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The A20A 86-89 Accord/Prelude PJ0 ECU had many revisions in different countries. Some of them will lack an O2 sensor or EGR control. However, they all use a vacuum advance distributor.

Most those ECUs were made by Matsushita. Some of them (86-87?)use an external 128k ROM.

The California Emissions PJ0 is OKI 80C154 based and use a 256k External ROM

Attachment?: Modify: Size: Date: Who: Comment:
PJ0-A03.jpg mod 282684 30 Jan 2006 - 06:54 carotman Canadian 89 Accord ECU. Made by Matsushita
PJ0-604-2.JPG mod 588048 30 Jan 2006 - 07:13 carotman EDM A20A4 no EGR and no O2 sensor from an 89 EX-i
PJ0_L022.JPG mod 212536 08 Feb 2006 - 22:55 carotman California Emissions PJ0 ECU. OKI based
PJ0-666-front.jpg mod 797657 29 Dec 2006 - 20:22 carotman USDM 86-87 Prelude SI PJ0 ECU
PJO_L022.jpg mod 281583 30 Mar 2010 - 00:20 carotman California Emissions PJ0 ECU. OKI based

Revision: r1.3 - 29 Dec 2006 - 20:27 GMT - carotman { Edit | Attach | History | More }
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