355 5.2 engine harness

You must have a different question, other than how many wires. Did you break a wire or two?

 

Anything in this message thread which might help?

www.ferrarichat.com/forum/348-355-sponsored-bradan/371625-anyone-know-motronic-5-2-pinouts.html

 

Maybe he is considering doing something smart like installing a bulkhead connector? If so good for him. That was a really dumb piece of engineering. They should have at least not made the hole JUST big enough to get the connectors through.

Every time I am pulling cables through I feel a strong urge to be introduced to those responsible for the design.

 

Its 88 I think but I'm senile and forget silly stuff like names

 

There is an 88 pin connector but not all pins are used.
There are 3 other connectors with 3-8 pins each.
So, if you provide 100 pins, you will have just enough.

I agree with Rifledriver, they could have made it 1/4 inch larger and life would be grand

 

You and me both. I am actually adding additional pins for future expansion (so to speak). I plan to run aftermarket equipment as well what is required for the factory harness. I went with 30 pin connectors (6 Metri-Pack 480 series terminals and 24 Metri-Pack 280 series terminals).

In theory, the 5.2 ECU has 62 pins used on the connector, in reality I will probably need only 54 of these pins (CANBUS and some exhaust related stuff that I can ignore wiring to the ECU in my case). So three of these 30 pin bulkhead connectors is overkill.

So how many wires in the actual loom is really immaterial, but here is a list:

Ignition/Power:
Row 1 26 Red 12V Fused
Row 2 54 Green 12V Power from Relay, Pin 87B
Row 1 27 Yellow Red Main Relay Controlling 12V to Ignition System
Row 3 56 Yellow Black Ignition Lock

Grounds:
Row 2 46 Blue Black Ground Analog
Row 2 34 Black Ground Chassis
Row 2 55 Green Black Ground Chassis
Row 3 71 Black White Ground Chassis
Row 1 6 Black Ground, Chassis
Row 1 28 Black Ground, Shield

Engine Timing:
Row 3 78 Purple Black Crank Position Sensor pin 1
Row 1 20 Purple Crank Position Sensor pin 2
Row 1 21 Pink Cam Phase Sensor Pin 2

Timing Adjustment:
Row 3 70 Yellow Black Knock Sensor 1, Pin 1
Row 2 40 Yellow Knock Sensor 2, Pin 1

Primary Fuel Inputs:
Row 1 17 Red Black MAF Pin 2
Row 2 45 Red White MAF pin 4
Row 2 53 Red Blue Throttle Position Pin 2
Row 2 44 Grey White Throttle Position Pin 3

Closed Loop Fuel Inputs:
Row 3 77 Purple O2 Sensor, Bank 1, Post Cat, Pin A
Row 3 76 Purple O2 Sensor, Bank 2, Post Cat, Pin A
Row 1 19 Green O2 sensor, Pre Cat, Bank 1, Pin A
Row 1 18 Green O2 sensor, Pre Cat, Bank 2, Pin A

Other ECU Inputs:
Row 1 16 Blue Grey Air Tempertature Sensor Pin 1
Row 3 74 Grey Black Water Temperature Sensor 2, Pin 1
Row 3 73 Purple Temperature AGK

Ignition Outputs:
Row 2 51 Pink Black Coil Bank 1, 1-4, Pin 1
Row 2 49 Purple White Coil Bank 1, 1-4, Pin 3
Row 2 52 Purple Black Coil Bank 2, 5-8, Pin 1
Row 2 50 Green Coil Bank 2, 5-8, Pin 3

Fuel Outputs:
Row 1 3 Black White Injector Cylinder 1
Row 1 7 Blue White Injector Cylinder 2
Row 1 4 Yellow Red Injector Cylinder 3
Row 1 5 Yellow Injector Cylinder 4
Row 2 31 White Injector Cylinder 5
Row 2 35 Green Blue Injector Cylinder 6
Row 2 32 Blue Black Injector Cylinder 7
Row 2 33 Yellow Green Injector Cylinder 8

Catalytic Converter Overtemp:
Row 3 66 Green Red Slow Down Light
Row 1 14 Lite Blue Thermal TCU Bank 1
Row 1 15 White Thermal TCU Bank 2

Idle Air Control:
Row 1 2 White Green Idle Valve Pin 1
Row 2 29 Blue White Idle Valve Pin 3

Ancillary Functions:
Row 3 64 Yellow Blue By-Pass Valve Flap
Row 3 63 Yellow Green Fuel Pump Relay Pin 85
Row 3 57 Blue Green Secondary airpump Relay Pin 85
Row 3 62 Red Blue Cooling Fan Relay Pin 85
Row 3 69 Orange White AC Turned On
Row 3 68 Green Black Air Pump
Row 3 61 Grey Green Tank Vent
Row 1 1 White Brown O2 Sensors, Post Cat, Heater
Row 2 30 Brown O2 Sensors, Pre-Cat, Heater
Row 3 79 Yellow White Speed Signal

Diagnostic:
Row 3 60 Blue Black Programmer Memory
Row 3 84 NC CAN BUS Ground (not used by Ferrari)
Row 3 85 NC CAN BUS Marelli SG KUP (not used by Ferrari)
Row 3 86 NC CAN BUS Marelli SG KUP (not used by Ferrari)
Row 1 8 Red White Check Engine Light (CEL)
Row 3 88 Brown Grey Diagnostic Port Control (OBD2?)
Row 3 80 Brown Black Diagnostic Port Input (OBD2?)
Row 3 87 Red Grey Diagnostic Port Output (OBD2?)

Row 2 42 Pink Black NC (unknown function on Ferrari)

 

Put the ECU on the rear subframe so you just drop and go

My 355 CH has it and the 348 is getting it next service, I want to get them in the air they get hot behind the seats