[iyade46]

Audi Q7 2007  diesel injectors didn't get signal pulse and no fault codes

here is the vin number WAUZZZ4L47D083485
Thanks in advance

[iyade46]

any idea please i also check another ecu but no pulse for injectors too

[coxma2000]

check if you have rail pressure above 120 bar,under this no pulse to injectors

[iyade46]

check if you have rail pressure above 120 bar,under this no pulse to injectors

yes after cranking for seconds pressure come over 120 bar

[lsalt100]

EDC16CP34? is it original SW or was done some modification of FLS/ECU?

[iyade46]

EDC16CP34? is it original SW or was done some modification of FLS/ECU?

car was driving fine in the night it wont start we check and there is no fuel high pressure pressure regulator changed and the fuel pressure come back and the car wont start too i check no faults code and i try to check the fuel injectors signal and i notice there is no signal i check every thing didn't find any thing wrong i get another ecu and tested car still the same no fuel injector signal

[Probleemkind]

Did you check the fuse or relais? Maybe

[iyade46]

Did you check the fuse or relais? Maybe

every thing seems fine 
all fuses ok 
no fault codes 
it drive me crazy

[Probleemkind]

Did you check the fuse or relais? Maybe

every thing seems fine 
all fuses ok 
no fault codes 
it drive me crazy

I will ask some Audi specialist for you when i see him, surely can't be that big of a problem. Maybe overseen something. Keep us updated.

[lsalt100]

Sometimes it should be faulty crank speed/position sensor....

(in my case still don't have got rail pressure looks like pump or regulation valve)