Nissan Titan. Manual - part 469

FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) CHECK (CREW 

CAB)

PWC-49

< DTC/CIRCUIT DIAGNOSIS >

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1. Turn ignition switch OFF.

2. Disconnect main power window and door lock/unlock switch and

front door lock assembly LH (key cylinder switch).

3. Check continuity between main power window and door lock/

unlock switch connector (A) and front door lock assembly LH

(key cylinder switch) connector (B).

4. Check continuity between main power window and door lock/unlock switch connector (A) and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK DOOR KEY CYLINDER SWITCH GROUND CIRCUIT

Check continuity between front door lock assembly LH (key cylinder

switch) connector and ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair or replace harness.

4.

 CHECK DOOR KEY CYLINDER SWITCH

Check door key cylinder switch.

Refer to 

PWC-49, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-42, "Intermittent Incident"

.

NO

>> Replace front door lock assembly LH (key cylinder switch). 

Component Inspection

INFOID:0000000009878994

COMPONENT INSPECTION

1.

 CHECK DOOR KEY CYLINDER SWITCH

Main power window 

and door lock/unlock 

switch connector

Terminal

Front door lock as-

sembly LH (key cylin-
der switch) connector

Terminal

Continuity

D7 (A)

4

D14 (B)

1

Yes

6

6

Main power window and door 

lock/unlock switch connector

Terminal

Ground

Continuity 

D7 (A)

4

No

6

ALKIA1025ZZ

Front door lock assembly LH (key 

cylinder switch) connector

Terminal

Ground

Continuity 

D14

5

Yes

LIIA1572E

PWC-50

< DTC/CIRCUIT DIAGNOSIS >

FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) CHECK (CREW 

CAB)

Check front door lock assembly LH (key cylinder switch).

Is the inspection result normal?

YES

>> Key cylinder switch is OK.

NO

>> Replace front door lock assembly LH (key cylinder switch).

Terminal

Key position

Continuity

Front door lock assembly LH 

(key cylinder switch) connector

6 

5

Unlock

Yes

Neutral/Lock

No

1

Lock

Yes

Neutral/Unlock

No

LIIA1573E

FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) CHECK (KING 

CAB)

PWC-51

< DTC/CIRCUIT DIAGNOSIS >

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FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) CHECK
(KING CAB)

Description

INFOID:0000000009878995

Main power window and door lock/unlock switch detects condition of the door key cylinder and transmits to

BCM as the LOCK or UNLOCK signals. 

Component Function Check

INFOID:0000000009878996

1.

 CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL

Check (“KEY CYL LK-SW”, “KEY CYL UN-SW”) in “DATA MONITOR” mode for “POWER DOOR LOCK SYS-

TEM” with CONSULT. Refer to 

BCS-16, "DOOR LOCK : CONSULT Function (BCM - DOOR LOCK)"

.

Is the inspection result normal?

YES

>> Key cylinder switch is OK.

NO

>> Refer to 

PWC-51, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009878997

Regarding Wiring Diagram information, refer to 

PWC-81, "Wiring Diagram - King Cab"

.

1.

 CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL 

1. Turn ignition switch ON.

2. Check voltage between main power window and door lock/

unlock switch connector and ground.

Is the measurement value within the specification?

YES

>> Replace main power window and door lock/unlock switch. 

NO

>> GO TO 2

2.

 CHECK DOOR KEY CYLINDER SIGNAL CIRCUIT

Monitor item

Condition

KEY CYL LK-SW

Lock

: ON

Neutral / Unlock

: OFF

KEY CYL UN-SW

Unlock

: ON

Neutral / Lock

: OFF

Terminals

Key position

Voltage (V)

(Approx.)

(+)

(–)

Main power window 

and door lock/unlock 

switch connector

Terminal 

D15

6

Ground

Lock

0

Neutral/Unlock

5

7

Unlock

0

Neutral/Lock

5

LIIA1161E

PWC-52

< DTC/CIRCUIT DIAGNOSIS >

FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH) CHECK (KING 

CAB)

1. Turn ignition switch OFF.

2. Disconnect main power window and door lock/unlock switch and

front door lock assembly LH (key cylinder switch).

3. Check continuity between main power window and door lock/

unlock switch connector (A) and front door lock assembly LH

(key cylinder switch) connector (B).

4. Check continuity between main power window and door lock/unlock switch connector (A) and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK DOOR KEY CYLINDER SWITCH GROUND CIRCUIT

Check continuity between front door lock assembly LH (key cylinder

switch) connector and ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair or replace harness.

4.

 CHECK DOOR KEY CYLINDER SWITCH

Check door key cylinder switch.

Refer to 

PWC-52, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-42, "Intermittent Incident"

.

NO

>> Replace front door lock assembly LH (key cylinder switch). 

Component Inspection

INFOID:0000000009878998

COMPONENT INSPECTION

1.

 CHECK DOOR KEY CYLINDER SWITCH

Main power window 

and door lock/unlock 

switch connector

Terminal

Front door lock as-

sembly LH (key cylin-
der switch) connector

Terminal

Continuity

D15 (A)

6

D14 (B)

1

Yes

7

6

Main power window and door 

lock/unlock switch connector

Terminal

Ground

Continuity 

D15 (A)

6

No

7

AWKIA0060ZZ

Front door lock assembly LH (key 

cylinder switch) connector

Terminal

Ground

Continuity 

D14

5

Yes

LIIA1572E