Nissan Maxima. Manual — part 135
AV-360
< SYSTEM DESCRIPTION >
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DIAGNOSIS SYSTEM (AV CONTROL UNIT)
DATA MONITOR
ALL SIGNALS
• Displays the status of the following vehicle signals inputted into the AV control unit.
• For each signal, actual signal can be compared with the condition recognized on the system.
HDD CONN [U1218]
AV control unit malfunction is detected.
• If the hard disk drive (HDD) is function-
ing normally, there is a possibility of a
temporary malfunction.
• Replace the AV control unit if the mal-
function occurs constantly.
HDD READ [U1219]
HDD WRITE [U121A]
HDD COMM [U121B]
HDD ACCESS [U121C]
USB CONTROLLER [U1225]
USB connection malfunction is detected.
Check that the connection to the USB con-
nector is normal.
DSP CONN [U121D]
AV control unit malfunction is detected.
• If a disc can be played, then there is a
possibility of the detection of a tempo-
rary malfunction.
• Replace the AV control unit if the mal-
function occurs constantly.
DSP COMM [U121E]
DVD COMM [U1227]
AV control unit malfunction is detected.
• If DVD can be played, then there is a
possibility of the detection of a tempo-
rary malfunction.
• Replace the AV control unit if the mal-
function occurs constantly.
CONFIG UNFINISH [U122A]
The writing of configuration data is incom-
plete.
Write configuration data with CONSULT.
ST ANGLE SEN CALIB [U1232]
Predictive course line center position ad-
justment of the steering angle sensor is in-
complete.
Adjust the predictive course line center po-
sition of the steering angle sensor.
FRONT DISP CONN [U1243]
When either one of the following items are
detected:
• Display unit power supply and ground
circuits malfunction is detected.
• Communication circuits between AV
control unit and display unit.
• Display unit power supply and ground
circuits.
• Communication circuits between AV
control unit and AV display unit.
SAT CONN [U1255]
Satellite radio tuner malfunction is detect-
ed.
Replace the satellite radio tuner if the mal-
function occurs constantly.
USB OVERCURRENT [U1263]
Detection of over current in USB connect-
er.
Check USB harness between the AV con-
trol unit and USB connector.
• 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.
• Multifunction switch power supply and
ground circuits.
• AV communication circuits between AV
control unit and multifunction switch.
Error item
Description
Possible malfunction factor/Action to take
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.
AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
AV-361
< SYSTEM DESCRIPTION >
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SELECTION FROM MENU
Allows the technician to select which vehicle signals should be displayed and displays the status of the
selected vehicle signals.
WORK SUPPORT
CONFIGURATION
Configuration has three functions as follows.
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 ACC position
REV SIG
On
Selector lever in R position
Changes in indication may be delayed. This is
normal.
Off
Selector lever in any position other
than R
Display Item
Display
Vehicle status
Remarks
Item to be selected
Description
VHCL SPD SIG
The same as when “ALL SIGNALS” is selected.
PKB SIG
ILLUM SIG
IGN SIG
REV SIG
Conditions
Description
ST ANGLE SENSOR ADJUSTMENT
Steering angle sensor neutral position adjustment can be per-
formed. Refer to
BRC-6, "ADJUSTMENT OF STEERING ANGLE
SENSOR NEUTRAL POSITION : Description"
.
Function
Description
READ CONFIGURATION
• Reads the vehicle configuration of current AV control unit.
• Saves the read vehicle configuration.
WRITE CONFIGURATION-Manual selection
Writes the vehicle configuration with manual selection.
WRITE CONFIGURATION-Config file
Writes the vehicle configuration with saved data.
AV-362
< SYSTEM DESCRIPTION >
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DIAGNOSIS SYSTEM (BLUETOOTH® CONTROL UNIT)
DIAGNOSIS SYSTEM (BLUETOOTH® CONTROL UNIT)
Diagnosis Description
INFOID:0000000009471300
The Bluetooth
®
control unit has two diagnostic checks. The first diagnostic check is performed automatically
every ignition cycle during control unit initialization. The second diagnostic check is performed by the techni-
cian using the steering wheel audio control switches prior to trouble diagnosis.
BLUETOOTH
®
CONTROL UNIT INITIALIZATION CHECKS
• Internal control unit failure
• Bluetooth
®
antenna connection open or shorted
• Steering wheel audio control switches [
(PHONE/SEND), (PHONE/END)] stuck closed
• Vehicle speed pulse count
• Microphone connection test (with playback to operator)
• Bluetooth
®
inquiry check
OPERATION PROCEDURE
1. Turn ignition switch to ACC or ON.
2. Wait for the Bluetooth
®
system to complete initialization. This may take up to 20 seconds.
3. Press and hold the steering wheel audio control switch
(PHONE/SEND) button for at least 5 seconds. The Bluetooth
®
system will begin to play a verbal prompt.
4. While the prompt is playing, press and hold the steering wheel
audio control switch
(PHONE/END) button until you hear the
“Diagnostics mode” prompt. The Bluetooth
®
system will sound a
5-second beep.
5. While the beep is sounding, press and hold the steering wheel
audio control switch
(PHONE/END) button again until you
hear prompts.
6. The Bluetooth
®
system has now entered into the diagnostic
mode. Results of the diagnostic checks will be verbalized to the
technician. Refer to
7. After the failure records are reported, an interactive microphone
test will be performed. Follow the voice prompt. If the micro-
phone test fails, refer to
.
Work Flow
INFOID:0000000009471301
AWNIA1979ZZ
AWNIA1980ZZ
Failure Message
Action
“Internal failure”
Replace Bluetooth
®
AV-503, "Removal and Installation"
“Bluetooth
®
antenna open”
1.
Inspect harness connection.
2.
Replace Bluetooth
®
antenna. Refer to
AV-502, "Removal and Installation"
.
“Bluetooth
®
antenna shorted”
“Phone/Send for Hands Free System is stuck”
Check steering wheel audio control switches. Refer to
“Phone/End for the Hands Free System is stuck”
“Microphone test” (failed interactive test)
1.
Inspect harness between Bluetooth
®
control unit and microphone.
2.
Replace microphone. Refer to
AV
U1000 CAN COMM CIRCUIT
AV-363
< DTC/CIRCUIT DIAGNOSIS >
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DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000009471302
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 on 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.
DTC Logic
INFOID:0000000009471303
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000009471304
1.
PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result” of “AV Control Unit”.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to “LAN system”. Refer to
LAN-15, "Trouble Diagnosis Flow Chart"
NO
>> Refer to GI section. Refer to
GI-41, "Intermittent Incident"
.
DTC
Display contents of CON-
SULT
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.
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