Nissan Altima 2007-2012 Service Manual: Microphone signal circuit (sedan)
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 B126 (A) and microphone harness connector R7 (B).
4. Check continuity between Bluetooth control unit harness connector B126 (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 - Sedan".
3.CHECK MICROPHONE SIGNAL
Check signal between Bluetooth control unit harness connector B126 terminals 7 and 8.
Are voltage readings as specified? YES >> Replace Bluetooth control unit. Refer to AV-235, "Removal and Installation - Sedan".
NO >> Replace microphone. Refer to AV-233, "Removal and Installation".
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 U ...
ECU diagnosis
...
Other materials:
P0037, P0038 HO2S2 heater
Description
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater
corresponding to the engine speed,
amount of intake air and engine coolant temperature.
OPERATION
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Con ...
Combination meter
Reference Value
TERMINAL LAYOUT
PHYSICAL VALUES
Wiring Diagram - Coupe
Wiring Diagram - Sedan
Fail Safe
The combination meter performs a fail-safe operation for the functions listed
below when communication is
lost ...
NISSAN Intelligent Key® Without Door and Trunk Request Switches
WARNING
● Radio waves could adversely affect
electric medical equipment. Those who
use a pacemaker should contact the
electric medical equipment manufacturer
for the possible influences before
use.
● The Intelligent Key transmits radio
waves when the buttons are pressed.
The F ...