Infiniti FX35, FX50 (S51). Manual — part 1655

U1010 CONTROL UNIT (CAN)

SEC-33

< DTC/CIRCUIT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

U1010 CONTROL UNIT (CAN)

BCM

BCM : DTC Logic

INFOID:0000000005249420

DTC DETECTION LOGIC

BCM : Diagnosis Procedure

INFOID:0000000005249421

1.

REPLACE BCM

When DTC “U1010” is detected, replace BCM.

>> Replace BCM. Refer to

BCS-83, "Exploded View"

.

DTC

CONSULT-III display de-

scription

DTC Detection Condition

Possible cause

U1010

CONTROL UNIT(CAN)

BCM detected internal CAN communication circuit malfunction.

BCM

SEC-34

< DTC/CIRCUIT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

P1610 LOCK MODE

P1610 LOCK MODE

Description

INFOID:0000000005249422

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 Intelligent Key is used.
• BCM or ECM is malfunctioning.

DTC Logic

INFOID:0000000005249423

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to

SEC-34, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005249424

1.

CHECK ENGINE START FUNCTION

1.

Perform the check for DTC except DTC P1610.

2.

Use CONSULT-III to erase DTC after fixing.

3.

Turn ignition switch OFF.

4.

Turn ignition switch ON when registered Intelligent Key insert into key slot and wait for 5 seconds.

5.

Turn the ignition switch OFF and wait 5 seconds.

6.

Repeat steps 4 and 5 twice (total of 3 cycles).

7.

Check that engine can start when registered Intelligent Key is inserted into key slot.

>> 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 Intelligent Key
• BCM or ECM is malfunctioning.

—

P1611 ID DISCORD, IMMU-ECM

SEC-35

< DTC/CIRCUIT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

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P1611 ID DISCORD, IMMU-ECM

Description

INFOID:0000000005249425

BCM performs the ID verification with ECM that allows the engine to start. Start the engine if the ID is OK.
ECM prevents the engine from starting if the ID is not registered. BCM starts the communication with ECM if
ignition switch is turned ON.

DTC Logic

INFOID:0000000005249426

DTC DETECTION LOGIC

NOTE:
• If DTC B1611 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to

SEC-31, "BCM : DTC Logic"

.

• If DTC B1611 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to

SEC-33, "BCM : DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON under the following conditions.

-

Selector lever is in the P or N position.

-

Do not depress brake pedal.

2.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to

SEC-35, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005249427

1.

PERFORM INITIALIZATION

Perform initialization with CONSULT-III. Reregister all Intelligent Keys.
For initialization and registration of Intelligent Key. Refer to “CONSULT-III Operation Manual NATS-IVIS/
NVIS”.

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

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE BCM

1.

Replace BCM. Refer to

BCS-83, "Removal and Installation"

.

2.

Perform initialization with CONSULT-III.
For initialization, refer to “CONSULT-III Operation Manual NATS-IVIS/NVIS”.

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

YES

>> INSPECTION END

NO

>> GO TO 3.

3.

REPLACE ECM

1.

Replace ECM. Refer to

EC-20, "BASIC INSPECTION : Special Repair Requirement"

(VQ35HR),

EC-576,

"BASIC INSPECTION : Special Repair Requirement"

(VK50VE).

2.

Perform initialization.
For initialization, refer to “CONSULT-III Operation Manual NATS-IVIS/NVIS”.

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

YES

>> 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. The registration is necessary.

• BCM
• ECM

SEC-36

< DTC/CIRCUIT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

P1611 ID DISCORD, IMMU-ECM

NO

>> GO TO 4.

4.

CHECK INTERMITTENT INCIDENT

Refer to

GI-36, "Intermittent Incident"

.

>> INSPECTION END