Nissan Maxima. Manual — part 186
AV-564
< DTC/CIRCUIT DIAGNOSIS >
[COLOR DISPLAY - W/BOSE & NAVI]
U1232 STEERING ANGLE SENSOR
U1232 STEERING ANGLE SENSOR
DTC Logic
INFOID:0000000009471478
Diagnosis Procedure
INFOID:0000000009471479
1.
ADJUST THE PREDICTIVE COURSE LINE CENTER POSITION OF THE STEERING ANGLE SENSOR
When U1232 is detected, adjust the predictive course line center position of the steering angle sensor.
>> Adjusts the steering angle sensor neutral position on ABS actuator and electrical unit (control unit)
side. Refer to
BRC-6, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION :
.
DTC
Display contents of
CONSULT
DTC detection condition
Possible malfunction factor
U1232
ST ANGLE SEN CALIB
[1232]
Predictive course line center position adjustment of the
steering angle sensor is incomplete.
Adjust the predictive course line cen-
ter position of the steering angle sen-
sor.
AV
U1243 DISPLAY UNIT
AV-565
< DTC/CIRCUIT DIAGNOSIS >
[COLOR DISPLAY - W/BOSE & NAVI]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U1243 DISPLAY UNIT
DTC Logic
INFOID:0000000009471480
Diagnosis Procedure
INFOID:0000000009471481
Regarding Wiring Diagram information, refer to
AV-614, "Wiring Diagram - With BOSE audio system With Nav-
1.
CHECK DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT
Check display unit power supply and ground circuit. Refer to
AV-572, "DISPLAY UNIT : Diagnosis Procedure"
.
Is inspection result OK?
YES
>> GO TO 2.
NO
>> Repair malfunctioning parts.
2.
CHECK CONTINUITY OF COMMUNICATION CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect display unit connector M142 and AV control unit connector M163.
3. Check continuity between display unit harness connector M142
(A) terminals 9, 10 and AV control unit harness connector M163
(B) terminals 45 and 61.
4. Check continuity between display unit harness connector M142
(A) terminals 9, 10 and ground.
Are continuity results as specified?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK COMMUNICATION SIGNAL
1. Connect display unit connector and AV control unit connector.
2. Turn ignition switch ON.
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:
• display unit power supply and ground circuit malfunc-
tion is detected.
• communication circuit between AV control unit and dis-
play unit.
• Display unit power supply and
ground circuit.
• Communication circuit between AV
control unit and display unit.
A
B
Continuity
Connector
Terminal
Connector
Terminal
M142
9
M163
61
Yes
10
45
A
—
Continuity
Connector
Terminal
M142
9
Ground
No
10
AWNIA1935GB
AV-566
< DTC/CIRCUIT DIAGNOSIS >
[COLOR DISPLAY - W/BOSE & NAVI]
U1243 DISPLAY UNIT
3. Check signal between display unit harness connector M142 ter-
minal 9 and ground with an oscilloscope or CONSULT.
Are voltage readings as specified?
YES
>> GO TO 4.
NO
>> Replace AV control unit. Refer to
AV-652, "Removal and Installation"
.
4.
CHECK COMMUNICATION SIGNAL
Check signal between display unit harness connector M142 terminal
10 and ground with an oscilloscope or CONSULT.
Are voltage readings as specified?
YES
>> Inspection End.
NO
>> Replace display unit. Refer to
AV-655, "Removal and Installation"
.
(+)
(-)
Reference signal
Connector
Terminal
M142
9
Ground
AWNIA1936GB
PKIB5039J
(+)
(-)
Reference signal
Connector
Terminal
M142
10
Ground
AWNIA1937GB
PKIB5039J
AV
U1244 GPS ANTENNA
AV-567
< DTC/CIRCUIT DIAGNOSIS >
[COLOR DISPLAY - W/BOSE & NAVI]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U1244 GPS ANTENNA
DTC Logic
INFOID:0000000009471482
Diagnosis Procedure
INFOID:0000000009471483
Regarding Wiring Diagram information, refer to
AV-614, "Wiring Diagram - With BOSE audio system With Nav-
1.
GPS ANTENNA CHECK
Inspect GPS antenna and antenna feeder for damage or poor connection.
Is the GPS antenna and feeder clean and undamaged?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning parts.
2.
CHECK AV CONTROL UNIT VOLTAGE
1. Turn ignition switch ON.
2. Check voltage between AV control unit connector M165 terminal
105 and ground.
Is the voltage reading as specified?
YES
>> Replace GPS antenna. Refer to
NO
>> Replace AV control unit. Refer to
AV-652, "Removal and Installation"
.
DTC
Display contents of
CONSULT
DTC detection condition
Possible malfunction factor
U1244
GPS ANTENNA CONN
[U1244]
GPS antenna connection malfunction is detected.
Check the connection of the GPS an-
tenna connector.
(+)
(-)
Voltage (Approx.)
Connector
Terminal
M165
105
Ground
5V
AWNIA1763ZZ
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