1990-2000 ECU list for North America (Yamae)
10-24-14, 06:25 PM
#1
1990-2000 ECU list for North America (Yamae)
This list of ECU part numbers was complied by Yamae. 
This will help to define which ECU's are in the North American spec LS400's. We've seen some different ECU's part #'s among the LS400's so not all are generically one part# for all models.
If your ECU has a different part# please post it in this thread.
This is not for capacitor fixes/requests. Any posts that follow the ECU capacitor fixes are to be posted in this thread:
https://www.clublexus.com/forums/ls4...capacitor.html
This will help to define which ECU's are in the North American spec LS400's. We've seen some different ECU's part #'s among the LS400's so not all are generically one part# for all models.
If your ECU has a different part# please post it in this thread.
This is not for capacitor fixes/requests. Any posts that follow the ECU capacitor fixes are to be posted in this thread:
https://www.clublexus.com/forums/ls4...capacitor.html
As far as I investigate the variation of the ECU for the North American market, there are ECUs as follow.
ECU Part Number USA/CND Some for Taiwan
-----------------------------------------------
90-93 model
Part Number, Production Date, Model(Description)
89661-50010, 05/1989-08/1990
89661-50020, 05/1989-08/1990 W(TRACTION CONTROL)
89661-50030, 05/1989-08/1990 CALIFORNIA SPEC
89661-50031, 08/1990-09/1990
89661-50032, 09/1990-08/1992
89661-50040, 05/1989-08/1990 CALIFORNIA SPEC & W(TRACTION CONTROL)
89661-50041, 08/1990-09/1990 W(TRACTION CONTROL)
89661-50042, 09/1990-08/1992 W(TRACTION CONTROL)
89661-50140, 08/1992-01/1993
89661-50141, 01/1993-08/1993
89661-50142, 08/1993-10/1994
89661-50150, 08/1992-01/1993 CALIFORNIA SPEC
89661-50151, 01/1993-01/1994 CALIFORNIA SPEC
------------------------------------------------
94-97 Model
89661-50220, 10/1994-02/1995
89661-50221, 02/1995-08/1995
89661-50230, 10/1994-02/1995 CALIFORNIA SPEC
89661-50231, 02/1995-08/1995 CALIFORNIA SPEC
89661-50290, 10/1994-02/1995 USA TAIWAN SPEC
89661-50291, 02/1995-08/1995 USA TAIWAN SPEC
89661-50302, 08/1995-09/1995
89661-50303, 09/1995-08/1996
89661-50330, 08/1995-08/1996 USA TAIWAN SPEC
89661-50340, 08/1996-09/1996
89661-50341, 09/1996-07/1997
89661-50370, 08/1996-11/1996 USA TAIWAN SPEC
89661-50371, 11/1996-07/1997 USA TAIWAN SPEC
------------------------------------------------
Model after 98
89661-50430, 07/1997-10/1997
89661-50431, 10/1997-11/1997
89661-50433, 11/1997-02/1998
89661-50434, 02/1998-08/1998
89661-50480, 07/1997-10/1997 USA TAIWAN SPEC
89661-50481, 10/1997-11/1997 USA TAIWAN SPEC
89661-50483, 11/1997-02/1998 USA TAIWAN SPEC
89661-50484, 02/1998-08/1998 USA TAIWAN SPEC
89661-50501, 08/1998-05/1999
89661-50502, 05/1999-08/1999
89661-50511, 08/1998-05/1999 USA TAIWAN SPEC
89661-50512, 05/1999-08/1999 USA TAIWAN SPEC
89661-50530, 08/1999-11/1999
89661-50531, 11/1999-08/2000
89661-50540, 08/1999-08/2000 USA TAIWAN SPEC
-----------------------------------------------
ECU Part Number USA/CND Some for Taiwan
-----------------------------------------------
90-93 model
Part Number, Production Date, Model(Description)
89661-50010, 05/1989-08/1990
89661-50020, 05/1989-08/1990 W(TRACTION CONTROL)
89661-50030, 05/1989-08/1990 CALIFORNIA SPEC
89661-50031, 08/1990-09/1990
89661-50032, 09/1990-08/1992
89661-50040, 05/1989-08/1990 CALIFORNIA SPEC & W(TRACTION CONTROL)
89661-50041, 08/1990-09/1990 W(TRACTION CONTROL)
89661-50042, 09/1990-08/1992 W(TRACTION CONTROL)
89661-50140, 08/1992-01/1993
89661-50141, 01/1993-08/1993
89661-50142, 08/1993-10/1994
89661-50150, 08/1992-01/1993 CALIFORNIA SPEC
89661-50151, 01/1993-01/1994 CALIFORNIA SPEC
------------------------------------------------
94-97 Model
89661-50220, 10/1994-02/1995
89661-50221, 02/1995-08/1995
89661-50230, 10/1994-02/1995 CALIFORNIA SPEC
89661-50231, 02/1995-08/1995 CALIFORNIA SPEC
89661-50290, 10/1994-02/1995 USA TAIWAN SPEC
89661-50291, 02/1995-08/1995 USA TAIWAN SPEC
89661-50302, 08/1995-09/1995
89661-50303, 09/1995-08/1996
89661-50330, 08/1995-08/1996 USA TAIWAN SPEC
89661-50340, 08/1996-09/1996
89661-50341, 09/1996-07/1997
89661-50370, 08/1996-11/1996 USA TAIWAN SPEC
89661-50371, 11/1996-07/1997 USA TAIWAN SPEC
------------------------------------------------
Model after 98
89661-50430, 07/1997-10/1997
89661-50431, 10/1997-11/1997
89661-50433, 11/1997-02/1998
89661-50434, 02/1998-08/1998
89661-50480, 07/1997-10/1997 USA TAIWAN SPEC
89661-50481, 10/1997-11/1997 USA TAIWAN SPEC
89661-50483, 11/1997-02/1998 USA TAIWAN SPEC
89661-50484, 02/1998-08/1998 USA TAIWAN SPEC
89661-50501, 08/1998-05/1999
89661-50502, 05/1999-08/1999
89661-50511, 08/1998-05/1999 USA TAIWAN SPEC
89661-50512, 05/1999-08/1999 USA TAIWAN SPEC
89661-50530, 08/1999-11/1999
89661-50531, 11/1999-08/2000
89661-50540, 08/1999-08/2000 USA TAIWAN SPEC
-----------------------------------------------
The following users liked this post:
USDM (04-10-17)
10-24-14, 08:46 PM
#2
Lead Lap
can someone please tell me what the difference between 89662-50010 and 89661-50502-84 is? i thought the latter was the ECU for my 1999 LS
10-25-14, 04:07 PM
#5
Moderator
10-26-14, 12:02 PM
#6
Lead Lap
so if 89662-50010 is the engine computer, which by the way has a list price of $7,635.71, is 89661-50502-84 just the same part but remanufactured? and that one has a list price of $1,301.67
Trending Topics
10-27-14, 07:17 PM
#8
Moderator
Thank for the information and the detailed photos, sha4000. As Stroock639 and you just posted, there are some more ECUs other than the list at the post #1. The list is only the collection of data obtained from the manufacturing and the parts suppling information. Other than those, there are ECs (Engineering Changes) and TSBs. These are not yet covered.
For examples, according to one of the TSBs, 89661-50224 is used replacing 89661-50220 (factory installation 10/1994-02/1995) / 89661-50221 (factory installation 02/1995-08/1995) as a countermeasure for the engine halt problem at certain conditions. For California, 89661-50234 is used replacing 89661-50230 / 89661-50231.
As sha4000 kindly informed us, it would be nice to update the list by members here. I'm away from North America and I only can do a little. When you guys remove the ECU box and open to replace capacitors, I expect you to see the ID number and post it here.
For examples, according to one of the TSBs, 89661-50224 is used replacing 89661-50220 (factory installation 10/1994-02/1995) / 89661-50221 (factory installation 02/1995-08/1995) as a countermeasure for the engine halt problem at certain conditions. For California, 89661-50234 is used replacing 89661-50230 / 89661-50231.
As sha4000 kindly informed us, it would be nice to update the list by members here. I'm away from North America and I only can do a little. When you guys remove the ECU box and open to replace capacitors, I expect you to see the ID number and post it here.
12-12-14, 02:19 PM
#13
You list:
"89661-50032, 09/1990-08/1992"
That is the part number for my 1991 California car with no TRAC. Photos of the circuit boards are posted on the ECU cap repair thread.
In that thread, it is discussed that the TRAC version has one more capacitor than mine does. I don't know if the ECU part number is different too.
"89661-50032, 09/1990-08/1992"
That is the part number for my 1991 California car with no TRAC. Photos of the circuit boards are posted on the ECU cap repair thread.
In that thread, it is discussed that the TRAC version has one more capacitor than mine does. I don't know if the ECU part number is different too.
12-13-14, 12:44 AM
#14
Thank for the information and the detailed photos, sha4000. As Stroock639 and you just posted, there are some more ECUs other than the list at the post #1. The list is only the collection of data obtained from the manufacturing and the parts suppling information. Other than those, there are ECs (Engineering Changes) and TSBs. These are not yet covered.
For examples, according to one of the TSBs, 89661-50224 is used replacing 89661-50220 (factory installation 10/1994-02/1995) / 89661-50221 (factory installation 02/1995-08/1995) as a countermeasure for the engine halt problem at certain conditions. For California, 89661-50234 is used replacing 89661-50230 / 89661-50231.
As sha4000 kindly informed us, it would be nice to update the list by members here. I'm away from North America and I only can do a little. When you guys remove the ECU box and open to replace capacitors, I expect you to see the ID number and post it here.
For examples, according to one of the TSBs, 89661-50224 is used replacing 89661-50220 (factory installation 10/1994-02/1995) / 89661-50221 (factory installation 02/1995-08/1995) as a countermeasure for the engine halt problem at certain conditions. For California, 89661-50234 is used replacing 89661-50230 / 89661-50231.
As sha4000 kindly informed us, it would be nice to update the list by members here. I'm away from North America and I only can do a little. When you guys remove the ECU box and open to replace capacitors, I expect you to see the ID number and post it here.
12-13-14, 03:21 AM
#15
Moderator
https://www.clublexus.com/forums/ls4...ml#post7649127
https://www.clublexus.com/forums/ls4...ml#post8118881
https://www.clublexus.com/forums/ls4...ml#post8119447
I think your idea would be OK.