Infiniti F50. Manual — part 166
AUDIO
AV-29
C
D
E
F
G
H
I
J
L
M
A
B
AV
Power Supply Circuit Inspection
EKS000Y0
1.
CHECK FUSE
●
Make sure the following fuses of the BOSE speaker amplifier, audio unit, CD auto changer and rear con-
trol cancel switch are not blown. Refer to
PG-66, "FUSE BLOCK - JUNCTION BOX (J/B) NO.1"
"FUSE, FUSIBLE LINK AND RELAY BOX"
.
OK or NG
OK
>> GO TO 2.
NG
>> If fuse is blown be sure to eliminate cause of malfunction before installing new fuse. Refer to
Unit
Terminals
Signal name
Fuse No.
(+)
(-)
Connector
Terminal (Wire color)
BOSE speaker amplifier
B233
11 (L)
Ground
Battery power
J
B234
34 (OR/L)
Ground
ACC power
21
Audio unit
M86
73 (SB)
Ground
Battery power
52
M86
72 (L/OR)
Ground
ACC power
21
CD auto changer
M109
12 (SB)
Ground
Battery power
52
M109
16 (L/OR)
Ground
ACC power
21
AV-30
AUDIO
2.
CHECK POWER SUPPLY CIRCUIT
Disconnect the each unit connector. Check voltage between the fol-
lowing harness connector terminal (+) and ground (-).
OK or NG
OK
>> Inspection end.
NG
>> Check harness for open or short between each unit and
fuse or fusible link.
Audio System Does Not Turn On
EKS000Y1
1.
SELF-DIAGNOSIS
1.
Perform self-diagnosis. Refer to
for models with navigation system and
for models without navigation system.
OK or NG
OK
>> Replace audio unit.
NG
>> Check the malfunctioned area according to the self-diagnosis result.
Steering Switch Does Not Operate
EKS001JP
1.
SELF-DIAGNOSIS MODE OF MULTI-FUNCTION SWITCH
1.
Carry out the self-diagnosis mode in the self-diagnosis function.
2.
Push steering switch.
OK or NG
OK
>> GO TO 2.
NO
>> GO TO 3.
Unit
Terminal No.
Power
Source
Ignition
switch
Reference
voltage (V)
(+)
(-)
Connector
Terminal
(Wire
color)
BOSE
speaker
amplifier
B233
11 (L)
Ground
Battery
power
OFF
Battery
voltage
B234
34 (OR/L)
Ground
ACC
power
ACC
Battery
voltage
Audio unit
M86
73 (SB)
Ground
Battery
power
OFF
Battery
voltage
M86
72 (L/OR)
Ground
ACC
power
ACC
Battery
voltage
CD Auto
changer
M109
12 (SB)
Ground
Battery
power
OFF
Battery
voltage
M109
16 (L/OR)
Ground
ACC
power
ACC
Battery
voltage
SKIA3614E
Beep sound should operate.
AUDIO
AV-31
C
D
E
F
G
H
I
J
L
M
A
B
AV
2.
SELF-DIAGNOSIS MODE OF AV COMMUNICATION LINE
1.
Carry out the self-diagnosis mode in the self-diagnosis function. Refer to
(with navigation system) or refer to
.
Dose self–diagnosis start?
YES
>> With self-diagnosis results, check the malfunction part.
NO
>>
●
Check multi-function switch of power supply and ground circuit check. Refer to
tion of Multifunction Switch for Power Supply and Ground Circuit"
.
●
Check harness between multi-function switch and AV and NAVI control unit or AV control unit.
3.
CHECK STEERING SWITCH CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect steering switch connector and multi-function switch connector.
3.
Check the following.
–
Continuity between steering switch harness connector M444 terminal 2 (L) and multi-function switch har-
ness connector M83 terminal 7 (GY/L).
–
Continuity between steering switch harness connector M444 terminal 2 (L) and ground.
OK or NG
OK
>> GO TO 4.
NG
>> Check the following.
●
Harness between for open or short steering switch and spiral cable.
●
Connector housing terminal for disconnection and looseness.
4.
CHECK HORN OPERATION
1.
Check horn operation.
OK or NG
OK
>> GO TO 5.
NG
>> Check horn system.
5.
CHECK POWER SUPPLY CIRCUIT
1.
Connect steering switch connector.
2.
Turn the ignition switch ON.
3.
Check harness between steering switch harness connector
M444 terminal 1(R) and ground.
OK or NG
OK
>> GO TO 6
NG
>> Check harness for open or short between steering
switch and horn relay [located in fuse, fusible link and
relay block (J/B)]
Terminals
Continuity
(+)
(–)
Connector
Terminal
(Wire color)
Connector
Terminal
(Wire color)
M444
2 (L)
M83
7 (GY/L)
Yes
M444
2 (L)
Ground
No
SKIA0537E
Horn should operate.
Battery voltage should exist.
SKIA0538E
AV-32
AUDIO
6.
CHECK STEERING SWITCH GROUND CIRCUIT
1.
Disconnect steering switch connector.
2.
Check harness between steering switch harness connector
M444 terminal 3 (B) and ground.
OK or NG
OK
>> Replace steering switch.
NG
>> Repair or replace harness.
Rear Control Switch Audio Operation Does Not Work
EKS001JQ
1.
CONFIRM OF OPERATION
1.
Is it activated by normal audio operation?
YES or NO
YES
>> GO TO 2.
NO
>> Refer to
AV-30, "Audio System Does Not Turn On"
2.
SELF-DIAGNOSIS
1.
Carry out the self-diagnosis mode in the self-diagnosis function. For models with navigation, refer to
, and for models without navigation, refer to
Is the self-diagnosis result OK?
OK
>> GO TO 3.
NG
>> With self-diagnosis results, check the faulty part.
3.
REAR CONTROL SWITCH OPEN OR SHORT CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect rear control switch connector and multi-function switch connector.
3.
Check the following.
–
Continuity harness between rear control switch harness connector B502 terminal 10(Y) and multi-func-
tion switch harness connector M83 terminal 8 (Y).
–
Continuity between rear control switch harness connector B502 terminal 10 (Y) and ground.
OK or NG
OK
>> Replace rear control switch.
NG
>> Repair or replace harness.
Continuity should exist.
SKIA0539E
Terminals
Continuity
(+)
(–)
Connector
Terminal
(Wire color)
Connector
Terminal
(Wire color)
B502
10 (Y)
M83
8 (Y)
Yes
B502
10 (Y)
Ground
No
SKIA0540E
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