1993 Audi 90 No heat or window operation

Hi truebudo, Thank you for the donation. After checking through, the only connection I can find between the blower and power windows is the Load Reduction Relay Test for power supply to fuse # 17 ( 30A ) and Black/Blue wire to power window control module. If power is not available, the relay is either bad or not being energised when ignition switch is turned ON.

FUSE PANEL IDENTIFICATION (1990-95) 1 - 15 Amp Foglights (Front & Rear) 2 - 15 Amp Emergency Flasher 3 - 25 Amp (1990-93) 3 - 30 Amp (1994-95) Horn, Stoplights, Seat Heating 4 - 15 Amp Luggage Compartment, Interior & Vanity Mirror Lights, Clock, Socket, Cigarette Lighter, Radio, Climate Control System, Trip Computer  5 - 30 Amp Radiator Fan (High Speed) 6 - 5 Amp Right Side Marker Lights 7 - 5 Amp Left Side Marker Lights 8 - 10 Amp Right High Beam Headlight, High Beam Indicator 9 - 10 Amp Left High Beam Headlight 10 - 10 Amp Right Low Beam Headlight 11 - 10 Amp Left Low Beam Headlight 12 - 15 Amp Combination Instrument, Back-Up Lights, Cruise Control, Anti -Lock Brake System (ABS), Cooling Fan Control Unit, Differential Lock (Quattro models), Auto-Check System, Airbag Warning Light 13 - 15 Amp Fuel Pump 14 - 5 Amp License Plate Light, Engine & Glove Compartments Lights 15 - 25 Amp Windshield Wipers, Turn Signals, A/C, Heated Washer Jets, Radiator Fan Switch 16 - 30 Amp Rear Window Defogger, Heating Mirror 17 - 30 Amp Climate Control System (Blower) 18 - 5 Amp Electric Mirrors 19 - 10 Amp Central Locking System, Heated Door Locks, Anti-Theft Alarm System 20 - 30 Amp Radiator Fan (Low Speed), Radiator Fan Relay 21 - 10 Amp Run-On Pump 22 - Blank 23 - 30 Amp Passenger Seat Adjuster, License Plate Light, Driver's Seat Memory Switch Controls, DRL  24 - Blank (1990-93) 24 - 10 Amp (1994-95) Water Pump 25 - 30 Amp (1990-93) Seat Heating 25 - 5/10 Amp (1994-95) Heated Oxygen Sensor 26 - 5 Amp (1990-93) License Plate Light 26 - 30 Amp (1994-95) Trailer Receptacle 27 - 10 Amp Engine Timing I 28 - 15 Amp Engine Timing II 29 - Spare Fuses Not Used 30 - 5 Amp (1991-95) (Not Shown) Cruise Control (4-Speed Automatic Transmission) 31 - 15 Amp (Not Shown) ABS Cruise Control, Differential Lock 32 - 15/20 Amp (Not Shown) Engine Timing III

AUXILIARY RELAY PANEL IDENTIFICATION 1 - Relay ABS Combination 2 - Control Unit Seat Belt, Park Light & Radio Warning 3 - Control Unit Interior Light Delay 4 - Control Unit A/C 5 - Blank 6 - Control Unit Oil Pressure Or Front Lamp 7 - Blank 8 - Blank 9 - Circuit Breaker Seats & Windows 10 - Blank 11 - Blank 12 - Blank 13 - Relay Passenger Heated Seat 14 - Relay Driver Heated Seat 15 - Control Unit Power Window 16 - Control Unit Power Window 17 - Blank 18 - Relay Radiator Cooling Fan After Run

I am having basically the same problem with my 1994 audi 90 S. The power windows work once in awhile, but mostly not. I have chwecked fuses, but it does not seem like any are burnt. I was wondering if this guy ever found out exactly what was wrong?

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Wiggle (apply pressure) the ignition switch to see if things come back to life.

Thomas