%HTTP_EQUIV_ON_VIEW%
PGMFI Logo
Library> WebHome (search result) Destinations: Home | Library | Change Log | Index
Search | Go

Search: OBD1[^A-Za-z]

Topics in Library web: Changed: now 16:29 GMT Changed by:
02D01720-1500 14 Mar 2007 - 05:11 - r1.5 Home.defensio
To convert a "1720" board from non-vtec to vtec add the following parts: Required: Q26: C2785 ( note: I used a C144 and it worked fine NPN switching transistor) C60 ...  
515XHighSideSwitch 28 Dec 2005 - 06:52 - r1.7 Home.4g vtec
Honda uses a 5 pin high side switch in a lot of their OBD1 and OBD2 ECUs to control solenoids like auto trans and vtec solenoids. Allegro / Sanken is the OEM for ...  
66kResources 23 Sep 2005 - 19:23 - r1.2 Home.blundar
Documentation 66kAssemblerDocs factory documentation on the Oki 66xxx processors used in most OBD1 and OBD2 implemenations 66kOperations a list of the common 66xxx ...  
82C55 01 Aug 2005 - 14:37 - r1.3 Home.blundar
The 82C55 is an IO controller chip used in many OBD1 ECUs. Fortunately, almost all OBD1CivicIntegraECUs share a common pattern for what is controlled by the 82C55 ...  
AccordAutoOBD2-OBD1 13 Oct 2005 - 22:25 - r1.4 Home.drdisco69
Information provided by Bird333 First off my disclaimer (gotta have one right ). I, nor anyone else is responsible (except you) if you screw up your car, house, life ...  
AddIABToP28 29 Jul 2006 - 05:20 - r1.9 Home.M2Prelude
Author: Deluded Date: 07-24-03 23:44 READ CAREFULLY: The procedure to add IABs is different depending on how they are wired. One IAB wire will always run to the ECU ...  
BasicConcepts 19 Jan 2006 - 07:34 - r1.3 Home.markolson
Vocab: ECU Engine Control Unit OBD0 the first unofficial generation of honda engine electronics OBD1 the second unofficial generation of honda engine electronics ...  
BegginersFAQ 27 Feb 2007 - 18:13 - r1.2 Home.sanimalp
(blundar sez: most of these were moved over from the old FAQ) If you are a beginner, and you have a question that you think other people will have too, please add ...  
CEL 22 Dec 2005 - 08:58 - r1.3 Home.qwertyville
Check Engine Light This indicator (usually on the dash) comes on to indicate that the ECU thinks something is wrong. The ECU will usually indicate an error code by ...  
CheckSum 12 Jul 2004 - 14:08 - r1.3 Home.synoptic
A Checksum is a very basic form of error checking. A checksum is calculated by adding the values of a ROM together, without any form of carry or overflow checking ...  
ChippingOBD2 31 Mar 2004 - 19:00 - NEW Home.blundar
How to chip a ODB2 ECU by Doc (edited by Dave) Table of Contents: TOC Introduction Contrary to popular belief, it is possible to chip a ODB2 ECU. It's not cheap like ...  
ChippingWithPictures 19 Jul 2006 - 23:16 - r1.3 Home.4g vtec
Chipping OBD0 PM6 Pictures of what needs to be done to chip a 90-91 PM6/PM7/PR5/PR4/PP5/etc. ChippingOBD1BigCase Pictures of what needs to be done to chip an OBD1 ...  
ChipsForECUs 29 Mar 2004 - 21:20 - r1.2 Home.blundar
all 90-95 (most OBD0 and all OBD1 ) honda ECUs require a 32k byte (256kbit) ROM . Some common chips used by the DIY-chipping scene are the 27C256 , AT 29C256 and 27SF256 ...  
Conversion 19 Feb 2004 - 22:01 - NEW TWiki Guest
Describe Conversion here. Conversion is the act of modifying the WireHarness at the ECU so you can fit ohter Generation (OBD) ECU. For example, you might want to run ...  
CromeScript 31 Mar 2007 - 03:08 - r1.3 Home.racingsky
Crome has a powerful scripting language. There are many functions you can call to do things. It would be good to document them here. 3/5/04 see below for additional ...  
D16Z6-4G-swapnotes 19 Feb 2004 - 23:25 - NEW Home.blundar
Brief remarks on installing the D16Z6 itself Installing a Z6 is pretty close to dropping a D16A6 (a.k.a. A6) engine in. Alterations that need to be made include: ...  
DataLogging 24 Oct 2005 - 06:02 - r1.14 Home.markolson
Data logging refers to recording the conditions of a running engine. It normally happens using serial communication with the ECU There are two way for Data Logging ...  
DebuggingDataLogging 03 Jan 2005 - 05:58 - r1.4 Home.markolson
Thanks to ltdannear for lots of help in getting this to work. The following is a guideline for how to debug the datalogging circuit you have added to your ECU. This ...  
DocECUSchool 05 Mar 2004 - 17:40 - NEW Home.blundar
From post: Doc Teaches ECU School A while ago, Doc and I had a conversation on IM that turned into a very informative post. It is now archived here for your reading ...  
ECUHardware 06 Feb 2007 - 01:40 - r1.4 Jared Karagen?
This page describes how the hardware in an ECU works, and fun things you can do with it. If you are just wanting to learn how to chip your ECU , you should look at ...  
ECUHardwareMods 23 Feb 2006 - 07:38 - r1.12 Home.sonictronic
It is possible to do may modifications to the hardware of a Stock ECU. You can convert AutoToManual . You can convert OneWireTo4WireO2Sensor if starting with a P08 ...  
EPROM 19 Feb 2004 - 22:01 - NEW TWiki Guest
Electrically Programmable ROM ROM that can be programmed using a RomBurner The most common types pin-compatible with most OBD0 and OBD1 Honda ECU s are the 27C256 ...  
EasyRtpInstall 30 Jul 2004 - 16:01 - r1.4 Lego Z81
Please Note: These installation instructions are preliminary. Please double check the instructions and report any errors. Once you've completed the construction of ...  
EasyRtpV10 22 Dec 2004 - 20:36 - r1.10 Home.synoptic
This page is a construction design for the Easy-RTP V1.0 board. This is the single sided design for a DS1230 style 28 pin DIP NVSRAM. You can find the eagle design ...  
EcuBackupProcessor 18 Nov 2004 - 17:30 - NEW Home.blundar
Honda ECUs are engineered with many levels of redundancy. There is a Backup processor (labeled NEC BACK0004 in most OBD0 and Oki 6534 in most OBD1 (??)). The backup ...  
EcuConnections 01 Nov 2006 - 18:43 - r1.4 Home.almskidd
You can donate any ECU WireHarness setup here. Write the ECU type, engine, cam, XDM and carmodel and make a link to a thread at Harnesses and Conversions in the Approaces ...  
EcuDefinitionCodes 02 Apr 2007 - 17:06 - r1.84 Home.hackish
Honda ECU definition codes These id codes are the last 3 digits printed directly on the MCU after the model number (e.g. M66207-251 the "251" portion will be a much ...  
EcuFamilies 29 Jan 2007 - 15:49 - r1.23 Home.1net
ECU Families: TOC "Pre-OBD" Early fuel injection designs PG7 : 86-87 USDM / JDM Integra (D16A1 VacuumAdvance) PE7 : 85-87 EDM / USDM Civic/CRX Si (EW3/EW4 VacuumAdvance ...  
EngineCoolantTemperature 05 Mar 2004 - 19:46 - NEW Home.blundar
The EngineCoolantTemperature (ECT) sensor measures how warm (or cool) coolant passing through the motor is. Ed Gibson had this to say about it: 'Temperature lookup ...  
FullThrottleShift 19 Feb 2004 - 22:01 - NEW TWiki Guest
Full Throttle Shift This is simply an extension of the concept behind Full-Throttle Launch (aslo called LaunchControl) that allows for a different rev limit while ...  
HowDoesDataLoggingWork 24 Oct 2005 - 06:50 - NEW Home.markolson
There are a number of programs that enable you to log data about how your engine is working by reading information out of the ECU. For my OBD1 ECUs, I use CROME Pro ...  
HowToLogExternalDataSuchAsAnEgtSensor 07 Mar 2006 - 04:51 - r1.5 Home.markolson
Wouldn't it be nice to use your ECU to log data from and aftermarket sensor such as data from an EGT sensor? If you could, it would be relatively easy to use the O2 ...  
IntroductionToECUChipping 12 May 2006 - 09:00 - r1.10 Home.hondainfo
Introduction to ECU Chipping by David Blundell Please feel free to link to this article, but "mirroring" is highly discouraged, as you will not automatically receive ...  
JapaneseDomesticMarketP30D12Modification 31 Mar 2007 - 03:41 - r1.3 Home.racingsky
Using the Unused Analog Input D12 on OBD1 ECUs to Log Analog Input Such as Exhaust Gas Temperature. All of the testing was done on a USDM P30 OBD1 ECU and all of ...  
KurtsOBD0-OBD1 19 Feb 2004 - 22:01 - NEW TWiki Guest
First attempt to post this OBD1 conversion write-up on wiki.pgmfi.org. Some sections need revision still and they are in italics/bold print. Please send any suggestions ...  
LabelDecode 19 Sep 2004 - 19:21 - r1.3 Home.blundar
You can find out a lot from reading the label on a OBD1 ECU. This applies mainly to the Civic ECUs... dunno bount the integra ones. 37820-ABC-XYZ Digits Meaning ABC ...  
ManualChecksum 19 Feb 2004 - 23:25 - NEW Home.blundar
There are two ways to fix a checksum error. The first is to change the program of the ROM in such a way that the checksum routine is disabled / removed. Learn to code ...  
MapSensor 13 Sep 2006 - 16:33 - r1.4 Turbo EF9?
The Manifold Absolute Pressure Sensor (MapSensor) tells the ECU what the absolute pressure in the intake manifold is (relative to AbsoluteVacuum). This allows the ...  
NicoAnalyze 18 Jul 2005 - 02:10 - r1.2 Home.roy
Author: XDEep first thanks to nico for a great tool. the mishap im talking about is when you drag the scrollbar up and down, the cells get pushed around. so even though ...  
OBD0VTEC 19 Feb 2004 - 22:01 - NEW TWiki Guest
OBD0 and OBD1 VTEC formula: RPM (DecAtAddy 128) x 62.52  
OBD1 13 Dec 2006 - 15:40 - r1.5 Home.lithiumus
" OBD 1" is generally used to refer to honda engine electronics from 92-95. Accords/Preludes used OBD1 connectors as early as 1990. This is not an official standard ...  
OBD1CN2 31 Oct 2005 - 01:53 - r1.7 Home.fred
CN2 is the connector to the serial port on an OBD1 ECU. Here's the pinout of the Dataconnector IN a Honda ECU: 1: GND 2: RX (send Data from the PC to the ECU) 3: 5 ...  
OBD1CivicIntegraAutoManual 10 Feb 2006 - 20:34 - r1.3 Home.drdisco69
USDM RP17 and RP18 values: J Automatic Manual RP17 4.7k Ohm Open RP18 2.7k Ohm Jumpered JDM RP18 values: J Automatic Manual RP18 2.4k Ohm 1.4k Ohm JDM Auto to Manual ...  
OBD1CivicIntegraECUs 21 Feb 2006 - 08:00 - NEW Home.dj_spark
Almost all OBD1 ECU s used in 92-95 Civics and integras (but NOT preludes, accords, legends, etc.) are more or less electrically compatible. With minor tweaks, all ...  
OBD1ConversionFormulae 19 Feb 2004 - 22:01 - NEW TWiki Guest
OBD1 8bitLowCamRPM eight bit values used for low-cam tables and VTEC crossover points OBD1 8bitHighCamRPM eight bit values used for high-cam tables OBD1 16bitRPM ...  
OBD1J1 19 Feb 2004 - 22:01 - NEW TWiki Guest
J1 on OBD1 ECU s controls the state of EA . It is used to change whether the MCU uses an external ROM or internal program.  
OBD1J12 05 Mar 2004 - 19:26 - NEW Home.blundar
In its stock configuration, an OBD1 car has a diagnostic connector under the dash which is wired to the ECU's serial port. The ECU's serial port is also wired to OBD1CN2 ...  
OBD1PR4 26 Dec 2005 - 03:53 - r1.3 Home.Swap_File
PR4 92-93 Integra RS/LS/GS (B18A) The PR4 also came in an OBD0 variety see OBD0PR4 for the 90-91 ECUs.  
OBD1_16bitRPM 19 Feb 2004 - 22:01 - NEW TWiki Guest
If ''x'' is a 16-bit RPM value, then: RPM(''x'') 1875000/''x'' 16-bit values are invariably stored in LittleEndian format on all OBD1 ECUs.  
OBD1_8bitLowCamRPM 19 Feb 2004 - 22:01 - NEW TWiki Guest
This is the conversion from the "low cam" 8-bit RPM values used for VTEC crossover points and in the low-cam tables. It involves some modular arithmetic, so it's easier ...  
OBD1_8bitMBar 21 May 2005 - 03:50 - NEW Home.bigwig
Assuming that the stock map sensor's maximum reading is 1764 Mbar, the formula to convert MAP byte value is ((1764 / 255) OBD1 8bitMBar / 2). When the rom's map value ...  
P05 28 Dec 2005 - 06:36 - r1.2 Home.4g vtec
P05 92-95 OBD1 Civic CX (D15B8) The P05 ECU came with the D15 SOHC non-vtec motor with close-coupled cat and a 1-wire O2 sensor in the 92-95 Civic CX. Basically an ...  
P06 25 Feb 2004 - 20:30 - NEW Home.blundar
P06 92-95 OBD1 Civic DX (D15B SOHC non-vtec) (Thanks Katman!) Thanks Katman:  
P07 26 Jun 2005 - 05:29 - r1.3 Home.markese
P07 92-95 OBD1 Civic VX (D15Z1) Unique in that it has two 66207 processors (one presumably for the wideband O2) Note: 303 P07 Code is very similar to 304 P28-A01 Code ...  
P08 30 Mar 2004 - 02:18 - r1.2 Home.eg6ajk
P08 92-95 OBD1 Civic/CRX VTi/VXi (D15B sohc vtec) 1 Wire O2, otherwise pretty similar to P28 .  
P0A 18 May 2006 - 18:59 - r1.3 Home.kabuki
P0A 94-95 OBD1 Accord EX attached pic is a 94 P0A-A51 PCB is IPT 02D010B0-1502 The data below has been copied over from the P13 page as a place holder. Only a few ...  
P0C 19 Feb 2004 - 22:01 - NEW TWiki Guest
P0C 92-95 OBD1 Accord 2.2L (??? F22B DOHC non-vtec)  
P11 19 Feb 2004 - 22:01 - NEW TWiki Guest
P11 92-95 OBD1 Prelude 2.0i BB3 with F20A4 non-vtec  
P13 19 Sep 2006 - 17:13 - r1.15 Home.carotman
P13 93-95 OBD1 Prelude Vtec (H22A DOHC Vtec) RAM Location Bytes Description Notes 00A4 1 MAP sensor 00AB 1 Tps Sensor OBD1 8bitTPS 00AE 2 RPM in 16bit form 00D9 1 ...  
P14 26 Jan 2007 - 23:58 - r1.3 Jared Karagen?
P14 93-95 OBD1 Prelude Si (non Vtec H23A) There are at least 2 versions of this ECU: One with and one without knock sensor. The ECUs with a knock board have R118 ...  
P14ToP13 28 Apr 2005 - 05:11 - r1.2 Home.speed_of_bokchoy
How to convert an OBD1 P14 into a OBD1 P13 by Andrew Congdon I've now suceeded in converting a P14 to P13. Here's what I added to a P14-Q00 to make it electrically ...  
P27 19 Feb 2004 - 22:01 - NEW TWiki Guest
P27 92-95 OBD1 Euro/Asian Civic (non-vtec 1.6l)  
P28 26 Jul 2005 - 21:54 - r1.8 Home.-anton-
P28 92-95 OBD1 Civic Si/Ex and Del Sol(SOHC VTEC D16Z6) scan of auto: http://pgmfi.org/resources/FAQ/scans/P28autoback.jpg scan of auto (thanks turboef9): http:/ ...  
P29 30 Mar 2004 - 02:27 - NEW Home.eg6ajk
P29 92-95 OBD1 JDM Domani/Civic 25th Anniversary (Dohc zc)  
P30 23 Mar 2007 - 11:36 - r1.27 Home.johncui
P30 (Rom #203) P30-G01 95 Uk Civic Vti Hatch, Big case one. Uses CPU's internal rom, but has space for external rom. Ran code from rom above OK but needed knock sensor ...  
P39 15 Mar 2006 - 14:33 - r1.3 Home.carotman
P39 92-95 OBD1 JDM PRELUDE BB4 DOHC Non-VTEC(F22B)  
P51 26 Jun 2004 - 09:35 - NEW Home.sens
92-93 OBD-1 JDM Ascot Innova 2.3l Si-Z H23A CC-4 DOHC non-vtec  
P54 19 Feb 2004 - 22:01 - NEW TWiki Guest
P54 92-95 OBD1 JDM Domani/1.8l Accord (1.8L B18B DOHC) Scan: http://pgmfi.org/resources/FAQ/scans/P54-92-900ajk.jpg Scan (Thanks eg6ajk): http://pgmfi.org/resources ...  
P61 19 Sep 2006 - 18:12 - NEW Home.carotman
P61 92-93 OBD1 USDM GSR B17A DOHC vtec m66207-215  
P70 19 Feb 2004 - 22:01 - NEW TWiki Guest
P70 92-95 OBD1 Domani (sohc vtec zc no oil pressure sensor reading)  
P71 30 Mar 2004 - 02:26 - NEW Home.eg6ajk
P71 92-95 OBD1 Integra (d16a nonvtec)  
P72 02 Apr 2006 - 02:18 - r1.18 Home.91crxsi
ROM addresses and their functions specific to the stock Honda P72 used in: 94-95 OBD1 Integra GSR (1.8L B18C? DOHC Vtec) 96-00 OBD2 Integra GSR Picture of OBD1 P72 ...  
P74 19 Feb 2004 - 22:01 - NEW TWiki Guest
P74/75 94-95 OBD1 Integra RS/LS/GS (1.8L B18B) Scan (Thanks Katman!): http://pgmfi.org/resources/FAQ/scans/P75OBD1top.jpg scan  
P75 19 Feb 2004 - 22:01 - NEW TWiki Guest
P75 96-00 OBD2 Integra LS/GS For OBD1 see P74 P74 .  
P76 19 Feb 2004 - 22:01 - NEW TWiki Guest
P76 94-95 OBD1 JDM Integra (sohc zc)  
P84 19 Feb 2004 - 22:01 - NEW TWiki Guest
P84 92-95 OBD1 JDM Civic ETi (VTEC-E auto)  
P91 16 Mar 2004 - 19:18 - NEW Home.blundar
P91 92-95 OBD1 JDM Civic Coupe (sohc vtec 1.6) How to identify: http://pgmfi.org/resources/FAQ/scans/P91identify.jpg Scan (Thanks Katman): http://pgmfi.org/resources ...  
PM9 17 Jun 2004 - 04:28 - r1.4 Home.warrick
Essentially a PM5 The PM5 PM9 are essentially the same ECU. I think one may have been for the 4 speed and one the 5 speed, but I'm not sure. (blundar) The PM9 that ...  
PR3 29 Jan 2005 - 07:10 - r1.4 Home.noriega
PR3 89-93 JDM B16A EF8/9 MCU M66x301 58 and 93 Note: There are both OBD0 and OBD1 ECUs designated "PR3" and they are not in any shape or form compatible with each ...  
PR7 13 Dec 2006 - 15:46 - NEW Home.lithiumus
PR7 91-94 OBD1 NSX  
PT3 25 Mar 2006 - 19:57 - r1.3 Home.acclude
PT3 90-93 OBD1 USDM Accord SOHC non-vtec F22A1 This ECU shares the shares the same PC board with the EDM PT5 Accord ECU (02D01190-1504) Scan: http://pgmfi.org/resources ...  
PT5 08 Feb 2006 - 06:23 - NEW Home.carotman
PT5 90-93 OBD1 EDM Accord SOHC non-vtec F20A7 This ECU shares the shares the same PC board with the PT3 Accord ECU (02D01190-1504)  
PeakAndHoldInjectors 19 Feb 2004 - 22:01 - NEW TWiki Guest
Peak And Hold Injectors aka LowImpedanceInjectors. Impedance typically ~2-5ohms. At 12volts, this is a draw of ~6-2.4 amps The high current will cause the injectors to ...  
ProposedDataloggingProtocol 20 Feb 2004 - 00:37 - NEW Home.blundar
This is a working draft of a proposed protocol to replace the stock serial interrupt handler. It is intended to be cross platform (i.e. both OBD0MPFI ECUs and OBD1CivicIntegraECUs ...  
RealTimeProgramming 26 May 2004 - 18:52 - r1.6 Home.hackish
Used for tuning your ecu and making changes to it on the fly. Hardware EasyRtpV1.0 Easy-RTP v1.0 Dave's single sided adaptation of Doc's original DS1230Y based design ...  
RomMaps 12 Apr 2004 - 02:07 - r1.6 Home.SYnoptic
Rom Maps An area to collaborate on all the memory addresses found in ROMs TOC OBD1 Civic and Integra ECUs OBD1CivicIntegraECUs share a lot of features Memory Locations ...  
RtpTruthTable 19 Feb 2004 - 22:01 - NEW TWiki Guest
Peusdotruth table for RTP logic compatible with both OBD0 and OBD1 hardware: (/PSEN) (OBD1) (DS1230AB) A15 /WR /OE /CS /IOWE /WE /OE /CE 0 a b c a 1 b c 1 a X X 1 ...  
SaturatedInjectors 19 Feb 2004 - 22:01 - NEW TWiki Guest
Saturated Injectors aka HighImpedanceInjectors Impedance typically 12-16ohms. At 12volts, this is a draw of ~1-.75 amps. The low current helps keep the injectors cool ...  
TroubleshootingSolidCEL 27 Dec 2004 - 18:16 - r1.2 Home.markolson
Solid CELs are arguably one of the easier problems to troubleshoot because there are relatively few things that cause them to happen. A "solid" CEL occurs when there ...  
UberDataFAQ 19 Feb 2004 - 22:01 - NEW TWiki Guest
Uberdata FAQ Stupid newbie tard Uberdata FAQ Author: Blake Warner Email: uberteg@cox.net, vertigo118@cox.net Notes: Remember to donate if you use and enjoy this software ...  
UnderstandingMaps 21 Nov 2005 - 19:26 - r1.2 Home.ben ogle
Understanding Fuel and Ignition Maps. Fuel Maps Below around 80 throttle, the ECU uses the oxygen sensor in conjunction with the fuel tables to calculate how much ...  
VehicleSpeedSensor 27 Sep 2005 - 10:22 - r1.2 Fast Hatch?
The Vehicle Speed Sensor ( VSS ) tells the ECU how fast the car is moving. In most hondas, it pulses to ground 4 times per revolution of the axles. Most OBD0 cars ...  
WebHome 30 Mar 2007 - 22:03 - r1.26 Home.racingsky
Welcome to the PGMFI Library! If at any time you wish to return to this main wiki page, click the Project PGMFI logo. THIS IS A NEW WIKI ENGINE. PLEASE SEND EMAILS ...  
WebStatistics 07 Nov 2007 - 15:33 - r1.261 TWiki Guest
Statistics for Library Web Month: Topic views: Topic saves: File uploads: Most popular topic views: Top contributors for topic save and uploads: Nov 2007 19044 0 ...  
WideBandO2 17 Feb 2006 - 19:56 - r1.6 Home.kabuki
What is a Wideband O2 sensor It is an OxygenSensor that gives stable output over a much larger range than standard 1-wire or 4-wire oxygen sensors. It is helpful ...  
WireHarness 12 Apr 2006 - 06:13 - r1.3 Home.Ace0246
A WireHarness is a term for the connetors and wires that are connected to the ECU. OBD0 , OBD1 and OBD2 all have different connectors and there are different wire ...  
_EA 19 Feb 2004 - 22:01 - NEW TWiki Guest
EA (EA Prime) is a pin on the MCU that controls whether the MCU runs off Internal ROM or an external ROM chip. EA is pin 31 on 40-pin Intel8051 MCU s OBD1J1 J1 on ...  

Number of topics: 97

{ }
Copyright © 2002-present by the contributing authors. All material on this collaboration platform is the property of the
contributing authors, and is covered by the Non-Commercial Share-Alike License unless explicitly stated otherwise.
Ideas, requests, problems regarding the PGMFI TWiki?? E-Mail the WikiAdmin
Site Designed By: Digital Fusion   Need a website?

  %WEBCOPYRIGHT%