Nissan Murano Z51. Manual - part 206

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-603

< SYSTEM DESCRIPTION >

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NOTE:

*: Non-equipped item is not displayed.

DATA MONITOR

All Signals

• Displays the status of the following vehicle signals inputted into the AV control unit.
• For each signal, the actual signal can be compared with the status recognized on the system.

• AV COMM CIRCUIT [U1300]
• INTERNAL COMM [U121F]

Malfunction is detected in AV control unit 
power supply and ground circuits.

Check AV control unit power supply and 
ground circuits. When detecting no mal-
function in those components, replace AV 
control unit.

• AV COMM CIRCUIT [U1300]
• SWITCH CONN [U1240]

When either one of the following items are 
detected:
• multifunction switch power supply and 

ground circuits are malfunctioning.

• AV communication circuits between AV 

control unit and multifunction switch are 
malfunctioning.

• AV communication signal between AV 

control unit and multifunction switch is 
malfunctioning.

• Multifunction switch power supply and 

ground circuits.

• AV communication circuits between AV 

control unit and multifunction switch.

• AV COMM CIRCUIT [U1300]
• REAR CAMERA LAN CONN [U1252]

When either one of the following items are 
detected:
• camera control unit power supply and 

ground circuits are malfunctioning.

• AV communication circuits between mul-

tifunction switch and camera control unit 
is malfunctioning.

• AV communication signal between AV 

control unit and camera control unit is 
malfunctioning.

• Camera control unit power supply and 

ground circuits.

• AV communication circuits between mul-

tifunction switch and camera control unit.

• AV COMM CIRCUIT [U1300]
• IPod CONN [U1254]

When either one of the following items are 
detected:
• iPod adapter power supply and ground 

circuits are malfunctioning.

• AV communication circuits between mul-

tifunction switch and iPod adapter are 
malfunctioning.

• AV communication signal between AV 

control unit and iPod adapter is malfunc-
tioning.

• iPod adapter power supply and ground 

circuits.

• AV communication circuits between mul-

tifunction switch unit and iPod adapter.

• AV COMM CIRCUIT [U1300]
• REAR CAMERA LAN CONN [U1252]

• IPod CONN [U1254]

*

Malfunction is detected in AV communica-
tion circuits between camera control unit 
and the junction of AV control unit and mul-
tifunction switch. 

AV communication circuits between cam-
era control unit and the junction of AV con-
trol unit and multifunction switch.

• AV COMM CIRCUIT [U1300]
• SWITCH CONN [U1240]
• REAR CAMERA LAN CONN [U1252]

• IPod CONN [U1254]

*

Malfunction is detected in AV communica-
tion circuits between AV control unit and 
multifunction switch.

AV communication circuits between AV 
control unit and the junction of camera con-
trol unit and multifunction switch.

• AV COMM CIRCUIT [U1300]
• INTERNAL COMM [U121F]
• SWITCH CONN [U1240]
• REAR CAMERA LAN CONN [U1252]
• IPod CONN [U1254]*

Malfunction is detected in AV communica-
tion circuits.

Check and repair the short circuit in AV 
communication circuits.

Error item

Description

Possible malfunction factor/Action to take

AV-604

< SYSTEM DESCRIPTION >

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DIAGNOSIS SYSTEM (AV CONTROL UNIT)

Selection From Menu

allows the technician to select which vehicle signals should be displayed and displays the status of the
selected vehicle signals.

Display Item

Display

Vehicle status

Remarks

VHCL SPD SIG

On

Vehicle speed >0 km/h (0 MPH)

Changes in indication may be delayed. This is 
normal.

Off

Vehicle speed =0 km/h (0 MPH)

PKB SIG

On

Parking brake is applied.

Off

Parking brake is released.

ILLUM SIG

On

Block the light beam from the auto 
light optical sensor when the light 
SW is ON.

—

Off

Expose the auto light optical sensor 
to light when the light SW is OFF or 
ON.

IGN SIG

On

Ignition switch ON

Off

Ignition switch in the ACC position

REV SIG

On

Selector lever in the “R” position

Changes in indication may be delayed. This is 
normal.

Off

Selector lever in any position other 
than the “R” position

Item to be selected

Description

VHCL SPD SIG

The same as when “ALL SIGNALS” 
is selected.

PKB SIG

ILLUM SIG

IGN SIG

REV SIG

AV

U1000 CAN COMM CIRCUIT

AV-605

< DTC/CIRCUIT DIAGNOSIS >

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DTC/CIRCUIT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000005528697

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-27, "CAN Communication Signal Chart"

.

DTC Logic

INFOID:0000000005528698

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000005528699

1.

PERFORM SELF-DIAGNOSTIC

1.

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

2.

Check “Self Diagnostic Result” of “MULTI AV”. 

Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to “LAN system”. Refer to 

LAN-17, "Trouble Diagnosis Flow Chart"

.

NO

>> Refer to GI section. Refer to 

GI-39, "Intermittent Incident"

.

DTC

Display contents of CON-

SULT-III

Diagnostic item is detected when...

Probable malfunction location

U1000

CAN COMM CIRCUIT

AV control unit is not transmitting or receiving 
CAN communication signal for 2 seconds or 
more.

CAN communication system.

AV-606

< DTC/CIRCUIT DIAGNOSIS >

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U1010 CONTROL UNIT (CAN)

U1010 CONTROL UNIT (CAN)

Description

INFOID:0000000005528700

Initial diagnosis of AV control unit.

DTC Logic

INFOID:0000000005528701

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000005528702

1.

REPLACE AV CONTROL UNIT

When DTC U1010 is detected, replace AV control unit.

>> INSPECTION END

DTC

Display contents of CON-

SULT-III

Diagnostic item is detected when...

Probable malfunction location

U1010

CONTROL UNIT (CAN)

CAN initial diagnosis malfunction is detected.

AV control unit.