Close 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.

CLOSE SWITCH SIGNAL INSPECTION

Turn ignition switch OFF.

While fully opening and closing the back door, check voltage between back door control unit connector B55 terminal 14 and-ground.

TERMINALS VOLTAGE CHART

14 - Ground

Fig 1: Identifying Waveform Between Back Door Control Unit Connector B55 Terminal 14 And-Ground

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

OK or NG

OK : Close switch is OK.
NG : GO TO 2.

CLOSE SWITCH CIRCUIT INSPECTION
1. Disconnect back door latch and back door control unit.
2. Check continuity between back door latch (close switch) connector D503 terminal 5 and back door control unit connector B55 terminal 14.
  5 - 14 : Continuity should exist.
  
  Fig 2: Identifying Connector D503 Terminal 5 And Back Door Control Unit Connector B55 Terminal 14
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : GO TO 3.
- NG : Repair or replace harness.
CLOSE SWITCH GROUND INSPECTION
Check continuity between back door latch (close 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.