HOW-TO: S14 digital climate control installation - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

firejackal · 09-12-2016, 04:13 PM

Okay just now got my fan control amplifier and blower motor working, my issue with that was the fsm wiring was incorrect to the fca wiring.

But it could be because the fan control amp i bought was a used one from a "96 altima", looking online it's circuit board matched the infinity g50 (the one with a non replaceable mosfet.)
According to the fsm when looking at the unit it was fca2, fca1 on the top rows, thrn fca3 on the bottom right... After tracing the circuit board i have found it was fca3,fca1 at the top, and fca2 on the bottom right, i moved the wires in that order and it works on all fan settings.

But now my issue is the motors "click click" on all modes (stuck to B/L mode (foot and top.) I'm guessing either the motor is reversed on the jdm specs or the gears are stuck.

Also as a note since it wasn't mentioned before (gotta keep this thread alive yo) pbr +5v does not need a +5v source, the DCC supplies the 5v to the air mix door motor. While with the usdm version 12v is supplied from the ignition. I don't know if going from 12v to 5v is going to cause any implications, maybe it will just be slower?

I know the OP mentioned in his article that he couldn't get the intake door motor working on the existing harness, but it would seem to me that you would tie the 20% fresh setting with the normal 100% fresh setting, but i dont know how that circuit works, even through the FSM says it's an input, in guessing by turning it on should move the motor that much.

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09-12-2016, 04:13 PM	#40
firejackal Leaky Injector Join Date: Oct 2014 Location: Dayton, OH Posts: 71 Trader Rating: (0) Feedback Score: 0 reviews	Okay just now got my fan control amplifier and blower motor working, my issue with that was the fsm wiring was incorrect to the fca wiring. But it could be because the fan control amp i bought was a used one from a "96 altima", looking online it's circuit board matched the infinity g50 (the one with a non replaceable mosfet.) According to the fsm when looking at the unit it was fca2, fca1 on the top rows, thrn fca3 on the bottom right... After tracing the circuit board i have found it was fca3,fca1 at the top, and fca2 on the bottom right, i moved the wires in that order and it works on all fan settings. But now my issue is the motors "click click" on all modes (stuck to B/L mode (foot and top.) I'm guessing either the motor is reversed on the jdm specs or the gears are stuck. Also as a note since it wasn't mentioned before (gotta keep this thread alive yo) pbr +5v does not need a +5v source, the DCC supplies the 5v to the air mix door motor. While with the usdm version 12v is supplied from the ignition. I don't know if going from 12v to 5v is going to cause any implications, maybe it will just be slower? I know the OP mentioned in his article that he couldn't get the intake door motor working on the existing harness, but it would seem to me that you would tie the 20% fresh setting with the normal 100% fresh setting, but i dont know how that circuit works, even through the FSM says it's an input, in guessing by turning it on should move the motor that much.