Diagnosis Procedure

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

1. CHECK OUTSIDE 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
      M20	101, 102	Ground	When the driver door request switch is operated with ignition switch OFF	When Intelligent Key is in the antenna detection area (The distance between Intelligent Key and antenna: 80 cm or less)
      				When Intelligent Key is not in the antenna detection area (The distance between Intelligent Key and antenna: Approx. 2 m)

      Is the inspection result normal? 

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

      NO: GO TO 2.

2. CHECK OUTSIDE KEY ANTENNA CIRCUIT 
   1. Disconnect BCM connector and outside key antenna (rear bumper) connector.
   2. Check continuity between BCM harness connector and outside key antenna (rear bumper) harness connector.

      BCM		Outside key antenna (rear bumper)		Continuity
      Connector	Terminal	Connector	Terminal
      M20	102	B403	1	Yes
      	101		2

   3. Check continuity between BCM harness connector and ground.

      BCM		Ground	Continuity
      Connector	Terminal
      M20	102		No
      	101

      Is the inspection result normal? 

      YES: GO TO 3.

      NO: Repair or replace harness.

3. CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 2 
   1. Replace outside key antenna (rear bumper). (New antenna or other antenna)
   2. Connect BCM and outside key antenna (rear bumper) connector.
   3. Check signal between BCM harness connector and ground using oscilloscope.

      (+)		(-)	Condition		Signal (Reference value)
      BCM
      Connector	Terminal
      M20	101, 102	Ground	When the driver door request switch is operated with ignition switch OFF	When Intelligent Key is in the antenna detection area (The distance between Intelligent Key and antenna: 80 cm or less)
      				When Intelligent Key is not in the antenna detection area (The distance between Intelligent Key and antenna: Approx. 2 m)

      Is the inspection result normal? 

      YES: Replace outside key antenna (rear bumper). Refer to "REAR BUMPER: REMOVAL AND INSTALLATION ".

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