Nissan Titan A60. Manual — part 847
SEC-26
< DTC/CIRCUIT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
BCM
BCM : Diagnosis Procedure
INFOID:0000000006752633
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not blown.
Is the fuse blown?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit.
NO
>> GO TO 2
2.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK GROUND CIRCUIT
Terminal No.
Signal name
Fuses and fusible link No.
57
Battery power supply
22 (15A)
70
F (50A)
11
Ignition ACC or ON
4 (10A)
38
Ignition ON or START
59 (10A)
Connector
Terminals
Power
source
Condition
Voltage (V) (Ap-
prox.)
(+)
(-)
M18
11
Ground
ACC
power
supply
Ignition
switch
ACC or
ON
Battery voltage
38
Ground
Ignition
power
supply
Ignition
switch ON
or START
Battery voltage
M20
57
Ground
Battery
power
supply
Ignition
switch
OFF
Battery voltage
70
Ground
Battery
power
supply
Ignition
switch
OFF
Battery voltage
LIIA2415E
POWER SUPPLY AND GROUND CIRCUIT
SEC-27
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair or replace harness.
BCM
Ground
Continuity
Connector
Terminal
M20
67
Yes
LIIA0915E
SEC-28
< DTC/CIRCUIT DIAGNOSIS >
KEY CYLINDER SWITCH
KEY CYLINDER SWITCH
KING CAB
KING CAB : Description
INFOID:0000000006161588
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.
KING CAB : Component Function Check
INFOID:0000000006161589
1.
CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
Check "KEY CYL LK-SW" AND "KEY CYL UN-SW" in DATA MONITOR mode for “POWER DOOR LOCK
SYSTEM” with CONSULT-III.
Is the inspection result normal?
YES
>> Key cylinder switch is OK.
NO
>> Refer to
SEC-28, "KING CAB : Diagnosis Procedure"
.
KING CAB : Diagnosis Procedure
INFOID:0000000006161590
Regarding Wiring Diagram information, refer to
.
1.
CHECK DOOR KEY CYLINDER SWITCH LH
With CONSULT-III
Check front door lock assembly LH (key cylinder switch) ("KEY CYL LK-SW") and ("KEY CYL UN-SW) in
DATA MONITOR mode with CONSULT–III. Refer to
BCS-16, "DOOR LOCK : CONSULT-III Function (BCM -
.
• When key inserted in front key cylinder is turned to LOCK:
• When key inserted in front key cylinder is turned to UNLOCK:
Without CONSULT-III
Check voltage between main power window and door lock/unlock switch connector D15 terminals 6, 7 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
KEY CYLINDER SWITCH
SEC-29
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
Is the inspection result normal?
YES
>> Front door lock assembly LH (key cylinder switch) signal is OK.
NO
>> GO TO 2
2.
CHECK DOOR KEY CYLINDER SWITCH LH GROUND HARNESS
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 (A) D14 terminal 5 and body ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK DOOR KEY CYLINDER SWITCH LH
Check continuity between front door lock assembly LH (key cylinder
switch) terminals.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Replace front door lock assembly LH (key cylinder switch). Refer to
4.
CHECK DOOR KEY CYLINDER HARNESS
1. Disconnect main power window and door lock/unlock switch.
Connector
Terminals
Condition
Voltage (V)
(Approx.)
(+)
(–)
D15
6
Ground
Neutral/Unlock
5
Lock
0
7
Neutral/Lock
5
Unlock
0
LIIA1256E
Connector
Terminals
Continuity
D14
5 – Ground
Yes
WIIA0755E
Terminals
Condition
Continuity
1 – 5
Key is turned to UNLOCK or neutral.
No
Key is turned to LOCK.
Yes
5 – 6
Key is turned to LOCK or neutral.
No
Key is turned to UNLOCK.
Yes
LIIA1573E
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