Horn Function: DIAGNOSISPROCEDURE

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

1. 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.

      (+)		(-)	Voltage (Approx.)
      Vehicle security horn relay
      Connector	Terminal
      E5	2	Ground	Battery voltage

   Is the inspection result normal?

   YES 

   GO TO STEP 2  .

   NO 

   Repair or replace harness.

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

      IPDM E/R		Vehicle security horn relay		Continuity
      Connector	Terminal	Connector	Terminal
      E13	34	E5	1	Yes

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

      IPDM E/R		Ground	Continuity
      Connector	Terminal
      E13	34		No

   Is the inspection result normal?

   YES 

   Replace IPDM E/R. Refer to REMOVAL AND INSTALLATION .

   NO 

   Repair or replace harness.