Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

1. CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1 
   1. Turn ignition switch OFF.
   2. Check signal between BCM harness connector and ground using oscilloscope.

      (+)		(-)	Condition	Signal (Reference value)
      BCM
      Connector	Terminal
      M80	123, 124	Ground	When Intelligent Key is in the antenna detection area
      			When Intelligent Key is not in the antenna detection area

      Is the inspection result normal? 

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

      NO: GO TO 2.

2. CHECK INSIDE KEY ANTENNA CIRCUIT 
   1. Disconnect BCM connector and inside key antenna (instrument center) connector.
   2. Check continuity between BCM harness connector and inside key antenna (instrument center) harness connector.

      BCM		Inside key antenna (instrument center)		Continuity
      Connector	Terminal	Connector	Terminal
      M80	123	M14	1	Yes
      	124		2

   3. Check continuity between BCM harness connector and ground.

      BCM		Ground	Continuity
      Connector	Terminal
      M80	123		No
      	124

      Is the inspection result normal? 

      YES: GO TO 3.

      NO: Repair or replace harness.

3. CHECK INSIDE KEY ANTENNA INPUT SIGNAL 2 
   1. Replace inside key antenna (instrument center). (New antenna or other antenna)
   2. Connect BCM connector and inside key antenna (instrument center) connector.
   3. Check signal between BCM harness connector and ground using oscilloscope.

      (+)		(-)	Condition	Signal (Reference value)
      BCM
      Connector	Terminal
      M80	123, 124	Ground	When Intelligent Key is in the antenna detection area
      			When Intelligent Key is not in the antenna detection area

      Is the inspection result normal? 

      YES: Replace inside key antenna (instrument center).

      NO: Replace BCM. Refer to "REMOVAL AND INSTALLATION ".