Nissan Leaf. Instruction — part 41
AV
U1000 CAN COMM CIRCUIT
AV-155
< DTC/CIRCUIT DIAGNOSIS >
[AUDIO W/O NAVI (FOR MEXICO)]
C
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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.
LAN-37, "CAN COMMUNICATION SYSTEM : CAN Communication Signal Chart"
communication signal.
AV CONTROL UNIT : DTC Logic
INFOID:0000000010558353
DTC DETECTION LOGIC
AV CONTROL UNIT : Diagnosis Procedure
INFOID:0000000010558354
1.
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"
NO
>> 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-
AROUND VIEW MONITOR CONTROL UNIT : DTC Logic
INFOID:0000000010558356
DTC DETECTION LOGIC
AROUND VIEW MONITOR CONTROL UNIT : Diagnosis Procedure
INFOID:0000000010558357
1.
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"
NO
>> Refer to
GI-53, "Intermittent Incident"
.
AV
U1010 CONTROL UNIT (CAN)
AV-157
< DTC/CIRCUIT DIAGNOSIS >
[AUDIO W/O NAVI (FOR MEXICO)]
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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
.
1.
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.
NO
>> Repair or replace harness or connectors.
2.
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.
NO
>> Replace around view monitor control unit. Refer to
AV-204, "Removal and Installation"
3.
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
26
D557
8
Yes
25
7
Around view monitor control unit
Ground
Continuity
Connector
Terminal
M32
26
—
No
Around view monitor control unit
Ground
Condition
Voltage
(Approx.)
Connector
Terminal
M32
26
—
CAMERA switch ON
or
Selector lever in R (re-
verse) position
6.2 V
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