Help with Passat APU swap into Rx8

this might help, also look in my signature g4___ecu.pdf
https://clubgti.com/forums/index.php?threads/267196/

 

ive a couple passat diagrams as well, 3b2/3b3___ecu.pdf. rx8 loom info might be better looking in mazda forums.

or at least make a new thread

 

copied into a new thread, hopefully this will get more views

 

Passat APU, 99-on

T10b - 10 pin, black
1 - blu - alternator pin D+
2 - grn/blu - ecu pin 37 (rev counter signal)
3 - wht/gry - oil pressure switch
4 - red - permanent live for ecu & ecu + coilpack power relay
5 - brn/yel - earth for coolant temperature and level sensors for clocks
7 - blu/yel - coolant level sensor for clocks
8 - red/blu - fuel pump relay earth trigger
9 - blu/brn - coolant temp sensor for clocks
10 - brn/red - speedometer sender for clocks

T10d - 10 pin, brown
1 - grn/blk - diagnostics K-line
2 - yel/brn - ecu pin 47 (Emissions fault lamp, unused)
3 - wht/blu - vehicle speed signal
4 - red/black - starter motor pin 50
8 - blk/red - oil level temp sensor pin 1 (ignition live)
9 - blu/gry - oil level/temp sensor pin 3 (sensor feed to clocks)
10 - yel - ecu pin 81 (mpg signal, unused)

T10e
1 - red/grn - power to ecu and coilpacks from supply relay
2 - red/brn - ecu pin 48 (EPC fault lamp, unused)
4 - red/grn - ignition live (10a fuse)
5 - grn/yel - power to injectors (fuel pump relay, 20a fuse)
6 - wht/yel - ecu pin 80 (fuel system diagnostic pump, unused)
8 - grn/yel - power for engine control valves (from fuel relay, 15a fuse)

T15a - 15 pin, white
1 - yel/blu - DBW pedal pin 4 (T6r black plug pin 1)
2 - yel/pur - DBW pedal pin 2 (T6r black plug pin 2)
3 - brn/red - DBW pedal pin 3 (T6r black plug pin 3)
4 - gry/yel - DBW pedal pin 5 (T6r black plug pin 4)
5 - gry - DBW pedal pin 1 (T6r black plug pin 5)
6 - brn/grn - DBW pedal pin 6 (T6r black plug pin 6)
7 - red/gry - cruise control
8 - blu - cruise control
9 - red/yel - cruise control
10 - blk/wht - cruise control
11 - red/black - brake light switch pin 2 (brakes on)
12 - wht/red - brake light switch pin 4 (cruise control brake switch)
13 - red/grn - clutch switch

T15s - 15 pin, red
1 - grn/brn - ABS unit (only for models with TCS)
2 - blk/yel - speed boost signal (aircon/heated screen switch)
3 - blk/gry - aircon
5 - blk/pur - ecu pin 30 (unused)
14 - org/brn - CAN-BUS LOW
15 - org/blk - CAN-BUS HIGH

 

unfortunately I have no data for the RX8 looms, if you have a wiring diagram to hand I can try and reverse engineer it for you

 

have a look in my signature link for the VW wiring diagrams, plus I've listed all the pins on the ecu loom plugs to fusebox you need to splice up in my post above, should do you on the APU side. just need to find RX8 wiring diagrams