Infiniti QX56 (Z62). Manual — part 80
AV-174
< DTC/CIRCUIT DIAGNOSIS >
IMAGE SWITCH SIGNAL CIRCUIT
Is the inspection result normal?
YES
>> Replace video distributor. Refer to
AV-215, "Removal and Installation"
.
NO
>> Replace headrest display unit LH (RH). Refer to
M217
9
Ground
When DVD, USB or front AUX
image is displayed on headrest
display unit RH.
0.5 V
When rear AUX image is dis-
played on headrest display unit
RH.
4.5 V
10
When DVD, USB or front AUX
image is displayed on headrest
display unit LH.
0.5 V
When rear AUX image is dis-
played on headrest display unit
LH.
4.5 V
AV
LOCATION RECOGNITION SIGNAL CIRCUIT
AV-175
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
LOCATION RECOGNITION SIGNAL CIRCUIT
Description
INFOID:0000000006216340
The headrest display unit operates by recognizing a mounting position by the input of the location recognition
signal.
Diagnosis Procedure
INFOID:0000000006216341
1.
CHECK CONTINUITY LOCATION RECOGNITION SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect headrest display unit connector LH (RH).
3.
Check continuity between headrest display unit connector LH (RH) harness connector and ground.
*1: Headrest display unit LH
*2: Headrest display unit RH
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
Headrest display unit
Ground
Continuity
Connector
Terminals
B554
*1
10
Existed
B574
*2
9
AV-176
< DTC/CIRCUIT DIAGNOSIS >
DISK EJECT SIGNAL CIRCUIT
DISK EJECT SIGNAL CIRCUIT
Description
INFOID:0000000006216342
The eject signal is output to AV control unit when the eject switch of multifunction switch is pressed.
Diagnosis Procedure
INFOID:0000000006216343
1.
CHECK CONTINUITY DISK EJECT SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect multifunction switch connector and AV control unit connector.
3.
Check continuity between multifunction switch harness connector and AV control unit harness connector.
4.
Check continuity between multifunction switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK AV CONTROL UNIT VOLTAGE
1.
Connect multifunction switch connector and AV control unit connector.
2.
Turn ignition switch ON.
3.
Check voltage between AV control unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace preset switch. Refer to
AV-227, "Removal and Installation"
NO
>> Replace AV control unit. Refer to
AV-212, "Removal and Installation"
.
Multifunction switch
AV control unit
Continuity
Connector
Terminal
Connector
Terminal
M72
14
M209
29
Existed
Multifunction switch
Ground
Continuity
Connector
Terminal
M72
14
Not existed
(+)
(
−
)
Condition
Voltage
(Approx.)
AV control unit
Connector
Terminal
M209
29
Ground
Pressing the eject switch
0 V
Except for above
5.0 V
AV
MODE CHANGE SIGNAL CIRCUIT
AV-177
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
MODE CHANGE SIGNAL CIRCUIT
Description
INFOID:0000000006216344
• AV control unit transmits the mode change signal to BOSE amp.
• Driver's Audio Stage controls the speaker's output characteristic by BOSE amp. so that the driver's seat is to
be the center of sounds.
Diagnosis Procedure
INFOID:0000000006216345
1.
CHECK CONTINUITY MODE CHANGE SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BOSE amp. connector and AV control unit connector.
3.
Check continuity between BOSE amp. harness connector and AV control unit harness connector.
4.
Check continuity between BOSE amp. harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK MODE CHANGE SIGNAL
1.
Connect BOSE amp. connector and AV control unit connector.
2.
Turn ignition switch ON.
3.
Check voltage between BOSE amp. harness connector and ground.
Is the inspection result normal?
YES
>> Replace BOSE amp. Refer to
AV-223, "Removal and Installation"
NO
>> Replace AV control unit. Refer to
AV-212, "Removal and Installation"
.
AV control unit
BOSE amp.
Continuity
Connector
Terminal
Connector
Terminal
M209
30
B230
37
Existed
BOSE amp.
Ground
Continuity
Connector
Terminal
B230
37
Not existed
(+)
(
−
)
Condition
Voltage
(Approx.)
BOSE amp.
Connector
Terminal
B230
37
Ground
Driver's Audio Stage ON.
0 V
Driver's Audio Stage OFF.
8.5 V
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст