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Nissan Leaf. Manual - part 41

U1000 CAN COMM CIRCUIT

AV-155

< DTC/CIRCUIT DIAGNOSIS >

[AUDIO W/O NAVI (FOR MEXICO)]

U1000 CAN COMM CIRCUIT

AV CONTROL UNIT
AV CONTROL UNIT : Description

INFOID:0000000010558352

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on board multi-

plex communication line with high data communication speed and excellent error detection ability. A modern

vehicle is equipped with many ECMs, and each control unit shares information and links with other control

units during operation (not independent). In CAN communication, 2 control units are connected with 2 commu-

nication lines (CAN H-line and CAN L-line) allowing a high rate of information transmission with less wiring.

Each control unit transmits/receives data but selectively reads required data only.

Refer to

LAN-37, "CAN COMMUNICATION SYSTEM : CAN Communication Signal Chart"

for details of the

communication signal.

AV CONTROL UNIT : DTC Logic

INFOID:0000000010558353

DTC DETECTION LOGIC

AV CONTROL UNIT : Diagnosis Procedure

INFOID:0000000010558354

PERFORM SELF DIAGNOSTIC RESULT

1. Turn the power switch ON and hold for 2 seconds or more.

2. Check Self Diagnostic Result of MULTI-AV.
Is CAN communication system displayed?

YES

>> Refer to

LAN-17, "Trouble Diagnosis Flow Chart"

>> Refer to

GI-53, "Intermittent Incident"

AROUND VIEW MONITOR CONTROL UNIT
AROUND VIEW MONITOR CONTROL UNIT : Description

INFOID:0000000010558355

CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle mul-

tiplex communication line with high data communication speed and excellent error detection ability. Many elec-

tronic control units are equipped onto a vehicle, and each control unit shares information and links with other

control units during operation (not independently). In CAN communication, control units are connected with 2

communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring. Each

control unit transmits/receives data but selectively reads required data only.

CAN Communication Signal Chart. Refer to

LAN-37, "CAN COMMUNICATION SYSTEM : CAN Communica-

tion Signal Chart"

AROUND VIEW MONITOR CONTROL UNIT : DTC Logic

INFOID:0000000010558356

DTC DETECTION LOGIC

AROUND VIEW MONITOR CONTROL UNIT : Diagnosis Procedure

INFOID:0000000010558357

PERFORM SELF-DIAGNOSTIC RESULT

1. Turn power switch ON and wait for 2 seconds or more.

2. Check Self Diagnostic Result of AVM.
Is “CAN COMM CIRCUIT” displayed?

CONSULT Display

DTC Detection Condition

Possible Cause

CAN COMM CIRC
[U1000]

When the AV control unit cannot communicate for
2 seconds or more.

CAN communication system

CONSULT Display

DTC Detection Condition

Possible Cause

CAN COMM CIRCUIT
[U1000]

Around view monitor control unit is not transmit-
ting or receiving CAN communication signal for 2
seconds or more.

CAN communication system.

AV-156

< DTC/CIRCUIT DIAGNOSIS >

[AUDIO W/O NAVI (FOR MEXICO)]

U1000 CAN COMM CIRCUIT

YES

>> Refer to

LAN-17, "Trouble Diagnosis Flow Chart"

>> Refer to

GI-53, "Intermittent Incident"

U1010 CONTROL UNIT (CAN)

AV-157

< DTC/CIRCUIT DIAGNOSIS >

[AUDIO W/O NAVI (FOR MEXICO)]

U1010 CONTROL UNIT (CAN)

AV CONTROL UNIT
AV CONTROL UNIT : DTC Logic

INFOID:0000000010558358

DTC DETECTION LOGIC

AROUND VIEW MONITOR CONTROL UNIT
AROUND VIEW MONITOR CONTROL UNIT : DTC Logic

INFOID:0000000010558359

DTC DETECTION LOGIC

CONSULT Display

DTC Detection Condition

Possible Cause

CONTROL UNIT (CAN)
[U1010]

Malfunction is detected during initial diagnosis of
the AV control unit CAN controller.

Replace the AV control unit if malfunction con-
stantly occurs.
Refer to

AV-192, "Removal and Installation"

CONSULT Display

DTC Detection Condition

Possible Cause

CONTROL UNIT (CAN)
[U1010]

CAN initial diagnosis malfunction is detected.

Replace the around view monitor control unit if
the malfunction occurs constantly.
Refer to

AV-204, "Removal and Installation"

AV-158

< DTC/CIRCUIT DIAGNOSIS >

[AUDIO W/O NAVI (FOR MEXICO)]

U111A REAR CAMERA IMAGE SIGNAL CIRCUIT

U111A REAR CAMERA IMAGE SIGNAL CIRCUIT

DTC Logic

INFOID:0000000010546303

Diagnosis Procedure

INFOID:0000000010546304

Regarding Wiring Diagram information, refer to

AV-125, "Wiring Diagram"

CHECK REAR VIEW CAMERA POWER SUPPLY AND GROUND CIRCUIT CONTINUITY

1. Turn power switch OFF.

2. Disconnect around view monitor control unit and rear view camera connectors.

3. Check continuity between around view monitor control unit connector M32 and rear view camera connec-

tor D557.

4. Check continuity between around view monitor control unit connector M32 and ground.

Is inspection result normal?

YES

>> GO TO 2.

>> Repair or replace harness or connectors.

CHECK REAR VIEW CAMERA POWER SUPPLY VOLTAGE

1. Connect around view monitor control unit and rear view camera connectors.

2. Turn power switch ON.

3. Check voltage between around view monitor control unit connector M32 and ground.

Is inspection result normal?

YES

>> GO TO 3.

>> Replace around view monitor control unit. Refer to

AV-204, "Removal and Installation"

CHECK REAR VIEW CAMERA IMAGE SIGNAL CIRCUIT CONTINUITY

1. Turn power switch OFF.

2. Disconnect around view monitor control unit and rear view camera connectors.

CONSULT Display

DTC Detection Condition

Possible Cause

REAR CAMERA IMAGE SIG-
NAL
[U111A]

Rear camera image signal circuit is open or
shorted.

Check rear camera image signal circuit between
rear camera and around view monitor control
unit.

Around view monitor control unit

Rear view camera

Continuity

Connector

Terminals

Connector

Terminals

M32

D557

Yes

Around view monitor control unit

Ground

Continuity

Connector

Terminal

M32

—

Around view monitor control unit

Ground

Condition

Voltage

(Approx.)

Connector

Terminal

M32

—

CAMERA switch ON
or
Selector lever in R (re-
verse) position

6.2 V

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