Door Switch Check

WARNING: This page is about a different car, the 2004 Nissan Frontier. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DOOR SWITCH INPUT SIGNAL
Check voltage between smart entrance control unit connector M110 terminals 1 (G/R), 2 (R/B) or 3 (R/B) (Crew Cab with vehicle security system) and ground.

Fig 1: Checking Voltage Between Smart Entrance Control Unit Connector M110 Terminals 1 (G/R), 2 (R/B) Or 3 (R/B) And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

Refer to WIRING DIAGRAM - KEYLES - .

OK or NG
1. OK: Door switch is OK.
2. NG: GO TO 2.
CHECK DOOR SWITCH
1. Disconnect door switch harness connector.
2. Check continuity between door switch terminals.
  
  Fig 2: Checking Continuity Between Door Switch Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Door switch is pressed : Continuity should not exist.
  
  Door switch is released : Continuity should exist.
OK or NG
1. OK: Check the following.
  - Front door switch LH ground circuit or door switch ground condition
  - Harness for open or short between smart entrance control unit and door switch
2. NG: Replace door switch.