Nissan Maxima. Manual - part 335

U1010 CONTROL UNIT (CAN)

DLK-59

< DTC/CIRCUIT DIAGNOSIS >

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U1010 CONTROL UNIT (CAN)

DTC Logic

INFOID:0000000009471625

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000009471626

1.

REPLACE BCM

When DTC [U1010] is detected, replace BCM.

>> Replace BCM. Refer to 

BCS-79, "Removal and Installation"

.

Special Repair Requirement

INFOID:0000000009471627

1.

REQUIRED WORK WHEN REPLACING BCM

Initialize NVIS by CONSULT. For the details of initialization refer to CONSULT Immobilizer mode and follow

the on-screen instructions.

>> Work end.

DTC

CONSULT display de-

scription

DTC Detection Condition

Possible cause

U1010

CONTROL UNIT (CAN)

BCM detected internal CAN communication circuit malfunction.

BCM

DLK-60

< DTC/CIRCUIT DIAGNOSIS >

B2622 INSIDE KEY ANTENNA 2

B2622 INSIDE KEY ANTENNA 2

Description

INFOID:0000000009471628

Detects whether Intelligent Key is inside the vehicle.

Installed under the center console.

DTC Logic

INFOID:0000000009471629

NOTE:

The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II

User Guide for additional information.

• Check Intelligent Key relative signal strength

• Confirm vehicle Intelligent Key antenna signal strength

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

 With CONSULT

1. Perform front console antenna INSIDE ANT DIAGNOSIS on “Work Support” of “INTELLIGENT KEY”.

2. Perform “INTELLIGENT KEY”  Self Diagnostic Result.
Is front console antenna DTC detected?

YES

>> Refer to 

DLK-60, "Diagnosis Procedure"

.

NO

>> Front console antenna is OK.

Diagnosis Procedure

INFOID:0000000009471630

NOTE:

The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II

User Guide for additional information.

• Check Intelligent Key relative signal strength

• Confirm vehicle Intelligent Key antenna signal strength

Regarding Wiring Diagram information, refer to 

DLK-161, "Wiring Diagram"

.

1.

CHECK FRONT CONSOLE ANTENNA INPUT SIGNAL 1

1. Turn ignition switch OFF.

2. Check signal between BCM connector and ground with oscillo-

scope.

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.

• Front console antenna
• Between BCM and front console 

antenna.

ALKIA0327ZZ

B2622 INSIDE KEY ANTENNA 2

DLK-61

< DTC/CIRCUIT DIAGNOSIS >

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Is the inspection result normal?

YES

>> Check the condition of harness and connector.

NO

>> GO TO 2

2.

CHECK FRONT CONSOLE ANTENNA CIRCUIT

1. Disconnect BCM and front console antenna connector.

2. Check continuity between BCM connector and front console 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 front console antenna.

3.

CHECK FRONT CONSOLE ANTENNA INPUT SIGNAL 2

1. Replace front console antenna (new antenna or other antenna).

2. Connect BCM and front console antenna connector.

Terminals

Condition

Signal

(Reference value.)

(+)

(–)

BCM connector

Terminal

M19

Front console

antenna

61

Ground

Place Intelligent Key inside the ve-
hicle.

Place Intelligent Key outside the 
vehicle. 

JMKIA0062GB

JMKIA0063GB

BCM connector

Terminal

Front console antenna 

connector

Terminal

Continuity 

M19

60

M41

Console

2

Yes

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1

BCM connector

Terminal

Ground

Continuity 

M19

Console

60

No

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DLK-62

< DTC/CIRCUIT DIAGNOSIS >

B2622 INSIDE KEY ANTENNA 2

3. Check signal between BCM connector and ground with oscillo-

scope.

Is the inspection result normal?

YES

>> Replace front console antenna. Refer to 

IP-21, "Disassembly and Assembly"

.

NO

>> Replace BCM. Refer to 

BCS-79, "Removal and Installation"

.

ALKIA0327ZZ

Terminals

Condition

Signal

(Reference value.)

(+)

(–)

BCM connector

Terminal

M19

Front console

antenna

61

Ground

Place Intelligent Key inside the ve-
hicle.

Place Intelligent Key outside the 
vehicle. 

JMKIA0062GB

JMKIA0063GB