Door Switch Check

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DOOR SWITCHES INPUT SIGNAL
With CONSULT-II

Check door switches ("DOOR SW-DR", "DOOR SW-AS", "DOOR SW-RL", "DOOR SW-RR", "BACK DOOR SW") in DATA MONITOR mode with CONSULT-II. Refer to "DATA MONITOR ".
- When any doors are open:
  1. DOOR SW-DR: ON
  2. DOOR SW-AS: ON
  3. DOOR SW-RL: ON
  4. DOOR SW-RR: ON
  5. BACK DOOR SW: ON
- When any doors are closed:
  1. DOOR SW-DR: OFF
  2. DOOR SW-AS: OFF
  3. DOOR SW-RL: OFF
  4. DOOR SW-RR: OFF
  5. BACK DOOR SW: OFF
  Fig 1: Identifying Data Monitor Display
  Courtesy of NISSAN MOTOR CO., U.S.A.
Without CONSULT-II

Check voltage between BCM connector M18 or M19 terminals 12, 13, 43, 47, 48 and ground.

Fig 2: BCM Connector M18, M19 And Ground Voltage Specifications Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: Checking Voltage Between BCM Connector M18, M19 Terminals 12, 13, 43, 47, 48 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: System is OK.
2. NG: GO TO 2.
CHECK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door switch and BCM.
3. Check continuity between door switch connector B8 (front LH), B108 (front RH), B18 (rear LH), B116 (rear RH) terminal 2 or D503 (back door latch) terminal 7 and BCM connector M18, M19 terminals 12, 13, 43, 47 and 48.
  1. 2 (SB) - 47 (SB): Continuity should exist.
  2. 2 (R/L) - 12 (R/L): Continuity should exist.
  3. 2 (R/Y) - 48 (R/Y): Continuity should exist.
  4. 2 (GR) - 13 (GR): Continuity should exist.
  5. 7 (R/W) - 43 (R/B): Continuity should exist.
4. Check continuity between door switch connector B8 (front LH), B108 (front RH), B18 (rear LH), B116 (rear RH) terminal 2 or D503 (back door latch) terminal 7 and ground.
  1. 2 (SB, R/L, R/Y or GR) - Ground: Continuity should not exist.
  2. 7 (R/W) - Ground: Continuity should not exist.
OK or NG
1. OK: GO TO 3.
2. NG: Repair or replace harness.
Fig 4: Checking Continuity Between Door Switch Connector B8 , B108 , B18, B116 Terminal 2 Or D503 terminal 7 And BCM Connector M18, M19 Terminals 12, 13, 43, 47 And 48
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK DOOR SWITCHES
1. Disconnect door switch harness.
2. Check continuity between door switch terminals.
  
  Fig 5: Door Switch Terminals Continuity Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 6: Checking Continuity Between Door Switch Terminals
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: Check door switch case ground condition (front or rear door) or ground circuit [back door latch (door ajar switch)].
2. NG: Replace door switch.