Nissan Quest E52. Instruction — part 88
AV
MICROPHONE SIGNAL CIRCUIT
AV-231
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO WITH SEPARATE DISPLAY]
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MICROPHONE SIGNAL CIRCUIT
Description
INFOID:0000000009652070
TEL adapter unit supplies power to microphone. The microphone transmits the sound voice to the TEL
adapter unit.
Diagnosis Procedure
INFOID:0000000009652071
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-261, "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
AV-232
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO WITH SEPARATE DISPLAY]
MICROPHONE SIGNAL CIRCUIT
Is the inspection result normal?
YES
>> Replace TEL adapter unit. Refer to
AV-261, "Removal and Installation"
.
NO
>> Replace microphone. Refer to
AV-263, "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
CONTROL SIGNAL CIRCUIT
AV-233
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO WITH SEPARATE DISPLAY]
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CONTROL SIGNAL CIRCUIT
Description
INFOID:0000000009652072
TEL adapter unit identifies the vehicle model according to the control signal and performs the control.
Diagnosis Procedure
INFOID:0000000009652073
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-261, "Removal and Installation"
.
NO
>> Repair harness or connector.
TEL adapter unit
Ground
Standard
Reference value
(Approx.)
Connector
Terminals
M138
20
3.1 V or less
0 V
27
AV-234
< DTC/CIRCUIT DIAGNOSIS >
[BASE AUDIO WITH SEPARATE DISPLAY]
STEERING SWITCH SIGNAL A CIRCUIT
STEERING SWITCH SIGNAL A CIRCUIT
Description
INFOID:0000000009652074
Transmits the steering switch signal to AV control unit.
Diagnosis Procedure
INFOID:0000000009652075
1.
CHECK STEERING SWITCH SIGNAL A CIRCUIT
1.
Disconnect AV control unit connector and spiral cable connector.
2.
Check continuity between AV control unit harness connector and spiral cable harness connector.
3.
Check continuity between AV control 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 AV CONTROL UNIT VOLTAGE
1.
Connect AV control unit connector and spiral cable connector.
2.
Turn ignition switch ON.
3.
Check voltage between AV control unit harness connector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace AV control unit. Refer to
AV-250, "Removal and Installation"
.
4.
CHECK STEERING SWITCH
1.
Turn ignition switch OFF.
2.
Check steering switch. Refer to
AV-234, "Component Inspection"
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace steering wheel. Refer to
ST-12, "Removal and Installation"
Component Inspection
INFOID:0000000009652076
Measure the resistance between the steering switch connector terminals 14 to 17 and 15 to 17.
AV control unit
Spiral cable
Continuity
Connector
Terminal
Connector
Terminal
M171
6
M33
24
Existed
AV control unit
Ground
Continuity
Connector
Terminal
M171
6
Not existed
Probe
Standard
Voltage
(Approx.)
(+)
(
−
)
AV control unit
Connector
Terminal
Connector
Terminal
M171
6
M171
15
0 - 3.3 V
3.3 V
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