Delphi ECU Part Number Guide: 28xxxxxx, PSA 96/98xxxxxx80 Pairs, Renault 8200 and DCM Labels

Ssangyong Actyon, cranking, no start, and the label says A6645406432 above 28040923. The customer has already bought a ‘Delphi ECU’ from a breaker on the strength of the A664 number, and it doesn’t start either. Delphi labels carry two or three numbering systems on one sticker, and the one the breaker matched wasn’t the one that mattered.

The Delphi hardware number: 28xxxxxx

Delphi’s own reference is an eight-digit number starting 28. It identifies the board, not the calibration. The Ssangyong above is 28040923; an Isuzu D-Max lists 28084147980 next to Isuzu number 8980173438, and a later D-Max lists 28129180980 with 8980795280 and the BAAM marking. On the Isuzu labels the 28 number carries an extra 980 suffix, so quote it exactly as printed rather than trimming it to eight digits.

The R04xxxxx number, when present, is a Delphi software or release reference. It’s more specific than the 28 number and less specific than the car maker’s calibration number. If the label shows an R04 number, include it in your request.

The family name on the case: DDCR, DCM3.x, DCM6, DCM7

Delphi diesel ECUs are branded by generation. DDCR is the early Renault 1.5 dCi unit; DCM1.2 and DCM3.x cover Renault, Dacia, Kia and Hyundai 1.5 dCi and PSA 1.4/1.6 HDi; DCM3.5 and DCM3.7 turn up on Mercedes, Ford and Ssangyong; DCM6.2 and DCM7.1 are the PSA and Fiat 2.0/2.2 HDi vans. The family name plus the car maker’s number is nearly always enough to find the right file.

PSA pairs: 96xxxxxx80 and 98xxxxxx80

PSA prints two of its own numbers on a Delphi box: a hardware number and a software number, both ending in 80. Look at the Peugeot Boxer DCM7.1B entries in the catalogue: the hardware 9824601180 appears with software 9696660880, 9699190580, 9696838480, 9698280080 and 9698769880. Five different files, one hardware number. A Citroen Jumper with the same 9824601180 lists 9698280380. On the older DCM6.2C the pattern is the same: 9809447780 hardware with 9693294280, 9692365980, 9692895380 or 9694269680 software.

The 98xxxxxx80 range is the newer allocation on most labels, started when 96xxxxxx80 ran short, so a hardware 98 with software 96 or the reverse is normal. Match the software number. If only the hardware number is legible, read the ECU ident with Diagbox or a flashing tool and it will report the software number.

Renault pairs: 8200xxxxxx and 237xxxxxxR

Renault does the same with its 8200 series on older cars and 237 series on newer ones. DDCR examples: 8200417401 with 8200421177 (Kangoo), 8200389672 with 8200429121 (Megane), 8200129109 with 8200355859 (Kangoo, immo off). The first is normally the hardware, the second the software, though Renault doesn’t always print them in that order; a third 8200 number on some labels (8200334419 8200469340 8200469752 on a Megane) is the data set. Newer DCM3.4 on a Fluence shows 237100914R with 237104316R, and 237100120R with 237100943R.

On Renault the Delphi ECU is paired to the UCH. A stock file for a different software number will run the engine but won’t fix a pairing problem; that needs CLIP, or a virgin file plus key programming.

Ford and Delphi

Ford Transit and Connect Delphi boxes carry the Ford 12A650 system: 4T11-12A650-CE with VF17PEA (Connect), 4C11-12A650-BF (Transit). The VF17PEA style is the strategy code, the same idea as the 14C204 number on later Fords. Our Ford part number post covers that family in detail.

What went wrong on the bench

Back to the Actyon. A664 is Ssangyong’s Mercedes-derived numbering and it identifies the engine variant, but the Kyron in the catalogue reads A6645408032 and the Actyon A6645406432. Close, not the same, and the used one from the breaker was the Kyron version. The file inside carried the Kyron immo data anyway, so even the right hardware would have needed an immo off file or key programming. The fix was writing the Actyon IMMO OFF DUMP for A6645406432 28040923 into the customer’s own ECU, which had never been faulty; the original fault was a corroded plug.

Delphi files are listed under Delphi, DDCR and DCM7.1B; PSA ones by brand under Peugeot. Photograph the whole label and put every number in the request if the search comes back empty.