Tks au CCQ, comme d'hab'
Pre-OBD
PG7: 86-87 Integra
PE7: 85-87 USDM CRX/Civic Si
Non-OBD (88-91)
PG7 : 88-89 Integra (D16A1)
PM5 : 88-91 Civic/CRX DX (DPFI D15b)
PM6 : 88-91 Civic/CRX SOHC Si (1.6l sohc)
PM7 : 89-91 Civic/CRX Si DOHC ZC (JDM EF3)(EDM ED9)
PM8 : 88-91 CRX HF
PM9 : 88 - 91 Honda Civic DX 1.5L (DPFI D15B1) 70HP
PK2 : 88-89 Prelude B20A JDM
PR2 : 88-91 Honda ZC (EDM)
PR3 : 89-91 JDM B16A EF8/9
PR5 : 90-91 JDM Integra ZXi (1.6 sohc)
PW0 : 89-91 JDM B16A EF8/9 - EDM B16A EE8/9 DA6-XSi (DOHC VTEC)
PR4 : 90-91 Integra LS/GS (b18a)
PS9 : 88-91 4 door civic EX Auto (sohc 1.6)
OBD1 (92-95)
P05 : 92-95 OBD-1 Civic CX (USDM)(D15B)
P06 : 92-95 OBD-1 Civic DX (D15B)
P07 : 92-95 OBD-1 Civic VX (D15Z1)
P08 : 92-95 OBD-1 Civic/CRX VTi/VXi (sohc vtec)
P0A : 94-95 OBD-1 Accord EX
PR3 : 92-93 OBD-1 JDM Integra RSi/XSi (B16A)
PR4 : 92-93 OBD-1 Integra RS/LS/GS (DOHC)
PR7 : 92-95 OBD-1 NSX
P0F : 92-95 OBD-1 UKDM Accord H22
P13 : 93-95 OBD-1 Prelude Vtec (H22A)
P14 : 93-95 OBD-1 Prelude Si (non Vtec - H23A)
P27 : 92-95 OBD-1 Euro/Asian Civic (non-vtec 1.6l)
P28 : 92-95 OBD-1 Civic Si/Ex (sohc vtec d16z6)
P29 : 92-95 OBD-1 JDM Domani (DOHC zc)
P30 : 92-95 OBD-1 DelSol DOHC Vtec Si - EG SiR/VTi
P30-N21 : 92-95 OBD1 Civic SIR JDM Sans Oil Pressure switch
P30-G01 : 92-95 OBD1 Civic SIR JDM Sans Oil Pressure switch
P37 : 92-95 OBD-1 JDM Honda Beat
P39 : 92-95 OBD-1 JDM Accord DOHC
P54 : 93.5-95 OBD-1 JDM Domani/1.8l Accord (B18B)
P61 : 92-93 OBD-1 Integra GSR
P70 : 92-95 OBD-1 Domani (sohc vtec zc - no oil pressure sensor reading)
P71 : 92-95 OBD-1 Integra (sohc vtec d16a)
P72 : 94-95 OBD-1 Integra GSR
P72-941 : 94-95 OBD-1 Integra GSR AUTOMATIC 4 connecteurs
P74, P75 : 92-95 OBD-1 Integra LS/GS
P7J : 95 OBD-1 Honda Orthia JDM Automatic
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 Coupé (sohc vtec 1.6)
PK3: 90-91 Honda Prelude SR (B21A1) -->obd-1
PR7 : Acura NSX ECU
OBD2 (96-01)
P1K : 96-00 CiviC MB1 1,6l 113hp EDM
P28-G03 : 96-2000 ODB II European del Sol (SOHC Vtec)
P30 : 96-97 OBD-2A Del Sol Vtec (USDM)
P72 : 96-00 OBD-2 Integra GSR
P73 : 96-00 OBD-2 Integra Type-R (JDM & USDM)
P75 : 96-00 OBD-2 Integra LS/GS
P2E : 96-98 OBD-2A Civic LX (Canadian) Auto
P2E : 99+ OBD-2B Civic LX (Canadian) Auto
P2J-J62 96-99 JDM Honda Civic Vi EK3 with CVT D15B SOHC Vtec engine
P2J-003 96-99 JDM Honda Civic Vi EK3 with 5 speed D15B SOHC Vtec engine
P3F 96-98 OBD-2 Honda CR-V
PHK 99-01 OBD-2 Honda CR-V
P2N : 96+ OBD-2 Civic HX Coupe
P2P : 96+ OBD-2 Civic EX Coupe
P2T : 96-97 OBD-2A Honda Del Sol Vtec
PCT : 96-2000 Civic Type R (JDM)
P2T : 99+ OBD-2B Civic Si Coupe (SIR canada)
P5P : 97-00 OBD-2 Prelude Type-S (JDM )
P5M : 97-01 OBD-2 USDM Prelude, non-SH
PBA :97-00 OBD-2 Acura 1.6 EL (Canada)
P2M :96-00 OBD-2 Civic Si (Canada)
P7H : 96-97 OBD2A JDM Orthia 1.8L manuel
PRB : 2002-04 OBD-2C RSX Type S
PRC : 2002-04 OBD-2C JDM Integra Type R (RSX)
PND : 2002-04 OBD-2C RSX
PNF : 2002-04 OBD-2C Civic SI Hatch
PRA : 2001-04 OBD-2C Civic Type R EURO
PLM : 2001+ OBD2C Civic Dx/Lx
PCX : 00-01 Honda S2000
PRB-A13 : 2005 OBD-2C RSX Type S
PRB-A14 : 2006 OBD-2C RSX Type S
PRB-A15 : 2006 OBD-2C RSX Type S
RSP-E02 : 2007+ OBD-2 Civic Type R FN2
Identifying an ECU
Article Summary:
Here you will find information detailing how to identify your ECU.
Identifying your ECU
To identify your ECU you will need to know its generation, part number and possibly its ROM number.
The ECU can be located in several places: under a metal plate in the passenger's footwell (models up to 91), in the passenger's footwell behind a plastic panel (models 92-99) or by the driver's footwell under a plastic panel (some models 2000+)
The computer is connected via three connectors that pull out when a plastic clip is pressed. Remove the computer, and with a philips screwdriver remove the metal lid from the top of the computer. There may be small daughter circuit board covering some of the main circuitry. Unscrew this and lift it out of the way.
ECU Part Numbers All Honda ECUs have a part number which is located on the side of the ECU and inside the ECU on the connector. e.g. 37820-P72-A01
The part number consists of three components:
Honda's part number for ECU, which is always 37820 Three characters (which are loosely related to the model of car/engine). e.g P72 Three characters (which are the revision of the ECU) e.g. A01
The ECU Revision Number can tell us the Transmission Type it belongs to. in 88-91 ecus (PM6, PR4, PW0, PR3, PM7):
5spd = 000, 001, 002, A00, A01, A10, J00, J001, C01, C00 Auto = J51, J50, A50, A51, 901, A60, C50, C51, X30, A80, L50, L51
92-95 ECUs (P28, P30, P61, P72, P91, P08)
5spd = 000, 001, 002, 003, 004, A00, A01, A02, C00, C01, C02, J00, J01, J02, G00, G01 Auto = J50, J51, 901, 902, C50, C51, C52, A50, A51, A52, L50, L51, G51
96-00 ECUs (P2E, P2P, P2J, P72, P73):
5spd = 000, 001, 002, 003, A00, A01, A03, C00, C01, C02, C03, J00, J01, J02, A11, C11 Auto = A70, A71, A72, A91, A92, C70, C71, C72, C91, C92
From the patterns we can learn the following:
first letter = country of orgin J = Japan C = Canada A = USA G = Europe The second digit, if 5, 7, 9 then ecu is auto usually The third digit denotes the version/variation L = California emissions or typically high altitude states as well.
The middle three characters are the most useful to identify what the ECU is. Different generation ECUs may use the same characters. e.g. a P72 OBD I ECU is different from a P72 OBD II ECU.
ECU ROM Numbers As further identification Honda ECUs have a software revision number inside the ECU. This is usually a two or three digit number stamped on the 28 pin ROM, or main processor. Accord and Prelude ECUs can use a letter and number code.
