Content .. 529 530 531 532 ..

Nissan Pathfinder (2012 year). Manual - part 531

B2192, P1611 ID DISCORD, IMMU-ECM

SEC-37

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

SEC

B2192, P1611 ID DISCORD, IMMU-ECM

Description

INFOID:0000000007355700

BCM performs the ID verification with ECM that allows the engine to start. BCM starts the communication with

ECM if ignition switch is turned ON and starts the engine if the ID is OK. ECM prevents the engine from start-

ing if the ID is not registered.

DTC Logic

INFOID:0000000007355701

DTC DETECTION LOGIC

NOTE:

• If DTC B2192 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

SEC-28, "DTC Logic"

• If DTC B2192 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

SEC-29, "DTC Logic"

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check “Self diagnostic result” with CONSULT.
Is DTC detected?

YES

>> Refer to

SEC-37, "Diagnosis Procedure"

>> Inspection End.

Diagnosis Procedure

INFOID:0000000007355702

PERFORM INITIALIZATION

Perform initialization with CONSULT. Re-register all mechanical keys.

For initialization and registration of mechanical 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 mechanical key?

YES

>> ID was unregistered.

>> GO TO 2

REPLACE BCM

1. Replace BCM. Refer to

BCS-53,"Removal and Installation’

2. Perform initialization with CONSULT. Re-register all mechanical keys.

For initialization and registration of mechanical 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 mechanical key?

YES

>> BCM is malfunctioning.

>> GO TO 3

REPLACE ECM

1. Replace ECM. Refer to Removal and Installation.

2. Perform initialization with CONSULT. Re-register all mechanical keys.

For initialization and registration of mechanical 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 mechanical key?

YES

>> ECM is malfunctioning.

>> GO TO 4

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. The registration is necessary.

• BCM
• ECM

P1611

2012 Pathfinder

SEC-38

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2192, P1611 ID DISCORD, IMMU-ECM

CHECK INTERMITTENT INCIDENT

Refer to

GI-37, "Intermittent Incident"

>> Inspection End.

2012 Pathfinder

B2193, P1612 CHAIN OF ECM-IMMU

SEC-39

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

SEC

B2193, P1612 CHAIN OF ECM-IMMU

Description

INFOID:0000000007355703

BCM performs the ID verification with ECM that allows the engine to start. BCM starts the communication with

ECM if ignition switch is turned ON and starts the engine if the ID is OK. ECM prevents the engine from start-

ing if the ID is not registered.

DTC Logic

INFOID:0000000007355704

DTC DETECTION LOGIC

NOTE:

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

SEC-28, "DTC Logic"

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

SEC-29, "DTC Logic"

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check “Self diagnostic result” with CONSULT.
Is DTC detected?

YES

>> Refer to

SEC-39, "Diagnosis Procedure"

>> Inspection End.

Diagnosis Procedure

INFOID:0000000007355705

REPLACE BCM

1. Replace BCM. Refer to

BCS-53,"Removal and Installation’

2. Perform initialization with CONSULT.

For initialization, refer to CONSULT Immobilizer mode and follow the on-screen instructions.

Does the engine start?

YES

>> BCM was malfunctioning.

>> ECM is malfunctioning.

• Replace ECM.

• Perform ECM re-communicating function.

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

B2193

CHAIN OF BCM-
ECM

Inactive communication between ECM and BCM

• Harness or connectors

(The CAN communication line is
open or short)

• BCM
• ECM

P1612

2012 Pathfinder

SEC-40

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2194 ID DISCORD IMMU-I-KEY

B2194 ID DISCORD IMMU-I-KEY

Description

INFOID:0000000007355706

BCM performs the ID verification with Intelligent Key unit that allows the engine to start. BCM starts the com-

munication with Intelligent Key unit if ignition switch is turned ON and starts the engine if the ID is OK. BCM

prevents the engine from starting if the ID is not registered.

DTC Logic

INFOID:0000000007355707

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check “Self diagnostic result” with CONSULT.
Is DTC detected?

YES

>> Refer to

SEC-40, "Diagnosis Procedure"

>> Inspection End.

Diagnosis Procedure

INFOID:0000000007355708

PERFORM INITIALIZATION

1. Perform initialization with CONSULT. Re-register all mechanical keys.

For initialization and registration of mechanical key. Refer to CONSULT Immobilizer mode and follow the

on-screen instructions.

2. Check “Self diagnostic result” with CONSULT.
Is DTC detected?

YES

>> GO TO 2

>> ID was unregistered.

REPLACE BCM

1. Turn ignition switch OFF.

2. Replace BCM. Refer to

BCS-53,"Removal and Installation’

3. Perform initialization with CONSULT. Re-register all mechanical keys.

For initialization and registration of mechanical key. Refer to CONSULT Immobilizer mode and follow the

on-screen instructions.

Can the system be initialized and can the engine be started?

YES

>> BCM is malfunctioning.

>> GO TO 3

CHECK INTERMITTENT INCIDENT

Refer to

GI-37, "Intermittent Incident"

>> Inspection End.

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

B2194

DISCORD BCM-I-
KEY

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

• BCM
• Intelligent Key unit

2012 Pathfinder

B2552 INTELLIGENT KEY

SEC-41

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

SEC

B2552 INTELLIGENT KEY

Description

INFOID:0000000007355709

Intelligent Key unit performs engine start operation and steering lock control by crosschecking ID with the

Intelligent Key.

DTC Logic

INFOID:0000000007355710

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check “Self diagnostic result” with CONSULT.
Is DTC detected?

YES

>> Refer to

SEC-41, "Diagnosis Procedure"

>> Inspection End.

Diagnosis Procedure

INFOID:0000000007355711

REPLACE INTELLIGENT KEY UNIT

1. Replace Intelligent Key unit.

2. Perform initialization with CONSULT. Re-register all mechanical keys. Refer to CONSULT Immobilizer

mode and follow the on-screen instructions.

3. Start the engine.
Does the engine start?

YES

>> Inspection End.

>> Perform “DTC confirmation procedure”. Refer to

SEC-41, "DTC Logic"

Special Repair Requirement

INFOID:0000000007355712

REQUIRED WORK WHEN REPLACING INTELLIGENT KEY UNIT

Initialize control unit. Refer to CONSULT Immobilizer mode and follow the on-screen instructions.

>> Inspection End.

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

B2552

INTELLIGENT KEY
UNIT

Malfunction is detected inside Intelligent
Key unit.

Intelligent Key unit

2012 Pathfinder

SEC-42

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2590 ID DISCORD BCM-I-KEY

B2590 ID DISCORD BCM-I-KEY

Description

INFOID:0000000007355713

Intelligent Key unit performs the ID verification with BCM that allows the engine to start. BCM starts the engine

if the ID is OK and prevents the engine from starting if the ID is not registered.

DTC Logic

INFOID:0000000007355714

DTC DETECTION LOGIC

NOTE:

• If DTC B2590 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

SEC-28, "DTC Logic"

• If DTC B2590 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

SEC-29, "DTC Logic"

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check “Self diagnostic result” with CONSULT.
Is DTC detected?

YES

>> Refer to

SEC-42, "Diagnosis Procedure"

>> Inspection End.

Diagnosis Procedure

INFOID:0000000007355715

PERFORM INITIALIZATION

Perform initialization with CONSULT. Re-register all mechanical keys.

For initialization and registration of mechanical 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 mechanical key?

YES

>> ID was unregistered.

>> BCM is malfunctioning.

• Replace BCM. Refer to

BCS-53,"Removal and Installation’

• Perform initialization again

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

B2590

ID DISCORD BCM-I-
KEY

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

• BCM
• Intelligent Key unit

2012 Pathfinder

P1610 LOCK MODE

SEC-43

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

SEC

P1610 LOCK MODE

Description

INFOID:0000000007355716

When the starting operation is carried more than five times consecutively under the following conditions, NATS

will shift to the mode which prevents the engine from being started.

• Unregistered mechanical key is used.

• BCM or ECM's malfunctioning.

DTC Logic

INFOID:0000000007355717

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Check “Self diagnostic result” with CONSULT.
Is DTC detected?

YES

>> Refer to

SEC-43, "Diagnosis Procedure"

>> Inspection End.

Diagnosis Procedure

INFOID:0000000007355718

CHECK ENGINE START FUNCTION

1. Perform the check for DTC except DTC P1610.

2. Use CONSULT to erase DTC after fixing.

3. Check that engine can start with registered mechanical key.
Does the engine start?

YES

>> Inspection End.

>> GO TO 2

CHECK INTERMITTENT INCIDENT

Refer to

GI-37, "Intermittent Incident"

>> Inspection End.

DTC No.

Trouble diagnosis

name

DTC detecting condition

Possible cause

P1610

LOCK MODE

When the starting operation is carried out
five or more times consecutively under the
following conditions.
• Unregistered mechanical key
• BCM or ECM's malfunctioning.

—

August 2012

2012 Pathfinder

SEC-44

< 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:0000000007818261

Regarding Wiring Diagram information, refer to

DLK-151, "Wiring Diagram"

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.

>> Repair or replace Intelligent Key power supply circuit.

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.

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

BCM
BCM : Diagnosis Procedure

INFOID:0000000007818230

Regarding Wiring Diagram information, refer to

BCS-46, "Wiring Diagram"

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

Ground

Battery voltage

WIIA1171E

12 - Ground

: Continuity should exist.

WIIA1172E

Terminal No.

Signal name

Fuses and fusible link No.

Battery power supply

21 (10A)

G (50A)

Ignition ACC or ON

4 (10A)

Ignition ON or START

1 (10A)

August 2012

2012 Pathfinder

Content .. 529 530 531 532 ..