S40 fuel injection. Question

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Bigwheels
Posts: 2
Joined: Sun Oct 22, 2017 4:40 am
ECU Model: S40 Pro
Firmware Version: 75.01

S40 fuel injection. Question

Post by Bigwheels »

Hi guys , just wired up my S 40. The question is, I have 12 volts showing at the injecter plug as the main feed but 6 volts showing from pins 8 and 9 on the Ecu. Should I have voltage showing from the ecu. Is this correct.
Rob Stevens
Posts: 1247
Joined: Thu Jul 28, 2011 4:10 am
ECU Model: S100 Pro
Distributor: None-Coil On Plug :)

Re: S40 fuel injection. Question

Post by Rob Stevens »

With the injector connected you are reading the same 12v but just through the resistance of the injector hence the reduced voltage.
I think you need to clarify that you have all components attached?
Or just run an injector test via 'display and test functions' this will quickly reveal any issues.
Bigwheels
Posts: 2
Joined: Sun Oct 22, 2017 4:40 am
ECU Model: S40 Pro
Firmware Version: 75.01

Re: S40 fuel injection. Question

Post by Bigwheels »

Hi Rob, thanks for the quick reply. I worded the question badly so just to clarify I meant the loom plug not the injector plug ie before I have connected to go live so to speak. So what I have is a Citroen six point loom connector showing 12 volts on the two centre terminals and 6 volts on the two outer terminals with the ignition turned on but not cranking.
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