Nissan X-Trail 32. Manual — part 62
AV-240
< DTC/CIRCUIT DIAGNOSIS >
[WITH NAVIGATION]
U1972 EPS
U1972 EPS
DTC Description
INFOID:0000000010923292
DTC DETECTION LOGIC
POSSIBLE CAUSE
EPS control unit
FAIL-SAFE
Around view monitor with Park Assist is cancel
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
WITH CONSULT
1.
Perform “All DTC Reading” with CONSULT.
2.
Check if the “U1972” is detected as the current malfunction in “Self Diagnostic Result” of “AVM”.
“U1972” detected as the current malfunction?
YES
>> Refer 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:0000000010923293
1.
CHECK SELF-DIAGNOSIS RESULTS
With CONSULT.
Check if the “U1000” is detected other than “U1972” in “Self Diagnostic Result” of “AVM”.
Is “U1000” detected?
YES
>> Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.
AV-181, "AROUND VIEW MONITOR CONTROL UNIT : Diagnosis Procedure"
.
NO
>> GO TO 2.
2.
CHECK SELF-DIAGNOSIS RESULTS
With CONSULT.
Check if any DTC is detected in “Self Diagnostic Result” of “EPS/DAST3”.
Is any DTC detected?
YES
>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
.
NO
>> Replace the around view monitor control unit. Refer to
AV-268, "Removal and Installation"
DTC
Trouble diagnosis
(Trouble diagnosis contents)
Detecting condition
U1972
EPS Message Counter
(Electronically controlled power
steering message counter)
Around view monitor control unit receives an incorrect signal from EPS control
unit via CAN communication
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-241
< DTC/CIRCUIT DIAGNOSIS >
[WITH NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
POWER SUPPLY AND GROUND CIRCUIT
NAVI CONTROL UNIT
NAVI CONTROL UNIT : Diagnosis Procedure
INFOID:0000000010714901
1.
CHECK FUSE
Check for blown fuses.
With stop/start system
Without stop/start system
Is inspection result OK?
YES
>> GO TO 2.
NO
>> Be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between NAVI control unit harness connector and ground.
Is inspection result OK?
YES
>> INSPECTION END
NO
>> Check harness between NAVI control unit and fuse.
AROUND VIEW MONITOR CONTROL UNIT
AROUND VIEW MONITOR CONTROL UNIT : Diagnosis Procedure
INFOID:0000000010714902
1.
CHECK FUSE
Check for blown fuses.
With stop/start system
Without stop/start system
Is the inspection result normal?
YES
>> GO TO 2.
Power source
Fuse No.
Battery
#63
Ignition switch ON or START
#56
Power source
Fuse No.
Battery
#16
Ignition switch ON or START
#30
Signal name
Terminal
Ignition
switch posi-
tion
Standard
Value (Approx.)
(+)
(
−
)
NAVI control unit
Connector
Terminal
Battery power
supply
M27
19
Ground
OFF
10.8 V – 15.6 V
Battery voltage
Ignition signal
M28
40
ON
10.8 V – 15.6 V
12.0 V
Power source
Fuse No.
Battery
#63
Ignition switch ON or START
#56
Power source
Fuse No.
Battery
#16
Ignition switch ON or START
#30
AV-242
< DTC/CIRCUIT DIAGNOSIS >
[WITH NAVIGATION]
POWER SUPPLY AND GROUND CIRCUIT
NO
>> Be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK AROUND VIEW MONITOR CONTROL UNIT POWER SUPPLY CIRCUIT
Check voltage between around view monitor control unit harness connector and ground.
With BSW
Without BSW
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the around view monitor control unit power supply circuit.
3.
CHECK AROUND VIEW MONITOR CONTROL UNIT GROUND CIRCUIT
1.
Turn the ignition switch OFF.
2.
Disconnect the around view monitor control unit connector.
3.
Check for continuity between around view monitor control unit harness connector and ground.
With BSW
Without BSW
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair the around view monitor control unit ground circuit.
Around view monitor control unit
Condition
Standard
voltage
Reference voltage
(Approx.)
Connector
Terminal
(+)
(–)
Ignition
switch
Terminal
M101
2
1
OFF
9.5 - 16 V
Battery voltage
3
ON
Around view monitor control unit
Condition
Standard
voltage
Reference voltage
(Approx.)
Connector
Terminal
(+)
(–)
Ignition
switch
Terminal
M24
2
1
OFF
9.5 - 16 V
Battery voltage
4
ON
Around view monitor control unit
Ground
Continuity
Connector
Terminal
M101
1
Existed
Around view monitor control unit
Ground
Continuity
Connector
Terminal
M24
1
Existed
AV
MICROPHONE SIGNAL CIRCUIT
AV-243
< DTC/CIRCUIT DIAGNOSIS >
[WITH NAVIGATION]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
MICROPHONE SIGNAL CIRCUIT
Description
INFOID:0000000010714903
NAVI control unit supplies power to microphone. The microphone transmits the sound voice to the NAVI con-
trol unit.
Diagnosis Procedure
INFOID:0000000010714904
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 CONTINUITY BETWEEN NAVI CONTROL UNIT AND MICROPHONE CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect NAVI control unit harness connector and microphone harness connector.
3.
Check the continuity between NAVI control unit harness connector and microphone harness connector.
4.
Check continuity between NAVI control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK VOLTAGE MICROPHONE VCC
1.
Connect NAVI control unit harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between NAVI control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace NAVI control unit. Refer to
AV-262, "Removal and Installation"
3.
CHECK MICROPHONE SIGNAL
1.
Turn ignition switch OFF.
2.
Connect microphone harness connector.
3.
Turn ignition switch ON.
4.
Check the signal between NAVI control unit harness connector.
NAVI control unit
Microphone
Continuity
Connector
Terminal
Connector
Terminal
M28
34
R21
1
Existed
35
4
36
2
NAVI control unit
Ground
Continuity
Connector
Terminal
M28
34
Not existed
35
Terminal
Standard
Voltage
(Approx.)
NAVI control unit
(–)
Connector
Terminal
NAVI control unit
M28
35
Ground
—
5.0 V
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