ECU Plug B
The first plug I'm going to cover is ECU plug B. It's the first one on the left when you look at it from the back of the ECU, it has 26 pins in it.
The first things of interest to me is the 5sfe only has 2 injector outputs so the batch fire injector wires need to be removed.
Second thing of interest is, this is where a lot of A/T wiring is so all that needs to be removed.
3rd thing of interest is the distributor wiring. The 5sfe signal wires appear to be of a thinner guage, 20 or 22. The 3sgte looks to be 18 or 20. The colors are correct at the ecu, but need to be moved on the plug to the dizzy. This should be fine to use since the dizzy is now nothing more than a cam/crank sensor to me. It looks like Red and Blue need to be swapped.
*edit- Forgot pic, see post 5
4th thing of interest. TVIS wire needs to be installed. I also removed egr wiring.
Pins are read top right pin 1, top left pin 13, bottom right pin 14, bottom left pin 26.
EGR Blue-Black B23
P ??? B22
ISCV ac idle up Yellow-Blue B7
L neutral start Violet-Red B19
2 neutral start Violet-Green B6
SL A/T Blue-Yellow B1
S1 A/T Violet B2
S2 A/T Brown-Yellow B15
Need to add
Injector 1 red B12
Injector 2 green B11
Injector 3 yellow B25
Injector 4 blue B24
TVIS output Blue-Red B2 repurpose for ?
Need to move
IGF Black-Yellow B3 to B19
This is now the Ignition B output wire. IGT is now Ignition A. IGF is the feedback to ecu to make sure the coil fires and throws a code if it doesn't. I'm running COP wasted spark, 1 and 4 fire together, 2 and 3 fire together. Mspnp doesn't used IGF.
ECU plug C
This is the one in the middle with 16 pins.
Not too much needs to be done here. The harness I bought was from a California emissions car with 2 OX sensors. I removed OX2 and moved PIM to that slot so it matches up with stock 3sgte. Only other thing here is e21, sensor ground. Haven't traced down what this is yet.
Pins are read top right pin 1, top left pin 8, bottom right pin 9, bottom left pin 16.
E21 Brown C18 sensor ground for A/T
TT Black C7 Its for the check connector to the A/T
OX2 White C5 Cali car emissions requirement.
PIM from C2 to C5
Its a trap! At this point I would like to talk about unofficial pin out diagrams. For the longest time I would reference this pic for pinouts because its easy to read, only to discover it's wrong when pertaining to the 92-93 3sgte. I believe this is for the 90-91 only. I found this out when probing the mspnp 26 pin DBA connector.
Last edited by Magroo
on Thu Mar 08, 2018 4:58 am, edited 1 time in total.