Nissan Frontier. Instruction — part 248
DLK-38
< DTC/CIRCUIT DIAGNOSIS >
DOOR LOCK AND UNLOCK SWITCH
5. Check continuity between BCM connector M19 terminal 46 and
ground.
Is the inspection result normal?
YES
>> GO TO 5
NO
>> Repair or replace harness.
5.
CHECK BCM OUTPUT VOLTAGE
1. Connect BCM.
2. Check voltage between BCM connector M19 terminals 45, 46
and ground.
Is the inspection result normal?
YES
>> Check condition of the harness and connector.
NO
BCS-49, "Removal and Installa-
.
2 - 46
: Continuity should exist.
11 - 46
: Continuity should exist.
46 - Ground
: Continuity should not exist.
WIIA0631E
45 - Ground
: Battery voltage
46 - Ground
: Battery voltage
LIIA1351E
KEY CYLINDER SWITCH
DLK-39
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
KEY CYLINDER SWITCH
DRIVER SIDE
DRIVER SIDE : Description
INFOID:0000000009478894
The main power window and door lock/unlock switch detects condition of the door key cylinder switch and
transmits to BCM as the LOCK or UNLOCK signal.
DRIVER SIDE : Component Function Check
INFOID:0000000009478895
1.
CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
Check "KEY CYL LK-SW" AND "KEY CYL UN-SW" in Data Monitor mode for “DOOR LOCK” with CONSULT.
Is the inspection result normal?
YES
>> Key cylinder switch is OK.
NO
>> Refer to
DLK-39, "DRIVER SIDE : Diagnosis Procedure"
DRIVER SIDE : Diagnosis Procedure
INFOID:0000000009478896
Regarding Wiring Diagram information, refer to
DLK-77, "Wiring Diagram - King Cab"
.
1.
CHECK DOOR KEY CYLINDER SWITCH LH
With CONSULT
Check front door lock assembly LH (key cylinder switch) ("KEY CYL LK-SW") and ("KEY CYL UN-SW) in
DATA MONITOR mode in CONSULT. Refer to
BCS-15, "DOOR LOCK : CONSULT Function (BCM - DOOR
• When key inserted in front key cylinder is turned to LOCK:
• When key inserted in front key cylinder is turned to UNLOCK:
Without CONSULT
Check voltage between BCM connector M18 terminals 7, 8 and
ground.
Monitor item
Condition
KEY CYL LK-SW
Lock
: ON
Neutral / Unlock
: OFF
KEY CYL UN-SW
Unlock
: ON
Neutral / Lock
: OFF
KEY CYL LK-SW
: ON
KEY CYL UN-SW
: ON
Connector
Terminals
Condition
Voltage (V)
(Approx.)
(+)
(–)
M18
7
Ground
Neutral/Lock
1.5
Unlock
0
8
Neutral/Unlock
1.5
Lock
0
WIIA0457E
DLK-40
< DTC/CIRCUIT DIAGNOSIS >
KEY CYLINDER SWITCH
Is the inspection result normal?
YES
>> Front door lock assembly LH (key cylinder switch) signal is OK.
NO
>> GO TO 2
2.
CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH)
1. Turn ignition switch OFF.
2. Disconnect front door lock assembly LH (key cylinder switch).
3. Check continuity between front door lock assembly LH (key cyl-
inder switch) connector terminals 3, 4 and 5.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Replace front door lock assembly LH (key cylinder switch). Refer to
3.
CHECK FRONT DOOR LOCK ASSEMBLY LH HARNESS
1. Disconnect BCM.
2. Check continuity between BCM connector M18 terminals 7, 8
and front door lock assembly LH connector D14 terminals 3, 5.
3. Check continuity between BCM connector M18 terminals 7, 8
and ground.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Repair or replace harness.
4.
CHECK FRONT DOOR LOCK ASSEMBLY LH GROUND
Check continuity between front door lock assembly LH connector
D14 terminal 4 and ground.
Is the inspection result normal?
YES
>> GO TO 5
NO
>> Repair or replace harness.
5.
CHECK BCM OUTPUT VOLTAGE
1. Connect BCM.
Terminals
Condition
Continuity
4 – 5
Key is turned to LOCK.
Yes
Key is in N position or turned to UN-
LOCK
No
3 – 4
Key is turned to UNLOCK.
Yes
Key is in N position or turned to LOCK
No
WIIA0458E
7 - 3
: Continuity should exist.
8 - 5
: Continuity should exist.
7 - Ground
: Continuity should not exist.
8 - Ground
: Continuity should not exist.
WIIA0676E
4 - Ground
: Continuity should exist.
WIIA0677E
KEY CYLINDER SWITCH
DLK-41
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
2. Check voltage between BCM connector M18 terminals 7, 8 and
ground.
Is the inspection result normal?
YES
>> Check condition of the harness and connector.
NO
>> Replace BCM. Refer to
BCS-49, "Removal and Installa-
.
7 - Ground
: Approx. 1.5V
8 - Ground
: Approx. 1.5V
WIIA0457E
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