Contents: Examination ↓ Replacement ↓
Warning! The models described in this manual are equipped with a Supplemental Restraint System (SPS), commonly known as the "air bag system". To prevent accidental deployment of the air bags, which could result in injury, be sure to deactivate the air bag system before working near the air bag components (see paragraph 25).
Examination
Application: Before diagnosing electrical circuits, check the fuses.
1. Disconnect the horn electrical connector.
2. To test the horn, use a jumper cable to apply battery voltage to the horn terminal. If the horn does not sound, replace it.
3. If the horn works, check for voltage at the terminal with the horn button pressed. If voltage is present at the terminal, check the horn ground circuit.
4. If there is no voltage supplied to the horn, check the relay (see paragraph 5).
5. If the relay is OK, check for voltage in its electrical circuits - the power circuit and the control circuit. If any of the circuits do not receive voltage, inspect the wiring between the relay and the flat fuse panel.
6. If both relay circuits are receiving voltage, press the horn button and check the electrical circuit from the relay to the horn button for continuity to ground. If there is no continuity, check the electrical circuit for an open. If no open is found, replace the horn button.
7. If the integrity of the electrical circuit does not "mess" through the horn button, check for a break or short circuit in the electrical circuit going from the relay to the horn.
Replacement
Note: There are two horns. One is located in front of the A/C condenser and the other is located in front of the engine compartment fuse/relay box below it.
8. Disconnect the electrical connector (fig. 18.8, a, b).
Fig. 18.8, a. To light the horn located in front of the fuse and relay box below it, disconnect the electrical connector and unscrew the support bracket bolt
Fig. 18.8, b. To remove the sound signal, which is located in front of the air conditioner condenser, disconnect the electrical connector and unscrew the support bracket bolt
9. Remove the bolt from the bracket.
10. Installation is performed in the reverse order of removal.