Page 884 of 4801

DLK-116
< DTC/CIRCUIT DIAGNOSIS >
KEY CYLINDER SWITCH
2. Disconnect main power window and door lock/unlock switch connector and front door lock assembly LHconnector.
3. Check continuity between main power window and door lock/unlock switch connector and front door lock
assembly LH connector.
4. Check continuity between main power window and door lock/unlock switch connector and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3.CHECK DOOR KEY CYLINDER SWITCH GROUND CIRCUIT
Check continuity between front door lock assembly LH connector and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4.CHECK DOOR KEY CYLINDER SWITCH
Check door key cylinder switch.
Refer to DLK-117, "Component Inspection"
.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace front door lock assembly LH. Refer to DLK-203, "FRONT DOOR LOCK : Removal and
Installation".
Diagnosis Procedure (With LH Anti-Pinch Only)INFOID:0000000009461847
Regarding Wiring Diagram information, refer to DLK-51, "Wiring Diagram".
1.CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between BCM connector and ground.
Main power window
and door lock/unlock
switch connector Te r m i n a l
Front door lock assembly
LH connector Terminal Continuity
D7 3
D14 6
Ye s
15 5
Power window main switch connector Terminal
GroundContinuity
D7 3
No
15
Front door lock assembly LH
connector Terminal
GroundContinuity
D14 4 Yes
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
Page 885 of 4801

KEY CYLINDER SWITCHDLK-117
< DTC/CIRCUIT DIAGNOSIS >
C
D E
F
G H
I
J
L
M A
B
DLK
N
O P
Is the inspection result normal?
YES >> Replace front door lock assembly LH. Refer to PWC-65, "Removal and Installation".
NO >> GO TO 2
2.CHECK DOOR KEY CYLINDE R SWITCH GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front door lock assembly LH connector.
3. Check continuity between front door lock assembly LH connector and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3.CHECK DOOR KEY CYLINDER SIGNAL CIRCUIT
1. Disconnect BCM connector M18 and M17.
2. Check continuity between front door lock assembly LH connector and BCM connector M18 or M17.
3. Check continuity between front door lock assembly LH connector and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4.CHECK DOOR KEY CYLINDER SWITCH
Check door key cylinder switch.
Refer to DLK-117, "Component Inspection"
.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace front door lock assembly LH. Refer to DLK-203, "FRONT DOOR LOCK : Removal and
Installation".
Component InspectionINFOID:0000000009461848
COMPONENT INSPECTION
Te r m i n a l s
Key positionVoltage (V)
(Approx.)
(+)
(–)
BCM connector Terminal
M18 74 GroundLock 0
Neutral / Unlock 5
M17 24 Unlock 0
Neutral / Lock 5
Front door lock assembly LH connector Terminal
GroundContinuity
D14 4 Yes
Front door lock assembly LH connector Terminal BCM connector Terminal Continuity
D14 5M1724
Ye s
6M1874
Front door lock assembly LH connector Te r m i n a l
GroundContinuity
D14 5
No
6
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
Page 886 of 4801
DLK-118
< DTC/CIRCUIT DIAGNOSIS >
KEY CYLINDER SWITCH
1.CHECK DOOR KEY CYLINDER SWITCH
Check front door lock assembly LH.
Is the inspection result normal?
YES >> Key cylinder switch is OK.
NO >> Replace front door lock assembly LH. Refer to DLK-203, "FRONT DOOR LOCK : Removal and
Installation".
Te r m i n a l
Key position Continuity
Front door lock assembly LH (key
cylinder switch) connector
5 4 Unlock Yes
Neutral / Lock No
6 Lock Yes
Neutral / Unlock No
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
Page 887 of 4801

UNLOCK SENSORDLK-119
< DTC/CIRCUIT DIAGNOSIS >
C
D E
F
G H
I
J
L
M A
B
DLK
N
O P
UNLOCK SENSOR
DescriptionINFOID:0000000009461849
Detects door lock condition of driver door.
Component Function CheckINFOID:0000000009461850
1.CHECK FUNCTION
With CONSULT
Check unlock sensor UNLK SEN –DR in “Data Monitor” mode.
Is the inspection result normal?
YES >> Unlock sensor is OK.
NO >> Refer to DLK-119, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009461851
Regarding Wiring Diagram information, refer to DLK-51, "Wiring Diagram".
1.CHECK UNLOCK SENSOR POWER SUPPLY
Check signal between BCM connector and ground with oscilloscope.
Is the inspection result normal?
YES >> GO TO 6
NO >> GO TO 2
2.CHECK UNLOCK SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM and front door lock assembly LH connector.
3. Check continuity between BCM connector and front door lock assembly LH connector.
4. Check continuity between BCM connector and ground.
Monitor item Condition
UNLK SEN –DR Front door lock (driver side) LOCK : ON
Front door lock (dri ver side) UNLOCK : OFF
Te r m i n a l s
Front door lock assembly
LH condition Voltage (V)
(Approx.)
(+)
(–)
BCM connector Terminal
M17 30 Ground Locked
Unlocked 0
JPMIA0011GB
BCM connector Terminal Front door lock assem-
bly LH connector Terminal Continuity
M17 30 D14 3 Yes
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
Page 888 of 4801

DLK-120
< DTC/CIRCUIT DIAGNOSIS >
UNLOCK SENSOR
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness between BCM and front door lock assembly LH.
3.CHECK UNLOCK SENSOR GROUND CIRCUIT
Check continuity between front door lock assembly LH connector and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4.CHECK BCM OUTPUT SIGNAL
1. Connect BCM harness connector.
2. Check signal between BCM connector and ground with oscilloscope.
Is the inspection result normal?
YES >> GO TO 5
NO >> Replace BCM. Refer to BCS-80, "Removal and Installation"
5.CHECK UNLOCK SENSOR
Refer to DLK-120, "Component Inspection"
.
Is the inspection result normal?
YES >> GO TO 6
NO >> Replace front door lock assembly LH. Refer to DLK-203, "FRONT DOOR LOCK : Removal and
Installation".
6.CHECK INTERMITTENT INCIDENT
Refer to GI-43, "Intermittent Incident"
.
>> Inspection End.
Component InspectionINFOID:0000000009461852
1.CHECK UNLOCK SENSOR
Check unlock sensor.
BCM connector Terminal GroundContinuity
M17 30 No
Front door lock assembly LH connector Te r m i n a l
GroundContinuity
D14 4 Yes
Te r m i n a l s Voltage (V)
(Approx.)
(+)
(–)
BCM connector Terminal
M17 30 Ground
JPMIA0011GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
Page 889 of 4801
UNLOCK SENSORDLK-121
< DTC/CIRCUIT DIAGNOSIS >
C
D E
F
G H
I
J
L
M A
B
DLK
N
O P
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace front lock assembly LH. Refer to DLK-203, "FRONT DOOR LOCK : Removal and Instal-
lation".
Te r m i n a l
Front door lock assembly LH
condition Continuity
Front door lock assembly LH
34 Unlock Yes
Lock No
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
Page 895 of 4801

TRUNK LAMP SWITCHDLK-127
< DTC/CIRCUIT DIAGNOSIS >
C
D E
F
G H
I
J
L
M A
B
DLK
N
O P
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness between BCM and trunk lamp switch and trunk release solenoid.
3.CHECK TRUNK LAMP SWITCH GROUND CIRCUIT
Check continuity between trunk lid lock assembly connector and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace trunk lamp switch and trunk release solenoid ground circuit.
4.CHECK BCM OUTPUT SIGNAL
1. Insure trunk remains closed during this step.
2. Connect BCM connector.
3. Check voltage between BCM connector and ground.
Is the inspection result normal?
YES >> GO TO 5
NO >> Replace BCM. Refer to BCS-80, "Removal and Installation"
.
5.CHECK TRUNK LAMP SWITCH
Refer to DLK-127, "Component Inspection"
.
Is the inspection result normal?
YES >> GO TO 6
NO >> Replace trunk lamp switch and trunk release solenoid.
6.CHECK INTERMITTENT INCIDENT
Refer to GI-43, "Intermittent Incident"
.
>> Inspection End.
Component InspectionINFOID:0000000009461864
1.CHECK TRUNK LAMP SWITCH
1. Turn ignition switch OFF.
2. Disconnect trunk lamp switch and trunk release solenoid connector.
3. Check trunk lamp switch.
BCM connector Terminal GroundContinuity
M19 97 No
Trunk lamp switch and trunk release solenoid connector Te r m i n a l
GroundContinuity
B28 2 Yes
Te r m i n a l s Voltage (V)
(Approx.)
(+)
(–)
BCM connector Terminal
M19 97 Ground
JPMIA0011GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
Page 897 of 4801

DOOR REQUEST SWITCHDLK-129
< DTC/CIRCUIT DIAGNOSIS >
C
D E
F
G H
I
J
L
M A
B
DLK
N
O P
DOOR REQUEST SWITCH
DescriptionINFOID:0000000009461865
Transmits door lock/unlock operation to BCM.
Component Function CheckINFOID:0000000009461866
1.CHECK FUNCTION
With CONSULT
Check door request switch REQ SW-DR, REQ SW-AS in Data Monitor mode.
Is the inspection result normal?
YES >> Door request switch is OK.
NO >> Refer to DLK-129, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009461867
Regarding Wiring Diagram information, refer to DLK-61, "Wiring Diagram".
1.CHECK DOOR REQUEST SWITCH OUTPUT SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 6
NO >> GO TO 2
Monitor item Condition
REQ SW-DR
REQ SW-AS Door request switch is pressed : ON
Door request switch is released : OFF
Te r m i n a l s Door request
switch Condition Voltage (V)
(Approx.)
(+)
(–)
BCM connector Terminal
M18 Door request switch
(driver side) 71
Ground Pressed 0
Released
Door request switch (passenger side) 72 Pressed 0
Released
JMKIA0059GB
JMKIA0059GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM