Nissan Pathfinder (2012 year). Manual - part 144

U1010 CONTROL UNIT (CAN)

DLK-47

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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U1010 CONTROL UNIT (CAN)

DTC Logic

INFOID:0000000007355402

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000007355403

1.

REPLACE BCM

When DTC [U1010] is detected, replace BCM. Refer to 

BCS-53, "Removal and Installation"

.

>> Replace BCM.

Special Repair Requirement

INFOID:0000000007355404

1.

REQUIRED WORK WHEN REPLACING BCM

The BCM must be initialized when replaced. Refer to (Body Control System) for BCM configuration.

Initialize NVIS by CONSULT. For the details of initialization, refer to CONSULT Immobilizer mode and follow

the on-screen instructions.

>> Work End.

DTC

CONSULT display de-

scription

DTC Detection Condition

Possible cause

U1010

CONTROL UNIT (CAN)

BCM detected internal CAN communication circuit malfunction.

BCM

2012 Pathfinder

DLK-48

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

INSTRUMENT PANEL AREA ANTENNA

INSTRUMENT PANEL AREA ANTENNA

Description

INFOID:0000000007355405

Detects whether Intelligent Key is inside the vehicle.

Component Function Check

INFOID:0000000007355406

NOTE:

The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II

User Guide for additional information.

• Check Intelligent Key relative signal strength

• Confirm vehicle Intelligent Key antenna signal strength

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL

With CONSULT

1. Check “ANTENNA” in “Active Test” mode with CONSULT.

2. Touch “ROOM ANT1”.

3. When Intelligent Key is inside instrument panel area antenna detection area, hazard lamps flash.

Is the inspection result normal?

YES

>> Instrument panel area antenna is OK.

NO

>> Refer to 

DLK-48, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007355407

NOTE:

The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II

User Guide for additional information.

• Check Intelligent Key relative signal strength

• Confirm vehicle Intelligent Key antenna signal strength

Regarding Wiring Diagram information, refer to 

DLK-151, "Wiring Diagram"

.

1.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

1. Turn ignition switch OFF.

2. Check signal between Intelligent Key unit connector and ground with an oscilloscope.

Is the inspection result normal?

YES

>> Instrument panel area antenna is OK.

NO

>> GO TO 2

2.

CHECK INSIDE KEY ANTENNA

Test Item

Condition

Possible cause

ROOM ANT1

An excessive high or low voltage from inside 

antenna is sent to the Intelligent Key Unit

• Instrument panel area antenna
• Between Intelligent Key unit and instrument panel area 

antenna

Connector

Item

Terminals

Condition

Signal (V)

(Reference value)

(+)

(–)

M164

Intelligent 

Key unit

15

Ground

Ignition 
switch is 
pushed.

ALKIA0585ZZ

PIIB7441E

August 2012

2012 Pathfinder

2012 Pathfinder

INSTRUMENT PANEL AREA ANTENNA

DLK-49

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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1. Disconnect Intelligent Key unit connector and instrument panel area antenna connectors.

2. Check continuity between Intelligent Key unit harness connector (A) M164 terminals 15, 16 and instru-

ment panel area antenna harness connector (B) M68 terminals 1, 2.

3. Check continuity between Intelligent Key unit harness connector

(A) M164 terminals 15, 16 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness between Intelligent Key unit and instrument panel area antenna.

3.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

1. Replace instrument panel area antenna. (New antenna or other antenna)

2. Connect Intelligent Key unit connector.

3. Check signal between Intelligent Key unit connector and ground

with oscilloscope.

Is the inspection result normal?

YES

>> Replace instrument panel area antenna.

NO

>> Replace Intelligent Key unit. Refer to 

SEC-114, "Removal and Installation"

.

Intelligent Key 
unit connector

Terminals

Instrument panel 

area antenna con-

nector

Terminals

Continuity

A: M164

15

B: M68

1

Yes

16

2

Item

Connector

Terminals

Continuity

Intelligent Key 

unit

A: M164

15

Ground

No

16

ALKIA0586ZZ

Connector

Item

Terminals

Condition

Signal (V)

(Reference value)

(+)

(–)

M164

Intelligent 

Key unit

15

Ground

Ignition 
switch is 
pushed.

ALKIA0585ZZ

PIIB7441E

August 2012

2012 Pathfinder

2012 Pathfinder

DLK-50

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

CENTER CONSOLE AREA ANTENNA

CENTER CONSOLE AREA ANTENNA

Description

INFOID:0000000007355408

Detects whether Intelligent Key is inside the vehicle.

Component Function Check

INFOID:0000000007355409

NOTE:

The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II

User Guide for additional information.

• Check Intelligent Key relative signal strength

• Confirm vehicle Intelligent Key antenna signal strength

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL

With CONSULT

1. Check “ANTENNA” in “Active Test” mode with CONSULT.

2. Touch “ROOM ANT2”.

3. When Intelligent Key is inside center console area antenna detection area, hazard lamps flash.

Is the inspection result normal?

YES

>> Center console area antenna is OK.

NO

>> Refer to 

DLK-50, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007355410

NOTE:

The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II

User Guide for additional information.

• Check Intelligent Key relative signal strength

• Confirm vehicle Intelligent Key antenna signal strength

Regarding Wiring Diagram information, refer to 

DLK-151, "Wiring Diagram"

.

1.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

1. Turn ignition switch OFF.

2. Check signal between Intelligent Key unit connector and ground with an oscilloscope.

Is the inspection result normal?

YES

>> Center console area antenna is OK.

NO

>> GO TO 2

2.

CHECK INSIDE KEY ANTENNA

Test Item

Condition

Possible cause

ROOM ANT2

An excessive high or low voltage from inside 

antenna is sent to the Intelligent Key unit

• Center console area antenna
• Between Intelligent Key unit and center console area an-

tenna

Connector

Item

Terminals

Condition

Signal (V)

(Reference value)

(+)

(–)

M164

Intelligent 

Key unit

13

Ground

Ignition 
switch is 
pushed.

ALKIA0583ZZ

PIIB7441E

August 2012

2012 Pathfinder

2012 Pathfinder

CENTER CONSOLE AREA ANTENNA

DLK-51

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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1. Disconnect Intelligent Key unit connector and center console area antenna connectors.

2. Check continuity between Intelligent Key unit harness connector (A) M164 terminals 13, 14 and center

console area antenna harness connector (B) M212 terminals 1, 2.

3. Check continuity between Intelligent Key unit harness connector

(A) M164 terminals 13, 14 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness between Intelligent Key unit and center console area antenna.

3.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

1. Replace center console area antenna (New antenna or other antenna).

2. Connect Intelligent Key unit connector.

3. Check signal between Intelligent Key unit connector and ground

with oscilloscope.

Is the inspection result normal?

YES

>> Replace center console area antenna.

NO

>> Replace Intelligent Key unit. Refer to 

SEC-114, "Removal and Installation"

.

Intelligent Key 
unit connector

Terminals

Center console area 

antenna connector

Terminals

Continuity

A: M164

13

B: M212

1

Yes

14

2

Item

Connector

Terminals

Continuity

Intelligent Key 

unit

A: M164

13

Ground

No

14

ALKIA0584ZZ

Connector

Item

Terminals

Condition

Signal (V)

(Reference value)

(+)

(–)

M164

Intelligent 

Key unit

13

Ground

Ignition 
switch is 
pushed.

ALKIA0583ZZ

PIIB7441E

August 2012

2012 Pathfinder

2012 Pathfinder

DLK-52

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

LUGGAGE AREA ANTENNA

LUGGAGE AREA ANTENNA

Description

INFOID:0000000007355411

Detects whether Intelligent Key is inside the vehicle.

Component Function Check

INFOID:0000000007355412

NOTE:

The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II

User Guide for additional information.

• Check Intelligent Key relative signal strength

• Confirm vehicle Intelligent Key antenna signal strength

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL

With CONSULT

1. Check “ANTENNA” in “Active Test” mode with CONSULT.

2. Touch “ROOM ANT2”.

3. When Intelligent Key is inside luggage area antenna detection area, hazard lamps flash.

Is the inspection result normal?

YES

>> luggage area antenna is OK.

NO

>> Refer to 

DLK-52, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007355413

NOTE:

The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II

User Guide for additional information.

• Check Intelligent Key relative signal strength

• Confirm vehicle Intelligent Key antenna signal strength

Regarding Wiring Diagram information, refer to 

DLK-151, "Wiring Diagram"

.

1.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

1. Turn ignition switch OFF.

2. Check signal between Intelligent Key unit connector and ground with an oscilloscope.

Is the inspection result normal?

YES

>> Luggage area antenna is OK.

NO

>> GO TO 2

2.

CHECK INSIDE KEY ANTENNA

Test Item

Condition

Possible cause

ROOM ANT2

An excessive high or low voltage from inside 

antenna is sent to the Intelligent Key Unit

• Luggage area antenna
• Between Intelligent Key unit and luggage area antenna

Connector

Item

Terminals

Condition

Signal (V)

(Reference value)

(+)

(–)

M164

Intelligent 

Key unit

33

Ground

Ignition 
switch is 
pushed.

ALKIA0589ZZ

PIIB7441E

August 2012

2012 Pathfinder

2012 Pathfinder

LUGGAGE AREA ANTENNA

DLK-53

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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1. Disconnect Intelligent Key unit connector and luggage area antenna connectors.

2. Check continuity between Intelligent Key unit harness connector (A) M164 terminals 33, 34 and luggage

area antenna harness connector (B) B129 terminals 1, 2.

3. Check continuity between Intelligent Key unit harness connector

(A) M164 terminals 33, 34 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness between Intelligent Key unit and luggage area antenna.

3.

CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL

1. Replace luggage area antenna (New antenna or other antenna).

2. Connect Intelligent Key unit connector.

3. Check signal between Intelligent Key unit connector and ground

with oscilloscope.

Is the inspection result normal?

YES

>> Replace luggage area antenna.

NO

>> Replace Intelligent Key unit. Refer to 

SEC-114, "Removal and Installation"

.

Intelligent Key 
unit connector

Terminals

Luggage area an-

tenna connector

Terminals

Continuity

A: M164

33

B: B129

1

Yes

34

2

Item

Connector

Terminals

Continuity

Intelligent Key 

unit

A: M164

33

Ground

No

34

ALKIA0590ZZ

Connector

Item

Terminals

Condition

Signal (V)

(Reference value)

(+)

(–)

M164

Intelligent 

Key unit

33

Ground

Ignition 
switch is 
pushed.

ALKIA0589ZZ

PIIB7441E

August 2012

2012 Pathfinder

2012 Pathfinder

DLK-54

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

INTELLIGENT KEY UNIT
INTELLIGENT KEY UNIT : Diagnosis Procedure

INFOID:0000000007355414

Regarding Wiring Diagram information, refer to 

DLK-151, "Wiring Diagram"

.

1.

CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect Intelligent Key unit connector.

3. Check voltage between Intelligent Key unit harness connector

M164 terminals 6, 11 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace Intelligent Key power supply circuit.

2.

CHECK GROUND CIRCUIT

Check continuity between Intelligent Key unit harness connector

M164 terminal 12 and ground.

Is the inspection result normal?

YES

>> Power supply and ground circuits are OK.

NO

>> Repair or replace the Intelligent Key unit ground circuit.

BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis Procedure

INFOID:0000000007818270

Regarding Wiring Diagram information, refer to 

BCS-46, "Wiring Diagram"

.

1.

 CHECK FUSES AND FUSIBLE LINK

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

Is the fuse blown?

YES

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

Connector

Terminals

Ignition switch position

M164

(+)

(–)

OFF

ON

6

Ground

0V

Battery voltage

11

Battery voltage

Battery voltage

WIIA1171E

12 - Ground

: Continuity should exist.

WIIA1172E

Terminal No.

Signal name

Fuses and fusible link No.

57

Battery power supply

21 (10A)

70

G (50A)

11

Ignition ACC or ON

4 (10A)

38

Ignition ON or START

1 (10A)

August 2012

2012 Pathfinder

2012 Pathfinder