Diagnosis Procedure

HORN


Description

Horn (high/low) is located inside of front bumper and operates when theft warning system is in alarm phase.




HORN


Diagnosis Procedure

1.CHECK HORN FUNCTION
Check horn function with horn switch
Do the horns sound?
YES - GO TO 2
NO - Refer to [1][2]Electrical Diagrams.
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 - GO TO 4
NO - GO TO 3
3.CHECK HORN RELAY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and horn relay connector.





3. Check continuity between IPDM E/R harness connector and horn relay harness connector.





4. Check continuity between IPDM E/R harness connector and ground.





Is the inspection result normal?
YES - GO TO 4
NO - Repair or replace harness.
4.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
Is the inspection result normal?
YES - Replace IPDM E/R.Refer to Service and Repair.
NO - Repair or replace the malfunctioning part.