Horn: Testing and Inspection

HORN FUNCTION

Description

Perform answer-back for each operation using horn.


Component Function Check


1. CHECK FUNCTION

1.Select "HORN" in "ACTIVE TEST" mode using CONSULT.
2.Check the horn (high/low) operation.





Is the operation normal?
YES- Horn function is OK.
NO- .


Diagnosis Procedure


1. CHECK HORN SWITCH

Check horn function using horn switch
Do the horns sound?
YES- GO TO 2.
NO- [1][2]Electrical Diagrams.

2. CHECK HORN RELAY POWER SUPPLY

1.Turn ignition switch ON.
2.Perform "ACTIVE TEST" ("HORN") using CONSULT.
3.Check voltage between malfunctioning horn relay harness connector 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 connector.
3.Check continuity between IPDM E/R harness connector and malfunctioning horn relay harness connector.





4.Check continuity between driver seat control unit harness connector and ground.





Is the inspection result normal?
YES- Replace IPDM E/R. Removal And Installation.
NO- Repair or replace harness.

4. CHECK INTERMITTENT INCIDENT

Intermittent Incident.
Is the inspection result normal?
- INSPECTION END