +this that and another.keep away from renaults dammed froggy rubbish give these cars the agincourt sign

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J F

  • 155 Answers
  • Posted on Jan 03, 2009

SOURCE: ECU pinout?

www.suzukiinfo.com has heaps of diagrams. Should be one there to help.

Anonymous

  • 17 Answers
  • Posted on Mar 19, 2010

SOURCE: 87 toyota pickup 4x4 22ret i have no injector

OK, the computer grounds one of the curciuts on each injector to pulse it.
Interesting information from alldata, the autodata and mitchell and Bosch AFC all show a code 11 as being ECM (B+) that I have, which could be the EFI main relay, fuse, fuse link or wiring (usually one of the wires on the battery terminal have broken off or corroded and lost connection)
Here is the diagram I have for Bosch AFC on Toyota PU, I'm not sue it will be readable compressed for upload but here you are


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Anonymous

  • 1 Answer
  • Posted on Feb 21, 2011

SOURCE: mercedesw202 c200 pms ecu system . car wont start

Hi I have a 1995 C200 Auto Sedan chs WDB 2020202F241703, I think I have a problem in the ECU. Only runs on two cylinders, I have changed the core pack on the 1 & 4 cylinders but the problem persists. The other problem is I don't know where the ECU (engine computer ?) is can anyone help ?

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My fuel pump iz working bt my injectors are not firing

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How do i fix no pulse to injectors but got good spark all 6 cylinders?

Yup. Fuel supply problem. Could be a number of things. Check if the injectors are clicking when you crank. no click, no power to the injectors, problem with sensors data to the Ecu. If click, that part is not the problem. More likely Fuel pressure regulator is bad, not enough pressure, or fuel pump relay which controls the fuel pump. So either may be bad or connections are bad or wires cut. Fuel filter may be clogged. To test th fuel pump, you can jump from the battery positive to pump terminal for a short time to verify the pump is good. so then connections at pump, or from the fuel pump relay or it's connections to the ECU. Most disastrous may be the Ecu itself. Other sensors to the Ecu could contribute, but usually with code problems including sensors it goes into a "limp home" mode. overriding bad sensor inputs. If somehow you can get the error codes read at auto parts store, that may give you more clues than I can guess at. Good luck, hope this helps you out.
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I have a 1988 300zx non turbo 3.0 just replaced the ecu thinking it was the problem but its not. My car will turn over and it sparks, tested the fuel pressure and it makes 42lbs so thats not the problem...

The pulse to switch the coils comes from the crankshaft sensor via the ecu. Pulse to switch injectors comes from the CAMshaft sensor via the ecu. Check injector wiring plugs and confirm there is an ignition live of 12v at one side. Other side should have an earth pulse when cranking.Once you know which is missing you can trace the fault backwards. ( if no ignition live then check wiring, relay, fuse etc) if no earth switching check camshaft sensor and wiring.
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Mercedesw202 c200 pms ecu system . car wont start

Hi I have a 1995 C200 Auto Sedan chs WDB 2020202F241703, I think I have a problem in the ECU. Only runs on two cylinders, I have changed the core pack on the 1 & 4 cylinders but the problem persists. The other problem is I don't know where the ECU (engine computer ?) is can anyone help ?
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lack of injector pulse? perhaps there is a controller problem..like a pcm or something....without anymore information, i can't tell you anything else.
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