Door Lock and Unlock Switch Check

WARNING: This page is about a different car, the 2007 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DOOR LOCK AND UNLOCK INPUT SIGNAL

With CONSULT-III

Check door lock and unlock switch ("CDL LOCK SW" and "CDL UNLOCK SW") in DATA MONITOR mode with CONSULT-III.

DATA MONITOR MODE

Test item	Condition
CDL LOCK SW	Door lock and unlock switch is turned to LOCK	: ON
CDL LOCK SW	Other than above	: OFF
CDL UNLOCK SW	Door lock and unlock switch is turned to UNLOCK	: ON
CDL UNLOCK SW	Other than above	: OFF

Without CONSULT-III

Check voltage between BCM connector and ground

BCM CONNECTOR TERMINAL VOLTAGE SPECIFICATION

Terminals			Door lock and unlock switch condition	Voltage (V) (Approx.)
(+)		(-)
BCM connector	Terminal	(-)
M19	45	Ground	Lock	0
	45		Neutral / Unlock	Battery voltage
	46		Unlock	0
	46		Neutral / Lock	Battery voltage

OK or NG

OK: Door lock and unlock switch is OK.

NG1: With power windows, GO TO 2.

NG2: Without power windows, GO TO 5.

Fig 1: Checking Voltage Between BCM Connector And Ground

CHECK DOOR LOCK/UNLOCK SWITCH

Turn ignition switch OFF.
Disconnect door lock/unlock switch.

Check continuity between main power window and door lock/unlock switch terminals 10, 11 and 14.

CONNECTOR TERMINAL CONTINUITY SPECIFICATION

Terminals		Condition	Continuity
10	14	Lock	Yes
10		Unlock/Neutral	No
11		Unlock	Yes
11		Lock/Neutral	No

Check continuity between power window and door lock/unlock switch RH terminals 1, 2 and 3.

CONNECTOR TERMINAL CONTINUITY SPECIFICATION

Terminals		Condition	Continuity
1	3	Lock	Yes
1		Unlock/Neutral	No
2		Unlock	Yes
2		Lock/Neutral	No

Fig 2: Checking Continuity Between Power Window And Door Lock/Unlock Switch RH Terminals 1, 2 And 3

OK or NG

OK: GO TO 3.

NG: Replace door lock/unlock switch.

CHECK DOOR LOCK/UNLOCK SWITCH GROUND HARNESS
1. Disconnect main power window and door lock/unlock switch or power window and door lock/unlock switch RH.
2. Check continuity between main power window and door lock/unlock switch connector D5 terminal 14 and ground.
  14 - Ground : Continuity should exist.
  
  Fig 3: Checking Continuity Between Door Lock/Unlock Switch Connector D5 Terminal 14 And Ground
3. Check continuity between power window and door lock/unlock switch RH connector D104 terminal 3 and ground
  3 - Ground : Continuity should exist.
OK or NG

OK: GO TO 4.

NG: Repair or replace harness.

Fig 4: Checking Continuity Between Power Window And Door Lock/Unlock Switch RH Connector D104 Terminal 3 And Ground
CHECK DOOR LOCK SWITCH CIRCUIT
1. Disconnect BCM.
2. Check continuity between BCM connector M19 terminal 45 and main power window and door lock/unlock switch connector D5 terminal 10 or power window and door lock/unlock switch RH connector D104 terminal 1.
  1 - 45 : Continuity should exist.
  
  10 - 45 : Continuity should exist.
3. Check continuity between BCM connector M19 terminal 45 and ground.
  45 - Ground : Continuity should not exist.
  
  Fig 5: Checking Continuity Between BCM Connector M19 Terminal 45 And Ground
4. Check continuity between BCM connector M19 terminal 46 and main power window and door lock/unlock switch LH connector D5 terminal 11 or power window and door lock/unlock switch RH connector D104 terminal 2.
  2 - 46 : Continuity should exist.
  
  11 - 46 : Continuity should exist.
5. Check continuity between BCM connector M19 terminal 46 and ground.
  46 - Ground : Continuity should not exist.
OK or NG

OK: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".

NG: Repair or replace harness.

Fig 6: Checking Continuity Between BCM Connector M19 Terminal 46 And Ground

CHECK DOOR LOCK/UNLOCK SWITCH LH

Turn ignition switch OFF.
Disconnect door lock/unlock switch LH.

Check continuity between door lock/unlock switch LH terminals 1, 2 and 5.

CONNECTOR TERMINAL CONTINUITY SPECIFICATION

Terminals		Condition	Continuity
1	5	Lock	Yes
1		Unlock/Neutral	No
2		Unlock	Yes
2		Lock/Neutral	No

OK or NG

OK: GO TO 6.

NG: Replace door lock/unlock switch LH.

Fig 7: Checking Continuity Between Door Lock/Unlock Switch LH Terminals 1, 2 And 5

CHECK DOOR LOCK/UNLOCK SWITCH GROUND HARNESS
Check continuity between door lock/unlock switch connector D6 terminal 5 and ground.

5 - Ground : Continuity should exist.

OK or NG

OK: GO TO 7.

NG: Repair or replace harness.

Fig 8: Checking Continuity Between Door Lock/Unlock Switch Connector D6 Terminal 5 And Ground
CHECK DOOR LOCK SWITCH CIRCUIT
1. Disconnect BCM.
2. Check continuity between BCM connector M19 (A) terminal 45 and door lock/unlock switch LH connector D6 (B) terminal 1.
  1 - 45 : Continuity should exist.
3. Check continuity between BCM connector M19 (A) terminal 45 and ground.
  45 - Ground : Continuity should not exist.
  
  Fig 9: Checking Continuity Between BCM Connector M19 Terminal 45 And Ground
4. Check continuity between BCM connector M19 (A) terminal 46 and door lock/unlock switch LH connector D6 (B) terminal 2.
  2 - 46 : Continuity should exist.
5. Check continuity between BCM connector M19 (A) terminal 46 and ground.
  46 - Ground : Continuity should not exist.
OK or NG

OK: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".

NG: Repair or replace harness.

Fig 10: Checking Continuity Between BCM Connector M19 Terminal 46 And Ground