Nissan Maxima Service and Repair Manual: Diagnosis system (audio unit)
Diagnosis Description
Self-diagnosis mode can perform the following items.
- Versions display
- Channel check diagnosis
- Key check diagnosis
- AV communication diagnosis
VERSIONS DISPLAY FUNCTION
- Turn ignition switch ON.
- Turn the audio unit off.
- While pressing "1" button, turn volume control dial clockwise or
counterclockwise for 30 clicks or more.

- Diagnosis default screen of audio display unit is displayed.
NOTE: Diagnosis default screen = All
icons and segments of the audio display unit are turned on.
- Pressing the AUDIO switch briefly displays the version display mode.
Pressing the AUDIO switch briefly switches to each version display.
Pressing and holding the AUDIO switch when displaying each software
version returns to the diagnosis default screen.

- Self-diagnosis mode is canceled when the ignition switch is turned OFF.
CHANNEL CHECK DIAGNOSIS FUNCTION
- Turn ignition switch ON.
- Turn the audio unit off.
- While pressing the "1" button, turn the volume control dial clockwise
or counterclockwise for 30 clicks or more.

- The diagnosis default screen of audio display unit is displayed.
NOTE: Diagnosis default screen = All icons and segments
of the audio display unit are turned on.
- Turning the TUNE/FOLDER dial clockwise displays the channel check mode.
Pressing and holding the AUDIO switch during each channel check or
waiting approximately 1 second after finishing all channel checks returns
to the diagnosis default screen.

- Self-diagnosis mode is canceled when the ignition switch is turned OFF.
KEY CHECK DIAGNOSIS FUNCTION
- Turn ignition switch ON.
- Turn the audio unit off.
- While pressing the "1" button, turn the volume control dial
clockwise or counterclockwise for 30 clicks or more.

- The diagnosis default screen of audio display unit is displayed.
NOTE: Diagnosis default screen = All
icons and segments of the audio display unit are turned on.
- Turning the TUNE/FOLDER dial counterclockwise displays the key check
mode, and the pressed switch name is shown. Pressing and holding the
AUDIO switch during the key check mode returns to the diagnosis default
screen.

- Self-diagnosis mode is canceled when the ignition switch is turned OFF.
AV COMMUNICATION DIAGNOSIS FUNCTION
- Turn ignition switch ON.
- Turn the audio unit off.
- While pressing the "6" button, turn the volume control dial clockwise
or counterclockwise for 30 clicks or more.

- Returns to diagnosis default screen and displays "AV DIAGNOSIS".
- Pressing the AUDIO switch briefly displays the AV communication
diagnosis mode. Pressing the AUDIO switch briefly again switches to each
AV communication display.

- Pressing the SEEK up switch displays the confirmation screen of "delete
error record". Press the SEEK down switch if returning from RECORD DEL
YES? to RECORD DEL NO? The item is automatically determined approximately
6 seconds after it is displayed. Then the display returns to AV TROUBLE
DEL display item.

- Self-diagnosis mode is canceled when the ignition switch is turned OFF
System Diagram
System Description
Refer to the owner's manual for Bluetooth telephone system operating
instructions. NOTE: Cellular
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Diagnosis Description
The Bluetooth control unit has two diagnostic checks. The first diagnostic
check is performed automatically every ignition cycle during control unit
initialization. The seco ...
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Shift lock system
System Diagram
System Description
The selector lever cannot be shifted from "P" position to any other position
unless the ignition switch is in the
ON position and the brake pedal is depressed.
Component Parts Location
BCM (view with combination meter
removed)
Stop la ...
B2192 ID discord, IMMU-ECM
Description
BCM performs the ID verification with ECM that allows the
engine to start. Start the engine if the ID is OK.
ECM prevents the engine from starting if the ID is not registered. BCM starts
the communication with ECM if
ignition switch is turned ON.
DTC Logic
DTC DETECTION LOGIC ...
Towing a trailer
Flat towing
Towing your vehicle with all four wheels on the
ground is sometimes called flat towing. This
method is sometimes used when towing a vehicle
behind a recreational vehicle, such as a motor
home.
CAUTION
Failure to follow these guidelines can
result in severe transmission damage ...