Infiniti G35 (V35) Sedan. Manual - part 349

U1010 CONTROL UNIT (CAN)

DLK-57

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

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U1010 CONTROL UNIT (CAN)

DTC Logic

INFOID:0000000000961123

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000000961124

1.

REPLACE BCM

When DTC [U1010] is detected, replace BCM.

>> Replace BCM.

Special Repair Requirement

INFOID:0000000000961125

1.

REQUIRED WORK WHEN REPLACING BCM

Initialize IVIS by CONSULT-III. For the details of initialization 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

DLK-58

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

B2621 INSIDE KEY ANTENNA 1

B2621 INSIDE KEY ANTENNA 1

Description

INFOID:0000000000961126

Detects whether Intelligent Key is inside the vehicle.
Installed in the instrument center.

DTC Logic

INFOID:0000000000961127

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

 With CONSULT-III

1.

Perform inside key antenna (“INSIDE ANT DIAGNOSIS”) on Work Support” of “INTELLIGENT KEY”.

2.

Perform “INTELLIGENT KEY”  Self Diagnostic Result.

Is inside key antenna DTC detected?

YES

>> Refer to 

DLK-58, "Diagnosis Procedure"

.

NO

>> Inside key antenna (instrument center) is OK.

Diagnosis Procedure

INFOID:0000000000961128

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

1.

Turn ignition switch OFF.

2.

Check signal between BCM connector and ground with oscilloscope.

Is the inspection result normal?

YES

>> Check the condition of harness and connector.

NO

>> GO TO 2.

2.

CHECK INSIDE KEY ANTENNA CIRCUIT

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2621

INSIDE ANTENNA 1 
CIRCUIT

An excessive high or low voltage from inside anten-
na is sent to BCM.

• Inside key antenna (instrument 

center)

• Between BCM and Inside key an-

tenna (instrument center)

Terminals

Condition

Signal

(Reference value.)

(+)

(–)

BCM connector

Terminal

M122

Instrument cen-

ter

79

Ground

Place Intelligent Key inside the 
vehicle.

Place Intelligent Key outside 
the vehicle. 

JMKIA0062GB

JMKIA0063GB

B2621 INSIDE KEY ANTENNA 1

DLK-59

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

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1.

Disconnect BCM and inside key antenna connector.

2.

Check continuity between BCM connector and inside key antenna connector.

3.

Check continuity between BCM connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness between BCM and inside key antenna.

3.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 2

1.

Replace inside key antenna (instrument center). (New antenna or other antenna)

2.

Connect BCM and inside key antenna (instrument center) connector.

3.

Check signal between BCM connector and ground with oscilloscope.

Is the inspection result normal?

YES

>> Replace inside key antenna (instrument center). Refer to 

DLK-219, "INSTRUMENT CENTER :

Removal and Installation"

.

NO

>> Replace BCM. Refer to 

BCS-79, "Removal and Installation"

.

BCM connector

Terminal

Inside key antenna connector

Terminal

Continuity 

M122

78

M131

Instrument center

2

Existed

79

1

BCM connector

Terminal

Ground

Continuity 

M122

Instrument center

78

Not existed

79

Terminals

Condition

Signal

(Reference value.)

(+)

(–)

BCM connector

Terminal

M122

Instrument cen-

ter

79

Ground

Place Intelligent Key inside the 
vehicle.

Place Intelligent Key outside 
the vehicle. 

JMKIA0062GB

JMKIA0063GB

DLK-60

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

B2622 INSIDE KEY ANTENNA 2

B2622 INSIDE KEY ANTENNA 2

Description

INFOID:0000000000961129

Detects whether Intelligent Key is inside the vehicle.
Installed in the console.

DTC Logic

INFOID:0000000000961130

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

 With CONSULT-III

1.

Perform inside key antenna (“INSIDE ANT DIAGNOSIS”) on “Work Support” of “INTELLIGENT KEY”.

2.

Perform “INTELLIGENT KEY”  Self Diagnostic Result.

Is inside key antenna DTC detected?

YES

>> Refer to 

DLK-60, "Diagnosis Procedure"

.

NO

>> Inside key antenna (console) is OK.

Diagnosis Procedure

INFOID:0000000000961131

1.

CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

1.

Turn ignition switch OFF.

2.

Check signal between BCM connector and ground with oscilloscope.

Is the inspection result normal?

YES

>> Check the condition of harness and connector.

NO

>> GO TO 2.

2.

CHECK INSIDE KEY ANTENNA CIRCUIT

1.

Disconnect BCM and inside key antenna (console) connector.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2622

INSIDE ANTENNA 2 
CIRCUIT

An excessive high or low voltage from inside anten-
na is sent to BCM.

• Inside key antenna (console)
• Between BCM

∼

Inside key anten-

na (console)

Terminals

Condition

Signal

(Reference value.)

(+)

(–)

BCM connector

Terminal

M122

Console

73

Ground

Place Intelligent Key inside the 
vehicle.

Place Intelligent Key outside the 
vehicle. 

JMKIA0062GB

JMKIA0063GB