Nissan X-Trail 32. Manual — part 56
AV-216
< DTC/CIRCUIT DIAGNOSIS >
[WITH NAVIGATION]
U12B0 POWER SUPPLY VOLTAGE
U12B0 POWER SUPPLY VOLTAGE
DTC Description
INFOID:0000000010714881
DTC DETECTION LOGIC
POSSIBLE CAUSE
• NAVI control unit power supply circuit
• NAVI control unit
FAIL-SAFE
The function of some multi-AV systems does not operate
DTC CONFIRMATION PROCEDURE
NOTE:
• The auto ACC function allows the accessory power supply for a certain period of time even after ignition
switch OFF. For this reason, when performing diagnosis, turn the ignition switch OFF and wait for 3 minutes
with the driver's door opened.
• The operation of the vehicle during standby may cause an accessory power supply.
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.
Turn ignition switch ON.
2.
Turn ignition switch OFF and wait for 3 minutes with the driver's door opened.
3.
Turn ignition switch ON and wait at least 30 seconds.
4.
Select “Self Diagnostic Result” mode of “MULTI AV” using CONSULT.
5.
Check DTC.
Is DTC U12B0 detected?
YES
>> Proceed to
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010714882
1.
CHECK NAVI CONTROL UNIT POWER SUPPLY CIRCUIT
Check NAVI control unit power supply circuit. Refer to
AV-241, "NAVI CONTROL UNIT : Diagnosis Proce-
.
Is the inspection result normal?
YES
>> Replace NAVI control unit. Refer to
AV-262, "Removal and Installation"
NO
>> Repair or replace malfunctioning parts.
DTC
Trouble diagnosis
(Trouble diagnosis contents)
Detecting condition
U12B0
SUPPLY VOLTAGE UNDER 9V
(Supply of the battery voltage less
than 9V continued for 20 seconds)
NAVI control unit power supply voltage is less than the lower limit.
AV
U12B1 POWER SUPPLY VOLTAGE
AV-217
< DTC/CIRCUIT DIAGNOSIS >
[WITH NAVIGATION]
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U12B1 POWER SUPPLY VOLTAGE
DTC Description
INFOID:0000000010714883
DTC DETECTION LOGIC
POSSIBLE CAUSE
• NAVI control unit power supply circuit
• NAVI control unit
FAIL-SAFE
The function of some multi-AV systems does not operate
DTC CONFIRMATION PROCEDURE
NOTE:
• The auto ACC function allows the accessory power supply for a certain period of time even after ignition
switch OFF. For this reason, when performing diagnosis, turn the ignition switch OFF and wait for 3 minutes
with the driver's door opened.
• The operation of the vehicle during standby may cause an accessory power supply.
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.
Turn ignition switch ON.
2.
Turn ignition switch OFF and wait for 3 minutes with the driver's door opened.
3.
Turn ignition switch ON and wait at least 30 seconds.
4.
Select “Self Diagnostic Result” mode of “MULTI AV” using CONSULT.
5.
Check DTC.
Is DTC U12B1 detected?
YES
>> Proceed to
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010714884
1.
CHECK NAVI CONTROL UNIT POWER SUPPLY CIRCUIT
Check NAVI control unit power supply circuit. Refer to
AV-241, "NAVI CONTROL UNIT : Diagnosis Proce-
.
Is the inspection result normal?
YES
>> Replace NAVI control unit. Refer to
AV-262, "Removal and Installation"
NO
>> Repair or replace malfunctioning parts.
DTC
Trouble diagnosis
(Trouble diagnosis contents)
Detecting condition
U12B1
SUPPLY VOLTAGE OVER 16V
(Supply of the battery voltage more
than 16V continued for 20 seconds)
NAVI control unit power supply voltage is more than the upper limit.
AV-218
< DTC/CIRCUIT DIAGNOSIS >
[WITH NAVIGATION]
U12B2 DAB ANTENNA
U12B2 DAB ANTENNA
DTC Description
INFOID:0000000010714885
DTC DETECTION LOGIC
POSSIBLE CAUSE
• DAB antenna is unconnected
• Harness or connector (DAB antenna circuit is open or short)
FAIL-SAFE
DAB radio is not received
DTC CONFIRMATION PROCEDURE
NOTE:
• The auto ACC function allows the accessory power supply for a certain period of time even after ignition
switch OFF. For this reason, when performing diagnosis, turn the ignition switch OFF and wait for 3 minutes
with the driver's door opened.
• The operation of the vehicle during standby may cause an accessory power supply.
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.
Turn ignition switch ON.
2.
Turn ignition switch OFF and wait for 3 minutes with the driver's door opened.
3.
Turn ignition switch ON and wait at least 30 seconds.
4.
Select “Self Diagnostic Result” mode of “MULTI AV” using CONSULT.
5.
Check DTC.
Is DTC U12B2 detected?
YES
>> Proceed to
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010714886
NOTE:
• The auto ACC function allows the accessory power supply for a certain period of time even after ignition
switch OFF. For this reason, when performing diagnosis, turn the ignition switch OFF and wait for 3 minutes
with the driver's door opened.
• The operation of the vehicle during standby may cause an accessory power supply.
1.
CHECK ANTENNA BASE (DAB ANTENNA) HARNESS CONNECTOR
1.
Turn ignition switch OFF.
2.
Visually check antenna base (DAB antenna) and antenna feeder.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning parts.
2.
CHECK CONTINUITY BETWEEN NAVI CONTROL UNIT AND ANTENNA AMP.(ANTENNA BASE)
1.
Turn ignition switch OFF.
2.
Disconnect base harness connector and NAVI control unit harness connector.
3.
Check the continuity between NAVI control unit harness connector and antenna base harness connector.
DTC
Trouble diagnosis
(Trouble diagnosis contents)
Detecting condition
U12B2
DAB ANTENNA CONN
(DAB antenna connection error)
DAB antenna connection and circuit malfunction is detected.
AV
U12B2 DAB ANTENNA
AV-219
< DTC/CIRCUIT DIAGNOSIS >
[WITH NAVIGATION]
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4.
Check the continuity between NAVI control unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace NAVI control unit. Refer to
AV-262, "Removal and Installation"
NO
>> Repair harness or connector.
NAVI control unit
Antenna base
Continuity
Connector
Terminals
Connector
Terminals
M390
90
M375
3
Existed
NAVI control unit
Ground
Continuity
Connector
Terminals
M390
90
Not existed
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