Door Switch Check

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DOOR SWITCHES INPUT SIGNAL

With CONSULT-III

Check door switches ("DOOR SW-DR", "DOOR SW-AS", "DOOR SW-RL", "DOOR SW-RR") in DATA MONITOR mode with CONSULT-III. Refer to "DATA MONITOR ".

When doors are open:
DOOR SW-DR: ON

DOOR SW-AS: ON

DOOR SW-RL: ON

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

DOOR SW-AS: OFF

DOOR SW-RL: OFF

DOOR SW-RR: OFF

without CONSULT-III

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

VOLTAGE REFERENCE CHART

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

Fig 1: Checking Voltage Between BCM Connector M18 Or M19 Terminals 12, 13, 47, 48 And Ground

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

OK or NG

OK: Door switch circuit is OK.

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) or B108 (Front RH) terminal 2, B18 (Rear LH) or B116 (Rear RH) terminal 1 and BCM connector M18, M19 terminals 12, 13, 47 and 48.
  2 - 47: Continuity should exist.
  
  2 - 12: Continuity should exist.
  
  1 - 48: Continuity should exist.
  
  1 - 13: Continuity should exist.
4. Check continuity between door switch connector B8 (Front LH) or B108 (Front RH) terminal 2, B18 (Rear LH) or B116 (Rear RH) terminal 1 and ground.
  2 - Ground: Continuity should not exist.
  
  1 - Ground: Continuity should not exist.
Fig 2: Checking Continuity Between Door Switch Connector B8 Terminal 2, B18 Terminal 1 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 3.

NG: Repair or replace harness.

CHECK DOOR SWITCHES

Check continuity between door switch terminal and switch case ground.

DOOR SWITCH TERMINAL AND SWITCH CASE GROUND

Component	Terminals	Condition of switch	Continuity
Front door switch LH/RH	2 - Case ground	Pushed	No
Front door switch LH/RH	2 - Case ground	Released	Yes
Rear door switch LH/RH	1 - Case ground	Pushed	No
Rear door switch LH/RH	1 - Case ground	Released	Yes

Fig 3: Checking Continuity Between Door Switch Terminal And Switch Case Ground

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

OK or NG

OK: Check door switch case ground condition. NG: Replace door switch.