Technical Information ECU Identification Identifying your ECU To identify your ECU you will need to know its generation, part number and possibl y its ROM number The ECU can be located in se!eral places" under a metal plate in the passenger#s footwell $models up to %&', in the passenger#s footwell behind a plastic panel $models %()%%' or by the dri!er#s footwell under a plastic panel $some models (***+' The computer is connected !ia three connectors that pull out when a plastic clip is pressed Remo!e the computer, and with a philips screwdri!er remo!e the metal lid from the top of the computer There may be small daughter circuit board co!ering some of the main circuitry Unscrew this and lift it out of the way
ECU enerations -onda ECUs run in generations, which use different different connectors .elow is a stack of ECUs running from the newest generation at the top to the oldest generation at the bottom
OBD2B (left 3 plugs used)
OBD2A ECU
OBD1 ECU
OBD0 (JDM PR3 and PWO)
ECU Part u!"ers All #$nda ECUs ECUs %a&e a part nu!"er nu!"er '%% s l$ated l$ated $n t%e sde $f t%e ECU and nsde nsde t%e ECU $n t%e $nnet$r* e*g* 3+,20-P+2-A01 .%e part nu!"er $nssts $f t%ree $!p$nents/ •
#$ndas part nu!"er f$r ECU '%% s al'as 3+,20
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.%ree %araters ('%% are l$$sel related t$ t%e !$del $f arengne)* e*g P+2
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.%ree %araters ('%% are t%e re&s$n $f t%e ECU) e*g* A01 $r 452
.%e !ddle t%ree %araters are t%e !$st useful t$ dentf '%at t%e ECU s* Dfferent generat$n ECUs !a use t%e sa!e %araters* e*g* a P+2 OBD 6 ECU s dfferent fr$! a P+2 OBD 66 ECU* #ere s a lst $f $!!$n ECUs/ .%e last 3 %araters are "r$7en d$'n nt$ 3 parts* 8A8 generall s used f$r U9 ECUs* 848 s Eur$pean and 8J8 s Japanese* .%ere are $t%er &ers$ns $f t%s "ut $u get t%e dea* .%e se$nd dgt 808 tpall !eans !anual trans!ss$n '%ere a 858 !eans aut$!at trans!ss$n and t%e last dgt 818 s t%e &ers$n nu!"er* •
P4+ / ,:-,; 6ntegra (,:-,+ &a ad&ane ,,-,; eletr$n ad&ane)
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PM5 / ,,-;1 C&CR< D<
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PM: / ,,-;1 C&CR< 9O#C 9
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PM+ / ,;-;1 DO#C =C (JDM E> ECU)
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PM, / ,,-;1 CR< #>
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PR2 / ,;-;1 =C (Eur$)
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PR3 / ,;-;1 JDM B1:A E>,;
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PR3 -J00 $r J51 / ;2 JDM 6ntegra B1:A E>,;
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PW0 / ,;-;1 JDM B1:A E>,; DA:-<9
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PR? / ;0-;1 6ntegra @949
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P9; / ,,-;1 ? d$$r C& E< Aut$
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P05 / ;2-;5 OBD-1 C& C<
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P0: / ;2-;5 OBD-1 C& D<
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P0+ / ;2-;5 OBD-1 C& <
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P0, / ;2-;5 OBD-1 C& D15 JDM
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P0A / ;?-;5 OBD-1 A$rd E<
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P13 / ;3-;5 OBD-1 Prelude te
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P1? / ;3-;5 OBD-1 Prelude 9 (n$n te)
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P2+ / ;2-;5 OBD-1 E4 JDM C& 1:00 s$%
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P2, / ;2-;5 OBD-1 C& 9E
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P30 / ;2-;5 OBD-1 Del9$l DO#C te 9E4 9R
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P5?-431 / 1;;+ #$nda A$rd 1*, @9
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P:1 / ;2-;3 OBD-1 6ntegra 49R
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P+2 / ;?-;5 OBD-1 6ntegra 49R
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P+2 / ;:-00 OBD-2 6ntegra 49R
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P+3 / ;:-00 OBD-2 6ntegra .pe-R (JDM U9DM)
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P+?+5/ ;2-;5 OBD-1 6ntegra @949
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P+5 / ;:-00 OBD-2 6ntegra @949
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P2 / ;: OBD-2 C& #< C$upe
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P2P / ;: OBD-2 C& E< C$upe
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P2E / ;: OBD-2 C& D< C$upe
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P2M / ;: OBD-2 = C& 9O#C .EC
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P2. / ;; OBD- C& 9 C$upe
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P5P / ;+-00 OBD-2 Prelude .pe-9 (JDM ECU)
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PBA / ;+ U9 Aura 1*:E@
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PC. / ;, JDM 6.R C.R
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PC< / ;; OBD- 92000
ECU ROM u!"ers As furt%er dentfat$n #$nda ECUs %a&e a s$ft'are re&s$n nu!"er nsde t%e ECU* .%s s usuall a t'$ $r t%ree dgt nu!"er sta!ped $n t%e 2, pn ROM $r !an pr$ess$r* A$rd and Prelude ECUs an use a letter and nu!"er $de*
