Just because I've seen numerous explanations, likely to dodgy rewiring over the years, the radiator fan (the Q16 you referred to) is supposed to come on whenever the compressor is on, but is just on a separate circuit, although triggered by the same input signal? Then the second fan comes on when the coolant hits a certain temp, and BOTH fans will come on, regardless of whether the AC is on to trigger the first fan, once the coolant temp hits an even higher threshold?
Is the principle behind using Q16 instead of Q14 is possibly the voltage load on the relay being more than the clutch relay is designed for (if it stands to reason I1 has the capacity to power both fans, then Q16 should as well)?
Sorry - just trying to wrap my brain around all of this. I'm definitely "eating the elephant" with this project at the moment.
And I was finally able to track down the GTV6 electrical diagrams (1981-1983) instead of the Molano schematics in my Cardisc set. I ran it through text recognition in Acrobat Pro, which is why the Q's appear as O's. Just FYI. This is how it breaks out:
Q HEAT/VENT - AIR CONDITIONING SYSTEM
01 Heater blower fan
02 Pneumatic pushbutton control for air conditioning
03 Pneumatic pushbutton control for ventilation
04 Heater blower fan control
05 Heater blower fan speed adjustment resistance
06 Switch on flap for heater blower fan
07 Fluid thermostat
08 Electromagnetic coupling pressure switch
09 Minimum pressure switch
010 Maximum pressure switch
011 Compressor electromagnetic coupling
012 Thermoswitch for exclusion of compressor electromagnetic coupling
013 Supplementary conditioner fan
014 Relay for supplementary conditioner fan and electromagnetic compressor coupling
015 Heater blower fan relay
016 Relay for simultaneous control of engine cooling fan and supplementary fan
017 Relay for simultaneous control of engine cooling
electromagnetic coupling and supplementary fan
as good as a car can be... briefly.
Last edited by chairmankaga; 09-11-2019 at 01:03 PM.