Nissan Frontier D22. Manual — part 146
POWER DOOR LOCK SYSTEM
BL-21
C
D
E
F
G
H
J
K
L
M
A
B
BL
2.
CHECK FRONT DOOR SWITCH
1.
Disconnect door switch harness connector.
2.
Check continuity between door switch terminals.
OK or NG
OK
>> Check the following
●
Front door switch LH ground circuit or front door switch RH ground condition
●
Harness for open or short between smart entrance control unit and door switch
NG
>> Replace door switch.
KEY SWITCH (INSERTED) CHECK
1.
CHECK KEY SWITCH INPUT SIGNAL
1.
Check voltage between smart entrance control unit harness connector M111 terminal 25 (W/G) and
ground.
2.
BL-16, "Wiring Diagram — D/LOCK —"
OK or NG
OK
>> Key switch is OK.
NG
>> GO TO 2.
Terminals
Condition
Continuity
Front door switch
LH
2 - 3
Closed
No
Open
Yes
Front door switch
RH and rear door
switches
(+) - Ground
Closed
No
Open
Yes
AEL577C
LEL010A
BL-22
POWER DOOR LOCK SYSTEM
2.
CHECK KEY SWITCH POWER SUPPLY
1.
Disconnect key switch harness connector.
2.
Check voltage between key switch harness connector terminal 1
and ground.
Battery voltage should exist.
Refer to
BL-16, "Wiring Diagram — D/LOCK —"
.
OK or NG
OK
>> GO TO 3.
NG
>> Check the following
●
7.5A fuse [No. 28, located in the fuse block (J/B)]
●
Harness for open or short between key switch and
fuse
3.
CHECK KEY SWITCH
Check continuity between key switch terminals 1 and 2.
OK or NG
OK
>> Check harness for open or short between smart
entrance control unit and key switch.
NG
>> Replace key switch.
AEL415B
Continuity
Condition of key switch
: Key is inserted.
Yes
Condition of key switch
: Key is removed.
No
AEL416B
POWER DOOR LOCK SYSTEM
BL-23
C
D
E
F
G
H
J
K
L
M
A
B
BL
DOOR LOCK/UNLOCK SWITCH CHECK
1.
CHECK DOOR LOCK/UNLOCK SWITCH INPUT SIGNAL
1.
Disconnect smart entrance control unit harness connector.
2.
Check continuity between smart entrance control unit harness
connector M110 terminal 4 (BR) or 5 (LG/R) and ground.
Refer to
BL-16, "Wiring Diagram — D/LOCK —"
OK or NG
OK
>> Door lock/unlock switch is OK.
NG
>> GO TO 2.
2.
CHECK DOOR LOCK/UNLOCK SWITCH
1.
Disconnect door lock/unlock switch harness connector.
2.
Check continuity between door lock/unlock switch terminals.
OK or NG
OK
>> Check the following.
●
Ground circuit for door lock/unlock switch
●
Harness for open or short between door lock/unlock switch and smart entrance control unit
NG
>> Replace door lock/unlock switch.
Terminals
Door lock/unlock switch
(LH or RH) condition
Continuity
(+)
(-)
4
Body ground
N and Locked
No
Unlocked
Yes
5
Body ground
N and Unlocked
No
Locked
Yes
WIIA0116E
WEL865A
AEL556C
BL-24
POWER DOOR LOCK SYSTEM
DOOR KEY CYLINDER SWITCH CHECK
1.
CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL (LOCK/UNLOCK SIGNAL)
Check voltage between smart entrance control unit harness connector M110 terminal 10 (Y/R) or 11 (Y) and
ground.
BL-16, "Wiring Diagram — D/LOCK —"
.
OK or NG
OK
>> Door key cylinder switch is OK.
NG
>> GO TO 2.
2.
CHECK DOOR KEY CYLINDER SWITCH
1.
Disconnect door key cylinder switch harness connector.
2.
Check continuity between door key cylinder switch terminals.
OK or NG
OK
>> Check the following
●
Door key cylinder switch ground circuit
●
Harness for open or short between smart entrance control unit and door key cylinder switch
NG
>> Replace door key cylinder switch.
WEL518A
LEL032A
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