Horn: Testing and Inspection

HORN FUNCTION

Description

Performs answer-back for each operation with horn.


Component Function Check


1. CHECK FUNCTION

1.Use CONSULT to perform Active Test ("HORN").
2.Touch "ON" to check that it works normally.
Is the operation normal?
YES- Horn function is OK.
NO- Refer to "Diagnosis Procedure" .


Diagnosis Procedure


1. CHECK HORN SWITCH

Check horn function with horn switch
Do the horns sound?
YES- GO TO 2.
NO- Refer to "Wiring Diagram HORN -" [1][2]Electrical Diagrams.

2. CHECK HORN RELAY POWER SUPPLY

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





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





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

4. CHECK INTERMITTENT INCIDENT

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