I fitted the bracing to the car, and trial fitted the column. This then identified where the ECU could and couldn't go. Trying to avoid having to lengthen the sensor wires, and keep the ECU above the dash tray, I opted to mount the ECU to the motor itself. This involved cutting the mounting lugs off the ECU and opening out the radius to keep it closer to the motor.
I then used a length of stainless to form a clamp that bolts to the ECU mount. I place a piece of rubber under the mount which holds the ECU very tightly.
Once I trial fitted the column and everything fitted, I ran the wires for the following:
1mm² wire from the ECU round plug for the speed control from the CANEMS ecu
1mm² wire from the fuse box (5A) to supply the ECU
1mm² wire from dashboard multiplug E for RPM signal
6mm² wire from new 50A fuse
6mm² wire from -ve battery connection
I cut them to length, then crimped on new connectors bought from SimtekUK.
I have since removed the column and new bracing, and it is now being hot metal sprayed and painted prior to final fitting.
I had to re-wire inside the 55-pin connector under the guidance of Dave from CANEMS to enable the control of the Power Steering.
Firstly, I had to move the CAM sensor wire from pin 8 to pin 39.
Then the VSS from the gearbox was connected into pins 8 & 9 (Polarity doesn’t matter and preferably shielded cable to be used – shield connected to pin 19). VSS wires were teed-off to the speedometer on the dash.
I then had to install a 470 Ohm pullup resistor across pins 37 & 40 which allows the ECU to create a square wave required for the Corsa Unit.
The ECU provides the Speed output to the EPAS from Pin 40 (to Blue/Red Wire), and the RPM signal from Pin 6 (to Green Wire).
Best double check with Dave at CANEMS to see how his supplied harness is now wired and how the ECU is programmed in case mine is a one off…. I wouldn’t want you to fry your ECU!
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