Nissan Teana J32. Instruction — part 54
AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
AV-71
< FUNCTION DIAGNOSIS >
[BASE AUDIO AND DISPLAY SYSTEM]
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Allows the technician to select which vehicle signals should be displayed and displays the status of the
selected vehicle signals.
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-72
< COMPONENT DIAGNOSIS >
[BASE AUDIO AND DISPLAY SYSTEM]
U1000 CAN COMM CIRCUIT
COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000003882713
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 independent). 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-22, "CAN Communication Signal Chart"
DTC Logic
INFOID:0000000003882714
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000003882715
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-14, "Trouble Diagnosis Flow Chart"
NO
>> Refer to GI section. Refer to
GI-35, "Intermittent Incident"
.
DTC
Display contents of CON-
SULT-III
Diagnostic item is detected when...
Probable malfunction location
U1000
CAN COMM CIRCUIT
When AV control unit is not transmitting or re-
ceiving CAN communication signal for 2 sec-
onds or more.
CAN communication system
AV
U1010 CONTROL UNIT (CAN)
AV-73
< COMPONENT DIAGNOSIS >
[BASE AUDIO AND DISPLAY SYSTEM]
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U1010 CONTROL UNIT (CAN)
Description
INFOID:0000000003882716
Initial diagnosis of AV control unit.
DTC Logic
INFOID:0000000003882717
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000003882718
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
AV-74
< COMPONENT DIAGNOSIS >
[BASE AUDIO AND DISPLAY SYSTEM]
U1310 AV CONTROL UNIT
U1310 AV CONTROL UNIT
Description
INFOID:0000000003882719
Replace the AV control unit if this DTC is displayed. Refer to
AV-170, "Removal and Installation"
.
DTC Logic
INFOID:0000000003882720
DTC DETECTION LOGIC
Part name
Description
AV CONTROL UNIT
• It is the master unit of the MULTI AV system, and it is connected to each control
unit by communication. It operates each system according to communication
signals from the AV control unit.
• AV control unit includes audio function and vehicle information function.
• It is connected to ECM and combination meter via CAN communication to ob-
tain necessary information for the vehicle information function.
• It is connected to BCM via CAN communication transmitting/receiving for the
vehicle settings function.
• AUX image signal is input from auxiliary jacks.
• Camera image signal is input from camera control unit.
• Composite image (AUX and camera images) signal is output to display unit.
• AUX sound signal is input from the auxiliary jacks.
• Power (signal VCC and inverter VCC) is transmitted to front display unit.
DTC
Display contents of
CONSULT-III
DTC Detection Condition
Action to take
U1310
CONTROL UNIT (AV)
[U1310]
AV communication circuit initial diagnosis malfunction is
detected.
Replace AV control unit.
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