So I posted this up on audiworld and have gotten no answers so far. I have a 1990 Coupe w/ 7A motor and the crumby GM vacuum based auto climate control. I was broken for a while and I looked into putting the later auto climate system found on cars here 1993+. The main issue people pointed out was that the speed sensor wasn't on the compressor in the 5 cyl cars. Recently ScarGo02 found that you can just flash the control unit for a 5 cyl and it will ignore the lack of a speed sensor.
I came across a 1993 90 w/ V6 at the junkyard that had the newer auto climate system the other day that uses the electric servos to control airflow. The control unit was gone but the blower motor and electric flap boxes were there along with the wiring harness so I grabbed both since the price of $15 was too cheap to pass up. So I looked over some wiring diagrams I've collected and linked most of the wires to existing ones already in my Coupe except for just a few.
If anyone has the Bentley book for the 93-95 90s and could tell me what to do with these wires and/or where they go and what kind of signal they get that would be great. The numbers correspond to the pin on the connector as described in the diagrams from this thread.
http://forums.audiworld.com/9080/msgs/412247.phtml
T10e
1 Gn/V - Data Link connector? (Don't think the Coupe has this)
T5o
1 Bl/Br - Not shown where this terminates
It ends up in T5h/5 Wire Connector pin 5, 5 Point, red, behind instrument panel.
T2at
1 Bl/Y - Not Shown where this terminates.
It ends up T2t/2 Wire Connector pin 2, double, brown, behind instrument panel.
If someone could just look behind their instrument cluster and see what those color wires on those connectors go to I can probably finish up this project.
Anyone have the control unit they want to sell/give to me? I'll post all the wiring info when I am done and have tested out the system.
Also, one other interesting thing is the lack of a heater valve on the V6 motors w/ the auto climate control. Do they just use the flaps in the box to keep hot air from reaching the cabin and pump coolant all the time to the heater core? Do 5 cylinders over in Europe with this system also have no heater valves? Thanks.
I came across a 1993 90 w/ V6 at the junkyard that had the newer auto climate system the other day that uses the electric servos to control airflow. The control unit was gone but the blower motor and electric flap boxes were there along with the wiring harness so I grabbed both since the price of $15 was too cheap to pass up. So I looked over some wiring diagrams I've collected and linked most of the wires to existing ones already in my Coupe except for just a few.
If anyone has the Bentley book for the 93-95 90s and could tell me what to do with these wires and/or where they go and what kind of signal they get that would be great. The numbers correspond to the pin on the connector as described in the diagrams from this thread.
http://forums.audiworld.com/9080/msgs/412247.phtml
T10e
1 Gn/V - Data Link connector? (Don't think the Coupe has this)
T5o
1 Bl/Br - Not shown where this terminates
It ends up in T5h/5 Wire Connector pin 5, 5 Point, red, behind instrument panel.
T2at
1 Bl/Y - Not Shown where this terminates.
It ends up T2t/2 Wire Connector pin 2, double, brown, behind instrument panel.
If someone could just look behind their instrument cluster and see what those color wires on those connectors go to I can probably finish up this project.
Anyone have the control unit they want to sell/give to me? I'll post all the wiring info when I am done and have tested out the system.
Also, one other interesting thing is the lack of a heater valve on the V6 motors w/ the auto climate control. Do they just use the flaps in the box to keep hot air from reaching the cabin and pump coolant all the time to the heater core? Do 5 cylinders over in Europe with this system also have no heater valves? Thanks.
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