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Home >> Ford >> 2002 >> Taurus SES, 3.0 S >> Repair and Diagnosis >> External Pages >> Different car >> Section 477 (Horn System) >> Diagnosis And Testing >> Horn >> Symptom Chart

Symptom Chart

WARNING: This page is about a different car, the 2003 Mercury Sable and 2003 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer to SYSTEM WIRING DIAGRAMS (Sable) or SYSTEM WIRING DIAGRAMS (Taurus) for connector numbers stated in the pinpoint test.
SYMPTOM CHART

Condition Possible Sources Action
The horn does not sound
  • Battery junction box (BJB) fuse 101 (60A).
  • Central junction box (CJB) fuse 30 (15A).
  • Circuitry.
  • Horn relay.
  • Horn switch.
  • Horn.
  • Speed control servo or jumper.
  • Generic electronic module (GEM).
 Go To PINPOINT TEST A .
The horn sounds continuously
  • Horn relay.
  • Circuitry.
  • Horn switch.
  • GEM.
 Go To PINPOINT TEST B .
No communication with the GEM
  • Fuse(s).
  • Circuitry.
  • GEM.
 REFER to MULTIFUNCTION ELECTRONIC MODULE .
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