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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different car >> Section 1449 (Body, Lock & Security System) >> Remote Keyless Entry System >> Remote Keyless Entry Receiver Check
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Remote Keyless Entry Receiver Check

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK MULTI-REMOTE CONTROL RECEIVER INPUT VOLTAGE 
    1. Remove key from ignition key cylinder.
    2. Check signal between remote keyless entry receiver connector and ground with oscilloscope.
    Fig 1: Remote Keyless Entry Receiver Connector Terminal 4 & Ground Signal Specifications Table
    G02402409Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 2: Remote Keyless Entry Receiver Connector Terminal 4 & Ground Signal Test
    G02402410Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK : GO TO  3.
    • NG : GO TO 2.
  2. CHECK REMOTE KEYLESS ENTRY RECEIVER HARNESS 
    1. Turn ignition switch OFF.
    2. Disconnect remote keyless entry receiver and BCM connector.
    3. Check continuity between remote keyless entry receiver connector M78 terminal 4 and BCM connector M90 terminal 19.
      • 4 (Y) - 19 (Y) : Continuity should exist. 
    4. Check continuity between remote keyless entry receiver connector M78 terminal 4 and ground.
      • 4 (Y) - Ground : Continuity should not exist. 

    OK or NG 

    • OK : Check harness connection.
    • NG : Repair or replace the harness.
    Fig 3: Remote Keyless Entry Receiver Connector Terminal 4, BCM Connector Terminal 19 & Ground Continuity Test
    G02402411Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK REMOTE KEYLESS ENTRY RECEIVER 
    1. Turn ignition switch OFF.
    2. Check continuity between remote keyless entry receiver connector M78 terminal 1 and BCM connector M90 terminal 18.
      • 1 (B) - 18 (B) : Continuity should exist. 
    3. Check continuity between remote keyless entry receiver connector M78 terminal 1 and ground.
      • 1 (B) - Ground : Continuity should not exist. 

    OK or NG 

    • OK : GO TO 4.
    • NG : Repair or replace the harness.
    Fig 4: Remote Keyless Entry Receiver Connector M78 Terminal 1, BCM Connector M90 Terminal 18 & Ground Continuity Test
    G02402412Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK REMOTE KEYLESS ENTRY RECEIVER OUTPUT SIGNAL 
    1. Connect remote keyless entry receiver connector.
    2. Check signal BCM connector and ground with oscilloscope.
    Fig 5: BCM Connector Terminal 20 & Ground Signal Specifications Table
    G02402413Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 6: BCM Connector Terminal 20 & Ground Signal Test
    G02402414Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    • OK : Replace BCM.
    • NG : GO TO 5.
  5. CHECK REMOTE KEYLESS ENTRY RECEIVER HARNESS 
    1. Disconnect remote keyless receiver and BCM connector.
    2. Check continuity between remote keyless entry receiver connector M78 terminal 2 and BCM connector M90 terminal 20.
      • 2 (L) - 20 (L) : Continuity should exist. 
    3. Check continuity between remote keyless entry receiver connector M78 terminal 2 and ground.
      • 2 (L) - Ground : Continuity should not exist. 

    OK or NG 

    • OK : Replace remote keyless entry receiver.
    • NG : Repair or replace the harness.
    Fig 7: Remote Keyless Entry Receiver Connector M78 Terminal 2, BCM Connector M90 Terminal 20 & Ground Continuity Test
    G02402415Courtesy of NISSAN MOTOR CO., U.S.A.
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