355 Wiring diagram

I have change ferrari part number 162916 and 169474 and still same.
No, not getting spark when cracking the engine.

 

Interesting. Are you getting power at the fuel pump fuse continuously when cranking the engine. This is a good sign that the wiring for the crank sensor is ok. The pump is turned on when the rpms reach 300 (as sensed by the crank sensor). This is also a good sign that the fuel pump relay and the Injector Control relay are operating.

 

@Qavion
Thank you very much for your support. The car finally started and the problem was the security box, as you can see pictures attached.
Because maybe time too long and the capacitor was leaking causing the board damage not sending signal to ecu. (See picture from microscope)
We did some repair on the board and replace with new capacitor, then the car is back to running condition.

Couldn't of done it without your diagrams, once again thanks for your support.

And by any chances you might have the diagram for F355 F1 Transmission ECU?
My buddy's F355 F1 also have some problem.

 

Do you mean the internals of the TCU or just the F1 system wiring.

There are two diagrams for external wiring:

https://www.dropbox.com/t/enX7Y8QNelPgIEoC

https://www.dropbox.com/t/Uo6sQOqAC6Yt2zKO

 

@Qavion Thank you very much for your support! We will try our best to find the problem.

 

Image Unavailable, Please Login Image Unavailable, Please Login Que bueno que lograste solucionar el problema, actualmente tengo un problema con mi Challenge del 97, todo empezó cuando estaba en el autódromo dando vueltas y filmando un comercial, luego logré dar unas vueltas rápidas, pero en una curva muy cerrada a la izquierda provocó que fallara el motor izquierdo del cilindro 5 al 8, regresé lentamente a pits con el check puesto del 5 al 8, revisé visualmente y no encontré nada, así que eso fue todo por ese día, llegué al taller y revisé todo encontrando un cable cortado en el módulo de encendido, lo reparé y solucioné la falta de chispa de ese lado pero ahora no tengo pulso de inyector en ningún lado, ni del 1 al 4 ni del 5 al 8... ¿me puedes compartir los diagramas de cableado, y dónde se encuentra ese módulo de seguridad=? no sé si mi carro lo tenga, es un Challenge con llave normal

 

I don't think Challenges have security modules.

Unfortunately, I don't have diagrams for the Challenge. Is the engine management system 2.7? Is that the coil power module wiring you have in your hand?

Could you have shorted out the wiring, causing the fuses for the injectors to blow? Do you have 12 volts at any of the injectors with the ignition key on? Did you check the injector fuses in the passenger footwell?

2.7 (road) car diagrams here:
Right bank (1~4)
https://www.dropbox.com/t/bn1GbOSaidoDRUCf

Left bank (5~8)
https://www.dropbox.com/t/r5xvyMxaEXMloCqQ

Power feed:
https://www.dropbox.com/t/TG4iiHqckKzuWYux

 

I'm not sure if challenge have the security box, maybe if expert @Qavion knows if 355 challenge have security box.

 

I don't know for sure, and it may vary from car to car. This example doesn't have an alarm LED

https://www.motorcargallery.com/cars/291/1997-ferrari-f355-challenge

 

All F355 Challenge cars are Motronic 2.7 and do not have security boxes. 1996-1999 cars were homologized to 2.7 by the Factory.

 

https://www.dropbox.com/t/3VxFhkD0Ghooxvwe

https://www.dropbox.com/t/78yRV1Pt6uCzusdI

https://www.dropbox.com/t/Q290ozJrCA9bnUyM

As Barry says, all Challenges are 2.7 and do not have security modules. Unfortunately, the wiring diagrams do not show how the emergency cutoff switch is wired into the engine management system (if at all)

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Do you have fuel pressure on the 5~8 bank? Have you tried swapping the injector relays?

 

Definitivamente estoy perdido, revise todos los cables, cambie sensores ckp y cmp, me llega positivo a los inyectores pero no me llega negativo de la ecu, he revisado las señales que llegan al conector, en el pin 1 tengo 12v directo, el pin 2 tengo 5v del pin 8 de la ecu, y el pin 3 tengo tierra, ahora se me hace muy raro que tenga 12v y 5v en el conector del cmp, segun el diagrama que me envias deberia ir del pin 1 al 38 de la ecu, y en el conector de mi ecu no tengo ningun pin en el lugar 38 ni 39..


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Puedo agregar que si le rocío un poco de combustible arranca y luego se para, con lo que tengo chispa y queda lista la distribución. But I still have no negative injector pulse anywhere on the engine.

 

Pin 39 is only used on USA cars. I don't understand why you have no pin on 38. Has it been pushed back? Is it locked in place properly?

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I tried to compare your voltage readings with my 5.2 car, but had 12 volts on pin 1, 12 volts (also) on pin 2 and zero volts on pin 3 (ground)

I, too, am lost

 

A common problem is the wiring going to the crank sensors, but if both banks are not working, it probably won't be a crank sensor problem.

I have heard that the trigger for the cam sensor can break.

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I think you will need an oscilloscope to see if you are getting the right signals from the sensors during cranking.

 

Sorry, I forgot only 5~8 cylinders aren't working. Could be faulty crank sensor wiring.

Do you have one cam sensor or two?

 

If you only have one cam sensor, this is provided with 12 volts (to pin 1) from the Right ECU (pin 38). Are you saying you have no pin 38 on the left or right ECU?

The Left ECU has no pin 38. If you have two cam sensors, the Left Cam Sensor uses Left ECU pins 37, 8 and ground. If you have two cam sensors and you have 12 volts on pin 1 of the left cam sensor, it means that relay left hand injector relay "O" is ok. Is the left fuel pump running with the key on?

Do you have two fuel pumps?

 

¡LOGRÉ HACER FUNCIONAR! Había dos cables pegados... que van a la ECU izquierda desde el sensor CMP, por lo que las señales llegaban bien, pero estaban unidos, tenían continuidad entre ellos...Ya habían intervenido,
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Did you measure the voltages on the pins after the repair?

¿Mediste los voltajes en el pin después de la reparación?