Check Remote Keyless Entry Receiver

1. Turn ignition switch OFF.
2. Check remote keyless entry receiver connector M98 terminal 2 (L) and ground signal with oscilloscope.
   Fig 1: Identifying Signal Between Remote Keyless Entry Receiver Connector M78 Terminal 2 And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.NISSAN MOTOR CO., U.S.A.NISSAN MOTOR CO., U.S.A.
   REMOTE KEYLESS ENTRY RECEIVER OUTPUT SIGNAL
   
   

   Connector	Terminal (Wire color)		Condition of keyfob	Voltage (Reference value)
   	(+)	(-)
   M98	2	Ground	No function	Courtesy of NISSAN MOTOR CO., U.S.A.
   			Any button is pressed	Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: Remote keyless entry receiver circuit is OK.

NG: GO TO 2.

1. Disconnect remote keyless entry receiver connector.
2. Check voltage between remote keyless entry receiver connector M98 terminal 4 (R) and ground.

   4 (Y) - Ground : Approx. 4.5V 

Fig 2: Identifying Voltage Between Remote Keyless Entry Receiver Connector M78 Terminal 4 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: GO TO  4.

NG: GO TO 3.

1. Disconnect BCM connector.
2. Check continuity between remote keyless entry receiver connector M78 terminal 4 (R) and BCM connector M1 terminal 19 (R).

   4 (R) - 19 (R) : Continuity should exist. 

3. Check continuity between remote keyless entry receiver connector M78 terminal 4 (R) and ground.

   4 (R) - Ground : Continuity should not exist. 

   Fig 3: Checking Remote Keyless Entry Receiver Power Supply Circuit

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: Check harness connection.

• If it is OK, replace BCM.
• If it is NG, repair or replace malfunction part.

NG: Repair or replace the harness.

1. Check continuity between remote keyless entry receiver connector M78 terminal 1 (B) and ground.

   1 (B) - Ground : Continuity should exist. 

   Fig 4: Identifying Continuity Between Remote Keyless Entry Receiver Connector M78 Terminal 1 (B) And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: GO TO  6.

NG: GO TO 5.

1. Check continuity between remote keyless entry receiver connector M78 terminal 1 (B) and BCM connector M1 terminal 18 (B)

   1 (B) - 18 (B) : Continuity should exist. 

   Fig 5: Identifying Continuity Between Remote Keyless Entry Receiver Connector M78 Terminal 1 And BCM Connector M1 Terminal 18

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: Check harness connection.

• If it is OK, replace BCM.
• If it is NG, repair or replace malfunction part.

NG: Repair or replace the harness.

1. Check continuity between remote keyless entry receiver connector M78 terminal 2 (Y) and BCM connector M1 terminal 20 (Y).

   2 (Y) - 20 (Y) : Continuity should exist. 

2. Check continuity between remote keyless entry receiver connector M78 terminal 2 (Y) and ground.

   2 (Y) - Ground : Continuity should not exist. 

   Fig 6: Checking Remote Keyless Entry Receiver Signal Circuit

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: Check harness connection.

• If it is OK, replace remote keyless entry receiver.
• If it is NG, repair or replace malfunction part.

NG: Repair or replace harness.