Open Switch System Inspection

WARNING: This page is about a different car, the 2006 Infiniti QX56. 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 between back door control unit connector B55 terminal 15 and ground.

TERMINALS VOLTAGE CHART

15 - Ground

Fig 1: Identifying 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 connector.
2. Check continuity between back door latch (open switch) connector D503 terminal 4 and back door control unit connector B55 terminal 15.
  4 - 15 : Continuity should exist.
  
  Fig 2: Identifying Continuity Between Connector D503 Terminal 4 And Connector B55 Terminal 15
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : GO TO 3.
- NG : Repair or replace harness.
OPEN SWITCH GROUND INSPECTION
Check continuity between back door latch (open switch) connector D503 terminal 8 and ground.

8 - Ground : Continuity should exist.

Fig 3: Identifying Continuity Between Back Door Latch Connector D503 Terminal 8 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK : Replace the back door latch.
- NG : Repair or replace harness.