If what I've found is accurate, the speedometer itself takes the VSS AC signal and converts it to a DC output that is then sent to 3 other components. The receiving components are ECCS (ECU), Power Steering and Cruise Control. So the ECU itself does not tell the Power Steering Control Unit to adjust the amount of assist.
At the moment I am attempting to confirm what type of output the speedometer is sending. Some search results state its a frequency output of 2Hz - 120Hz, others listed it as a PWM ranging from 0v to 5v, and all of them agree its DC.
I'm still digging through related posts on the forum here as well, though a lot of links on older posts are dead.
By
Silver ·
Sympton: Car wont start. No sound from pump
Tried so far:
Checked Fuel Pump Fuse
Check car had fuel
Took off fuel pipe, cranked engine and No Fuel Delivery
Checked there was power going to fuel pump and there is
Removed CAS and turned by hand with ignition on, Injectors clicked, still no sound from Fuel Pump
Cleaned up CAS, PTU and all electrica; connectors to do woth Fuel delivery
Removed Pump and had it Tested out of the Car and it worked.
Swapped ECU no difference
Swapped Fuel Pump Relay No Diference
Swapped Fuel Pump ECU No Difference
Where do i go next?