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Home >> Saab >> 2011 >> 9-5 Turbo6 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Lighting And Signaling Systems >> Fault diagnosis, symptoms >> Front Fog Lamps Malfunction >> Circuit/System Testing >> Front Fog Lamp Switch Malfunction

Front Fog Lamp Switch Malfunction

  1. Ignition OFF, disconnect the harness connectors X1 and X3 at the K9 Body Control Module.
  2. Ignition ON, test for less than 0.3 V between the 12 V reference circuit terminal 4 X3 and ground.
  3. If greater than the specified value, test the 12 V Reference circuit for an short to voltage.
  4. Test for less than 0.3 V between the signal circuit terminal 9 X1 and ground.
  5. If greater then the specified value, test the signal circuit for a short to voltage.
  6. Ignition OFF, test for infinite resistance between the signal circuit terminal 9 X1 and ground.
  7. If less than the specified value, test the signal circuit for a short to ground.
  8. Test for infinite resistance between the 12 V reference circuit terminal 4 X3 and ground.
  9. If less than the specified value, test the 12 V reference circuit for an short to ground.
  10. Press and hold the front fog lamp switch button.
  11. Test for 2.7-3.1 kΩ between the signal circuit terminal 9 X1 and the 12 V reference circuit terminal 4 X3.
  12. If not within the specified range, test the 12 V reference circuit and the signal circuit for an open/high resistance. If the circuit test normal, replace the S30 Headlamp Switch.
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