Horn Function

HORN FUNCTION

Component Function Check


1. CHECK FUNCTION 1

1.Disconnect vehicle security horn relay.
2.Perform "VEHICLE SECURITY HORN" in "ACTIVE TEST" mode of "THEFT ALM" of "BCM" using CONSULT.
3.Check the horn operation.





Is the operation normal?
YES- GO TO 2.
NO- Go to .

2. CHECK FUNCTION 2

1.Reconnect vehicle security horn relay.
2.Disconnect horn relay.
3.Perform "VEHICLE SECURITY HORN" in "ACTIVE TEST" mode of "THEFT ALM" of "BCM" using CONSULT.
4.Check the horn operation.





Is the operation normal?
YES- INSPECTION END
NO- Go to .


Diagnosis Procedure


1. INSPECTION START

Perform inspection in accordance with procedure that confirms malfunction.
Which procedure confirms malfunction?
Component Function Check 1-GO TO 2.
Component Function Check 2-GO TO 4.

2. CHECK HORN FUNCTION

Check horn function using horn switch.
Do the horn sound?
YES- GO TO 3.
NO- Check horn circuit. [1][2]Electrical Diagrams.

3. CHECK HORN CONTROL CIRCUIT 1

1.Disconnect horn relay.
2.Disconnect IPDM E/R 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- Replace IPDM E/R. Removal And Installation.
NO- Repair or replace harness.

4. CHECK VEHICLE SECURITY HORN RELAY POWER SUPPLY

1.Disconnect vehicle security horn relay.
2.Check voltage between vehicle security horn relay harness connector and ground.





Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace harness.

5. CHECK HORN CONTROL CIRCUIT 2

1.Disconnect IPDM E/R connector.
2.Check continuity between IPDM E/R harness connector and vehicle security horn relay harness connector.





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





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