Nissan Titan. Manual — part 79
POWER SUPPLY AND GROUND CIRCUIT
DLK-25
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
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
DLK-26
< DTC/CIRCUIT DIAGNOSIS >
DOOR SWITCH
DOOR SWITCH
KING CAB
KING CAB : Description
INFOID:0000000009878763
Detects door open/close condition.
KING CAB : Component Function Check
INFOID:0000000009878764
1.
CHECK FUNCTION
With CONSULT
Check door switches in data monitor mode with CONSULT.
Is the inspection result normal?
YES
>> Door switch is OK.
NO
>> Refer to
DLK-26, "KING CAB : Diagnosis Procedure"
.
KING CAB : Diagnosis Procedure
INFOID:0000000009878765
Regarding Wiring Diagram information, refer to
DLK-76, "Wiring Diagram - King Cab"
1.
CHECK DOOR SWITCHES INPUT SIGNAL
With CONSULT
Check door switches ("DOOR SW-DR", "DOOR SW-AS") in DATA MONITOR mode with CONSULT. Refer to
DLK-19, "DOOR LOCK : CONSULT Function (BCM - DOOR LOCK)"
.
• When doors are open:
• When doors are closed:
Without CONSULT
Check voltage between BCM connector M18 or M19 terminals 12, 47 and ground.
Is the inspection result normal?
YES
>> Door switch circuit is OK.
NO
>> GO TO 2
2.
CHECK DOOR SWITCH CIRCUIT
Monitor item
Condition
DOOR SW-DR
CLOSE
→ OPEN: OFF → ON
DOOR SW-AS
DOOR SW-DR
:ON
DOOR SW-AS
:ON
DOOR SW-DR
:OFF
DOOR SW-AS
:OFF
Connector
Item
Terminals
Condition
Voltage (V)
(Approx.)
(+)
(–)
M19
Door switches
LH
47
Ground
Open
↓
Closed
0
↓
Battery voltage
M18
Door switches
RH
12
LIIA1174E
DOOR SWITCH
DLK-27
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
1. Turn ignition switch OFF.
2. Disconnect door switch and BCM.
3. Check continuity between door switch connector B8 (Front LH), B108 (Front RH) terminal 2, B73 (Rear
upper LH), B156 (Rear upper RH), B74 (Rear lower LH), B157 (Rear lower RH) terminal 1 and BCM con-
nector M18, M19 terminals 12, and 47.
4. Check continuity between door switch connector B8 (Front LH),
B108 (Front RH) terminal 2, B73 (Rear upper LH), B156 (Rear
upper RH), B74 (Rear lower LH), B157 (Rear lower RH) terminal
1 and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK DOOR SWITCHES
Check continuity between door switch terminals.
Is the inspection result normal?
YES
>> Repair or replace harness.
NO
>> Replace door switch.
CREW CAB
CREW CAB : Description
INFOID:0000000009878766
Detects door open/close condition.
CREW CAB : Component Function Check
INFOID:0000000009878767
1.
CHECK FUNCTION
With CONSULT
Check door switches in data monitor mode with CONSULT.
Is the inspection result normal?
YES
>> Door switch is OK.
NO
>> Refer to
DLK-28, "CREW CAB : Diagnosis Procedure"
2 - 47
:Continuity should exist
2 - 12
:Continuity should exist
1 - 47
:Continuity should exist
1 - 12
:Continuity should exist
2 - Ground
:Continuity should not exist
1 - Ground
:Continuity should not exist
LIIA1175E
Item
Terminals
Condition
Continuity
Door switches
(front)
2 – 3
Open
No
Closed
Yes
Door switches (rear
upper and lower)
1 – 2
Open
No
Closed
Yes
WIIA0595E
Monitor item
Condition
DOOR SW-DR
CLOSE
→ OPEN: OFF → ON
DOOR SW-AS
DOOR SW-RL
DOOR SW-RR
DLK-28
< DTC/CIRCUIT DIAGNOSIS >
DOOR SWITCH
CREW CAB : Diagnosis Procedure
INFOID:0000000009878768
Regarding Wiring Diagram information, refer to
DLK-84, "Wiring Diagram - Crew Cab"
.
1.
CHECK DOOR SWITCHES INPUT SIGNAL
With CONSULT
Check door switches ("DOOR SW-DR", "DOOR SW-AS", "DOOR SW-RL", "DOOR SW-RR") in DATA MONI-
TOR mode with CONSULT. Refer to
DLK-19, "DOOR LOCK : CONSULT Function (BCM - DOOR LOCK)"
.
• When doors are open:
• When doors are closed:
Without CONSULT
Check voltage between BCM connector M18 or M19 terminals 12, 13, 47, 48 and ground.
Is the inspection result normal?
YES
>> Door switch circuit is OK.
NO
>> GO TO 2
2.
CHECK DOOR SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door switch and BCM.
3. Check continuity between door switch connector B8 (Front LH), B108 (Front RH), B18 (Rear LH), B116
(Rear RH) terminal 2 and BCM connector M18, M19 terminals 12, 13, 47 and 48.
DOOR SW-DR
:ON
DOOR SW-AS
:ON
DOOR SW-RL
:ON
DOOR SW-RR
:ON
DOOR SW-DR
:OFF
DOOR SW-AS
:OFF
DOOR SW-RL
:OFF
DOOR SW-RR
:OFF
Connector
Item
Terminals
Condition
Voltage (V)
(Approx.)
(+)
(–)
M19
Front door
switch LH
47
Ground
Open
↓
Closed
0
↓
Battery voltage
Rear door
switch LH
48
M18
Front door
switch RH
12
Rear door
switch RH
13
LIIA1177E
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