Nissan Pathfinder. Manual - part 1057

B2190 NATS ANTENNA AMP.

SEC-91

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK NATS ANTENNA AMP INPUT SIGNAL 1

1. Turn ignition switch ON.

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

>> Replace NATS antenna amp. Refer to 

SEC-144, "Removal and Installation"

.

BCM

Ground

Continuity 

Connector

Terminal

M80

126

No

127

(+)

(–)

Condition

Signal

(Reference value)

BCM

Connector

Terminal

M80

126, 127

Ground

When Intelligent Key is in the 
antenna detection area

When Intelligent Key is not in 
the antenna detection area

JMKIA3839GB

JMKIA5951GB

SEC-92

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2191, P1615 DIFFERENCE OF KEY

B2191, P1615 DIFFERENCE OF KEY

Description

INFOID:0000000009175998

Performs ID verification through BCM and Intelligent Key when push-button ignition switch is pressed.

Prohibits starting of the engine when an unregistered ID of Intelligent Key is used.

DTC Logic

INFOID:0000000009175999

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Place the back side of the Intelligent Key up to the push-button ignition switch.

2. Press the push-button ignition switch.

3. Check “Self-Diagnostic Result” with CONSULT.
Is DTC detected?

YES

>> Refer to 

SEC-92, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009176000

1.

PERFORM INITIALIZATION

Perform initialization with CONSULT. Re-register all Intelligent Keys.

For initialization and registration of Intelligent Key, refer to CONSULT Immobilizer mode and follow the on-

screen instructions.
Can the system be initialized and can the engine be started with re-registered Intelligent Key?

YES

>> Intelligent Key was unregistered.

NO

>> Intelligent Key fob is malfunctioning.

• Replace Intelligent Key fob. 

• Perform initialization again.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2191

DIFFERENCE OF 
KEY

The ID verification results between BCM and Intel-
ligent Key are NG. The registration is necessary.

• Intelligent Key 

P1615

B2192 ID DISCORD, IMMU-ECM

SEC-93

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

B2192 ID DISCORD, IMMU-ECM

DTC Logic

INFOID:0000000009176001

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check DTC in “Self-Diagnostic Result” mode of “BCM” using CONSULT.
Is DTC detected?

YES

>> GO TO  

SEC-93, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009176002

1.

PERFORM INITIALIZATION

Perform initialization of BCM and reregistration of all Intelligent Keys using CONSULT. Refer to the CONSULT

Immobilizer mode and follow the on-screen instructions.
Can the system be initialized and can the engine be started with reregistered Intelligent Key?

YES

>> Inspection End.

NO

>> GO TO 2.

2.

CHECK SELF-DIAGNOSIS RESULT

1. Select “Self Diagnostic Result” mode of “BCM” using CONSULT.

2. Erase DTC.

3. Perform DTC CONFIRMATION PROCEDURE for DTC B2192. Refer to 

SEC-93, "DTC Logic"

.

Is DTC detected?

YES

>> GO TO 3.

NO

>> Inspection End.

3.

REPLACE BCM

1. Replace BCM. Refer to 

BCS-80, "Removal and Installation"

.

2. Perform initialization of BCM and reregistration of all Intelligent Keys using CONSULT. Refer to the CON-

SULT Immobilizer mode and follow the on-screen instructions.

Can the system be initialized and can the engine be started with registered Intelligent Key?

YES

>> Inspection End.

NO

>> GO TO 4.

4.

REPLACE ECM

1. Replace ECM. Refer to 

EC-466, "Removal and Installation"

.

2. Perform “ADDITIONAL SERVICE WHEN REPLACING ECM”. Refer to 

EC-147, "Work Procedure"

.

>> Inspection End.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B2192

ID DISCORD BCM-ECM

The ID verification results between 
BCM and ECM are NG.

• Harness or connectors

(The CAN communication line is open 
or shorted.)

• BCM
• ECM

SEC-94

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2193 CHAIN OF ECM-IMMU

B2193 CHAIN OF ECM-IMMU

DTC Logic

INFOID:0000000009176003

DTC DETECTION LOGIC

NOTE:

• If DTC B2193 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-68, "DTC Logic"

.

• If DTC B2193 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-69, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check DTC in “Self-Diagnostic Result” mode of “BCM” using CONSULT.
Is DTC detected?

YES

>> GO TO  

SEC-94, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009176004

NOTE:

• If DTC B2193 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-68, "DTC Logic"

.

• If DTC B2193 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-69, "DTC Logic"

.

1.

CHECK BCM POWER SUPPLY AND GROUND CIRCUIT.

Check BCM power supply and ground circuit. Refer to 

BCS-74, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the harness.

2.

CHECK ECM POWER SUPPLY AND GROUND CIRCUIT.

Check ECM power supply and ground circuit. Refer to 

EC-173, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Replace ECM. Refer to 

EC-466, "Removal and Installation"

. GO TO 3.

NO

>> Repair or replace the harness.

3.

PERFORM DTC CONFIRMATION PROCEDURE.

Perform the DTC confirmation procedure. Refer to 

SEC-94, "DTC Logic"

.

Does the DTC return?

YES

>> Replace BCM. Refer to 

BCS-80, "Removal and Installation"

NO

>> Inspection End.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B2193

CHAIN OF BCM-ECM

Inactive communication between BCM 
and ECM

• Harness or connectors

(The CAN communication line is open or 
shorted.)

• ECM 
• BCM