T87 8L90/10L80 diagnostic clutch control commands

Disassembly, Reassembly, Tools and devleopment. Going deep with Hardware and Software.
Post Reply
fl0wl0w
Posts: 2
Joined: Fri Jun 22, 2018 2:44 am
cars: L83/8L90 swapped 2013 W204 Mercedes, 1986 LS3 Swapped BMW E30, 1995 LS swapped GMC Truck, Custom Vehicle

T87 8L90/10L80 diagnostic clutch control commands

Post by fl0wl0w »

Hi All,

Long time lurker, first time poster.

I need the diagnostic commands for actuating the transmission solenoids on a T87

So far i've already figured this out from sniffing another scanner, but it only goes up to 4 clutches as i think it was only made for the 6 speeds

CAN identifier : 7E2
07 AE 34 XX 00 00 00 00
Clutch 1 Control Enable Byte 3 Bit 7
Clutch 1 Control Value Byte 3 Bit 6
Clutch 2 Control Enable Byte 3 Bit 5
Clutch 2 Control Value Byte 3 Bit 4
Clutch 3 Control Enable Byte 3 Bit 3
Clutch 3 Control Value Byte 3 Bit 2
Clutch 4 Control Enable Byte 3 Bit 1
Clutch 4 Control Value Byte 3 Bit 0

It's probably just the next byte for the next clutch controls, I can try sending them and checking with a multimeter, but am currently away from the vehicle at the moment. Am interested to see if anyone else has already figured this out.
mytunes
Posts: 10
Joined: Fri Aug 26, 2022 10:44 am

Re: T87 8L90/10L80 diagnostic clutch control commands

Post by mytunes »

Would be cool to figure it out
Post Reply