Horn Function Check

INTELLIGENT KEY SYSTEM


Horn Function Check

First perform the "SELF-DIAG RESULTS" of "BCM" with CONSULT-III, then perform the trouble diagnosis of malfunction system indicated in "SELF-DIAG RESULTS" of "BCM". Refer to CAN Communication Inspection Using CONSULT-III (Self-Diagnosis),
1.CHECK HORN OPERATION
Check if horn sounds with horn switch.
Does horn operate?
Yes >> GO TO 2
No >> Check horn circuit. Refer to Electrical Diagrams Service and Repair.
2.CHECK IPDM E/R INPUT SIGNAL
Check voltage between IPDM E/R connector and ground.










OK or NG
OK >> Replace IPDM E/R. Refer to Service and Repair.
NG >> GO TO 3
3.CHECK HORN RERAY 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.





OK or NG
OK >> Check condition of harness and connector.
NG >> Repair or replace harness.