Infiniti G37 Coupe. Manual - part 1135

U1010 CONTROL UNIT (CAN)

SEC-37

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

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U1010 CONTROL UNIT (CAN)

DTC Logic

INFOID:0000000001726789

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000001726790

1.

REPLACE BCM

When DTC [U1010] is detected, replace BCM.

>> Replace BCM.

Special Repair Requirement

INFOID:0000000001726791

1.

REQUIRED WORK WHEN REPLACING BCM

Initialize control unit. Refer to CONSULT-III operation manual NATS-IVIS/NVIS.

>> Work end.

DTC

CONSULT-III display de-

scription

DTC Detection Condition

Possible cause

U1010

CONTROL UNIT (CAN)

BCM detected internal CAN communication circuit malfunction.

BCM

SEC-38

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

P1610 LOCK MODE

P1610 LOCK MODE

Description

INFOID:0000000001700118

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's malfunctioning.

DTC Logic

INFOID:0000000001700119

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-38, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000001700120

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.

Return 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 insert 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's malfunctioning.

—

P1611 ID DISCORD, IMMU-ECM

SEC-39

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

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P1611 ID DISCORD, IMMU-ECM

Description

INFOID:0000000001699933

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:0000000001699934

DTC DETECTION LOGIC

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

SEC-36, "DTC Logic"

.

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

SEC-37, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON under the following conditions.

A/T models

-

A/T selector lever is in the P or N position

-

Do not depress brake pedal

M/T models

-

Do not depress clutch pedal

2.

Check “Self diagnostic result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

SEC-39, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000001726271

1.

PERFORM INITIALIZATION

Perform initialization with CONSULT-III. Re-register 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 re-registered Intelligent Key?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE BCM

1.

Replace BCM. Refer to 

BCS-79, "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 re-registered Intelligent Key?

YES

>> INSPECTION END

NO

>> GO TO 3.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

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-40

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

P1611 ID DISCORD, IMMU-ECM

>> INSPECTION END