Nissan Frontier D22. Instruction — part 155
VEHICLE SECURITY (THEFT WARNING) SYSTEM
BL-57
C
D
E
F
G
H
J
K
L
M
A
B
BL
3.
CHECK HOOD SWITCH INPUT SIGNAL
Check voltage between smart entrance control unit connector M110 terminal 6 (B/P) and ground.
Refer to
BL-49, "Wiring Diagram — VEHSEC —"
OK or NG
OK
>> Hood switch is OK.
NG
>> GO TO 4.
4.
CHECK HOOD SWITCH
1.
Disconnect hood switch harness connector.
2.
Check continuity between hood switch terminals + and –.
OK or NG
OK
>> Check the following.
●
Hood switch ground circuit
●
Harness for open or short between smart entrance control unit and hood switch
NG
>> Replace hood switch.
LEL029A
Continuity
:
Condition
: Pressed
No
Condition
: Released
Yes
AEL430B
BL-58
VEHICLE SECURITY (THEFT WARNING) SYSTEM
SECURITY INDICATOR LAMP CHECK
1.
CHECK INDICATOR LAMP OUTPUT SIGNAL
1.
Disconnect smart entrance control unit harness connector.
2.
Check voltage between smart entrance control unit harness connector M111 terminal 38 (G/OR) and
ground.
Refer to
BL-49, "Wiring Diagram — VEHSEC —"
.
OK or NG
OK
>> Security indicator lamp is OK.
NG
>> GO TO 2.
2.
CHECK INDICATOR LAMP
OK or NG
OK
>> GO TO 3.
NG
>> Replace indicator lamp.
3.
CHECK POWER SUPPLY CIRCUIT FOR INDICATOR LAMP
1.
Disconnect security indicator lamp harness connector.
2.
Check voltage between security indicator lamp harness connec-
tor terminal 1 and ground.
Does battery voltage exist?
Yes
>> Check harness for open or short between security indi-
cator lamp and smart entrance control unit.
No
>> Check the following.
●
7.5A fuse [No. 28, located in fuse block (J/B)]
●
Harness for open or short between security indicator
lamp and fuse
LEL030A
AEL145C
VEHICLE SECURITY (THEFT WARNING) SYSTEM
BL-59
C
D
E
F
G
H
J
K
L
M
A
B
BL
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 11 (Y) or 10 (Y/R) and
ground.
Refer to
BL-49, "Wiring Diagram — VEHSEC —"
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
BL-60
VEHICLE SECURITY (THEFT WARNING) SYSTEM
VEHICLE SECURITY HORN ALARM CHECK
1.
CHECK VEHICLE SECURITY HORN ALARM
1.
Sound horn by depressing horn switch on steering wheel.
OK or NG
OK
>> GO TO 2.
NG
>> Refer to
WW-10, "Wiring Diagram — HORN —"
2.
CHECK HORN ALARM OPERATION
1.
Disconnect smart entrance control unit harness connector.
2.
Apply ground to smart entrance control unit harness connector M111 terminal 42 (LG/R).
Refer to
BL-49, "Wiring Diagram — VEHSEC —"
.
OK or NG
OK
>> Replace smart entrance control unit.
NG
>> Repair harness or connectors.
VEHICLE SECURITY HEADLAMP ALARM CHECK
1.
CHECK VEHICLE SECURITY LAMP CIRCUIT
1.
Disconnect smart entrance control unit harness connector.
2.
Check continuity between smart entrance control unit M111 terminal 39 (R) and ground.
Refer to
BL-49, "Wiring Diagram — VEHSEC —"
.
OK or NG
OK
>> GO TO 2
NG
>> Check the following
●
Harness for open or short between smart entrance control unit and vehicle security lamp relay
●
Vehicle security lamp relay ground circuit
●
Vehicle security lamp relay.
Horn should sound
LEL033A
LEL363A
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