1.CHECK HORN FUNCTION
Check horn function with horn switch
Do the horns sound?
YES >> GO TO 2
NO >> Refer to See: Diagrams\Electrical\Coupe. 2.CHECK HORN RELAY POWER SUPPLY
Turn ignition switch ON.
Perform "ACTIVE TEST" ("HORN") with CONSULT-Ill.
Using an oscilloscope or analog voltmeter, check voltage between IPDM E/R harness connector and ground.
Is the Inspection result normal?
YES >> Repair or replace open harness between IPDM E/R and horn relay.
NO >> GO TO 3 3.CHECK HORN RELAY CIRCUIT