Quote:
Originally Posted by leman_opc
OK, understood, so before the system is triggered (e.g. the car is on idle, IDC is below the set threshold to activate WMI) it is correct that I have no "B" symbol on the gauge.
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This is 100% correct.
Quote:
Originally Posted by leman_opc
So, combining this outcome with the diagram on the previous page of this thread: no "B" led does not necessarily mean that the failsafe / boost off is active. E.g. in the situation above (the car is on idle, system not triggered due to IDC below the threshold, no "B" led on the gauge) the BCS is still controlled by ECU (white wire linked to brown). In case then the IDC increases and the system is triggered and the flow is outside of "safe window" the "B" led will blink but then stay off and failsafe mode would be switched on (white wire switched to black), when the IDC will the go below the system activation threshold the failsafe mode would be off once again (white wire switched back to black). Correct?
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Just to confirm you are correct:
1. "B" led does not come no at idle or the system is not triggered.
2. During this stage, BCV is still under the control of the ECU.
Also correct:
3. When the system is triggered, the "B" led will come on and stay on as long as the flow is inside the WL and WH. Brown and white still connected.
4. If the flow is outside the WL and WH, the "B" led willgo out and the white and black wire will be connected.
This diagram may help you:
