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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Horns >> Diagnostic Information and Procedures >> Horns Malfunction >> Component Testing

Component Testing

Horn Test

  1. Ignition OFF, disconnect the harness connector at the appropriate horn.
  2. Install a 15A fused jumper wire between the control terminal B and 12 volts. Install a jumper wire between the ground terminal A and ground. Verify the horn emits a clear and even tone.
    • If the sound emitted is not clear and even, replace the horn.