Nissan Quest E52. Instruction — part 53
AV
POWER SUPPLY AND GROUND CIRCUIT
AV-91
< DTC/CIRCUIT DIAGNOSIS >
[DISPLAY AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between TEL adapter unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness between TEL adapter unit and fuse.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect TEL adapter unit connector.
3.
Check continuity between TEL adapter unit harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
Signal name
TEL adapter unit
Probe
Condition
Standard
Reference value
Terminal
Connector
(+)
(
−
)
Ignition switch
Battery power supply
M138
1
4
OFF
9.0 - 16.0 V
Battery voltage
ACC power supply
2
ACC
7.0 - 16.0 V
Signal name
Connector
Terminal
Ignition switch position
Continuity
Ground
M138
4
OFF
Existed
AV-92
< DTC/CIRCUIT DIAGNOSIS >
[DISPLAY AUDIO]
CAMERA IMAGE SIGNAL CIRCUIT
CAMERA IMAGE SIGNAL CIRCUIT
Description
INFOID:0000000009651943
• The audio unit supplies power to the rear view camera when receiving a reverse signal.
• The rear view camera transmits camera images to the audio unit when power is supplied from the audio unit.
Diagnosis Procedure
INFOID:0000000009651944
1.
CHECK CONTINUITY CAMERA POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect audio unit connector and rear view camera connector.
3.
Check continuity between audio unit harness connector and rear view camera harness connector.
4.
Check continuity between audio unit harness connector and ground.
Is inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK VOLTAGE CAMERA POWER SUPPLY
1.
Connect audio unit connector and rear view camera connector.
2.
Turn ignition switch ON.
3.
Shift the selector lever to “R”.
4.
Check voltage between audio unit harness connector.
Is inspection result normal?
YES
>> GO TO 3.
NO
>> Replace audio unit. Refer to
AV-112, "Removal and Installation"
.
3.
CHECK CONTINUITY CAMERA IMAGE SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect audio unit connector and rear view camera connector.
3.
Check continuity between audio unit harness connector and rear view camera harness connector.
4.
Check continuity between audio unit harness connector and ground.
Audio unit
Rear view camera
Continuity
Connector
Terminal
Connector
Terminal
M93
35
D167
1
Existed
Audio unit
Ground
Continuity
Connector
Terminal
M93
35
Not existed
Probe
Standard
Voltage
(Approx.)
(+)
(
−
)
Audio unit
Connector
Terminal
Connector
Terminal
M93
35
M93
36
5.9 - 6.5 V
6.2 V
Audio unit
Rear view camera
Continuity
Connector
Terminal
Connector
Terminal
M93
34
D167
3
Existed
AV
CAMERA IMAGE SIGNAL CIRCUIT
AV-93
< DTC/CIRCUIT DIAGNOSIS >
[DISPLAY AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Is inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
4.
CHECK CAMERA IMAGE SIGNAL
1.
Connect audio unit connector and rear view camera connector.
2.
Turn ignition switch ON.
3.
Shift the selector lever to “R”.
4.
Check signal between audio unit harness connector.
Is inspection result normal?
YES
>> Replace audio unit. Refer to
AV-112, "Removal and Installation"
NO
>> Replace rear view camera. Refer to
AV-116, "Removal and Installation"
.
Audio unit
Ground
Continuity
Connector
Terminal
M93
34
Not existed
Probe
Condition
Standard
Reference value
(+)
(+)
Audio unit
Connector
Terminal
Connector
Terminal
M93
34
M93
36
When cam-
era image is
displayed.
Waveform according to
camera image is input.
SKIB2251J
AV-94
< DTC/CIRCUIT DIAGNOSIS >
[DISPLAY AUDIO]
MICROPHONE SIGNAL CIRCUIT
MICROPHONE SIGNAL CIRCUIT
Description
INFOID:0000000009651945
TEL adapter unit supplies power to microphone. The microphone transmits the sound voice to the TEL
adapter unit.
Diagnosis Procedure
INFOID:0000000009651946
1.
CHECK CONTINUITY BETWEEN TEL ADAPTER UNIT AND MICROPHONE CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect TEL adapter unit connector and microphone connector.
3.
Check continuity between TEL adapter unit harness connector and microphone harness connector.
4.
Check continuity between TEL adapter 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 TEL adapter unit connector.
2.
Turn ignition switch ON.
3.
Check voltage between TEL adapter unit harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace TEL adapter unit. Refer to
AV-118, "Removal and Installation"
3.
CHECK MICROPHONE SIGNAL
1.
Connect microphone connector.
2.
Check signal between TEL adapter unit harness connector.
TEL adapter unit
Microphone
Continuity
Connector
Terminals
Connector
Terminals
M138
7
R20
1
Existed
8
2
29
4
TEL adapter unit
Ground
Continuity
Connector
Terminals
M138
29
Not existed
7
Probe
Standard
Voltage
(Approx.)
(+)
(
−
)
TEL adapter unit
Connector
Terminal
Connector
Terminal
M138
29
M138
8
4.7 - 5.3 V
5.0 V
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