Nissan Altima (L32) 2007-2012 Service Manual: Microphone signal circuit (coupe)
Description
Voice signals are transmitted from the microphone to the Bluetooth control
unit using the microphone signal
circuits.
Diagnosis Procedure
1.CHECK HARNESS BETWEEN BLUETOOTH CONTROL UNIT AND MICROPHONE
1. Turn ignition switch OFF.
2. Disconnect Bluetooth control unit connector and microphone
connector.
3. Check continuity between Bluetooth control unit harness connector
B55 (A) and microphone harness connector R7 (B).
4. Check continuity between Bluetooth control unit harness connector B55 (A)
and ground.
Are the continuity test results as specified?
YES >> GO TO 2
NO >> Repair harness or connector.
2.CHECK MICROPHONE POWER SUPPLY
1. Connect Bluetooth control unit connector and microphone connector.
2. Turn ignition switch ON.
3. Check voltage between microphone harness connector R7 terminal
4 and ground.
Is voltage reading approx. 5 volts?
YES >> GO TO 3
NO >> Replace Bluetooth control unit. Refer to AV-235,
"Removal and Installation - Coupe".
3.CHECK MICROPHONE SIGNAL
Check signal between Bluetooth control unit harness connector B55
terminals 7 and 8.
Are voltage readings as specified?
YES >> Replace Bluetooth control unit. Refer to AV-235, "Removal and
Installation - Coupe".
NO >> Replace microphone. Refer to AV-233, "Removal and Installation".
SATELLITE RADIO TUNER
Description
Left and right channel audio signals are supplied from the satellite radio
tuner to the audio unit through the
sound signal circuits.
Diagnosis Procedur ...
Description
Voice signals are transmitted from the microphone to the Bluetooth control
unit using the microphone signal
circuits.
Diagnosis Procedure
1.CHECK HARNESS BETWEEN BLUETOOTH CONTROL UN ...
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using LATCH
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and Cautions in the "Child safety"
and "Child restraints" before installing
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Do not use the lower anchors if the combined
weight of the child and the child restraint
exceeds 65 lbs. (29.5 kg). If the combined
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Head restraints/headrests supplement
the other vehicle safety systems. They
may provide additional protection
against injury in certain rear end collisions.
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headrests must be adjusted properly,
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