Quote:
Originally Posted by leman_opc
Just gave a careful read to the installation guide, it says that normally failsafe on OE solenoid should be wired as white wire to ECU and brown wire to solenoid (when the OE ECU to solenoid wire is spliced).
Just before that the manual says that brown wire is normally opened link to white, and black is normally closed. So I imagine normally (when the hfs3 is on and no failsafe is triggered) the solenoid should have its pulse from ECU, so it's white wire to ECU and black to solenoid. When the failsafe is on or the whole hfs3 is off then it's no voltage to solenoid and the boost is limited to wastegate actuator breakdown pressure.
So if the black wire is normally closed it looks like the black wire should be connected to solenoid. But the manual says brown...
Lost a bit now - would really appreciate your help Richard on this...
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As soon as you turn the system on, the relay is energised. This invert the "normally opened" to "normally closed" orientations. We did this because if power is interrupted at any point, the system will automatically cut boost. This is a "power fail" failsafe.
This diagram will help you:
