oh goody, something to wake me up on a monday
i feel a long post coming.
if you've fit the entire coupe loom and associated parts then the only places where you would have joined the wires is at the wheel sensors and the lives and earths. these joins are what we call the interfaces. you need to check they have all been done correctly.
lets go through and see where the potential for error is in these interfaces.
first thing i notice on the diags is that the wheel sensors are positioned in opposite ways. on the marea diag the input and output wires on each sensor are on opposite sides to the input and output wires on the coupe diag. if you didnt notice that then all your wheel sensor wiring would be backward.
for example, sensor 80 at top right of coupe diag has the input wire or the right (cant read colour as its too blurry), but on the marea diag its on the left. you can tell which side is which by looking inside the sensor symbol to see that one side has a straight line going to the top of the indictor, and the other has a short line coming form the bottom of the inductor. these differences on the diags can be misleading, so its always important to make sure your circuits flow the correct way (even though an inductive sensor like the wheel sensors).
next on the list is the lives. on the marea there are 3 loves going to the controller, all from a common single live (form the 60a ABS sytem fuse). on the coupe this same fuse is used, but it only splits into 2 lives for the controller. this means the only point you can join the coupe loom to the marea's fused power supply is where the coupe has joined its 2 lives into 1. that single live must be joined to the fuse's live. if you dont do it like that you can end up with only 1 of the 2 lives getting a signal.
there are also lives for other things. on the marea we see one live going from a 40a fuse in the fisebox down to the part numbered 12. this also happens on the coupe, so you would join the coupe's live wire to the car's output from that same 40a fuse. however the coupe also has a second fused live from a 60a fuse in the fusebox. this live goes to the part numbered 96 on the diag. obviously this fuse and live wil be missing on the marea, so you would need to install it sperately and then connect it to the coupe loom.
ok, that leaves the earthing situation. on the marea there are 2 wires (pjns 9 and 27) that come out of the controller and join to a single earth point. on the coupe this is different, pin 19 is connected ot that earth, but there is also the addition of the earth wire from the part numbered 6.
this part's black wire must be joined to the controller earth from pin19, and then both sent direct to a chassis earth.
another earth issue is the coupe's controller has a second seperate earth point for its pin16 wire. this is not present on the marea. obviously your coupe loom will have that wire, so all you need to do is earth it somewhere. to be safe, make it a seperate point the other earth (as it would be on the coupe).
thats the interfaces covered. since you're fitting a complete coupe ABS system the internal aspects dont matter as long as you have
every single part on the coupe diag fitted to your car and connected to the coupe loom as it should be. check that is true by doing a quick component count and location check, ticking each off as you do (use the position diag from the manual).
