Nissan Frontier D40. Manual - part 219

 

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Nissan Frontier D40. Manual - part 219

 

 

KEY CYLINDER SWITCH

DLK-39

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

KEY CYLINDER SWITCH

DRIVER SIDE

DRIVER SIDE : Description

INFOID:0000000005274514

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. 

DRIVER SIDE : Component Function Check

INFOID:0000000005274515

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 

DLK-39, "DRIVER SIDE : Diagnosis Procedure"

.

DRIVER SIDE : Diagnosis Procedure

INFOID:0000000005274516

Regarding Wiring Diagram information, refer to 

DLK-75, "Wiring Diagram—POWER DOOR LOCK SYSTEM

(King Cab)—"

 or 

DLK-84, "Wiring Diagram—POWER DOOR LOCK SYSTEM (Crew Cab)—"

.

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 in CONSULT–III. Refer to 

DLK-20, "DOOR LOCK : CONSULT-III Function (BCM -

DOOR LOCK)"

.

• 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 BCM connector M18 terminals 7, 8 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

Connector

Terminals

Condition

Voltage (V)

(Approx.)

(+)

(–)

M18

7

Ground

Neutral/Lock

5

Unlock

0

8

Neutral/Unlock

5

Lock

0

WIIA0457E

DLK-40

< COMPONENT DIAGNOSIS >

KEY CYLINDER SWITCH

Is the inspection result normal?

YES

>> Front door lock assembly LH (key cylinder switch) signal is OK.

NO

>> GO TO 2

2.

CHECK FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER SWITCH)

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 terminals 3, 4 and 5.

Is the inspection result normal?

YES

>> GO TO 3

NO

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

DLK-135, "Removal and

Installation"

.

3.

CHECK FRONT DOOR LOCK ASSEMBLY LH HARNESS

1.

Disconnect BCM.

2.

Check continuity between BCM connector M18 terminals 7, 8
and front door lock assembly LH connector D14 terminals 3, 5.

3.

Check continuity between BCM connector M18 terminals 7, 8
and ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair or replace harness.

4.

CHECK FRONT DOOR LOCK ASSEMBLY LH GROUND

Check continuity between front door lock assembly LH connector
D14 terminal 4 and ground.

Is the inspection result normal?

YES

>> GO TO 5

NO

>> Repair or replace harness.

5.

CHECK BCM OUTPUT VOLTAGE

1.

Connect BCM.

Terminals

Condition

Continuity

4 – 5

Key is turned to LOCK.

Yes

Key is in N position or turned to UN-

LOCK

No

3 – 4

Key is turned to UNLOCK.

Yes

Key is in N position or turned to LOCK

No

WIIA0458E

7 - 3

: Continuity should exist.

8 - 5

: Continuity should exist.

7 - Ground

: Continuity should not exist.

8 - Ground

: Continuity should not exist.

WIIA0676E

4 - Ground

: Continuity should exist.

WIIA0677E

KEY CYLINDER SWITCH

DLK-41

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

2.

Check voltage between BCM connector M18 terminals 7, 8 and
ground.

Is the inspection result normal?

YES

>> Check condition of the harness and connector.

NO

>> Replace BCM. Refer to 

BCS-54, "Removal and Installa-

tion"

.

7 - Ground

: Approx. 5V

8 - Ground

: Approx. 5V

WIIA0457E

DLK-42

< COMPONENT DIAGNOSIS >

KEY SWITCH (BCM INPUT)

KEY SWITCH (BCM INPUT)

Diagnosis Procedure

INFOID:0000000005274517

Regarding Wiring Diagram information, refer to 

DLK-75, "Wiring Diagram—POWER DOOR LOCK SYSTEM

(King Cab)—"

 or 

DLK-84, "Wiring Diagram—POWER DOOR LOCK SYSTEM (Crew Cab)—"

.

1.

CHECK KEY SWITCH INPUT SIGNAL

With CONSULT-III

Check key switch "KEY ON SW" in DATA MONITOR mode with CONSULT–III. Refer to 

DLK-20, "DOOR

LOCK : CONSULT-III Function (BCM - DOOR LOCK)"

.

• When key is inserted to ignition key cylinder:

• When key is removed from ignition key cylinder:

Without CONSULT-III

Check voltage between BCM connector M18 terminal 37 and
ground.

Is the inspection result normal?

YES

>> Key switch (insert) circuit is OK.

NO

>> GO TO 2

2.

CHECK KEY SWITCH (INSERT)

1.

Turn ignition switch OFF.

2.

Disconnect key switch connector.

3.

Check continuity between key switch terminals.

Is the inspection result normal?

YES

>> Repair or replace harness or fuse.

NO

>> Replace key switch.

KEY ON SW

: ON

KEY ON SW

: OFF

Connector

Terminal

Condition

Voltage (V)

(+)

(–)

M18

37

Ground

Key is inserted.

Battery voltage

Key is removed.

0

LIIA0567E

Terminals

Condition

Continuity

1 – 2

Key is inserted.

Yes

Key is removed.

No

WIIA0559E

 

 

 

 

 

 

 

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