Re: WQ Fiesta XR4 Diagnostics/OBD2 Reverse Engineering
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With the Focus EHPAS patched into the WQ Fiesta HSCAN bus via the OBD2 port - the unit powers up when the car is started! It starts slow first, then begins to ramp up, but then stops part the way up the ramp, drops speed again, and starts pulsing in some fashion. Doesn't sound great to be honest. My power supply is only 30A, so it might be a supply limit perhaps. But it could also be much more - a PATS detection perhaps, or a fail mode since it can't find the Steering Angle Sensor on the 3rd connector.
The fight continues....
Lukeyson
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