Nissan Titan A60. Instruction — part 986
WCS
SEAT BELT BUCKLE SWITCH SIGNAL CIRCUIT
WCS-19
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
YES
>> Inspection End.
NO
>> Repair harness or connector.
Component Inspection
INFOID:0000000006166410
1.
CHECK SEAT BELT BUCKLE SWITCH
1. Turn ignition switch OFF.
2. Disconnect the seat belt buckle switch LH connector.
3. Check continuity between the seat belt buckle switch LH terminals 1 and 2.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace the seat belt buckle switch LH.
1– 2
When seat belt is
fastened
: Continuity should not exist.
When seat belt is
unfastened
: Continuity should exist.
WCS-20
< DTC/CIRCUIT DIAGNOSIS >
KEY SWITCH SIGNAL CIRCUIT
KEY SWITCH SIGNAL CIRCUIT
Description
INFOID:0000000006166411
Transmits a key switch signal to the BCM.
Component Function Check
INFOID:0000000006166412
1.
CHECK BCM INPUT SIGNAL
Select “DATA MONITOR” for “BCM” and check the “KEY ON SW” monitor value.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> • For vehicles with column shift, refer to
WCS-20, "Diagnosis Procedure - Column Shift"
.
• For vehicles with floor shift, refer to
WCS-21, "Diagnosis Procedure - Floor Shift"
Diagnosis Procedure - Column Shift
INFOID:0000000006713809
Regarding Wiring Diagram information, refer to
.
COLUMN SHIFT
1.
CHECK FUSE
Check if the key switch 10A fuse [No. 3, located in the fuse block (J/B)] is blown.
Is the fuse blown?
YES
>> Be sure to repair the cause of malfunction before installing new fuse.
NO
>> GO TO 2
2.
CHECK BCM INPUT SIGNAL
Check voltage between BCM harness connector M18 terminal 37
and ground.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> GO TO 3
3.
CHECK KEY SWITCH CIRCUIT
KEY ON SW
When key is inserted into key cylinder
: ON
When key is removed from key cylinder : OFF
Terminals
Condition
Voltage
(Approx.)
(+)
(
−)
BCM
connector
Terminal
M18
37
Ground
Key is inserted
Battery voltage
Key is removed
0
PKIC0721E
WCS
KEY SWITCH SIGNAL CIRCUIT
WCS-21
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
1. Disconnect BCM connector M18 and key switch connector.
2. Check continuity between BCM harness connector M18 (A) ter-
minal 37 and key switch harness connector M80 (B) terminal 4.
3. Check continuity between BCM harness connector M18 (A) ter-
minal 37 and ground.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Repair harness or connector.
4.
CHECK KEY SWITCH POWER SUPPLY CIRCUIT
Check voltage between key switch harness connector M80 terminal
3 and ground.
Is the inspection result normal?
YES
>> Replace key switch.
NO
>> Repair harness or connector.
Diagnosis Procedure - Floor Shift
INFOID:0000000006166413
Regarding Wiring Diagram information, refer to
.
FLOOR SHIFT
1.
CHECK FUSE
Check if the key switch and key lock solenoid 10A fuse [No. 3, located in the fuse block (J/B)] is blown.
Is the fuse blown?
YES
>> Be sure to repair the cause of malfunction before installing new fuse.
NO
>> GO TO 2
2.
CHECK BCM INPUT SIGNAL
BCM
Key switch
Continuity
Connector
Terminal
Connector
Terminal
M18 (A)
37
M80 (B)
4
Yes
BCM
Ground
Continuity
Connector
Terminal
M18 (A)
37
No
AWNIA0178ZZ
Terminals
Voltage
(Approx.)
(+)
(
−)
Key switch
Terminal
M80
3
Ground
Battery voltage
AWNIA0179ZZ
WCS-22
< DTC/CIRCUIT DIAGNOSIS >
KEY SWITCH SIGNAL CIRCUIT
Check voltage between BCM harness connector M18 terminal 37
and ground.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> GO TO 3
3.
CHECK KEY SWITCH CIRCUIT
1. Disconnect BCM connector M18 and key switch and key lock solenoid connector.
2. Check continuity between BCM harness connector M18 terminal 37 and key switch and key lock solenoid
harness connector M27 terminal 4.
3. Check continuity between BCM harness connector M18 terminal 37 and ground.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Repair harness or connector.
4.
CHECK KEY SWITCH POWER SUPPLY CIRCUIT
Check voltage between key switch and key lock solenoid harness connector M27 terminal 3 and ground.
Is the inspection result normal?
YES
>> Replace key switch and key lock solenoid.
NO
>> Repair harness or connector.
Component Inspection - Column Shift
INFOID:0000000006713810
COLUMN SHIFT
1.
CHECK KEY SWITCH
Terminals
Condition
Voltage
(Approx.)
(+)
(
−)
BCM
connector
Terminal
M18
37
Ground
Key is inserted
Battery voltage
Key is removed
0
PKIC0721E
BCM
Key switch and
key lock solenoid
Continuity
Connector
Terminal
Connector
Terminal
M18
37
M27
4
Yes
BCM
Ground
Continuity
Connector
Terminal
M18
37
No
Terminals
Voltage
(Approx.)
(+)
(
−)
Key switch and key lock
solenoid
Terminal
M27
3
Ground
Battery voltage
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