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SEC-510 < COMPONENT DIAGNOSIS > [SEDAN WITHOUT INTELLIGENT KEY] HORN HORN Description INFOID:0000000004499210 Horn (high/low) is located inside of front bumper and operates when theft warning system is in alarm phase. Component Function Check INFOID:0000000004499211 1. CHECK FUNCTION 1. Select HORN in “ACTIVE TEST” mode with CONSULT-III. 2. Check the horn (high/low) operation. Is the operation normal? YES >> Inspection End. NO >> Refer to SEC-510, "Diagnosis Procedure" . Diagnosis Procedure INFOID:0000000004499212 1. CHECK HORN FUNCTION Check horn function with horn switch YES >> GO TO 2 NO >> Refer to HRN-7, "Wiring Diagram - Sedan" 2. CHECK HORN RELAY POWER SUPPLY 1. Turn ignition switch ON. 2. Perform “ACTIVE TEST” (“HORN”) with CONSULT-Ill. 3. Using an analog voltmeter or an oscilloscope, check voltage between IPDM E/R connector E17 terminal 44 and ground. Is the inspection result normal? YES >> Repair or replace harness between IPDM E/R and horn relay. NO >> GO TO 3 3. CHECK HORN RELAY CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect IPDM E/R and horn relay connector. Test item Description HORN ON Horn relay ON (for 20 ms) ALKIA0424ZZ IPDM E/R Ground Test item Voltage (V) (Approx.) Connector Terminal E17 44 Ground HORN ON Battery voltage → 0 → Battery voltage Other than above Battery voltage |