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 <<O>>  Difference Topic EcuFamilies (r1.23 - 29 Jan 2007 - Home.1net)
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  • P1 J : 96-00 OBD-1 UK manufactured Civic with D14 engines - 75hp or 90hp
  • P1 K : 96-00 OBD-1 UK manufactured Civic with D14 engines - 75hp or 90hp
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  • P13 : 93-95 OBD-1 Prelude Vtec (H22A DOHC Vtec) eprom check (Thanks Katman!)
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 <<O>>  Difference Topic EcuFamilies (r1.22 - 14 Apr 2006 - Home.gotz2b16)
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  • P0 B? : 92-95 OBD-1 Accord 2.2L (??? F22B SOHC non-vtec)

 <<O>>  Difference Topic EcuFamilies (r1.21 - 07 Apr 2006 - Home.carotman)
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"OBD0 MPFI" (88-91 MPFI *Non*-Vtec Prelude/Accord B20A)

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 <<O>>  Difference Topic EcuFamilies (r1.20 - 27 Mar 2006 - Home.acclude)
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  • PT6? : some sort of non-VTEC OBDI Accord or Prelude, F22 I am guessing
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  • PT6? : 91-93 Accord, non-VTEC OBDI Accord with F22A6 motor (IAB intake manifld)

 <<O>>  Difference Topic EcuFamilies (r1.19 - 25 Mar 2006 - Home.Orion)
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Dual Point - 88-91 (later in Europe?) OBD0-ish DPFI Civics

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Dual Point - 88-91 (88-95 in Europe) OBD0-ish DPFI Civics

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  • P04 : ??-?? Euro ???
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  • P04 : 92-95 Euro EG DXi
  • PW1 : ??-95 Euro Concerto 1.5i

 <<O>>  Difference Topic EcuFamilies (r1.18 - 14 Mar 2006 - Home.carotman)
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  • P12 : 92-95 OBD-1 Prelude S F22Aa non-vtec
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 <<O>>  Difference Topic EcuFamilies (r1.17 - 08 Feb 2006 - Home.carotman)
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 <<O>>  Difference Topic EcuFamilies (r1.16 - 31 Jan 2006 - Home.carotman)
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  • PT3 : 90-93 OBD-1 Accord F22A1
  • PT6? : some sort of non-VTEC OBDI Accord or Prelude, F22 I am guessing
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  • PT6? : some sort of non-VTEC OBDI Accord or Prelude, F22 I am guessing
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 <<O>>  Difference Topic EcuFamilies (r1.15 - 30 Jan 2006 - Home.carotman)
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  • PH3 : 86-89 Accord Generation 3 B20A Engine
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  • PH3 : 86-89 Accord JDM B20A Engine

 <<O>>  Difference Topic EcuFamilies (r1.14 - 30 Jan 2006 - Home.carotman)
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  • PK2 : 88-91 Prelude (Accord?) Generation 3 B20A Engine
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  • PK2 : 88-91 Prelude Generation 3 B20A Engine
  • PH3 : 86-89 Accord Generation 3 B20A Engine

 <<O>>  Difference Topic EcuFamilies (r1.13 - 04 Jul 2005 - Home.chen)
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  • PK2 : 88-91 Prelude (Accord?) Generation 3 B20A Engine

 <<O>>  Difference Topic EcuFamilies (r1.12 - 25 Mar 2005 - Home.blundar)
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%META:FILEATTACHMENT{name="PT6.bin" attr="" comment="Sorry, I screwed this up, someone help me delete" date="1102139543" path="PT6.bin" size="32768" user="nfn15037" version="1.1"}%


 <<O>>  Difference Topic EcuFamilies (r1.11 - 04 Dec 2004 - Home.nfn15037)
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  • PT6? : some sort of non-VTEC OBDI Accord or Prelude, F22 I am guessing
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%META:FILEATTACHMENT{name="PT6.bin" attr="" comment="Sorry, I screwed this up, someone help me delete" date="1102139543" path="PT6.bin" size="32768" user="nfn15037" version="1.1"}%


 <<O>>  Difference Topic EcuFamilies (r1.10 - 21 Oct 2004 - CREX)
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  • PP5 : 90-93 (dates questionable?) UK Rover 216 Cabrio (ZC Powered)
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  • PP5 : 88-94 inc PP4. Honda Concerto, UK Rover 216, 220, 416, 420, GSi, Gti, ???

 <<O>>  Difference Topic EcuFamilies (r1.9 - 10 Mar 2004 - Home.blundar)
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OBD1 92-95 (ish) Prelude/Accord

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OBD1 92-95 (ish) Prelude/Accord


 <<O>>  Difference Topic EcuFamilies (r1.8 - 06 Mar 2004 - Home.blundar)
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92-95 "OBD1" Civics and Integras

All 92-95 Civic and Integra ECUs use one of three board designs. Differences in ECUs are often as simple as a different program. Different portions of each "motherboard" can be populated to enable controlling vtec, automatic transmissions or purge solenoids.

  • P07 : 92-95 OBD1 Civic VX (D15Z1) scan (Thanks Katman!) 6 Wire O2 P07 6 Wire O2 P07 6 Wire O2 P07(thanks Deluded / Raver Motorsports)

  • P05 : 92-95 OBD1 Civic CX (D15B)
  • P06 : 92-95 OBD1 Civic DX (D15B) scan (Thanks Katman!)
  • P28 : 92-95 OBD1 Civic Si/Ex (sohc vtec d16z6) scan of auto scan of auto (thanks turboef9) scan of ECU modded by Erick's racing scan of manual ECU USDM/JDM (Thanks Katman)
  • P30 : 92-95 OBD-1 Del Sol? DOHC Vtec Si/EG Si R? ECU (Thanks Katman!)
  • P61 : 92-93 OBD-1 USDM GSR B17A DOHC vtec
  • PR3 : 92-93 OBD-1 JDM Integra RSi/XSi (B16A) ECU
  • PR4 : 92-93 OBD1 Integra RS/LS/GS (DOHC) scan (Thanks Katman!)

  • P72 : 94-95 OBD-1 Integra GSR (1.8L B18C? DOHC Vtec) identify scan funky AT ECU (Thanks Katman)
  • P74 : 92-95 OBD-1 Integra LS/GS (1.8L B18B) scan (Thanks Katman!)
  • P75 : 92-95 OBD-1 Integra LS/GS (1.8L B18B) scan (Thanks Katman!)

  • P08 : 92-95 OBD1 Civic/CRX VTi/VXi (sohc vtec) scan (Thanks Katman!) manual scan manual scan auto scan auto scan (Thanks eg6ajk)
  • P27 : 92-95 OBD1 Euro/Asian Civic (non-vtec 1.6l)
  • P29 : 92-95 OBD-1 JDM Domani (sohc zc)
  • P54 : 92-95 OBD-1 JDM Domani/1.8l Accord (1.8L B18B DOHC) scan scan (Thanks eg6ajk)
  • P70 : 92-95 OBD-1 Domani (sohc vtec zc - no oil pressure sensor reading)
  • P71 : 92-95 OBD-1 Integra (sohc vtec d16a)
  • P76: 94-95 OBD-1 JDM Integra (sohc zc)
  • P84 : 92-95 OBD-1 JDM Civic ETi (VTEC-E auto)
  • P91 : 92-95 OBD-1 JDM Civic Coupe (sohc vtec 1.6) identify scan (Thanks Katman)

OBD1 92-95 (ish) Prelude/Accord

Although not quite as similar as the Civic/Integra ECUs of this era, the Prelude + Accord ECUs are clearly from the same design group.

  • P11 : 92-95 OBD-1 Prelude 2.0i BB3 with F20A4 non-vtec
  • P13 : 93-95 OBD-1 Prelude Vtec (H22A DOHC Vtec) eprom check (Thanks Katman!)
  • P14 : 93-95 OBD-1 Prelude Si (non Vtec - H23A)

 <<O>>  Difference Topic EcuFamilies (r1.7 - 05 Mar 2004 - Home.blundar)
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Dual Point - 88-91 (later in Europe?) OBD0-ish DPFI Civics

  • PM5 : 88-91 Civic Std / CRX DX (??)
  • PM9 : 88-91 Civic Std / CRX DX (??)
  • P04 : ??-?? Euro ???

 <<O>>  Difference Topic EcuFamilies (r1.6 - 19 Feb 2004 - Home.blundar)
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ECU Families:

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ECU Families:

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 <<O>>  Difference Topic EcuFamilies (r1.5 - 03 Jan 2004 - The Admin)
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Early "Pre-OBD"

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ECU Families:

"Pre-OBD" - Early fuel injection designs

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"OBD0 MPFI" (88-91 MPFI *Non*-Vtec Civics, Integras)

The following ECUs all share a common circuit board design(with some minor differences):

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"OBD0 MPFI" (88-91 MPFI *Non*-Vtec Civics, Integras)

The following ECUs all share a common circuit board design(with some minor differences):
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The PM8 and PR4 each have unique circuit boards, although their code is mostly compatible with the other ECUs in this family.

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The PM8 and PR4 each have unique circuit boards, although their code is mostly compatible with the other ECUs in this family.

 <<O>>  Difference Topic EcuFamilies (r1.4 - 20 Dec 2003 - The Admin)
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 <<O>>  Difference Topic EcuFamilies (r1.3 - 18 Dec 2003 - The Admin)
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Early "Pre-OBD"

  • PG7 : 86-87 USDM/JDM Integra (D16A1 Vacuum advance)
  • PE7 : 85-87 EDM/USDM Civic/CRX Si (EW3/EW4 Vacuum advance)
  • PJ1 : 85-87 EDM Integra 1.6i-16, CRX MK1 1.6i-16
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Early "Pre-OBD"

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  • PJ7 : 86-87 Prelude 2.0 Si (B20A3) (Vac advance?)
  • PJ0 : 86-87 Accord A20 (vac advance)
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  • PL2 : 8?-88+ Acura/Rover V6 (C25/C27)
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"OBD0" (88-91)

  • PG7 : 88-89 Integra (D16A1 - electronic advance)
  • PM6 : 88-91 Civic/CRX SOHC Si (1.6l sohc)
  • PM7 : 89-91 Civic Si DOHC ZC (JDM EF3) (Euro A20A Also reported by Mark Lamond)
  • PM8 : 88-91 CRX HF (Euro ZC also reported)
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"OBD0 MPFI" (88-91 MPFI *Non*-Vtec Civics, Integras)

The following ECUs all share a common circuit board design(with some minor differences):

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  • PR5 : 90-91 JDM Integra ZXi (1.6 sohc)
  • PS9 : 90-91 USDM Civic EX (1.6L SOHC - usually auto)
  • XE5 : 88-91 (dates questionable?) Mugen Race platform (ZC)

The PM8 and PR4 each have unique circuit boards, although their code is mostly compatible with the other ECUs in this family.

  • PM8 : 88-91 CRX HF (Euro ZC also reported)
  • PR4 : 90-91 USDM Integra LS/GS B18A1 (note: OBD1 PR4 exists too)

 <<O>>  Difference Topic EcuFamilies (r1.2 - 18 Dec 2003 - The Admin)
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  • PM6 : 88-91 Civic/CRX SOHC Si (1.6l sohc)
  • PM7 : 89-91 Civic Si DOHC ZC (JDM EF3) (Euro A20A Also reported by Mark Lamond)
  • PM8 : 88-91 CRX HF (Euro ZC also reported)
  • PP5 : 90-93 (dates questionable?) UK Rover 216 Cabrio (ZC Powered)

 <<O>>  Difference Topic EcuFamilies (r1.1 - 17 Dec 2003 - The Admin)
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%META:TOPICINFO{author="TheAdmin" date="1071700560" format="1.0" version="1.1"}% %META:TOPICPARENT{name="WebHome"}%

Early "Pre-OBD"

  • PG7 : 86-87 USDM/JDM Integra (D16A1 Vacuum advance)
  • PE7 : 85-87 EDM/USDM Civic/CRX Si (EW3/EW4 Vacuum advance)
  • PJ1 : 85-87 EDM Integra 1.6i-16, CRX MK1 1.6i-16

  • PJ7 : 86-87 Prelude 2.0 Si (B20A3) (Vac advance?)
  • PJ0 : 86-87 Accord A20 (vac advance)

  • PL2 : 8?-88+ Acura/Rover V6 (C25/C27)

"OBD0" (88-91)

  • PG7 : 88-89 Integra (D16A1 - electronic advance)

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Revision r1.23 - 29 Jan 2007 - 15:49 GMT - Home.1net 		%WEBCOPYRIGHT%