Sedan With Intelligent Key

HORN


Diagnosis Procedure

1.CHECK HORN FUNCTION
Check horn function with horn switch
Do the horns sound?
YES >> GO TO 2
NO >> Refer to 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.





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.