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VW Passat 1993 Cooling Fan Control Module Input/Output listing

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VW Passat (B3) 1993 Cooling Fan Control Module Input/Output listing

Module connector/ terminal T4/1 T4/2 T4/3 T4/4 T8e/1 T8e/2 T8e/3 T8e/4 T8e/5 T8e/6 T8e/7 T8e/8

Description Power out to Coolant Fan V7 - HI speed Power out to Coolant Fan V7 - MED speed Power in from J32 A/C Relay and fuse S19, and F18 Coolant Fan Control Thermal Switch Terminal 2 Power in from Battery positive Power out to J206 Fuel Pump After Run Control Module Input signal for MED speed Coolant Fan operation from F18 Coolant Fan Control Thermal Switch and/or F129 A/C Pressure Switch Input signal for HI speed Coolant Fan operation from F165 Third Speed Coolant Fan Thermal Switch Power in from fuse S13 Power out to N25 A/C Compressor Clutch Input signal from E33 A/C Evaporator Temperature Switch (anti-icing) and J44 A/C Clutch Relay Ground connection 193 in wiring harness Power out to F87 After Run Coolant Fan Control Thermal Switch

VW

Passat (B3) 1993 Radiator Cooling Fan operation

Fan speed LOW Description Operation is by F18 Coolant Fan Control Thermal Switch VW Terminal 2 at approximately 95°C or when A/C is switched on through J32 A/C Relay. Operation is independent of J293 Coolant Fan Control Module. Operation is by F18 Coolant Fan Control Thermal Switch Terminal 1 at approximately 102°C and/or F129 A/C Pressure Switch at A/C high side pressure of approximately 15 Bar (221 psi). Operation is controlled by J293 Coolant Fan Control Module. Operation is only by F165 Third Speed Coolant Fan Thermal Switch at approximately 119°C. Operation is controlled by J293 Coolant Fan Control Module. High speed fan operation occurs at near overheat conditions only. Note that the A/C Compressor clutch will also disengage at approximately 112°C through F163 A/C Cut-Out Thermal Switch.

MED

HIGH

Passat (B3) 1993 Cooling Fan Wiring Diagram

Description Coolant Circulation Pump, V50 Coolant Fan, V7 Coolant FC (Fan Control) Control Module J293 Coolant FC (Fan Control) Thermoswitch, F18 Current track 9 5-7 4-12 1-3

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11/08/2005 01:09 PM

VW Passat 1993 Cooling Fan Control Module Input/Output listing

http://www.bentleypublishers.com/tech/vw/vw.b3.1993.wiring.coolin...

10 11 14

Coolant FC (Fan Control) Thermoswitch F87 ECT (Engine Coolant Temperature) Sensor, G2 Third Speed Coolant Fan Control Thermoswitch, F165

Wire connectors T2 - double, behind relay panel T2n - double, behind relay panel T2p - double, behind relay panel T4 - four point, on Coolant FC (Fan Control) Control Module T8e - eight point, on Coolant FC (Fan Control) Control Module T28 - twenty-eight point, on Instrument Cluster T42 - fourty-two point, on Cylinder Head, left Welded wiring harness points K21 - wire connection -1-, in coolant fan wiring harness K28 - plus connection (15), in coolant fan wiring harness Ground connections 15 - ground connection, on cylinder-head 182 - ground connection -1-, in engine compartment wiring harness 193 - ground connection -1-, in coolant fan wiring harness

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