Nissan Quest E52. Instruction — part 120
AV
U1216 AV CONTROL UNIT
AV-359
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U1216 AV CONTROL UNIT
DTC Logic
INFOID:0000000009652161
DTC
Display contents of
CONSULT
DTC detection condition
Possible malfunction factor
U1216
CAN CONT
[U1216]
AV control unit malfunction is detected.
Replace the AV control unit if the mal-
function occurs constantly.
Refer to
.
AV-360
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
U1232 STEERING ANGLE SENSOR
U1232 STEERING ANGLE SENSOR
DTC Logic
INFOID:0000000009652162
Diagnosis Procedure
INFOID:0000000009652163
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
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.
AV
U1243 FRONT DISPLAY UNIT
AV-361
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
C
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U1243 FRONT DISPLAY UNIT
DTC Logic
INFOID:0000000009652164
Diagnosis Procedure
INFOID:0000000009652165
1.
CHECK FRONT DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUITS
Check front display unit power supply and ground circuits. Refer to
AV-367, "FRONT DISPLAY UNIT : Diagno-
Is inspection result normal?
YES
>> GO TO 2.
NO
>> Repair malfunctioning parts.
2.
CHECK CONTINUITY COMMUNICATION CIRCUITS
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 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
M156
11
M172
51
Existed
22
39
Front display unit
Ground
Continuity
Connector
Terminals
M156
11
Not existed
12
AV-362
< DTC/CIRCUIT DIAGNOSIS >
[BOSE AUDIO WITHOUT NAVIGATION]
U1243 FRONT DISPLAY UNIT
Is inspection result normal?
YES
>> GO TO 4.
NO
>> Replace AV control unit. Refer to
AV-404, "Removal and Installation"
.
4.
CHECK COMMUNICATION SIGNAL
Check signal between front display unit harness connector and ground.
Is inspection result normal?
YES
>> INSPECTION END
NO
>> Replace front display unit. Refer to
AV-405, "Removal and Installation"
.
Probe
Condition
Standard
Reference value
(+)
(
−
)
Front display unit
Connector
Terminal
Connector
Terminal
M156
11
M156
1
When ad-
justing dis-
play
brightness.
Waveform of 0.4 V - 5.3
V is input.
PKIB5039J
Probe
Condition
Standard
Reference value
(+)
(
−
)
Front display unit
Connector
Terminal
Connector
Terminal
M156
22
M156
1
When ad-
justing dis-
play
brightness.
Waveform of 0.5 V or
less - 3.5 V or more is in-
put.
PKIB5039J
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