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HORN FUNCTION DLK-91 < COMPONENT DIAGNOSIS > [WITH INTELLIGENT KEY SYSTEM] C D E F G H I J L M A B DLK N O P HORN FUNCTION Description INFOID:0000000003794906 Perform answer-back for each operation with horn. Component Function Check INFOID:0000000003794907 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 >> Horn function is OK. NO >> Go to . Diagnosis Procedure INFOID:0000000003794908 1. CHECK HORN FUNCTION Check horn function with horn switch Do the horns sound? YES >> GO TO 2. NO >> Go to HRN-2, "Wiring Diagram - HORN -" 2. CHECK HORN RELAY POWER SUPPLY 1. Turn ignition switch ON. 2. Perform “ACTIVE TEST” (“HORN”) with CONSULT-Ill. 3. Check voltage between horn relayconnector and ground. Is the inspection result normal? YES >> GO TO 4. NO >> GO TO 3. 3. CHECK HORN RELAY CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect IPDM E/R connector and horn relay. 3. Check continuity between IPDM E/R harness connector and horn relay connector. 4. Check continuity between driver seat control unit harness connector and ground. Is the inspection result normal? Test item Description HORN ON Horn relay ON (for 20 ms) Horn relay Ground Test item Voltage (V) (Approx.) Connector Terminal E5 1 HORN ON Battery voltage → 0 →
Battery voltage Other than above Battery voltage IPDM E/R Horn relay Continuity Connector Terminal Connector Terminal E11 44 E5 1 Existed IPDM E/R Ground Continuity Connector Terminal E11 44 Not existed |