Just done my diagnostics as i thought my blowers weren't working properly and i've hit this...an open circuit detected on the DEF Duct Sensor. WHat the hell is that?! Something to do with defrosting apparently!

 

Please help, its all irish to me!!

 

Rich

 

oh and does anyone know if the blowers are supposed to push air through the front and side level vents or whether its only footwell and screen?!!

What year model do you have. I tried to do a diagnositcs on the heating but couldnt find anything to say what the numbers ment?

mines a 1990.

Oh and maybe its a broken wire you have to that sensor.

Just done my diagnostics as i thought my blowers weren't working properly and i've hit this...an open circuit detected on the DEF Duct Sensor. WHat the hell is that?! Something to do with defrosting apparently!

 

Please help, its all irish to me!!

 

Rich

 

oh and does anyone know if the blowers are supposed to push air through the front and side level vents or whether its only footwell and screen?!!

DEF duct sensor will be located in the windscreen duct. As Rodders says, it could be a broken wire in the loom to it (maybe trapped) or a knacked sensor. I'll look in the manual for you to see if I can find anything.

 

Rodders, same to you, I'll see what I can find.

 

HTH

DEF Duct sensor location >> http://300zx.co.uk/cgi-bin/manual.cgi?list=ha&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=135&design=default&total=168

 

Open circuit procedure for DEF duct >> http://300zx.co.uk/cgi-bin/manual.cgi?list=ha&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=144&design=default&total=168

 

HTH

 

....I tried to do a diagnositcs on the heating but couldnt find anything to say what the numbers ment?

mines a 1990.

Here you go Rodders, Self Diagnosis Chart using on-Board Self-Diagnostic System

 

HTH

Dave

...oh and does anyone know if the blowers are supposed to push air through the front and side level vents or whether its only footwell and screen?!!

Missed this bit earlier.

On a series one model (up to late '92) it was all automatically controlled by the Air-Con Amp. This took reading from all the sensors and distributed the air-flow accordingly. This was the same for the later spec air-con unit, except that you could fully override this and direct the air wherever you wished (incidentally, you can swap the air-con amp and control pod over from series one to two)

So the answer to your question is that they are, depending on system requirements at that particular time. Saying that, once everything is up to temp, then it should be blowing out of the centre vents.

 

HTH

thank you very much for your help, all i have to do now, is tear my dash apart to find the sensor, and then try to work ou whether i forgot to install it when i did the heater matrix, or if i simply didn't plug it in! What i don't get is, it says in the manual its on the same loom as the sunload sensor but when i reinstalled the dash there was only the sunload sensor on its own little bit of wire. Bit lost. Is this a series 2 feature?!

 

Ok will shred car at weekend, and let you know whether i survived!

 

Rich

cheers mate, ill have a little more of a play over the weekend.