Horn: Testing and Inspection

HORN FUNCTION

Description

Perform answer-back for each operation with horn.


Component Function Check


1. CHECK FUNCTION

1.Select "HORN" in "ACTIVE TEST" mode with 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 with 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") with CONSULT-Ill.
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