Nissan Altima 2007-2012 Service Manual: ECU diagnosis
Sound signal circuit (sedan)
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 Procedure
LEF ...
Audio unit (coupe)
Reference Value
TERMINAL LAYOUT
PHYSICAL VALUES
Wiring Diagram — Coupe
...
Other materials:
Power control system
System Diagram
System Description
COOLING FAN CONTROL
IPDM E/R controls cooling fans according to the status of the cooling fan
speed request signal received from
ECM via CAN communication. Refer to LAN-7, "System Description".
GENERATOR CONTROL
IPDM E/R outputs power generation ...
Microphone
Diagnosis Procedure
1.CHECK POWER SUPPLY CIRCUIT (MICROPHONE SIDE)
Check voltage between microphone harness connector and ground.
Is proper voltage present?
YES >> GO TO 4
NO >> GO TO 2
2.CHECK POWER SUPPLY CIRCUIT (CONTINUITY)
1. Turn ignition switch OFF.
2. Disconnect Blu ...
Communication signal circuit (sedan) satellite radio tuner
Description
Communication signals are exchanged between the audio unit and satellite
radio tuner using the communication
circuits.
Diagnosis Procedure
1.CHECK HARNESS - 1
1. Turn ignition switch OFF.
2. Disconnect satellite radio tuner (factory installed) connector
B123 and au ...