Open Switch System Inspection

WARNING: This page is about a different car, the 2006 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

OPEN SWITCH SIGNAL INSPECTION

Turn ignition switch OFF.

While fully closing and opening the back door, check voltage waveform between back door control unit connector B55 terminal 15 and ground using an oscilloscope.

TERMINALS VOLTAGE REFERENCE

15 - Ground

Fig 1: Identifying Voltage Waveform Between Back Door Control Unit Connector B55 Terminal 15 And Ground

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

OK or NG

OK: Open switch is OK.

NG: GO TO 2.

OPEN SWITCH CIRCUIT INSPECTION
1. Disconnect back door latch and back door control unit.
2. Check continuity between back door latch (open switch) connector (B) D511 terminal 4 and back door control unit connector (A) B55 terminal 15.
  4 - 15: Continuity should exist.
3. Check continuity between back door latch (open switch) connector (B) D511 terminal 4 and ground.
  4 - Ground: Continuity should not exist.
OK or NG

OK: GO TO 3.

NG: Repair or replace harness.

Fig 2: Identifying Continuity Between Back Door Latch Connector D511 Terminal 4 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
OPEN SWITCH GROUND INSPECTION
Check continuity between back door latch (open switch) connector D511 terminal 3 and ground.

3 - Ground: Continuity should exist.

OK or NG

OK: Replace the back door latch.

NG: Repair or replace harness.

Fig 3: Identifying Continuity Between Back Door Latch Connector D511 Terminal 3 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.