Nissan Leaf. Manual — part 78
AV
STEERING SWITCH
AV-303
< DTC/CIRCUIT DIAGNOSIS >
[NAVIGATION WITHOUT BOSE]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
STEERING SWITCH
Diagnosis Procedure
INFOID:0000000010122569
Regarding Wiring Diagram information, refer to
.
1.
CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE
1. Turn power switch OFF.
2. Disconnect combination switch connector M112.
3. Check resistance between the terminals of combination switch connector M112.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace steering switches. Refer to
AV-327, "Removal and Installation"
.
2.
CHECK COMBINATION SWITCH
Check continuity between combination switch connectors M112 and M92.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace spiral cable. Refer to
SR-23, "Removal and Installation"
3.
CHECK HARNESS BETWEEN COMBINATION SWITCH AND AV CONTROL UNIT
1. Disconnect AV control unit connector M95.
2. Check continuity between combination switch connector M92 and AV control unit connector M95.
Combination switch connector M112
Condition
Resistance
Ω
(Approx.)
Terminal
Terminal
14
17
Depress SOURCE switch.
1
Depress
switch.
121
Depress
switch.
321
Depress
switch.
723
15
Depress
switch.
1
Depress
switch.
121
Depress
switch.
321
Combination switch
Continuity
Connector
Terminal
Connector
Terminal
M112
14
M92
24
Yes
15
31
17
33
Combination switch
AV control unit
Continuity
Connector
Terminal
Connector
Terminal
M92
24
M95
6
Yes
31
16
33
15
AV-304
< DTC/CIRCUIT DIAGNOSIS >
[NAVIGATION WITHOUT BOSE]
STEERING SWITCH
3. Check continuity between combination switch connector M92 and ground.
Is the inspection result normal?
YES
>> Replace AV control unit. Refer to
AV-318, "Removal and Installation"
.
NO
>> Repair or replace harness or connectors.
Combination switch
Ground
Continuity
Connector
Terminal
M92
24
—
No
31
33
AV
USB CONNECTOR
AV-305
< DTC/CIRCUIT DIAGNOSIS >
[NAVIGATION WITHOUT BOSE]
C
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USB CONNECTOR
Diagnosis Procedure
INFOID:0000000010122570
Regarding Wiring Diagram information, refer to
.
1.
CHECK USB HARNESS CONTINUITY
1. Turn power switch OFF.
2. Disconnect AV control unit connector M98 and USB connector M53.
3. Check continuity between AV control unit connector M98 and USB connector M53.
4. Check continuity between AV control unit connector M98 and ground.
Is the inspection result normal?
YES
>> Replace the USB connector. Refer to
AV-329, "Removal and Installation"
NO
>> Repair or replace harness or connectors.
AV control unit
USB
Continuity
Connector
Terminal
Connector
Terminal
M98
78
M53
2
Yes
79
1
80
4
81
3
82
5
AV control unit
—
Continuity
Connector
Terminal
M98
79
Ground
No
82
AV-306
< SYMPTOM DIAGNOSIS >
[NAVIGATION WITHOUT BOSE]
MULTI AV SYSTEM
SYMPTOM DIAGNOSIS
MULTI AV SYSTEM
Symptom Table
INFOID:0000000010122571
RELATED TO AUDIO
Symptoms
Check items
Probable malfunction location
The disk cannot be removed.
AV control unit
Malfunction in AV control unit.
Refer to
AV-238, "On Board Diagnosis Function"
No sound comes out or the level of
the sound is low.
No sound from all speakers.
• Speaker circuit shorted to ground.
Refer to
.
• AV control unit power supply and ground circuits
malfunction.
Refer to
AV-291, "AV CONTROL UNIT : Diagnosis
.
Only a certain speaker (front door
speaker LH, front door speaker RH,
tweeter LH, tweeter RH, rear door
speaker LH, rear door speaker RH does
not output sound.
• Poor connector connection of speaker.
• Sound signal circuit malfunction between AV con-
trol unit and speaker.
Refer to:
-
er).
-
-
(rear door speak-
er).
• Malfunction in speaker.
Refer to:
-
AV-320, "Removal and Installation"
(front door
speaker).
-
AV-321, "Removal and Installation"
(tweeter).
-
AV-322, "Removal and Installation"
(rear door
speaker).
• Malfunction in AV control unit.
Refer to
AV-238, "On Board Diagnosis Function"
Noise is mixed with audio.
Noise comes out from all speakers.
• Malfunction in AV control unit.
Refer to
AV-238, "On Board Diagnosis Function"
Noise comes out only from a certain
speaker (front door speaker LH, front
door speaker RH, tweeter LH, tweeter
RH, rear door speaker LH, rear door
speaker RH).
• Poor connector connection of speaker.
• Sound signal circuit malfunction between AV con-
trol unit and speaker.
Refer to:
-
er).
-
-
(rear door speak-
er).
• Malfunction in speaker.
• Poor Installation of speaker (e.g. backlash and
looseness).
Refer to:
-
AV-320, "Removal and Installation"
(front door
speaker).
-
AV-321, "Removal and Installation"
(tweeter).
-
AV-322, "Removal and Installation"
(rear door
speaker).
• Malfunction in AV control unit.
Refer to
AV-238, "On Board Diagnosis Function"
Noise is mixed with radio only (when the
vehicle hits a bump or while driving over
bad roads)
Poor connector connection of antenna or antenna
feeder.
Refer to
.
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