Nissan Murano Z51. Manual - part 389

DLK-64

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

U1000 CAN COMM CIRCUIT

1.

Turn ignition switch ON and wait for 2 seconds or more.

2.

Check “Self Diagnostic Result”.

Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to 

LAN-17, "Trouble Diagnosis Flow Chart"

.

NO

>> Refer to 

GI-39, "Intermittent Incident"

.

U1010 CONTROL UNIT (CAN)

DLK-65

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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U1010 CONTROL UNIT (CAN)

BCM

BCM : DTC Logic

INFOID:0000000005517476

DTC DETECTION LOGIC

BCM : Diagnosis Procedure

INFOID:0000000005517477

1.

REPLACE BCM

When DTC [U1010] is detected, replace BCM.

>> Replace BCM. Refer to 

BCS-95, "Removal and Installation"

BCM : Special Repair Requirement

INFOID:0000000005517478

1.

REQUIRED WORK WHEN REPLACING BCM

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

>> Work end.

AUTOMATIC BACK DOOR CONTROL UNIT

AUTOMATIC BACK DOOR CONTROL UNIT : DTC Logic

INFOID:0000000005517479

DTC DETECTION LOGIC

AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis Procedure

INFOID:0000000005517480

1.

REPLACE BCM

When DTC [U1010] is detected, replace automatic back door control unit.

>> Replace automatic back door control unit. Refer to 

DLK-370, "Removal and Installation"

.

DTC

CONSULT-III display de-

scription

DTC Detection Condition

Possible cause

U1010

CONTROL UNIT (CAN)

BCM detected internal CAN communication circuit malfunction.

BCM

DTC

CONSULT-III dis-

play description

DTC Detection Condition

Possible cause

U1010

CONTROL UNIT 
(CAN)

Automatic back door control unit detected inter-
nal CAN communication circuit malfunction

Automatic back door control unit

DLK-66

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

B2401 IGNITION POWER SUPPLY CIRCUIT

B2401 IGNITION POWER SUPPLY CIRCUIT

Description

INFOID:0000000005517481

Automatic back door control unit receive ignition power supply condition signal from BCM via CAN communi-
cation, and compare the signal with ignition power supply condition of automatic back door control unit to
detect inflammation.

DTC Logic

INFOID:0000000005517482

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait for at least 1 second.

2.

Check “Self Diagnostic Result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

DLK-66, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005517483

1.

CHECK FUSE, FUSIBLE LINK AND CIRCUIT BREAKER

Check that the following fuse, fusible link and circuit breaker are not fusing.

Is the fuse fusing?

YES

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

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect automatic back door control unit connector.

3.

Check voltage between automatic back door control unit harness connector and ground.

Is the measurement value normal?

YES

>> INSPECTION END

NO

>> Repair or replace harness.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2401

IGNITION POWER 
SUPPLY CIRCUIT

When the automatic power back door control unit 
detects the following condition for 0.3 second or 
more
• Power supply condition (OFF) of automatic back 

door unit and Ignition position signal (ON) from 
BCM via CAN

• Fuse
• Harness or connectors

(Ignition power supply condition 
circuit is open or shorted)

Fuse No.

Signal name

3

Ignition power supply

(+)

(

−

)

Condition

Voltage

(Approx.)

Automatic back door control unit

Connector

Terminal

B8

9

Ground

Ignition switch

ON

Battery voltage

B2403 ENCODER

DLK-67

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

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B2403 ENCODER

Description

INFOID:0000000005517484

The automatic back door control unit receives the pulse signals from encoders A and B that occurred due to
synchronization with the back door operation. The automatic back door control unit calculates the back door
position, operation direction, and operation speed according to the received pulse signals.

DTC Logic

INFOID:0000000005517485

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON. 

2.

Operate automatic back door.

3.

Check “Self Diagnostic Result” with CONSULT-III.

Is DTC detected?

YES

>> Go to 

DLK-67, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005517486

1.

CHECK ENCODER SIGNAL

Check encoder (“ENCODER A”, “ENCODER B”) in Data Monitor mode.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-39, "Intermittent Incident"

.

NO

>> GO TO 2.

2.

CHECK ENCODER POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect automatic back door unit connector.

3.

Check voltage between automatic back door unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2403

ENCODER

When the automatic back door control unit cannot re-
ceive the signal from the encoder just after starting the 
open/close operation

• Encoder
• Harness or connectors

(Encoder circuit is open or short-
ed)

• Automatic back door control unit

Monitor item

Condition

Status

 ENCODER A

Back door

Moving

Change HI or LO

Stop

No change HI or LO

 ENCODER B

Back door

Moving

Change HI or LO

Stop

No change HI or LO

(+)

(–)

Voltage (V)

(Approx.)

Automatic back door unit connector

Connector

Terminal

B76

2

Ground

Battery voltage