On Board Diagnosis Function

METHOD OF STARTING 

1. Ignition switch ON.
2. Turn the audio system OFF.
3. While pressing the AUDIO button, turn the VOL dial counterclockwise for 3 clicks or more, clockwise for 3 clicks or more, counterclockwise for 3 clicks or more. Shifting from current screen to previous screen is performed by pressing BACK button.

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4. The trouble diagnosis initial screen is displayed, and "Self Diagnosis" and "Confirmation/Adjustment" can be selected.

SELF-DIAGNOSIS MODE 

1. Start the self-diagnosis function and select "Self Diagnosis".
   • Self-diagnosis subdivision screen is displayed, and the self-diagnosis mode starts.
   • The bar graph visible on the center of the self-diagnosis subdivision screen indicates progress of the trouble diagnosis.
2. Diagnosis results are displayed after the self-diagnosis is completed. The unit names and the connection lines are color-coded according to the diagnostic results.

   Diagnosis results	Unit	Connection line
   Normal	Green	Green
   Connection malfunction	Gray	Yellow
   Unit malfunction Note	Red	Green

   NOTE: AV control unit (Head Unit) is displayed in red.

   • Replace AV control unit if "Self-Diagnosis did not run because of a control unit malfunction" is indicated. The symptom is AV control unit internal error. Refer to Removal and Installation .
   • If multiple errors occur at the same time for a single unit, the screen switch colors are determined according to the following order of priority: red > gray.
3. MCAN, Head Unit and VCAN are displayed:
   • Press the MCAN button and the system components connected via AV communication are displayed.
   • Press the Head Unit button and the components connected to the AV control unit are displayed.
   • Press the VCAN button and the system components connected via CAN communication are displayed. Refer to Trouble Diagnosis Flow Chart for CAN communication diagnosis.

Detection Range of Self-Diagnosis Mode 

• The self-diagnosis mode allows the technician to diagnose the connection in the communication line between AV control unit and each unit and the internal operation of the AV control unit.
• Because the start condition of diagnosis function is a switch operation, the on board diagnosis function cannot be started if any malfunction is detected in the communication circuit between AV control unit and integral switch.

SELF-DIAGNOSIS RESULTS 

Only Unit Part Is Displayed In Red (MCAN) 

Screen switch	Description	Possible malfunction location / Action to take
Head Unit	Malfunction is detected in AV control unit power supply and ground circuits.	Check AV control unit power supply and ground circuits. Refer to Diagnosis Procedure .When no malfunction is detected in those circuits, replace AV control unit. Refer to Removal and Installation .
Sep. AMP	Malfunction is detected in Bose speaker amp. power supply and ground circuits.	Check Bose speaker amp. power supply and ground circuits. Refer to Diagnosis Procedure .When no malfunction is detected in those circuits, replace Bose speaker amp. Refer to Removal and Installation .
TCU	Malfunction is detected in TCU power supply and ground circuits.	Check TCU power supply and ground circuits. Refer to Diagnosis Procedure . When no malfunction is detected in those circuits, replace TCU. Refer to Removal and Installation .
ISW	Malfunction is detected in head up display unit power supply and ground circuits.	Check head up display unit power supply and ground circuits. Refer to Diagnosis Procedure . When no malfunction is detected in those circuits, replace head up display unit. Refer to Removal and Installation .
Meter	Malfunction is detected in combination meter power supply and ground circuits.	Check combination meter power supply and ground circuits. Refer to Diagnosis Procedure . When no malfunction is detected in those circuits, replace combination meter. Refer to Removal and Installation .
Sec Display	Malfunction is detected in integral switch power supply and ground circuits.	Check integral switch power supply and ground circuits. Refer to Diagnosis Procedure .When no malfunction is detected in those circuits, replace integral switch. Refer to Removal and Installation .

Only Unit Part Is Displayed In Red (Head Unit) 

Screen switch	Description	Possible malfunction location / Action to take
Head Unit	Malfunction is detected in AV control unit power supply and ground circuits.	Check AV control unit power supply and ground circuits. Refer to Diagnosis Procedure .When no malfunction is detected in those circuits, replace AV control unit. Refer to Removal and Installation .
Amplifier	Malfunction is detected in the internal amplifier of the AV control unit.	Replace the AV control unit. Refer to Removal and Installation. Refer to Removal and Installation .
Conn Modules	Malfunction is detected in the internal Bluetooth® module of the AV control unit.	Replace the AV control unit. Refer to Removal and Installation. Refer to Removal and Installation .
Antenna	Malfunction is detected in antenna signal circuit.	Check antenna signal circuit. Refer to Diagnosis Procedure . When no malfunction is detected in the circuit, replace antenna. Refer to Removal and Installation .
XM	Malfunction is detected in satellite antenna signal circuit.	Check satellite antenna signal circuit. Refer to Diagnosis Procedure . When no malfunction is detected in the circuit, replace satellite antenna. Refer to Removal and Installation .
GPS	Malfunction is detected in GPS antenna signal circuit.	Check GPS antenna signal circuit. Refer to Diagnosis Procedure . When no malfunction is detected in the circuit, replace GPS antenna. Refer to Removal and Installation .
LVDS	Malfunction is detected in the LVDS harness for the display unit. Malfunction is detected in the LVDS harness for the integral switch.	Replace the LVDS harness.
Microphone	Malfunction is detected in microphone signal circuit.	Check microphone signal circuit. Refer to DTC Diagnosis Procedure . When no malfunction is detected in the circuit, replace microphone switch. Refer to Removal and Installation .
USB	Malfunction is detected in the USB harness for the front auxiliary input jacks control unit. Malfunction is detected in the USB harness for the TCU.	Replace the USB harness.
FAN	Malfunction is detected in the internal fan of the AV control unit.	Replace the AV control unit. Refer to Removal and Installation .

A Connecting Cable Between Units Is Displayed In Yellow (MCAN) 

Area with yellow connection lines	Description	Possible malfunction location / Action to take
Head Unit ↔ Sep. AMP	Bose speaker amp. AV communication connection malfunction detected.	AV communication circuits between AV control unit and Bose speaker amp. Refer to Diagnosis Procedure .
Head Unit ↔ TCU	TCU AV communication connection malfunction detected.	AV communication circuits between AV control unit and TCU. Refer to Diagnosis Procedure .
Head unit ↔ ISW	Head up display unit AV communication connection malfunction detected.	AV communication circuits between AV control unit and head up display unit. Refer to Diagnosis Procedure .
Head unit ↔ Meter	Combination meter AV communication connection malfunction detected.	AV communication circuits between AV control unit and combination meter. Refer to Diagnosis Procedure .
Head unit ↔ Sec Display	Integral switch AV communication connection malfunction detected.	AV communication circuits between AV control unit and integral switch. Refer to Diagnosis Procedure .

A Connecting Cable Between Units Is Displayed In Yellow (Head Unit) 

Area with yellow connection lines	Description	Possible malfunction location / Action to take
Head Unit ↔ Amplifier	Internal amplifier malfunction detected.	Replace the AV control unit. Refer to Removal and Installation .
Head Unit ↔ Conn Modules	Internal Bluetooth® module malfunction detected.	Replace the AV control unit. Refer to Removal and Installation .
Head Unit ↔ Antenna	Antenna connection malfunction detected.	Antenna disconnected. Refer to Diagnosis Procedure .
Head Unit ↔ XM	Satellite antenna connection malfunction detected.	Satellite antenna disconnected. Refer to Diagnosis Procedure .
Head Unit ↔ GPS	GPS antenna connection malfunction detected.	GPS antenna disconnected. Refer to Diagnosis Procedure .
Head unit ↔ LVDS	LVDS harness for display unit connection malfunction detected. LVDS harness for integral switch connection malfunction detected.	LVDS harness disconnected.
Head Unit ↔ Microphone	Microphone connection malfunction detected.	Microphone disconnected. Refer to DTC Diagnosis Procedure .
Head unit ↔ USB	USB harness for front auxiliary input jacks control unit connection malfunction detected. USB harness for TCU connection malfunction detected.	USB harness disconnected.
Head Unit ↔ FAN	Internal fan malfunction detected.	Replace the AV control unit. Refer to Removal and Installation .

CONFIRMATION/ADJUSTMENT MODE 

1. Start the diagnosis function and select "Confirmation/Adjustment". The confirmation/adjustment mode indicates where each item can be checked or adjusted.
2. Select each switch on the "Confirmation/Adjustment Mode" screen to display the relevant trouble diagnosis screen. Touch the "Back" to return to the initial Confirmation/Adjustment Mode screen.

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Display Diagnosis 

Confirmation of the AV control unit screen operation.

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Vehicle Signals 

A comparison check can be made of each actual vehicle signal and the signals recognized by the system.

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Navigation 

The reception status of GPS can be confirmed.

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Error Location Display 

Results of the error occurrence are represented by the time the error occurred.

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AV COMM Diagnosis 

AV COMM Monitor

• Displays the communication status between AV control unit (master 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.

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Camera 

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Item	Description
Correct Draw Line of Rear view Camera	The guiding lines in the rear view monitor can be adjusted.
Alter/Confirm Configuration	Displays the current configuration data.
Reset Configuration	Initializes the camera system configuration.

Delete Unit Connection Log 

Deletes error records from the AV control unit memory.

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Initialize Settings 

Initializes the AV control unit memory.

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GPS Time Set 

Date and time information can be adjusted.

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Version Information 

Version information of the components of the Multi AV system are displayed.

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Software Update 

Version of the AV control unit software can be update.

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### Speaker Test 

Two test tones, 100Hz and 4KHz, can be generated to each speaker.

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Radio Tuner 

Displays FM and AM monitor information.

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SXM 

Displays SXM monitor information.

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