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Home >> Ford >> 2005 >> Focus ZX5 S, Automatic >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Exterior Lighting System >> Diagnosis And Testing >> Reversing Lamps >> Symptom Chart

Symptom Chart

SYMPTOM CHART

Condition Possible Sources Action
  • The reversing lamps are inoperative
  • Circuitry
  • Reversing lamp switch (manual transmission)
  • Digital transmission range (TR) sensor (automatic transmission)
  • Central junction box (CJB)
  • The individual reversing lamp is inoperative
  • Circuitry
  • MEASURE the resistance between the LH reversing lamp C451, circuit 31-LG9 (BK), harness side and ground; or between the RH reversing lamp C461, circuit 31-LG16 (BK), harness side and ground.
    • If the resistance is less than 5 ohms, REPAIR circuit 15S-LG9A (GN/BK) (LH reversing lamp) or circuit 15S-LG16 (GN/OG) (RH reversing lamp). TEST the system for normal operation.
    • If the resistance is not less than 5 ohms, REPAIR the reversing lamp ground circuit. TEST the system for normal operation.
  • The reversing lamps are on continuously
  • Circuitry
  • Reversing lamp switch (manual transmission)
  • Digital TR sensor (automatic transmission)
  • CJB
  • Powertrain control module (PCM)