5WY ECM Identification

Siemens 5WY ECMs were used on both Delta and Beta motors on a range of vehicles from the mid 1990s to early 2010s. The main difference is the number of harness/socket and pin counts.

Siemens 5WY 5 Connector (2.7L V6)

2003 2.7L V6 Delta 2MBit

2004 2.7L V6 Delta 4MBit

The Siemens 5WY 5 connector ECM is found on an array of vehicles ranging between 1999 and 2012 equipped on the 2.5L and 2.7L Delta motors including the Sonata, Santa Fe, Tucson, Tiburon and Sportage. There are two types of EEPROMs used across this range known as 2MBit and 4MBit (or 256Kbytes and 512Kbytes). There are 7 major variants of this ECM. These variants can be identified by the 5WY designation under the SIEMENS logo here:

5WY 5 Connector Identification Matrix

EEPROM	Family	Variants	Years	Calibration Version Cross Compatibility	Engine Type	O2 Sensor
2MBit AM29F200BB M29F200BB	5WY12	5WY1215	1999-2001	ca650055	Delta G6BV/G6BW 2.5L	5volt NB
	5WY15	5WY1502 5WY1503 5WY1515 5WY1541	2002-2003	ca652040 ca652048 ca652051	Delta G6BA 2.7L
4MBit AM29F400BB M29F400BB	5WY17	5WY1706 5WY1708 5WY1710 5WY1711 5WY1745 5WY1753	2003-2004	ca654011 ca654012 ca654014 ca654015 ca654016 ca654019		1volt NB
	5WY18v1	5WY1805 5WY1842	2005	ca654020 ca654021
	5WY18v2	5WY1857	2006	ca654024 ca654025
	5WY1Fv1	5WY1F02 5WY1F03	2007	ca655022
	5WY1Fv2	5WY1F28 5WY1F29 5WY1F65 5WY1F66	2008-2009	ca655027 ca655029

The vehicle chassis code, year, region and engine type can be found on the right of the label:

• N - North American (E = European)
• 7 - Delta 2.7L (5 = Delta 2.5L)
• 2 - 2002 year (3 = 2003, 4 = 2004, 5 = 2005, etc. etc.)
• G - GK model

There is a date code just above the barcode which identifies the date which it was flashed. The dates are written as "DAY.MONTH.YEAR" with the following examples:

• 30.10.02 - October 30th 2002
• 18.12.03 - December 18th 2003

A pinout can be found here: Siemens 5WY 5 Connector Pinout

Siemens 5WY 2 Connector (2.0L L4)

2003 2.0L L4 Beta 2MBit Non-CVVT

2004 2.0L L4 Beta 4MBit CVVT

2008 2.0L L4 Beta 4MBit CVVT

The Siemens 5WY 2 connector ECM is found on an array of vehicles up to approximately 2012 equipped with the 2.0L Beta motors. There are two types of EEPROMs used across this range known as 2MBit and 4MBit (or 256Kbytes and 512Kbytes). There are 5 major variants of this ECM. These variants can be identified by the 5WY designation under the SIEMENS logo here:

• 5WY14 - 2MBit family w/o CVVT 2002-2003
• 5WY16 - 4MBit family w/ CVVT 2004-2006 MT
• 5WY41 - 4MBit family w/ CVVT 2004-2006 AT
• 5WY19 - 4MBit family w/ CVVT 2007-2009 MT
• 5WY1A - 4MBit family w/ CVVT 2007-2009 MT
• 5WY44 - 4MBit family w/ CVVT 2007-2009 AT

The vehicle chassis code, year, region and engine type can be found on the right of the label:

• N - Region. N is North American
• C - BETA 2.0 CVVT (0 is BETA 2.0 non-CVVT)
• 4 - 2004 year (3 = 2003, 4 = 2004, 5 = 2005, etc. etc.)
• G - GK model

There is a date code just above the barcode which identifies the date which it was flashed. The dates are written as "DAY.MONTH.YEAR" with the following examples:

• 07.05.03 - May 7th 2003
• 21.08.03 - August 21st 2003
• 29.08.07 - August 29th 2007

A pinout can be found here: Siemens 5WY 2 Connector Pinout