Nissan Pathfinder. Manual - part 349

DLK-162

< DTC/CIRCUIT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

AUTOMATIC BACK DOOR CONTROL UNIT
AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis Procedure

INFOID:0000000009175701

Regarding Wiring Diagram information, refer to 

DLK-74, "Wiring Diagram"

.

1.

CHECK FUSIBLE LINK

Check that the following fusible link is not open.

Is the fusible link open?

YES

>> Replace the open fusible link after repairing the affected circuit.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect automatic back door control module connector.

3. Check voltage between automatic back door control module harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK GROUND CIRCUIT

Check continuity between automatic back door control module harness connector and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair or replace harness.

BCM
BCM : Diagnosis Procedure

INFOID:0000000009764017

Regarding Wiring Diagram information, refer to 

BCS-55, "Wiring Diagram"

.

1.

 CHECK FUSE AND FUSIBLE LINK

Check that the following fuse and fusible link are not blown.

Fusible link No.

Signal name

N (40A)

Battery power supply

(+)

(

−)

Voltage

Automatic back door control module

Connector

Terminal

B56

25

Ground

Battery voltage

Automatic back door control module

Ground

Continuity

Connector

Terminal

B56

32

Yes

28

POWER SUPPLY AND GROUND CIRCUIT

DLK-163

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

Is the fuse or fusible link blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2

2.

 CHECK POWER SUPPLY CIRCUIT

1. Disconnect BCM connector M81.

2. Check voltage between BCM connector M81 terminals 131, 139 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness or connectors.

3.

 CHECK GROUND CIRCUIT

Check continuity between BCM connector M81 terminals 134, 143 and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair or replace harness or connectors.

Terminal No.

Signal name

Fuse and fusible link No.

139

Fusible link battery power

O (40A)

131

BCM battery fuse

1 (10A)

BCM

Ground

Voltage

(Approx.)

Connector

Terminal

M81

131

—

Battery voltage

139

BCM

Ground

Continuity

Connector

Terminal

M81

134

—

Yes

143

DLK-164

< DTC/CIRCUIT DIAGNOSIS >

OUTSIDE KEY ANTENNA (PASSENGER SIDE)

OUTSIDE KEY ANTENNA (PASSENGER SIDE)

Component Function Check

INFOID:0000000009175703

1.

CHECK OUTSIDE KEY ANTENNA (PASSENGER SIDE)

1. Place the Intelligent Key into the detection area of the outside key antenna (passenger side).

2. Press the door request switch (passenger side).
Does the door unlock?

YES

>> Inspection End.

NO

>> Refer to 

DLK-164, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009175704

Regarding Wiring Diagram information, refer to 

DLK-74, "Wiring Diagram"

.

1.

CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 1

1. Turn ignition switch OFF.

2. Check signal between BCM harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-80, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK OUTSIDE KEY ANTENNA CIRCUIT

1. Disconnect BCM connector and outside key antenna (passenger side) connector.

2. Check continuity between BCM harness connector and outside key antenna (passenger side) harness

connector.

3. Check continuity between BCM harness connector and ground.

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M80

114, 115

Ground

When the driver door 
request switch is op-
erated with ignition 
switch OFF

When Intelligent Key 
is in the antenna de-
tection area (The dis-
tance between 
Intelligent Key and 
antenna: 80 cm or 
less)

When Intelligent Key 
is not in the antenna 
detection area (The 
distance between In-
telligent Key and an-
tenna: Approx. 2 m)

JMKIA5955GB

JMKIA5954GB

BCM

Outside key antenna (passenger side)

Continuity 

Connector

Terminal

Connector

Terminal

M80

114

D115

1

Yes

115

2

OUTSIDE KEY ANTENNA (PASSENGER SIDE)

DLK-165

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

DLK

N

O

P

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 2

1. Replace outside key antenna (passenger side). (New antenna or other antenna)

2. Connect BCM connector and outside key antenna (passenger side) connector.

3. Check signal between BCM harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> Replace outside key antenna (passenger side). Refer to 

DLK-316, "PASSENGER SIDE :

Removal and Installation"

.

NO

>> Replace BCM. Refer to 

BCS-80, "Removal and Installation"

.

BCM

Ground

Continuity 

Connector

Terminal

M80

114

No

115

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M80

114, 115

Ground

When the driver door 
request switch is op-
erated with ignition 
switch OFF

When Intelligent Key 
is in the antenna de-
tection area (The dis-
tance between 
Intelligent Key and 
antenna: 80 cm or 
less)

When Intelligent Key 
is not in the antenna 
detection area (The 
distance between In-
telligent Key and an-
tenna: Approx. 2 m)

JMKIA5955GB

JMKIA5954GB