Nissan Quest E52. Instruction — part 54
AV
MICROPHONE SIGNAL CIRCUIT
AV-95
< DTC/CIRCUIT DIAGNOSIS >
[DISPLAY AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Is the inspection result normal?
YES
>> Replace TEL adapter unit. Refer to
AV-118, "Removal and Installation"
NO
>> Replace microphone. Refer to
AV-120, "Removal and Installation"
.
Probe
Condition
Standard
Reference value
(+)
(+)
TEL adapter unit
Connector
Terminal
Connector
Terminal
M138
7
M138
8
Give a voice.
Waveform according to
voice is input.
PKIB5037J
AV-96
< DTC/CIRCUIT DIAGNOSIS >
[DISPLAY AUDIO]
CONTROL SIGNAL CIRCUIT
CONTROL SIGNAL CIRCUIT
Description
INFOID:0000000009651947
TEL adapter unit identifies the vehicle model according to the control signal and performs the control.
Diagnosis Procedure
INFOID:0000000009651948
1.
CHECK CONTINUITY CONTROL SIGNAL 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
>> Replace TEL adapter unit. Refer to
AV-118, "Removal and Installation"
NO
>> Repair harness or connector.
TEL adapter unit
Ground
Standard
Reference value
(Approx.)
Connector
Terminals
M138
22
3.1 V or less
0 V
24
27
AV
STEERING SWITCH SIGNAL A CIRCUIT (STEERING SWITCH TO TEL ADAPT-
ER UNIT)
AV-97
< DTC/CIRCUIT DIAGNOSIS >
[DISPLAY AUDIO]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
STEERING SWITCH SIGNAL A CIRCUIT (STEERING SWITCH TO TEL
ADAPTER UNIT)
Description
INFOID:0000000009651949
• Transmits the steering switch signal to TEL adapter unit.
• Transmits the steering switch signal to audio unit via TEL adapter unit.
Diagnosis Procedure
INFOID:0000000009651950
1.
CHECK STEERING SWITCH SIGNAL A (STEERING SWITCH TO TEL ADAPTER UNIT) CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect TEL adapter unit connector and spiral cable connector.
3.
Check continuity between TEL adapter unit harness connector and spiral cable 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 SPIRAL CABLE
Check spiral cable.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace spiral cable. Refer to
SR-15, "Removal and Installation"
3.
CHECK TEL ADAPTER UNIT VOLTAGE
1.
Connect TEL adapter unit connector and spiral cable connector.
2.
Turn ignition switch ON.
3.
Check voltage between TEL adapter unit harness connector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace TEL adapter unit. Refer to
AV-118, "Removal and Installation"
4.
CHECK STEERING SWITCH
1.
Turn ignition switch OFF.
2.
Check steering switch. Refer to
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace steering wheel. Refer to
ST-12, "Removal and Installation"
TEL adapter unit
Spiral cable
Continuity
Connector
Terminal
Connector
Terminal
M138
12
M33
24
Existed
TEL adapter unit
Ground
Continuity
Connector
Terminal
M138
12
Not existed
Probe
Standard
Voltage
(Approx.)
(+)
(
−
)
TEL adapter unit
Connector
Terminal
Connector
Terminal
M138
12
M138
14
0 - 5.25 V
5.0 V
AV-98
< DTC/CIRCUIT DIAGNOSIS >
[DISPLAY AUDIO]
STEERING SWITCH SIGNAL A CIRCUIT (STEERING SWITCH TO TEL ADAPT-
ER UNIT)
Component Inspection
INFOID:0000000009651951
Measure the resistance between the steering switch connector terminals 14 to 17 and 15 to 17.
Standard
Between terminals 14 and 17
switch ON
: 708 – 737
Ω
MENU DOWN switch ON
: 314 – 327
Ω
MENU UP switch ON
: 118 – 123
Ω
SOURCE switch ON
: Less than 1
Ω
Between terminals 15 and 17
switch ON
: 314 – 327
Ω
VOL UP switch ON
: 118 – 123
Ω
VOL DOWN switch ON
: Less than 1
Ω
JSNIA0216GB
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