Nissan Cube. Manual - part 845

P1611 ID DISCORD, IMMU-ECM

SEC-191

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

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P1611 ID DISCORD, IMMU-ECM

Description

INFOID:0000000009950256

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

DTC Logic

INFOID:0000000009950257

DTC DETECTION LOGIC

NOTE:
• If DTC P1611 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-40, "DTC Logic"

.

• If DTC P1611 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-41, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Check “Self diagnosis result” with CONSULT.

Is DTC detected?

YES

>> Refer to 

SEC-191, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009950258

1.

PERFORM INITIALIZATION

Perform initialization of BCM and registration of all ignition keys using CONSULT.
Can the system be initialized and can the engine be started with registered ignition key?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE BCM

1.

Replace BCM. Refer to 

BCS-88, "Removal and Installation"

.

2.

Perform initialization of BCM and registration of all ignition keys using CONSULT.

Can the system be initialized and can the engine be started with registered ignition key?

YES

>> INSPECTION END

NO

>> GO TO 3.

3.

REPLACE ECM

Replace ECM. Refer to 

SEC-178, "ECM : Special Repair Requirement"

.

Can the system be initialized and can the engine be started with registered ignition key?

YES

>> INSPECTION END

NO

>> GO TO 4.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1611

ID DISCORD IMMU-ECM

The ID verification results between BCM and ECM are NG.

• BCM
• ECM

SEC-192

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

P1612 CHAIN OF ECM-IMMU

P1612 CHAIN OF ECM-IMMU

Description

INFOID:0000000009950259

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:0000000009950260

DTC DETECTION LOGIC

NOTE:
• If DTC P1612 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

BCS-40, "DTC Logic"

.

• If DTC P1612 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

BCS-41, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Check “Self diagnosis result” with CONSULT.

Is DTC detected?

YES

>> Refer to 

SEC-192, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009950261

1.

REPLACE BCM

1.

Replace BCM. Refer to 

BCS-88, "Removal and Installation"

.

2.

Perform initialization of BCM and registration of all ignition keys using CONSULT.

Does the engine start?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE ECM

Replace ECM. Refer to 

SEC-178, "ECM : Special Repair Requirement"

.

>> INSPECTION END

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1612

CHAIN OF ECM-IMMU

Inactive communication between ECM and BCM

• Harness or connectors

(The CAN communication line is 
open or short)

• BCM
• ECM

P1614 CHAIN OF IMMU-KEY

SEC-193

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

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P1614 CHAIN OF IMMU-KEY

Description

INFOID:0000000009950262

Performs ID verification through BCM and NATS antenna amp. when ignition switch is ON position.
Prohibits the start of engine when an unregistered ID of ignition key is used.

DTC Logic

INFOID:0000000009950263

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Insert ignition key into the key cylinder.

2.

Turn ignition switch ON.

3.

Check “Self diagnosis result” with CONSULT.

Is DTC detected?

YES

>> Refer to 

SEC-193, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009950264

1.

CHECK FUSE

Check that the following IPDM E/R fuse is not blown.

Is the fuse fusing?

YES

>> Is the blown fuse after repairing the affected circuit if a fuse is blown.

NO

>> GO TO 2.

2.

CHECK NATS ANTENNA AMP. INSTALLATION

Check NATS antenna amp. Installation. Refer to 

SEC-197, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Reinstall NATS antenna amp. correctly.

3.

CHECK IGNITION KEY

Start engine with another registered ignition key.
Does the engine start?

YES

>> Replace ignition key, then perform initialization of BCM and registration of all ignition keys using

CONSULT.

NO

>> GO TO 4.

4.

CHECK NATS ANTENNA AMP. POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect NATS antenna amp. connector.

3.

Check voltage between NATS antenna amp. harness connector and ground.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

P1614

NATS ANTENNA AMP.

• Inactive communication between NATS antenna 

amp. and BCM

• Ignition key is malfunctioning

• Harness or connectors

(The NATS antenna amp. circuit is 
open or short)

• Ignition key
• NATS antenna amp.
• BCM

Signal name

Fuse No.

Battery power supply

43

SEC-194

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT INTELLIGENT KEY SYSTEM]

P1614 CHAIN OF IMMU-KEY

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

CHECK NATS ANTENNA AMP. POWER SUPPLY CIRCUIT

1.

Disconnect IPDM E/R connector.

2.

Check continuity between IPDM E/R harness connector and NATS antenna amp. connector.

3.

Check continuity between IPDM E/R harness connector and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-64, "Removal and Installation"

.

NO

>> Repair or replace harness.

6.

CHECK NATS ANTENNA AMP. GROUND CIRCUIT

Check continuity between NATS antenna amp. harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace harness.

7.

CHECK NATS ANTENNA AMP. SIGNAL

1.

Connect BCM connector and NATS antenna amp. connector.

2.

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 8.

8.

CHECK NATS ANTENNA AMP. SIGNAL CIRCUIT

(+)

(–)

Voltage (V)

(Approx.)

NATS antenna amp.

Connector

Terminal

M26

1

Ground

Battery voltage

IPDM E/R

NATS antenna amp.

Continuity

Connector

Terminal

Connector

Terminal

E14

45

M26

1

Existed

IPDM E/R

Ground

Continuity

Connector

Terminal

E14

45

Not existed

NATS antenna amp.

Ground

Continuity

Connector

Terminal

M26

3

Existed

(+)

(

−

)

Condition

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M65

21

Ground

Just after inserting ignition key in key cylinder

Pointer of tester should 
move

Other than above

0

25

Just after inserting ignition key in key cylinder

Pointer of tester should 
move

Other than above

0