| Component Location |

| 1. Horn switch 2. Horn relay (Engine room compartment) 3. Horn (Low pitch) |
4. Horn (High pitch) 5. Clock spring |
Removal 1. Remove the front bumper cover. (Refer to Body - "Front Bumper Cover") 2. Remove the bolts and disconnect the horn connectors (C), then remove the high pitch horn (B) and low pitch horn (A).
Description and operation Description The A/C Pressure Transducer (APT) converts the pressure value of high pressure line into voltage value after measuring it. By converted voltage value, engine ECU controls the cooling fan by operating it high speed or low speed.