Nissan Quest E52. Instruction — part 69

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-155

< SYSTEM DESCRIPTION >

[BASE AUDIO WITH SEPARATE DISPLAY]

Vehicle CAN Diagnosis

• CAN communication status and error counter is displayed.
• The error counter displays “OK” if any malfunction was not

detected in the past and displays “0” if a malfunction is detected. It
increases by 1 if the condition is normal at the next ignition switch
ON cycle. The upper limit of the counter is 39.

• The error counter is erased if “Reset” is pressed.

NOTE:
“???” indicates UNKWN.

AV COMM Diagnosis

• Displays the communication status between AV control unit (mas-

ter unit) and each unit.

• The error counter displays “OK” if any malfunction was not

detected in the past and displays “0” if a malfunction is detected. It
increases by 1 if the condition is normal at the next ignition switch
ON cycle. The upper limit of the counter is 39.

• The error counter is erased if “Reset” is pressed.

NOTE:
“???” indicates UNKWN

Delete Unit Connection Log

Deletes any unit connection records and error records from the AV
control unit memory. (Clear the records of the unit that has been
removed.)

Initialize Settings

Items

Display (Current)

Malfunction counter

(Past)

Tx(HVAC)

OK / ???

OK / 0 – 39

Rx(ECM)

OK / ???

OK / 0 – 39

Rx(Cluster)

OK / ???

OK / 0 – 39

Rx(BCM)

OK / ???

OK / 0 – 39

Rx(HVAC)

OK / ???

OK / 0 – 39

Rx(USM)

OK / ???

OK / 0 – 39

Rx(VDC)

OK / ???

OK / 0 – 39

Rx(STRG)

OK / ???

OK / 0 – 39

JSNIA2235ZZ

Items

Status

(Current)

Counter

(Past)

C Tx(ITM–PrimarySW)

OK / ???

OK / 0 – 39

C Rx(PrimarySW–ITM)

OK / ???

OK / 0 – 39

C Rx(Video Dist–ITM)

OK / ???

OK / 0 – 39

C Rx(R.RemoteCont–ITM)

OK / ???

OK / 0 – 39

C Rx(BTHF–ITM)

OK / ???

OK / 0 – 39

JSNIA4355ZZ

JSNIA0154GB

AV-156

< SYSTEM DESCRIPTION >

[BASE AUDIO WITH SEPARATE DISPLAY]

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

“User Data Initialization” and “Accessory Number Initialization” are
possible.

CAUTION:

• Never perform Accessory Number Initialization except when

configuration is unsuccessful.

• Accessory Number Initialization requires configuration. For

details, refer to

AV-200, "Description"

CONSULT Function

INFOID:0000000009652011

APPLICATION ITEMS

CONSULT performs the following functions via the communication with the AV control unit.

AV Communication

When “AV communication” of “CAN Diag Support Monitor” is selected, the following function will be performed.

ECU IDENTIFICATION

The part number of AV control unit is displayed.

SELF DIAGNOSIS RESULT

• In CONSULT self-diagnosis, self-diagnosis results and error history are displayed collectively.
• The current malfunction indicates “CRNT”. The past malfunction indicates “PAST”.
• The timing is displayed as “0” if any of the error codes [U1000], [U1010], [U1300] and [U1310] is detected.

The counter increases by 1 if the condition is normal at the next ignition switch ON cycle.

Self-diagnosis Results Display Item

JSNIA2237ZZ

Diagnosis mode

Description

Ecu Identification

The part number of AV control unit can be checked.

Self Diagnostic Result

Performs a diagnosis on the AV control unit and a connection diagnosis for the communication
circuit of the Multi AV system, and displays the current and past malfunctions collectively.

Data Monitor

The diagnosis of vehicle signal that is input to the AV control unit can be performed.

Work Support

Steering angle sensor can be adjusted.

Configuration

• Read and save the vehicle specification.
• Write the vehicle specification when replacing AV control unit.

AV communication

AV&NAVI C/U

Displays the communication status from AV control unit to each unit as well as the error
counter.

AUDIO

Displays the AV control unit communication status and the error counter.

Error item

Description

Possible malfunction factor/Action to take

CAN COMM CIRCUIT [U1000]

CAN communication malfunction is de-
tected.

Refer to

AV-202, "Diagnosis Procedure"

CONTROL UNIT (CAN) [U1010]

CAN initial diagnosis malfunction is de-
tected.

Replace the AV control unit if the malfunc-
tion occurs constantly.
Refer to

AV-250, "Removal and Installa-

tion"

CONTROL UNIT (AV) [U1310]

AV communication circuit initial diagnosis
malfunction is detected.

Cont Unit [U1200]

AV control unit malfunction is detected.

CAN CONT [U1216]

ST ANGLE SEN CALIB [U1232]

Neutral position adjustment of the steering
angle sensor is incomplete.

Adjust the neutral position of the steering
angle sensor.
Refer to

AV-206, "Diagnosis Procedure"

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-157

< SYSTEM DESCRIPTION >

[BASE AUDIO WITH SEPARATE DISPLAY]

DATA MONITOR

NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.

All Signals

• Displays the status of the following vehicle signals inputted into the AV control unit.
• For each signal, actual signal can be compared with the condition recognized on the system.

FRONT DISP CONN [U1243]

When either one of the following items is
detected:
• front display unit power supply and

ground circuits malfunction is detected.

• communication circuits between AV

control unit and front display unit.

• Front display unit power supply and

ground circuits.
Refer to

AV-213, "FRONT DISPLAY

UNIT : Diagnosis Procedure"

• Communication circuits between AV

control unit and front display unit.

SAT CONN [U1255]

When either one of the following items are
detected:
• satellite radio tuner power supply and

ground circuits are malfunctioning.

• communication circuits between AV

control unit and satellite radio tuner are
malfunctioning.

• request signal circuit between AV con-

trol unit and satellite radio tuner are mal-
functioning.

• Satellite radio tuner power supply and

ground circuit.
Refer to

AV-215, "SATELLITE RADIO

TUNER : Diagnosis Procedure"

• Communication circuit between AV con-

trol unit and satellite radio tuner.

• Request signal circuit between AV con-

trol unit and satellite radio tuner.

• AV COMM CIRCUIT [U1300]
• SWITCH CONN [U1240]

When either one of the following items are
detected:
• multifunction switch power supply and

ground circuits are malfunctioning.