Half-Latch 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.

HALF-LATCH SWITCH SIGNAL INSPECTION
1. Turn ignition switch OFF.
2. While fully opening and closing the sliding door, check voltage between back door control unit connector B55 terminal 22 and ground.
Fig 1: Back Door Control Unit Connector B55 Terminal 22 & Ground Waveform
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Voltage Between Back Door Control Unit Connector B55 Terminal 22 & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: Half-latch switch is OK.
2. NG: GO TO 2.
HALF-LATCH SWITCH CIRCUIT INSPECTION
1. Disconnect back door latch switch and back control unit connector.
2. Check continuity between back door latch (half-latch switch) connector D511 terminal 6 and back control unit connector B55 terminal 22.
  6 (B/R) - 22 (B/R): Continuity should exist.
OK or NG
1. OK: GO TO 3.
2. NG: Repair the harness between the back door latch (half-latch switch) and the back door control unit.
Fig 3: Checking Continuity Between Back Door Latch (Half-Latch Switch) & Back Control Unit Connector Terminal
Courtesy of NISSAN MOTOR CO., U.S.A.
HALF-LATCH SWITCH GROUND INSPECTION
Check continuity between back door latch (half-latch 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 (half-latch switch) and ground.
Fig 4: Checking continuity between back door latch (half-latch switch) connector D511 terminal 8 and ground
Courtesy of NISSAN MOTOR CO., U.S.A.