Diagnosis Procedure

1. Turn ignition switch OFF.
2. Check 10 A fuse, [No. 6, located in fuse block (J/B)].

   Is the inspection result normal? 

   YES: GO TO 2.

   NO: Replace the blown fuse after repairing the affected circuit if a fuse is blown.

1. Disconnect Intelligent Key warning buzzer connector.
2. Check voltage between Intelligent Key warning buzzer harness connector and ground.
   TERMINALS VOLTAGE REFERENCE CHART
   
   

   (+)		(-)	Voltage (V) (Approx.)
   Intelligent Key warning buzzer
   Connector	Terminal
   E57	1	Ground	Battery voltage

   Is the inspection result normal? 

   YES: GO TO 3.

   NO: Repair or replace harness.

1. Disconnect BCM connector.
2. Check continuity between BCM harness connector and Intelligent Key warning buzzer harness connector.
   TERMINALS CONTINUITY REFERENCE CHART
   
   

   BCM		Intelligent Key warning buzzer		Continuity
   Connector	Terminal	Connector	Terminal
   M121	64	E57	3	Existed

3. Check continuity between BCM harness connector and ground.
   TERMINALS CONTINUITY REFERENCE CHART
   
   

   BCM		Ground	Continuity
   Connector	Terminal
   M121	64		Not existed

   Is the inspection result normal? 

   YES: GO TO 4.

   NO: Repair or replace harness.

Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".

NO: Replace Intelligent Key warning buzzer. Refer to "REMOVAL AND INSTALLATION ".