Inside Key Antenna Check

1. Turn ignition switch OFF.
2. Check signal between Intelligent Key unit connector and ground with an oscilloscope.
   CONNECTOR TERMINAL SIGNAL SPECIFICATION
   
   

   Connector	Item	Terminals		Condition	Signal (V) (Reference value)
   		(+)	(-)
   M42	Rear parcel shelf antenna	33	Ground	Any door is open → All doors are closed
   	Front console antenna	15	Ground	Ignition switch is pushed.
   	Instrument panel antenna	13

OK or NG 

OK: Inside key antenna is OK.

NG: GO TO 2.

Fig 1: Checking Signal Between Intelligent Key Unit Connector And Ground

1. Disconnect Intelligent Key unit connector and inside key antenna connectors.
2. Check continuity between inside key antenna harness connector M25 (B) (instrument panel), B18 (B) (front console), B45 (B) (rear parcel shelf) terminals 1, 2 and Intelligent Key unit harness connector M42 (A) terminals 13, 14, 15, 16, 33 and 34.
   CONNECTOR TERMINAL CONTINUITY SPECIFICATION
   
   

   Item	Connector	Terminal	Connector	Terminal	Continuity
   Instrument panel antenna	B: M25	2	A: M42	13	Yes
   		1		14
   Front console antenna	B: B18	1		15
   		2		16
   Rear parcel shelf antenna	B: B45	1		33
   		2		34

3. Check continuity between Intelligent Key unit harness connector M42 (A) terminals 13, 14, 15, 16, 33, 34 and ground.
   CONNECTOR TERMINAL CONTINUITY SPECIFICATION
   
   

   Item	Connector	Terminals		Continuity
   Intelligent Key unit	A: M42	13	Ground	No
   		14
   		15
   		16
   		33
   		34

OK or NG 

OK: GO TO 3.

NG: Repair or replace harness between inside key antenna and Intelligent Key unit.

Fig 2: Checking Continuity Between Intelligent Key Unit Harness Connector M42 Terminals 13 And Ground

1. Replace inside key antenna. (New antenna or other antenna)
2. Connect Intelligent Key unit connector.
3. Check signal between Intelligent Key unit connector and ground with oscilloscope.
   CONNECTOR TERMINAL SIGNAL SPECIFICATION
   
   

   Connector	Item	Terminals		Condition	Signal (V) (Reference value)
   		(+)	(-)
   M42	Rear parcel shelf antenna	33	Ground	Any door is open → All doors are closed
   	Front console antenna	15	Ground	Ignition switch is pushed.
   	Instrument panel antenna	13

   Fig 3: Checking Signal Between Intelligent Key Unit Connector And Ground

   

OK or NG 

OK: Replace inside key antenna.

NG: Replace Intelligent Key unit. Refer to "REMOVAL AND INSTALLATION OF INTELLIGENT KEY UNIT ".