Close Switch System Inspection

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CLOSE SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While fully opening and closing the back door, check voltage between back door control unit connector B55 terminal 14 and ground.
Fig 1: Back Door Control Unit Connector B55 Terminal 14 & Ground Waveform
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Voltage Between Back Door Control Unit Connector B55 Terminal 14 & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: Close switch is OK.
2. NG: GO TO 2.
CLOSE SWITCH CIRCUIT INSPECTION
1. Disconnect back door latch and back door control unit connector.
2. Check continuity between back door latch (close switch) connector D511 terminal 5 and back door control unit connector B55 terminal 14.
  5 (P) - 14 (P): Continuity should exist.
OK or NG
1. OK: GO TO 3.
2. NG: Repair the harness between the back door latch (close switch) and the back door control unit.
Fig 3: Checking Continuity Between Back Door Latch (Close Switch) & Back Door Control Unit Connector Terminals
Courtesy of NISSAN MOTOR CO., U.S.A.
CLOSE SWITCH GROUND INSPECTION
Check continuity between back door latch (close switch) connector D511 terminal 8 and ground.

8 (B) - Ground: Continuity should exist.

OK or NG
1. OK: Replace the back door latch.
2. NG: Repair the harness between the back door latch (close switch) and ground.
Fig 4: Checking Continuity Between Back Door Latch (Close Switch) Connector D511 Terminal 8 & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.