Check Remote Keyless Entry Receiver

WARNING: This page is about a different car, the 2003 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

CHECK REMOTE KEYLESS ENTRY RECEIVER POWER SUPPLY CIRCUIT
1. Remove electronic key from ignition key cylinder.
2. Disconnect remote keyless entry receiver connector.
3. Check the voltage between remote keyless entry receiver connector B26 terminal 4 (L) and ground.
  
  Fig 1: Identifying R B26 Terminal 4 (L) And Ground Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: Checking The Voltage Between Remote Keyless Entry Receiver Connector And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK >> GO TO 2.

NG >> GO TO 5 .
CHECK REMOTE KEYLESS ENTRY RECEIVER OUTPUT SIGNAL
1. Connect remote keyless entry receiver connector.
2. Check the voltage between remote keyless entry receiver connector B26 terminal 2 (BR/W) and ground.
  
  Fig 3: Identifying Remote Keyless Entry Receiver Output Signal Table
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 4: Checking Remote Keyless Entry Receiver Output Signal
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK >> GO TO 3.

NG >> GO TO 4 .
CHECK REMOTE KEYLESS ENTRY RECEIVER HARNESS
1. Disconnect BCM and remote keyless entry receiver connector.
2. Check continuity between BCM connector M4 terminal 44 (Y) and remote keyless entry receiver connector B26 terminal 1 (Y).
  1. 44 (Y) - 1 (Y) : Continuity should exist.
3. Check continuity between BCM connector M4 terminal 44 (Y) and ground.
  1. 44 (Y) - Ground : Continuity should not exist.
OK or NG

OK >> Remote keyless entry receiver circuit is OK.

NG >> Repair or replace harness.
CHECK REMOTE KEYLESS ENTRY RECEIVER HARNESS
1. Disconnect BCM and remote keyless entry receiver connector.
2. Check continuity between BCM connector M4 terminal 27 (BR/W) and remote keyless entry receiver connector B26 terminal 2 (BR/W).
  1. 27 (BR/W) - 2 (BR/W) : Continuity should exist.
  Fig 6: Checking Remote Keyless Entry Receiver Output Signal
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check continuity between BCM connector M4 terminal 27 (BR/W) and ground.
  1. 27 (BR/W) - Ground : Continuity should not exist.
OK or NG

OK >> Replace remote keyless entry receiver.

NG >> Repair or replace harness.
CHECK REMOTE KEYLESS ENTRY RECEIVER HARNESS
1. Disconnect BCM and remote keyless entry receiver connector.
2. Check continuity between BCM connector M4 terminal 28 (L) and remote keyless entry receiver connector B26 terminal 4 (L).
  1. 28 (L) - 4 (L) : Continuity should exist.
3. Check continuity between BCM connector M4 terminal 28 (L) and ground.
  1. 28 (L) - Ground : Continuity should not exist.
OK or NG

OK >> Replace BCM.

NG >> Repair or replace harness.