文档介绍：HORN – HORN SYSTEM HO–1 HO HORN SYSTEM PARTS LOCATION HIGH PITCHED HORN LOW PITCHED HORN ENGINE ROOM R/B ENGINE ROOM J/B - HORN FUSE MAIN BODY ECU INSTRUMENT PANEL J/B STEERING PAD (STEERING PAD SWITCH) - HORN RELAY HO–2 HORN – HORN SYSTEM HO SYSTEM DIAGRAM FL MAIN HORN HORN HORN Instrument Panel J/B Main Body ECU 11 25 ID E18 a1 HO II 5 8 L 1 11 Horn Switch Spiral Cable Steering Pad Switch A4 Horn (Low) A3 Horn (High) HORN – HORN SYSTEM HO–3 HO PROBLEM SYMPTOMS TABLE HORN SYSTEM Symptom Suspected area See page Horn does not sound 1. HORN fuse HO-3 2. Horn relay HO-3 3. Steering pad switch RS-347 4. Spiral cable RS-364 5. Wire harness - Horn blows all the time 1. Horn relay HO-3 2. Steering pad switch RS-347 3. Wire harness - Low pitched horn operates but high pitched horn does not operate 1. High pitched horn HO-7 2. Wire harness - High pitched horn operates but low pitched horn does not operate 1. Low pitched horn HO-5 2. Wire harness - HORN – HORN RELAY HO–3 HO HORN RELAY INSPECTION 1. INSPECT FUSE (HORN) (a) Check the resistance of the HORN fuse. Standard: Below 1 ? 2. INSPECT HORN RELAY (a) Remove the engine room R/B and J/B (horn relay). (b) Measure the resistance according to the value(s) in the table below. Standard resistance 1G 1B 1D Tester Connection Condition Specified Condition 1G-1 - 1B-6 Always 10 k ? or higher 1G-1 - 1B-6 W