Door Switch Check

WARNING: This page is about a different car, the 2006 Nissan Xterra. 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 doors are open:
DOOR SW-DR: ON

DOOR SW-AS: ON

DOOR SW-RL: ON

DOOR SW-RR: ON

BACK DOOR SW: ON
When doors are closed:
DOOR SW-DR: OFF

DOOR SW-AS: OFF

DOOR SW-RL: OFF

DOOR SW-RR: OFF

BACK DOOR SW: OFF

Fig 1: Consult-II Display - DATA Monitor

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.

TERMINALS CONDITION CONTINUITY CHART

Connector	Item	Terminals		Condition	Voltage (V) (Approx.)
Connector	Item	(+)	(-)	Condition	Voltage (V) (Approx.)
M19	Back door switch	43	Ground	Open Closed	0 Battery voltage
	Front door switch LH	47
	Rear door switch LH	48
M18	Front door switch RH	12
Rear door switch RH	13	12

Fig 2: Checking Voltage Between BCM Connector M18 Or M19 Terminals 12

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

OK or NG

OK: Door switch circuit is OK.

NG: GO TO 2.

CHECK BCM OUTPUT VOLTAGE
1. Turn ignition switch OFF.
2. Disconnect door switches.
3. Check voltage between BCM connector M18, M19 terminals 12, 13, 43, 47, 48 and ground.
  12 - Ground: Battery voltage
  
  13 - Ground: Battery voltage
  
  43 - Ground: Battery voltage
  
  47 - Ground: Battery voltage
  
  48 - Ground: Battery voltage
Fig 3: Checking Voltage Between BCM Connector M18, M19 Terminals
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 3.

NG: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
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 D502 (Back) terminal 3 and BCM connector M18, M19 terminals 12, 13, 43, 47 and 48.
  2 - 47: Continuity should exist .
  
  2 - 12: Continuity should exist .
  
  2 - 48: Continuity should exist .
  
  2 - 13: Continuity should exist .
  
  3 - 43: 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 D502 (Back) terminal 3 and ground.
  2 - Ground: Continuity should not exist .
  
  3 - Ground: Continuity should not exist .
Fig 4: Checking Continuity Between Door Switch Connector B8
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 4.

NG: Repair or replace harness.
CHECK DOOR SWITCHES
FRONT AND REAR DOORS

Check continuity between front or rear door switch terminal 2 and exposed metal of switch while pressing and releasing switch.

When front or rear door switch is released: Continuity should exist .

When front or rear door switch is pushed: Continuity should not exist .

Fig 5: Checking Continuity Between Front Or Rear Door Switch Terminal
Courtesy of NISSAN MOTOR CO., U.S.A.

BACK DOOR

Check continuity between back door switch terminals 3 and 1 while pressing and releasing switch.

When back door switch is released: Continuity should exist .

When back door switch is pushed: Continuity should not exist .

Fig 6: Checking Switch Case Ground Condition (Front And Rear Door) Or Ground Circuit
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Check switch case ground condition (front and rear door) or ground circuit (back door).

NG: Replace door switch.