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Home >> Land Rover >> 2012 >> LR4 HSE Lux >> Repair and Diagnosis >> Accessories & Equipment >> Horns >> Horn >> Diagnosis And Testing >> Horn >> Symptom Chart

Symptom Chart

Symptom Possible Causes Action
Horn/s operate with a muffled tone
  • Low battery voltage
  • Horn circuit short circuit to ground, short circuit to power, open circuit, high resistance
  • Refer to the relevant section of the workshop manual and test the battery
  • Refer to the electrical circuit diagrams and test the horn circuit for short circuit to ground, short circuit to power, open circuit, high resistance
  • Using the manufacturer approved diagnostic system, check the Central Junction Box (CJB) for related DTCs and refer to the relevant DTC index
Horn/s inoperative