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Home >> Saab >> 2011 >> 9-5 Turbo6 >> Repair and Diagnosis >> Electrical >> Horns >> Lighting And Signaling Systems >> Fault diagnosis, symptoms >> Horns Malfunction >> Circuit/System Testing >> Horn Switch Malfunction

Horn Switch Malfunction

  1. Ignition OFF, disconnect the harness connector at the S33 Horn Switch.
  2. Test for less than 30 Ω between the ground circuit terminal A and ground.
  3. If greater than the specified range, test the ground circuit for an open/high resistance.
  4. Ignition ON, test for greater than 10 V between the signal circuit terminal B and ground.
  5. If less than the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 Body Control Module.
  6. If all circuits test normal, test or replace the S33 Horn Switch.
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