Nissan Altima L32. Manual - part 1339

SEC-506

< COMPONENT DIAGNOSIS >

[SEDAN WITHOUT INTELLIGENT KEY]

KEY SLOT ILLUMINATION

NO

>> Repair or replace key slot power supply circuit.

3.

CHECK KEY SLOT GROUND CIRCUIT

Check continuity between key slot connector and ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair or replace key slot ground circuit.

4.

CHECK KEY SLOT CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM and key slot connector.

3. Check continuity between BCM connector and key slot connec-

tor.

4. Check continuity between BCM connector and ground.

Is the inspection result normal?

YES

>> GO TO 5

NO

>> Repair or replace harness between BCM and key slot.

5.

CHECK KEY SLOT 

Refer to 

SEC-505, "Description"

.

Is the inspection result normal?

YES

>> GO TO 6

NO

>> Replace key slot. Refer to 

SEC-596, "Removal and Installation"

.

6.

CHECK INTERMITTENT INCIDENT 

Refer to 

GI-42, "Intermittent Incident"

.

>> Inspection End.

Key slot connec-

tor

Terminal

Ground

Continuity

M40

7

Yes

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BCM connector

Terminal

Key slot 

connector

Terminal

Continuity

A: M19

80

B: M40

6

Yes

BCM connector

Terminal

Ground

Continuity 

A: M19

80

No

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KEY CYLINDER SWITCH

SEC-507

< COMPONENT DIAGNOSIS >

[SEDAN WITHOUT INTELLIGENT KEY]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

KEY CYLINDER SWITCH

Description

INFOID:0000000004499204

For vehicles equipped with LH and RH anti-pinch system, 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. 

For vehicles equipped with LH anti-pinch system only, the front door lock assembly LH (key cylinder switch)

transmits the LOCK or UNLOCK signal directly to the BCM. 

Component Function Check

INFOID:0000000004499205

1.

CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL

Check KEY CYL UN-SW, KEY CYL UN-SW in “DATA MONITOR” mode for “POWER DOOR LOCK SYSTEM”

with CONSULT-III. Refer to 

DLK-231, "Work Flow"

.

Is the inspection result normal?

YES

>> Key cylinder switch is OK.

NO

>> Refer to 

DLK-306, "Diagnosis Procedure (With LH Anti-Pinch Only)"

.

Diagnosis Procedure

INFOID:0000000004499207

1.

CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL

1. Turn ignition switch ON.

2. Check voltage between BCM connector and ground.

Is the inspection result normal?

YES

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

PWC-186, "Removal and

Installation"

.

Monitor item

Condition

KEY CYL LK-SW

Lock

: ON

Neutral / Unlock

: OFF

KEY CYL UN-SW

Unlock

: ON

Neutral / Lock

: OFF

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Terminals

Key position

Voltage (V)

(Approx.)

(+)

(–)

BCM connector

Terminal 

M18

56

Ground

Lock

0

Neutral / Unlock

5

34

Unlock

0

Neutral / Lock

5

SEC-508

< COMPONENT DIAGNOSIS >

[SEDAN WITHOUT INTELLIGENT KEY]

KEY CYLINDER SWITCH

NO

>> GO TO 2

2.

CHECK DOOR KEY CYLINDER SWITCH GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect front door lock assembly LH (key cylinder switch) connector.

3. Check continuity between front door lock assembly LH (key cylinder switch) connector and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

CHECK DOOR KEY CYLINDER SIGNAL CIRCUIT

1. Disconnect BCM connector M18.

2. Check continuity between front door lock assembly LH (key cyl-

inder switch) connector and BCM connector M18.

3. Check continuity between front door lock assembly LH (key cyl-

inder 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 

SEC-508, "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). Refer to 

DLK-451, "FRONT DOOR

LOCK : Removal and Installation"

.

Component Inspection

INFOID:0000000004499208

COMPONENT INSPECTION

1.

CHECK DOOR KEY CYLINDER SWITCH

Front door lock assembly LH connector

Terminal

Ground

Continuity 

D10

4

Yes

Front door lock assembly LH 

connector

Terminal

BCM connector

Terminal

Continuity

A: D10

5

B: M18

34

Yes

6

56

Front door lock assem-

bly LH

connector

Terminal

Ground

Continuity 

A: D10

5

No

6

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KEY CYLINDER SWITCH

SEC-509

< COMPONENT DIAGNOSIS >

[SEDAN WITHOUT INTELLIGENT KEY]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

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). Refer to 

DLK-451, "FRONT DOOR

LOCK : Removal and Installation"

.

Terminal

Key position

Continuity

Front door lock assembly LH 

(key cylinder switch) connector

5 

4

Unlock

Yes

Neutral / Lock

No

6

Lock

Yes

Neutral / Unlock

No

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