|
#1
|
|||
|
|||
Re: HFS-6 brown wire fail safe question
So you are saying join the black and brown together and solder them to the orange wire (test mode connector +) at the ecu? That seems like a loop will be created. The black is listed as normally closed and the brown is listed as normally open
Last edited by Team Scream; 27-05-2016 at 11:32 PM. |
#2
|
|||
|
|||
Re: HFS-6 fail safe question Subaru WRX/Sti/FXT etc.
Quote:
Anyway, the correct answer to this problem is the following: White wire to ground. Black wire (N/O) to B135 Pin B27 B135 Pin B27 (2006 Subaru WRX) is the ONLY ORANGE wire on that connector. It is the pin on the ECU that gets grounded when you connect the green test mode connectors under the dash to flash a new map or reset the ECU. The beauty of using that circuit as a fail safe trigger input is that it does multiple things to protect the engine in the event of a malfunction. (1) It drops boost to wastegate pressure only. (2) It triggers a CEL (3) It drops timing to (IAM=.5) which basically cuts timing across the board to 1/2 of the values in the timing table(s). For me, this is the best possible way to set up a system for total engine protection. As I sated earlier, when something goes wrong, I want to STOP everything, diagnose the problem and solve it BEFORE getting back to full power, boost and timing. When I had this system set up in my 2006 WRX with a complete STi swap, I was making 425 AWHP and the system worked FLAWLESSLY. Thanks. |
#3
|
|||
|
|||
Re: HFS-6 fail safe question Subaru WRX/Sti/FXT etc.
Quote:
Start again: DR= DR0 White wire to test mode Black wire to ground or DR = DRO Black wire to test mode White wire to ground The HFS6 does not have an orange wire.
__________________
Richard L aquamist technical support |
#4
|
|||
|
|||
Re: HFS-6 fail safe question Subaru WRX/Sti/FXT etc.
Quote:
What is DR=DRO ? I am confused with that line. The orange wire is not on the HFS-6 but rather is the wire on the Subaru ECU that is used to ground the green test mode connection signal the ECU receives when you plug the green test mode connectors together. My observations indicate that when the white wire is grounded, and the system is NOT energized (power off or switch on the gauge is off) the black wire is also grounded. It is only when the system is energized and the switch on the gauge is depressed that the circuit switches open. This is a problem when first starting the car. It triggers a CEL when starting the car some times. What I really need for this to be perfectly effective, is a circuit that is OPEN at all times UNLESS the fail safe is TRIGGERED. The only time that circuit should be closed (grounded) is when the system triggers fail safe, or the HFS-6 is switched off at the gauge. |
#5
|
|||
|
|||
Re: HFS-6 brown wire fail safe question
Quote:
No and No. I made a mistake. start aqain, black wire to ground and white wire to the failsafe pin of your equipment (green connector). Orange wire is not used make sure DR0 is set.
__________________
Richard L aquamist technical support |
|
|