Nissan Maxima. Manual — part 340

KEY CYLINDER SWITCH

DLK-79

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

Special Repair Requirement

INFOID:0000000009471656

1.

PERFORM INITIALIZATION PROCEDURE

Perform initialization procedure.

Refer to

DLK-12, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-

ment"

.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Check intermittent incident. Refer to

GI-41, "Intermittent Incident"

.

DLK-80

< DTC/CIRCUIT DIAGNOSIS >

UNLOCK SENSOR

UNLOCK SENSOR

Description

INFOID:0000000009471657

Detects door lock condition of driver door.

Component Function Check

INFOID:0000000009471658

1.

CHECK FUNCTION

With CONSULT

Check unlock sensor UNLK SEN

−DR in “Data Monitor” mode.

Is the inspection result normal?

YES

>> Unlock sensor is OK.

NO

>> Refer to

DLK-80, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009471659

Regarding Wiring Diagram information, refer to

DLK-161, "Wiring Diagram"

.

1.

CHECK UNLOCK SENSOR POWER SUPPLY

Check signal between BCM connector and ground with oscilloscope.

Is the inspection result normal?

YES

>> GO TO 6

NO

>> GO TO 2

Monitor item

Condition

UNLK SEN

−DR

Front door lock (driver side) LOCK : ON

Front door lock (driver side) UNLOCK : OFF

ALKIA0352ZZ

Terminals

Front door lock assembly

LH condition

Voltage (V)

(Approx.)

(+)

(–)

BCM connector

Terminal

M18

27

Ground

Locked

Unlocked

0

JPMIA0011GB

UNLOCK SENSOR

DLK-81

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

2.

CHECK UNLOCK SENSOR CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM and front door lock assembly LH connector.

3. Check continuity between BCM connector and front door lock assembly LH connector.

4. Check continuity between BCM connector and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness between BCM and front door lock assembly LH.

3.

CHECK UNLOCK SENSOR GROUND CIRCUIT

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

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair or replace harness.

4.

CHECK BCM OUTPUT SIGNAL

1. Connect BCM harness connector.

2. Check signal between BCM connector and ground with oscillo-

scope.

Is the inspection result normal?

YES

>> GO TO 5

NO

>> Replace BCM. Refer to

BCS-79, "Removal and Installation"

5.

CHECK UNLOCK SENSOR

Refer to

DLK-82, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6

NO

>> Replace front door lock assembly LH. Refer to

DLK-221, "FRONT DOOR LOCK : Removal and

Installation"

.

6.

CHECK INTERMITTENT INCIDENT

BCM connector

Terminal

Front door lock assem-

bly LH connector

Terminal

Continuity

M18

27

D10

3

Yes

BCM connector

Terminal

Ground

Continuity

M18

27

No

Front door lock assembly

LH connector

Terminal

Ground

Continuity

D10

4

Yes

Terminals

Voltage (V)

(Approx.)

(+)

(–)

BCM connector

Terminal

M18

27

Ground

ALKIA0354ZZ

JPMIA0011GB

DLK-82

< DTC/CIRCUIT DIAGNOSIS >

UNLOCK SENSOR

Refer to

GI-41, "Intermittent Incident"

.

>> Inspection End.

Component Inspection

INFOID:0000000009471660

1.

CHECK UNLOCK SENSOR

Check unlock sensor.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace front lock assembly LH. Refer to

DLK-221, "FRONT DOOR LOCK : Removal and Instal-

lation"

.

Terminal

Front door lock assembly LH

condition

Continuity

Front door lock assembly LH

3

4

Unlock

Yes

Lock

No