Nissan Quest E52. Instruction — part 172
AV
U122E AV CONTROL UNIT
AV-567
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U122E AV CONTROL UNIT
DTC Logic
INFOID:0000000009652352
DTC DETECTION LOGIC
DTC
Display contents of CON-
SULT
DTC detection condition
Possible malfunction factor
U122E
Built-in AUDIO CONN
[U122E]
AV control unit malfunction is detected.
Replace the AV control unit if the malfunction
occurs constantly.
Refer to
AV-568
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U1232 STEERING ANGLE SENSOR
U1232 STEERING ANGLE SENSOR
AV CONTROL UNIT
AV CONTROL UNIT : DTC Logic
INFOID:0000000009652353
AV CONTROL UNIT : Diagnosis Procedure
INFOID:0000000009652354
1.
ADJUST THE NEUTRAL POSITION OF THE STEERING ANGLE SENSOR
When U1232 is detected, adjust the neutral position of the steering angle sensor.
>> Adjusts the steering angle sensor neutral position on ABS actuator and electrical unit (control unit)
side. Refer to
AROUND VIEW MONITOR CONTROL UNIT
AROUND VIEW MONITOR CONTROL UNIT : Diagnosis Procedure
INFOID:0000000009942958
1.
CHECK FUSE
Check for blown fuses.
Is inspection result normal?
YES
>> GO TO 2.
NO
>> Be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUITS
Check voltage between around view monitor control unit harness connector and ground.
Is inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness between around view monitor control unit and fuse.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect around view monitor control unit connector.
3.
Check continuity between around view monitor control unit harness connector and ground.
Is inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
DTC
Display contents of
CONSULT
DTC detection condition
Possible malfunction factor
U1232
ST ANGLE SEN CALIB
[1232]
Neutral position adjustment of the steering angle sensor
is incomplete.
Adjust neutral position of the steering
angle sensor.
Power source
Fuse No.
Battery
35
Signal name
Connector
Terminal
Ignition switch position
Value (Approx.)
Battery power supply
M253
2
OFF
Battery voltage
Signal name
Connector
Terminal
Ignition switch position
Continuity
Ground
M253
1
OFF
Existed
AV
U1243 FRONT DISPLAY UNIT
AV-569
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
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U1243 FRONT DISPLAY UNIT
DTC Logic
INFOID:0000000009652356
Diagnosis Procedure
INFOID:0000000009652357
1.
CHECK FRONT DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT
Check front display unit power supply and ground circuit. Refer to
AV-580, "AV CONTROL UNIT : Diagnosis
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair malfunctioning parts.
2.
CHECK CONTINUITY COMMUNICATION CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect front display unit connector and AV control unit connector.
3.
Check continuity between front display unit harness connector and AV control unit harness connector.
4.
Check continuity between front display unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK COMMUNICATION SIGNAL
1.
Connect front display unit connector and AV control unit connector.
2.
Turn ignition switch ON.
3.
Check signal between front display unit harness connector and ground.
DTC
Display contents of
CONSULT
DTC detection condition
Possible malfunction factor
U1243
FRONT DISP CONN
[U1243]
When either one of the following items are detected:
• front display unit power supply and ground circuits are
malfunctioning.
• serial communication circuits between front display unit
and AV control unit are malfunctioning.
• Front display unit power supply and
ground circuits.
• Serial communication circuits be-
tween front display unit and AV
control unit.
Front display unit
AV control unit
Continuity
Connector
Terminals
Connector
Terminals
M155
9
M180
89
Existed
10
73
Front display unit
Ground
Continuity
Connector
Terminals
M155
9
Not existed
10
AV-570
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITH NAVIGATION]
U1243 FRONT DISPLAY UNIT
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace AV control unit. Refer to
AV-610, "Removal and Installation"
.
4.
CHECK COMMUNICATION SIGNAL
Check signal between front display unit harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace front display unit. Refer to
AV-611, "Removal and Installation"
.
Probe
Condition
Standard
Reference value
(+)
(
−
)
Front display unit
Connector
Terminal
Connector
Terminal
M155
9
M155
12
When ad-
justing dis-
play
brightness.
Waveform of 1.5 V or
less - 3.5 V or more is
output.
PKIB5039J
Probe
Condition
Standard
Reference value
(+)
(
−
)
Front display unit
Connector
Terminal
Connector
Terminal
M155
10
M155
12
When ad-
justing dis-
play
brightness.
Waveform of 1.5 V or
less - 3.5 V or more is in-
put.
PKIB5039J
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