E30 Heater Control wiring diagram??

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   Do any of you guys have a wiring diagram which covers the heater control for a '90 Sport Evo?  I am after a schematic which covers the makeup of the controller itself as well as the wires to it.
My car has air-con, and I am told has the (rare for E30) full climate control.  As I understand it the "red to blue" heater control knob controls not only the heater water valve/solenoid, but also an actuator motor which in turn controls the airflow over the heater matrix itself.  The controller is faulty, as it only controls the air flap actuator intermitently, and it fails to cold.  The unit is very expensive from BMW (something like �300 plus) and I suspect there is a dry joint on it somewhere, as it works if you twist the box very slightly.  With the diagram, I stand a better chance of being able to test where the circuit is dodgy.
Life is funny - just sorted out the aircon again and now I have to start worrying about the cold winter coming up!
Any help appreciated - Thanks

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SFH3L Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Really Senior Member I Joined: 03-October-2004 Location: Near Buckingham Status: Offline Points: 447	Post Options Post Reply Quote SFH3L Report Post Thanks(0) Quote Reply Topic: E30 Heater Control wiring diagram?? Posted: 02-September-2006 at 16:02
	Do any of you guys have a wiring diagram which covers the heater control for a '90 Sport Evo? I am after a schematic which covers the makeup of the controller itself as well as the wires to it. My car has air-con, and I am told has the (rare for E30) full climate control. As I understand it the "red to blue" heater control knob controls not only the heater water valve/solenoid, but also an actuator motor which in turn controls the airflow over the heater matrix itself. The controller is faulty, as it only controls the air flap actuator intermitently, and it fails to cold. The unit is very expensive from BMW (something like �300 plus) and I suspect there is a dry joint on it somewhere, as it works if you twist the box very slightly. With the diagram, I stand a better chance of being able to test where the circuit is dodgy. Life is funny - just sorted out the aircon again and now I have to start worrying about the cold winter coming up! Any help appreciated - Thanks
	Sam. the original "not for profit" organisation. Independent Financial Adviser In Buckingham My Financial Blog

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andyclient Members Profile Send Private Message Find Members Posts Add to Buddy List Really Senior Member II Joined: 26-October-2004 Location: suffolk Status: Offline Points: 648	Post Options Post Reply Quote andyclient Report Post Thanks(0) Quote Reply Posted: 05-September-2006 at 10:14
	Hi I have the M3 electrical troubleshooting manual in pdf format that covers what i think you might be after ? Its in 7 parts but i think i have found the one containing what you want but its 2.5 mb ,I can email it to you if your mailbox will accept it Did try to post the page up on the forum to see if it was what you were after, but couldn't i'm afraid Let me know Cheers Andy
	01 E46 320d Touring 88 E30 M3 Sadly Gone 93 E36 325 TD Gone but still going 87 E30 Hartge 325 (gone but not forgotten)

SFH3L Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Really Senior Member I Joined: 03-October-2004 Location: Near Buckingham Status: Offline Points: 447	Post Options Post Reply Quote SFH3L Report Post Thanks(0) Quote Reply Posted: 05-September-2006 at 12:41
	Andy, many thanks - PM sent.
	Sam. the original "not for profit" organisation. Independent Financial Adviser In Buckingham My Financial Blog