Close Switch System Inspection

WARNING: This page is about a different car, the 2008 Nissan Quest. 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 waveform between back door control unit connector B55 terminal 14 and ground using an oscilloscope.

TERMINALS VOLTAGE CHART

14 - Ground

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

Fig 1: Checking Voltage 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 (B) D511 terminal 5 and back door control unit connector (A) B55 terminal 14.
  5 - 14 : Continuity should exist.
3. Check continuity between back door latch (close switch) connector (B) D511 terminal 5 and ground.
  5 - Ground : Continuity should not exist.
OK or NG

OK: GO TO 3.

NG: Repair or replace harness.

Fig 2: Checking Continuity Between Back Door Latch Connector (B) Terminal 5 And Back Door Control Unit Connector (A) Terminal 14, And Between Connector (B) Terminal 5 And Ground
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 - Ground : Continuity should exist.

OK or NG

OK: Replace the back door latch.

NG: Repair or replace harness.

Fig 3: Checking Continuity Between Back Door Latch Connector D511 Terminal 8 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.