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Fan (Blower) Motor Does Not Operate

WARNING: This page is about a different car, the 2001 Saab 9-3 and 2000 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Because of fan motor high current requirements, use heavy gauge jumper wires when testing fan motor operation.
  1. Turn ignition on. Operate fan switch at each speed position. See Figure . If fan motor does not operate at any speed position, go to next step. If fan motor does not operate at speed position "1", go to step  6 . If fan motor does not operate at speed position "2", go to step  8 . If fan motor does not operate at speed position "3", go to step  10 . If fan motor does not operate at speed position "4", go to step  12 .
  2. Turn ignition off. Check fuse No. 3 (30-amp) located in main fuse box, positioned at driver's end of instrument panel. If fuse is okay, go to next step. If fuse is blown, replace fuse and recheck fan motor operation. If fuse blows again, perform repairs as necessary. See WIRING DIAGRAMS  . If fuse is okay, go to step  14 .
  3. Turn ignition off. Disconnect fan motor switch 8-pin connector. Turn ignition on. Connect a test light between ground and fan switch harness connector terminal No. 2 (Red wire). See WIRING DIAGRAMS  . If test light illuminates, go to next step. If test light does not illuminate, repair Red wire between fan switch and fuse No. 3. When repairs are complete, go to step  14 .
  4. Turn ignition off. Locate fan motor resistor under intake air filter. Disconnect fan motor resistor 5-pin connector. See Fig 1 . Connect a test light between battery voltage and harness side connector terminal No. 5 (Black wire). If test light comes on, go to next step. If test light does not come on, repair Black wire between fan motor resistor connector and ground connection. When repairs are complete, go to step  14 .
  5. Using a heavy gauge, fused (30-amp) jumper wire, apply battery voltage to fan motor resistor terminal No. 3. Using another heavy gauge jumper wire, ground fan motor resistor terminal No. 5. If fan motor does not operate at full speed, check circuits between fan motor resistor and fan motor. If circuits are okay, replace fan motor. If fan motor operates at full speed, replace fan motor switch. When repairs are complete, go to step  14 .
  6. Turn ignition off. Locate fan motor resistor under intake air filter. Disconnect fan motor resistor 5-pin connector. See Fig 1 . Connect a test light between ground and fan motor resistor harness connector terminal No. 1 (Orange wire). Turn ignition on and fan switch to speed position "1". If test light does not come on, go to next step. If test light comes on, replace fan motor resistor. When repairs are complete, go to step  14 .
  7. Check Orange wire circuit between fan motor resistor and fan motor speed switch. See WIRING DIAGRAMS  . Repair circuit as necessary. If circuit is okay, replace fan motor resistor. When repairs are complete, go to step  14 .
  8. Turn ignition off. Locate fan motor resistor under intake air filter. Disconnect fan motor resistor 5-pin connector. Connect a test light between ground and fan motor resistor harness connector terminal No. 2 (Yellow wire). Turn ignition on and fan switch to speed position "2". If test light does not come on, go to next step. If test light comes on, replace fan motor resistor. When repairs are complete, go to step  14 .
  9. Check Yellow wire circuit between fan motor and fan motor switch. See WIRING DIAGRAMS  . Repair circuit as necessary. If circuit is okay, replace fan motor resistor. When repairs are complete, go to step  14 .
  10. Turn ignition off. Locate fan motor resistor under intake air filter. Disconnect fan motor resistor 5-pin connector. See Fig 1 . Connect a test light between ground and fan motor resistor harness connector terminal No. 4 (Green wire). Turn ignition on and fan switch to speed position "3". If test light does not come on, go to next step. If test light comes on, replace fan motor resistor. When repairs are complete, go to step  14 .
  11. Check Green wire circuit between fan motor resistor and fan motor switch. See WIRING DIAGRAMS  . Repair circuit as necessary. If circuit is okay, replace fan motor resistor. When repairs are complete, go to step  14 .
  12. Turn ignition off. Locate fan motor resistor under intake air filter. Disconnect fan motor resistor 5-pin connector. Connect a test light between ground and fan motor resistor harness connector terminal No. 3 (White wire). Turn ignition on and fan switch to speed position "4". If test light does not come on, go to next step. If test light comes on, replace fan motor resistor. When repairs are complete, go to step  14 .
  13. Check White wire circuit between fan motor resistor and fan switch. See WIRING DIAGRAMS  . Repair circuit as necessary. If circuit is okay, replace fan motor resistor. When repairs are complete, go to next step.
  14. Using scan tool clear DTCs from all systems. Check A/C system operation. If A/C system operates properly, inspection is complete. If A/C system does not operate properly, go to CONTROL MODULES  under COMPONENT TESTS.
Fig 1: Identifying Fan Motor Resistor & Connector Terminals
G99J03456Courtesy of SAAB-SCANIA OF AMERICA, INC.
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