Pm6 Ecu Error Codes
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1991 Honda Civic Ecu Codes
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Suspension Satisfaction » Engine Management ECU Tech User Name Remember Me? Password D-Series.org is the premier Honda Forum on the internet. Registered Users do not see the above ads. LinkBack Thread Tools Display Modes 01-14-2004, 04:03 PM #1 (permalink) pm5 ecu DOG All powerful D-series member iTrader: (18) Join Date: Sep 2003 Location: Orange
Honda Ecu Codes
Park, FL. Posts: 3,414 Rep Power: 16 View My Photo Gallery iTrader Score: 18 reviews OBD I ECU Anatomy Thanks to Hondata www.hondata.com
Pr4 Ecu
Introduction The Honda ECU, like your Honda engine, is a very well designed piece of equipment made to work in many cars under many varying conditions of temperature and altitude. This tech article looks at the functions of http://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/error-code-7-pm6-ecu-302818/ the ECU and how it differs from some of the piggyback and standalone systems available. Backup Microprocessor The backup microprocessor monitors the function of the main microprocessor, ROM and sensors. In the event of a serious failure it takes over the running of the computer in what is called limp home mode. In this mode the ECU needs only two sensors to run. TDC (top dead center from the distributor) and TPS (throttle position). In fact http://www.d-series.org/forums/engine-management/3063-ecu-tech.html you can remove entirely the ROM and primary microprocessor and your Honda will still run. Limp home mode is rev limited to 3500 RPM with a fixed ignition and rather rich fuel setting with the engine check light permanently on. This is military specification redundancy designed to keep you going even in the event of multiple sensor failures. No other vehicle maker we are aware of uses a backup processor and this level of redundancy. Analog Input This is where the 12V signals are conditioned and converted into 5V for processing - such as the distributor signals TPS and MAP. Analog Output: Injector driver transistors These are excellent quality transistors, which make a substantial contribution to how the well the Honda ECU drives injectors. These transistors do not even get warm (except when low impedance resistors are incorrectly wired in without the Honda resistor box!). All Honda ECUs drive high impedance injectors or low impedance injectors with an external resistor box. Hondas switch the injectors on and off rapidly (red line). With poorer quality transistors the injectors do not open or close as quickly, resulting in less fuel delivered in the same amount of time. The difference is most noticeable at small injector durations - part throttle. Increase your fuel pressure and the extra fuel line pressure can slow the injector opening. Another reason to keep
ad Forum Jump THIS BOARD IS CLOSED GOTO WWW.HONDACIVICWAGON.COM THIS BOARD IS CLOSED GOTO WWW.HONDACIVICWAGON.COM THIS BOARD IS CLOSED GOTO WWW.HONDACIVICWAGON.COM Civic Wagon FAQ & http://hondacivicwagon.yuku.com/topic/479 Links Powertrain: Engine, Tranny, Exhaust! Footwork! Suspension, Brakes, Wheels... Appearance, Exterior, Interior, Aero Autocross, Drag & Street ECU, Electrical, Ignition, Fuel & Car Audio Exclusive: Our Members Wagons Wagon Pics & http://hondaswap.com/threads/ecu-code-doesnt-exist.233858/ Members Rides << Previous Topic Next Topic >> PM6 ECU Error 6 - Coolant Author Comment Unregistered(d) PM6 ECU Error 6 - Coolant Lead [-] Posts: 0 Sep 1 05 6:31 check engine PM More My Recent Posts Tags : None My ECU has started throwing the error code six... coolant. Anyone know what could be going on here?The car is running at normal temperature and there is a proper mixture of anti-freeze etc, could this be a dud code or should i be worried? Advertisement Remove this ad Remove this ad SiWagon Dude? pm6 ecu error Let's hope. #1 [-] Posts: 292 Sep 2 05 10:24 AM Beagle Driver More My Recent Posts Temp . sensor maybe bad.1) Ignition OFF2)Remove Hazard fuse for 10 sec. 2 reset ECU3)Ign. ONIf Check Eng. lite is OFF.Intermittent prob.System OK. Check for poor or loose connectors @ sensor .Is wagn 2 or4WD?If "CHeck Eng." lite is still ON:1)Eng. ON till fan turns ON2)Ign. OFF3)Remove connector to TW sensor (under distributer)4)Ohm test the sensor.5) should be between 200-400 OhmIf not replace TW sensor.There's one more test if your still having the prob. Unregistered(d) thanks! #2 [-] Posts: 0 Sep 2 05 11:51 PM More My Recent Posts thanks heaps... hehe but i didn't realise that there were more errors after 6..691017I know what each of them are so i will look into replacing those sensors (preventitive maintenance). akiraboy989 Re: thanks! #3 [-] Posts: 2750 Sep 3 05 6:02 AM AdministratorWagon Crackhead More My Recent Posts is there a specific incident that caused all these cel'sthats strange that you have 4 like thatFounder of www.hondacivicwagon.comLead by example SiWagon Re: thanks! #4 [-] Posts
Discussion in 'ECU's, Electronics, and Tuning' started by neo25ny, Jan 13, 2009. neo25ny New Member Messages: 4 Likes Received: 0 Joined: Jan 13, 2009 Location: Hermon, NY Hopefully i posted in the correct section....I have a '91 crx si with a dual cam zc swap. I am using the PM7 ecu. It is throwing code 11 and i can't find a code 11 anywhere. The only mention i've seen is that it is a nonexistent code. It is not a faulty ecu either i have tried a few different ecu's and i get the same 11 error code. I have only found two somewhat related cases....one being someone having a rev limit issue at 3,000 rpm and another case i seen is someone said they shift into reverse and the engine light comes on and runs like crap. I am wondering if it is something to do with the transmission or wiring with the drivetrain.....i was thinking and i have trouble with mine sometimes my car will "chug" or "buck" at exactly 3,000 rpm's and i never could figure it out, i've replaced so many parts and checked and re-checked everything i can think of, and now that i see two other cases of drivetrain related issues i am thinking it may be a wiring issue or something? Anyone have any ideas what the code 11 is or how to fix the "chug" at 3,000 rpms?? Thanks in advance. neo25ny, Jan 13, 2009 neo25ny, Jan 13, 2009 #1 AHHVTEC Well-Known Member VIP Messages: 13,122 Likes Received: 245 Joined: Oct 13, 2006 Location: Alabama how are you counting the light. how many times does it blink AHHVTEC, Jan 13, 2009 AHHVTEC, Jan 13, 2009 #2 neo25ny New Member Messages: 4 Likes Received: 0 Joined: Jan 13, 2009 Location: Hermon, NY code 11 There is one long and one short flash, it is the only code thrown and it keeps repeating i have checked and rechecked many times to be sure i wasn't misreading it or something. I got so fru