Horns Inoperative

TEST DESCRIPTION

Steps 1-11:

Steps 12-19:

The number(s) below refer to the step number(s) on the diagnostic table.
5. Tests for voltage at the battery positive voltage terminal of the horn relay coil.
7. Tests for voltage at the battery positive voltage terminal of the horn relay switch. The HORN fuse supplies power to the battery positive voltage terminal of the horn relay switch.
12. The horns need maximum current flow to operate properly. A high resistance (greater than 0.5 Ohm) in the horn control circuit or the horn ground circuit could cause operating problems with the horns. Inspect the circuits for faults that would restrict current flow.
14. The horn relay control circuit includes horn slip ring and the horn switch. The horn switch is pan of the inflatable restraint steering wheel module. The horn slip ring and the horn switch must be tested for a high resistance an open or a short to voltage when testing the relay control circuit. Refer to Circuit Testing and Wiring Repairs in Diagrams and Inflatable Restraint Steering Wheel Module Replacement in Restraint Systems.

"For a description of the RPO Code(s) shown in this article or any of the images therein, refer to the RPO Code List found at Vehicle/Application ID". RPO Codes