Horn Switch: Testing and Inspection
Horn Switch Test1. Remove the dashboard lower cover.
2. Remove the steering column covers.
3. Disconnect the dashboard wire harness B 5P connector (A) from the cable reel (B).
4. Connect terminal No. 3 (C) of the dashboard wire harness B 5P connector to ground. The horn should sound.
- If the horn does not sound, inspect the horn relay circuit.
- If the horn sounds, go to step 5.
5. Check for continuity between the cable reel No. 2 terminal and body ground with the horn switch pressed.
- If there is continuity, the switch is OK.
- If there is no continuity, go to step 6.
6. Remove the driver's airbag assembly.
7. Check for continuity between the cable reel No. 3 terminal (A) and the horn switch positive terminal (B).
- If there is no continuity, check for continuity of the radio remote switch harness. If the harness is OK, replace the cable reel and check for proper operation.
- If there is continuity, go to step 8.
8. Check for continuity between the center of the steering column and ground.
- If there is continuity, replace the airbag.
- If there is no continuity, replace the steering column.