Home ReviewsRefund
Home/Infiniti/QX56/Infiniti QX56 I рестайлинг (2007-2010)/Repair manual/Antenna Systems/Audio, Visual, Navigation System: Overview
Contents Section: Antenna Systems All sections

Audio, Visual, Navigation System: Overview Infiniti QX56 I рестайлинг

Antenna Systems 48 illustrations ~6148 words

Work Flow Chart. Scheme 1

Scheme 1: Work Flow Chart
Scheme 1: Work Flow Chart
  1. Reference 1... Refer to " «AV CONTROL UNIT : CONSULT-III FUNCTION»(ref-308592-S05243652102009021300000) ".
  2. Reference 2... Refer to " «SYMPTOM TABLE»(ref-308592-S05870047772009021300000) ".

REAR VIEW MONITOR GUIDING LINE ADJUSTMENT : Description

This mode is used to modify the side distance guidelines if they are dislocated from the rear view monitor image, because of variations of body/camera mounting conditions.

Scheme 2

Scheme 2: REAR VIEW MONITOR GUIDING LINE ADJUSTMENT : Special Repair Requirement
Scheme 2: REAR VIEW MONITOR GUIDING LINE ADJUSTMENT : Special Repair Requirement

Scheme 3

Scheme 3
Scheme 3
  1. Create a correction line to modify the screen. Draw lines on the rearward of the vehicle passing through the following points: 200 mm (7.87 inch) from both sides of the vehicle, and *1: 0.5 m (1.5 feet) *2: 1 m (3 feet) *3: 2 m (7 feet) *4: 3 m (10 feet) and from the rear end of the bumper
  2. With the ignition switch OFF, connect CONSULT-III, then turn ignition switch ON. Select "REARVIEW CAMERA". CAUTION: Stop engine for safety when correcting side distance guideline. (Scheme 2): Identifying Distance From Rear End Of Vehicle
  3. Shift the A/T selector lever to R position.
  4. Touch "SELECT GUIDELINE PATTERN" under "WORK SUPPORT" menu. (Scheme 3): Identifying A/T Selector Lever Position
  5. Touch "UP" or "DOWN", and select the guide line, "PATTERN NO. 0" or "PATTERN NO. 1", which is the closest to the corrected line.
  6. Touch "SAVE", and confirm the guide line.
  7. Touch "END".
  8. Touch "ADJ GUIDELINE POSITION" under the "WORK SUPPORT" menu.
  9. Adjust the guide line touching "X UP", "X DOWN", "Y UP" or "Y DOWN" so that the corrected line can fit the guide line.
  10. Touch "SAVE", and confirm the guide line.
  11. Touch "END" to finish correcting.

Audio System - System Diagram. Scheme 4

Scheme 4: Audio System - System Diagram
Scheme 4: Audio System - System Diagram

Component Description

Part nameDescription
AV control unitControls audio system, NAVI functions and satellite radio system functions
Display unitTouch screen controls all audio and A/C operations Displays all audio and climate control related information
BOSE speaker amp.Receives power (amp ON) and audio signals from AV control unit and outputs audio signals to each speaker.
Steering switchesAudio operation can be operated Steering switch signal is output to AV control unit
Front door speakersOutputs audio signal from BOSE speaker amp. Outputs high, mid and low range sounds
Front tweetersOutputs audio signal from BOSE speaker amp. Outputs high range sounds
Center speakerOutputs audio signal from BOSE speaker amp. Outputs high range sounds
Rear door speakersOutputs audio signal from BOSE speaker amp. Outputs high, mid and low range sounds
Rear door tweetersOutputs audio signal from BOSE speaker amp. Outputs high range sounds
Back door speakersOutputs audio signal from BOSE speaker amp. Outputs high, mid and low range sounds
SubwooferOutputs audio signal from BOSE speaker amp. Outputs low range sounds
Satellite antennaAudio signal (satellite radio) is received and output to AV control unit.

COMPONENT DESCRIPTION

Navigation System - System Diagram. Scheme 5

Scheme 5: Navigation System - System Diagram
Scheme 5: Navigation System - System Diagram

System Description

Note. Refer to NAVI System Owner's Manual for system operation.

The navigation system periodically calculates the vehicle's current position according to the following three signals: Travel distance of the vehicle as determined by the vehicle speed sensor, turning angle of the vehicle as determined by the gyroscope (angular velocity sensor), and the direction of vehicle travel as determined by the GPS antenna (GPS information).

The current position of the vehicle is then identified by comparing the calculated vehicle position with map data read from the map data, which is stored in the hard disk drive (HDD)(map-matching), and indicated on the screen with a current-location mark.

By comparing the vehicle position detection results found by the GPS and by map-matching, more accurate vehicle position data can be used.

The current vehicle position will be calculated by detecting the distance the vehicle moved from the previous calculation point and its direction.

Identifying Current Position Angle. Scheme 6

Scheme 6: Identifying Current Position Angle
Scheme 6: Identifying Current Position Angle
Part nameDescription
AV control unitControls each operation of the navigation system HDD is built in Voice guidance signal is output to BOSE speaker amp.
BOSE speaker amp.Voice guidance signal is input from AV control unit, and it is output to speakers.
Front tweeterVoice guidance signal from BOSE speaker amp. is output.
Steering switchesEach operation of navigation system can be performed Switch operating signal is output to AV control unit
MicrophoneSends voice signals to AV control unit
GPS antennaGPS signal is received and is output to AV control unit.

COMPONENT DESCRIPTION

Rear View Monitor System - System Diagram. Scheme 7

Scheme 7: Rear View Monitor System - System Diagram
Scheme 7: Rear View Monitor System - System Diagram

When the selector is in the R position, the display shows a view to the rear of the vehicle. Lines which indicate the vehicle clearance and distances are also displayed.

Part nameDescription
AV control unitCamera image signal is sent from rear view camera control unit
Rear view camera control unitReceives reverse signal from back-up lamp relay Receives rear view camera image signal Sends camera ON signal to rear view camera Sends image signal to AV control unit
Rear view cameraReceives camera ON signal from rear view camera control unit Sends image signal to rear view camera control unit

COMPONENT DESCRIPTION

DVD Player - System Diagram. Scheme 8

Scheme 8: DVD Player - System Diagram
Scheme 8: DVD Player - System Diagram

The DVD entertainment system consists of the following components

  1. AV control unit
  2. DVD player
  3. Video monitor
  4. A/C and AV switch assembly
  5. Steering wheel AV control switches
  6. Rear audio remote control unit
  7. BOSE speaker amp.
  8. Front tweeters
  9. Front door speakers
  10. Center speaker
  11. Rear door tweeters
  12. Rear door speakers
  13. Back door speakers
  14. Subwoofer

When the DVD entertainment system is on, video signals are sent from the DVD player to the video monitor. Audio signals are sent to the AV control unit. Audio signals can be directed through wireless infrared headphones or through the BOSE speaker amp. to the vehicle speakers. Refer to the Owner's Manual for complete DVD entertainment system operating instructions.

Identifying DVD Player Component Parts Location. Scheme 9

Scheme 9: Identifying DVD Player Component Parts Location
Scheme 9: Identifying DVD Player Component Parts Location
Part nameDescription
DVD playerOutputs DVD video to video monitor Outputs DVD audio to the AV control unit
Video monitorReceives and displays the DVD video signal
AV control unitControls audio system and DVD entertainment system functions
BOSE speaker amp.Receives audio signals from the AV control unit Outputs amplified audio signals to the speakers
A/C and AV switch assemblyAll audio and A/C operations can be operated Switch signal is output to the AV control unit and A/C auto amp
Rear audio remote control unitAudio and DVD functions can be operated Switch signal is output to the AV control unit Receives audio signal from AV control unit for headphones
Steering wheel audio control switchesAudio operation can be operated Steering switch signal (operation signal) is output to AV control unit
Front door speakersOutputs audio signal from BOSE speaker amp. Outputs high, mid and low range sounds
Front tweetersOutputs audio signal from BOSE speaker amp. Outputs high range sounds
Center speakerOutputs audio signal from BOSE speaker amp. Outputs high, mid and low range sounds
Rear door tweetersOutputs audio signal from BOSE speaker amp. Outputs high range sounds
Rear door speakersOutputs audio signal from BOSE speaker amp. Outputs high, mid and low range sounds
Back door speakersOutputs audio signal from BOSE speaker amp. Outputs high, mid and low range sounds
SubwooferOutputs audio signal from BOSE speaker amp. Outputs low range sounds

COMPONENT DESCRIPTION

Hands-Free Phone System - System Diagram. Scheme 10

Scheme 10: Hands-Free Phone System - System Diagram
Scheme 10: Hands-Free Phone System - System Diagram

Refer to the Owner's Manual for Bluetooth telephone system operating instructions.

Note. Cellular telephones must have their wireless connection set up (paired) before using the Bluetooth telephone system.

Bluetooth telephone system allows users who have a Bluetooth equipped cellular telephone to make a wireless connection between their cellular telephone and the AV control unit. Hands-free cellular telephone calls can be sent and received. Personal memos can be created using the Nissan Voice Recognition system. Some Bluetooth cellular telephones may not be recognized by the AV control unit. When a cellular telephone or the AV control unit is replaced, the telephone must be paired with the AV control unit. Different cellular telephones may have different pairing procedures. Refer to the cellular telephone operating manual and the vehicle Owner's Manual for more information.

Part nameDescription
AV control unitReceives telephone voice signal from Antenna and Microphone Sends telephone voice and voice guidance signals to the speakers
BOSE speaker amp.Receives audio signals from the AV control unit Outputs amplified audio signals to the speakers.
Front door speakerReceives telephone voice and voice guidance signals from the AV control unit through the BOSE speaker amp.
Front tweeter
Center speaker
Steering switchesStart a voice recognition session Answer and end telephone calls Adjust the volume level
MicrophoneSends voice signals to Bluetooth control unit
Bluetooth antennaSends telephone voice signal to Bluetooth control unit

COMPONENT DESCRIPTION

DESCRIPTION

  1. Diagnosis function consists of the "Self-Diagnosis" mode performed automatically and the "Confirmation/Adjustment" mode operated manually.
  2. "Self-Diagnosis" mode checks for connections between the units constituting this system, analyzes each individual unit at the same time, and displays the results on the LCD screen.
  3. "Confirmation/Adjustment" mode is used to perform trouble diagnosis that requires operation and judgment by an operator (trouble that cannot be automatically judged by the system), to check/change the set value, and to display the error history of the AV control unit.

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.

CAN Communication Signal Chart. Refer to " CAN COMMUNICATION SIGNAL CHART ".

Initial diagnosis of AV control unit.

Replace the AV control unit if this DTC is displayed. Refer to " REMOVAL AND INSTALLATION ".

Part nameDescription
AV CONTROL UNITIt is the master unit of the MULTI AV system and it is connected to each control unit by means of communication. It operates each system according to communication signals from the AV control unit. AV control unit includes audio function and vehicle information function. It is connected to ECM and combination meter via CAN communication to obtain necessary information for the vehicle information function. It inputs the automatic brightness ON/OFF signals that are required for the display dimming control. It inputs the signals for driving status recognition (vehicle speed, reverse and parking brake).

PART NAME DESCRIPTION

Refer to " SYSTEM DESCRIPTION ".

Refer to " SYSTEM DESCRIPTION ".

Refer to " SYSTEM DESCRIPTION ".

Refer to " SYSTEM DESCRIPTION ".

Refer to " SYSTEM DESCRIPTION ".

Replace the AV control unit if this DTC is displayed. Refer to " REMOVAL AND INSTALLATION ".

Part nameDescription
AV CONTROL UNITIt is the master unit of the MULTI AV system and it is connected to each control unit by means of communication. It operates each system according to communication signals from the AV control unit. AV control unit includes audio function and vehicle information function. It is connected to ECM and combination meter via CAN communication to obtain necessary information for the vehicle information function. It inputs the automatic brightness ON/OFF signals that are required for the display dimming control. It inputs the signals for driving status recognition (vehicle speed, reverse and parking brake).

PART NAME DESCRIPTION

Refer to " SYSTEM DESCRIPTION ".

Replace the AV control unit if this DTC is displayed. Refer to " REMOVAL AND INSTALLATION ".

Part nameDescription
AV CONTROL UNITIntegrates HDD (hard disk drive) allowing map data and music data to be stored. It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to communication signals from the AV control unit. The AV control unit includes the audio, hands-free phone, voice control, navigation, and vehicle information functions. It is connected to ECM and combination meter via CAN communication to obtain necessary information for the vehicle information function. It inputs the automatic brightness ON/OFF signals that are required for the display dimming control. It inputs the signals for driving status recognition (vehicle speed, reverse and parking brake).

PART NAME DESCRIPTION

Replace the AV control unit if this DTC is displayed. Refer to " REMOVAL AND INSTALLATION ".

Part nameDescription
AV CONTROL UNITIntegrates HDD (hard disk drive) allowing map data and music data to be stored. It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to communication signals from the AV control unit. The AV control unit includes the audio, hands-free phone, voice control, navigation, and vehicle information functions. It is connected to ECM and combination meter via CAN communication to obtain necessary information for the vehicle information function. It inputs the automatic brightness ON/OFF signals that are required for the display dimming control. It inputs the signals for driving status recognition (vehicle speed, reverse and parking brake).

PART NAME DESCRIPTION

Replace the AV control unit if this DTC is displayed. Refer to " REMOVAL AND INSTALLATION ".

Part nameDescription
AV CONTROL UNITIntegrates HDD (hard disk drive) allowing map data and music data to be stored. It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to communication signals from the AV control unit. The AV control unit includes the audio, hands-free phone, voice control, navigation, and vehicle information functions. It is connected to ECM and combination meter via CAN communication to obtain necessary information for the vehicle information function. It inputs the automatic brightness ON/OFF signals that are required for the display dimming control. It inputs the signals for driving status recognition (vehicle speed, reverse and parking brake).

PART NAME DESCRIPTION

Replace the AV control unit if this DTC is displayed. Refer to " REMOVAL AND INSTALLATION ".

Part nameDescription
AV CONTROL UNITIntegrates HDD (hard disk drive) allowing map data and music data to be stored. It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to communication signals from the AV control unit. The AV control unit includes the audio, hands-free phone, voice control, navigation, and vehicle information functions. It is connected to ECM and combination meter via CAN communication to obtain necessary information for the vehicle information function. It inputs the automatic brightness ON/OFF signals that are required for the display dimming control. It inputs the signals for driving status recognition (vehicle speed, reverse and parking brake).

PART NAME DESCRIPTION

Replace the AV control unit if this DTC is displayed. Refer to " REMOVAL AND INSTALLATION ".

Part nameDescription
AV CONTROL UNITIntegrates HDD (hard disk drive) allowing map data and music data to be stored. It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to communication signals from the AV control unit. The AV control unit includes the audio, hands-free phone, voice control, navigation, and vehicle information functions. It is connected to ECM and combination meter via CAN communication to obtain necessary information for the vehicle information function. It inputs the automatic brightness ON/OFF signals that are required for the display dimming control. It inputs the signals for driving status recognition (vehicle speed, reverse and parking brake).

PART NAME DESCRIPTION

Replace the AV control unit if this DTC is displayed. Refer to " REMOVAL AND INSTALLATION ".

Part nameDescription
AV CONTROL UNITIntegrates HDD (hard disk drive) allowing map data and music data to be stored. It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to communication signals from the AV control unit. The AV control unit includes the audio, hands-free phone, voice control, navigation, and vehicle information functions. It is connected to ECM and combination meter via CAN communication to obtain necessary information for the vehicle information function. It inputs the automatic brightness ON/OFF signals that are required for the display dimming control. It inputs the signals for driving status recognition (vehicle speed, reverse and parking brake).

PART NAME DESCRIPTION

Replace the AV control unit if this DTC is displayed. Refer to " REMOVAL AND INSTALLATION ".

Part nameDescription
AV CONTROL UNITIntegrates HDD (hard disk drive) allowing map data and music data to be stored. It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to communication signals from the AV control unit. The AV control unit includes the audio, hands-free phone, voice control, navigation, and vehicle information functions. It is connected to ECM and combination meter via CAN communication to obtain necessary information for the vehicle information function. It inputs the automatic brightness ON/OFF signals that are required for the display dimming control. It inputs the signals for driving status recognition (vehicle speed, reverse and parking brake).

PART NAME DESCRIPTION

Part nameDescription
AV CONTROL UNITIntegrates HDD (hard disk drive) allowing map data and music data to be stored. It is the master unit of the MULTI AV system, and it is connected to each control unit by means of communication. It operates each system according to communication signals from the AV control unit. The AV control unit includes the audio, hands-free phone, voice control, navigation, and vehicle information functions. It is connected to ECM and combination meter via CAN communication to obtain necessary information for the vehicle information function. It inputs the automatic brightness ON/OFF signals that are required for the display dimming control. It inputs the signals for driving status recognition (vehicle speed, reverse and parking brake).

PART NAME DESCRIPTION

Refer to " SYSTEM DESCRIPTION ".

Part nameDescription
DISPLAY UNITDisplay image is controlled by the serial communication from AV control unit. RGB image signal is input from AV control unit (RGB, RGB area and RGB synchronizing). Auxiliary image signal is input from the auxiliary input jack. Camera image signal is input from the camera control unit. Synchronize signal (HP, VP) is output to AV control unit. Touch panel function can be operated for each system by touching a display directly.

PART NAME DESCRIPTION

Refer to " SYSTEM DESCRIPTION ".

Part nameDescription
CAMERA CONTROL UNITCamera image signal is input from rear view camera, and camera image is indicated on the display. Power (camera ON signal) is sent to rear view camera. Controlled by audio communication sent from AV control unit. AV control unit recognizes the presence of camera system with camera connection recognition signal.

PART NAME DESCRIPTION

Part nameDescription
SATELLITE RADIO ANTENNASatellite radio signal is received and sent to audio control unit.

PART NAME DESCRIPTION

U1300 is indicated when malfunction occurs in communication signal of multi AV system. Indicated simultaneously, without fail, with the malfunction of control units connected to AV control unit with communication line. Determine the possible malfunction cause from the table below.

Replace the AV control unit if this DTC is displayed. Refer to " REMOVAL AND INSTALLATION ".

Part nameDescription
AV CONTROL UNITIt is the master unit of the MULTI AV system and it is connected to each control unit by means of communication. It operates each system according to communication signals from the AV control unit. AV control unit includes audio function and vehicle information function. It is connected to ECM and combination meter via CAN communication to obtain necessary information for the vehicle information function. It inputs the automatic brightness ON/OFF signals that are required for the display dimming control. It inputs the signals for driving status recognition (vehicle speed, reverse and parking brake).

PART NAME DESCRIPTION

Transmit the image displayed with audio control unit with RGB signal to the display unit.

Scheme 11

Scheme 11: Diagnosis Procedure
Scheme 11: Diagnosis Procedure

Scheme 12

Scheme 12
Scheme 12

Scheme 13

Scheme 13
Scheme 13
  1. CHECK CONTINUITY RGB (R: RED) SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect display unit connector M93 and AV control unit connector M43. Check continuity between display unit harness connector M93 (A) terminal 17 and AV control unit harness connector M43 (B) terminal 21. CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M93 17 M43 21 Yes Check continuity between display unit harness connector M93 (A) terminal 17 and ground. see scheme 71: Checking Continuity Between Display Unit Harness Connector Terminal 17 And Ground CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M93 17 Ground No Are the continuity results as specified? YES: GO TO 2 NO: Repair harness or connector.
  2. CHECK RGB (R: RED) SIGNAL Connect display unit connector M93 and AV control unit connector M43. Turn ignition switch ON. Check signal between display unit harness connector M93 terminal 17 and ground. SIGNAL CHART (+) (-) Condition Reference signal Connector Terminal M93 17 Ground Receive audio signal see scheme 72: Checking Signal Between Display Unit Harness Connector Terminal 17 And Ground Are the voltage readings as specified? YES: Replace display unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S41965947372009021300000) ". NO: Replace AV control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S09516735422009021300000) ".

Transmit the image displayed with AV control unit with RGB signal to the display unit.

Scheme 14

Scheme 14: Diagnosis Procedure
Scheme 14: Diagnosis Procedure

Scheme 15

Scheme 15
Scheme 15
  1. CHECK CONTINUITY RGB (G: GREEN) SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect display unit connector M93 and AV control unit connector M43. Check continuity between display unit harness connector M93 (A) terminal 6 and AV control unit harness connector M43 (B) terminal 22. CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M93 6 M43 22 Yes Check continuity between display unit harness connector M93 (A) terminal 6 and ground. see scheme 73: Checking Continuity Between Display Unit Connector Terminal 6 And Ground CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M93 6 Ground No Are the continuity results as specified? YES: GO TO 2 NO: Repair harness or connector.
  2. CHECK RGB (G: GREEN) SIGNAL Connect display unit connector M93 and AV control unit connector M43. Turn ignition switch ON. Check signal between display unit harness connector M93 terminal 6 and ground. CONNECTOR TERMINAL SIGNAL CHART (+) (-) Condition Reference signal Connector Terminal M93 6 Ground Receive audio signal see scheme 74: Checking Signal Between Display Unit Connector Terminal 6 And Ground Are voltage readings as specified? YES: Replace display unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S41965947372009021300000) ". NO: Replace AV control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S09516735422009021300000) ".

Transmit the image displayed with AV control unit with RGB signal to the display unit.

Scheme 16

Scheme 16: Diagnosis Procedure
Scheme 16: Diagnosis Procedure

Scheme 17

Scheme 17
Scheme 17

Scheme 18

Scheme 18
Scheme 18
  1. CHECK CONTINUITY RGB (B: BLUE) SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect display unit connector M93 and AV control unit connector M43. Check continuity between display unit harness connector M93 (A) terminal 18 and AV control unit harness connector M43 (B) terminal 23. CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M93 18 M43 23 Yes Check continuity between display unit harness connector M93 (A) terminal 18 and ground. see scheme 75: Checking Continuity Between Display Unit Connector Terminal 18 And Ground CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M93 18 Ground No Are continuity results as specified? YES: GO TO 2 NO: Repair harness or connector.
  2. CHECK RGB (B: BLUE) SIGNAL Connect display unit connector M93 and AV control unit connector M43. Turn ignition switch ON. Check signal between display unit harness connector M93 terminal 18 and ground. CONNECTOR TERMINAL SIGNAL CHART (+) (-) Condition Reference signal Connector Terminal M93 18 Ground Receive audio signal see scheme 76: Checking Signal Between Display Unit Harness Connector Terminal 18 And Ground Are voltage readings as specified? YES: Replace display unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S41965947372009021300000) ". NO: Replace AV control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S09516735422009021300000) ".

Transmit the RGB synchronizing signal to the display unit so as to synchronize the RGB image displayed with AV control unit.

Scheme 19

Scheme 19: Diagnosis Procedure
Scheme 19: Diagnosis Procedure

Scheme 20

Scheme 20
Scheme 20
  1. CHECK CONTINUITY RGB SYNCHRONIZING SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect display unit connector M93 and AV control unit connector M43. Check continuity between display unit harness connector M93 (A) terminal 19 and AV control unit harness connector M43 (B) terminal 25. CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M93 19 M43 25 Yes Check continuity between display unit harness connector M93 (A) terminal 19 and ground. CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M93 19 Ground No see scheme 77: Checking Continuity Between Display Unit Harness Connector Terminal 19 And Ground Are continuity results as specified? YES: GO TO 2 NO: Repair harness or connector.
  2. CHECK RGB SYNCHRONIZING SIGNAL Connect display unit connector M93 and AV control unit connector M43. Turn ignition switch ON. Check signal between display unit harness connector M93 terminal 19 and ground. CONNECTOR TERMINAL SIGNAL CHART (+) (-) Condition Reference signal Connector Terminal M93 19 Ground Receive audio signal see scheme 78: Checking Signal Between Display Unit Harness Connector M93 Terminal 19 And Ground Are voltage readings as specified? YES: Replace display unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S41965947372009021300000) ". NO: Replace AV control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S09516735422009021300000) ".

Transmits the display area of RGB image displayed by AV control unit with RGB area (YS) signal to display unit.

Scheme 21

Scheme 21: Diagnosis Procedure
Scheme 21: Diagnosis Procedure

Scheme 22

Scheme 22
Scheme 22
  1. CHECK CONTINUITY RGB AREA (YS) SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect display unit connector M93 and AV control unit connector M43. Check continuity between display unit harness connector M93 (A) terminal 9 and AV control unit harness connector M43 (B) terminal 27. CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M93 9 M43 27 Yes Check continuity between display unit harness connector M93 (A) terminal 9 and ground. see scheme 79: Checking Continuity Between Display Unit Harness Connector M93 Terminal 9 And Ground CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M93 9 Ground No Are continuity results as specified? YES: GO TO 2 NO: Repair harness or connector.
  2. CHECK RGB SYNCHRONIZING SIGNAL Connect display unit connector M93 and AV control unit connector M43. Turn ignition switch ON. Check signal between display unit harness connector M93 terminal 9 and ground. CONNECTOR TERMINAL SIGNAL CHART (+) (-) Condition Reference signal Connector Terminal M93 9 Ground Receive audio signal (Scheme 11): Checking Signal Between Display Unit Harness Connector M93 Terminal 9 And Ground Are voltage readings as specified? YES: Replace display unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S41965947372009021300000) ". NO: Replace AV control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S09516735422009021300000) ".

In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizontal synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images displayed with AV control unit such as the image quality adjusting menu, etc.

Scheme 23

Scheme 23: Diagnosis Procedure
Scheme 23: Diagnosis Procedure

Scheme 24

Scheme 24
Scheme 24
  1. CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect display unit connector M93 and AV control unit connector M43. Check continuity between display unit harness connector M93 (A) terminal 8 and AV control unit harness connector M43 (B) terminal 28. CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M93 8 M43 28 Yes Check continuity between display unit harness connector M93 (A) terminal 8 and ground. CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M93 8 Ground No (Scheme 12): Checking Continuity Between Display Unit Harness Connector M93 Terminal 8 And Ground Are continuity results as specified? YES: GO TO 2 NO: Repair harness or connector.
  2. CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL Connect display unit connector M93 and AV control unit connector M43. Turn ignition switch ON. Check signal between display unit harness connector M93 terminal 8 and ground. CONNECTOR TERMINAL SIGNAL CHART (+) (-) Condition Reference signal Connector Terminal M93 8 Ground Receive audio signal (Scheme 13): Checking Signal Between Display Unit Harness Connector M93 Terminal 8 And Ground Are voltage readings as specified? YES: Replace AV control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S09516735422009021300000) ". NO: Replace display unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S41965947372009021300000) ".

In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizontal synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images displayed with AV control unit such as the image quality adjusting menu, etc.

Scheme 25

Scheme 25: Diagnosis Procedure
Scheme 25: Diagnosis Procedure

Scheme 26

Scheme 26
Scheme 26
  1. CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect display unit connector M93 and AV control unit connector M43. Check continuity between display unit harness connector M93 (A) terminal 20 and AV control unit harness connector M43 (B) terminal 29. CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M93 20 M43 29 Yes Check continuity between display unit harness connector M93 (A) terminal 20 and ground. CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M93 20 Ground No (Scheme 14): Checking Continuity Between Display Unit Harness Connector M93 Terminal 20 And Ground Are continuity results as specified? YES: GO TO 2 NO: Repair harness or connector.
  2. CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL Connect display unit connector M93 and AV control unit connector M43. Turn ignition switch ON. Check signal between display unit harness connector M93 terminal 20 and ground. CONNECTOR TERMINAL SIGNAL CHART (+) (-) Condition Reference signal Connector Terminal M93 20 Ground Receive audio signal Are voltage readings as specified? YES: Replace AV control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S09516735422009021300000) ". NO: Replace display unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S41965947372009021300000) ". (Scheme 15): Checking Signal Between Display Unit Harness Connector Terminal 20 And Ground

The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the front door speakers using the audio signal circuits.

Scheme 27

Scheme 27: Diagnosis Procedure
Scheme 27: Diagnosis Procedure

Scheme 28

Scheme 28
Scheme 28

Scheme 29

Scheme 29
Scheme 29

Scheme 30

Scheme 30
Scheme 30
  1. HARNESS CHECK Disconnect BOSE speaker amp. connector M112 and suspect speaker connector. Check continuity between BOSE speaker amp. harness connector M112 (A) and suspect speaker harness connector (B). CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M112 4 D12 1 Yes 5 2 8 D112 1 13 2 Check continuity between BOSE speaker amp. harness connector M112 (A) and ground. CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M112 4 Ground No 5 8 13 (Scheme 16): Checking Continuity Between Bose Speaker Amp Harness Connector M112 And Ground Are continuity test results as specified? YES: GO TO 2 NO: Check connector housings for disconnected or loose terminals. Repair harness or connector.
  2. FRONT SPEAKER SIGNAL CHECK Connect BOSE speaker amp. connector M112 and suspect speaker connector. Turn ignition switch to ACC. Push "POWER" switch. Check the signal between BOSE speaker amp. harness connector M112 terminals with CONSULT-III or oscilloscope. CONNECTOR TERMINAL SIGNAL CHART Connector Terminal Condition Reference signal (+) (-) M112 4 5 Receive audio signal 8 13 (Scheme 17): Checking Signal Between Bose Speaker Amp Harness Connector M112 Terminals Is audio signal voltage as specified? YES: Replace suspect speaker. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S15391590302009021300000) ". NO: GO TO 3
  3. HARNESS CHECK Disconnect AV control unit connector M42 and BOSE speaker amp. connector M113. Check continuity between AV control unit harness connector M42 (A) and BOSE speaker amp. harness connector M113 (B). CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M42 2 M113 18 Yes 3 32 11 19 12 20 Check continuity between AV control unit harness connector M42 (A) and ground. CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M42 2 Ground No 3 11 12 (Scheme 18): Checking Continuity Between AV Control Unit Harness Connector And Ground Are continuity test results as specified? YES: GO TO 4 NO: Check connector housings for disconnected or loose terminals. Repair harness or connector.
  4. FRONT SPEAKER SIGNAL CHECK Connect AV control unit connector and BOSE speaker amp. connector. Turn ignition switch ACC. Push "POWER" switch. Check the signal between AV control unit harness connector M42 terminals with CONSULT-III or oscilloscope. CONNECTOR TERMINAL SIGNAL CHART Connector Terminals Condition Reference signal (+) (-) M42 2 3 Receive audio signal 11 12 (Scheme 19): Checking Signal Between AV Control Unit Harness Connector M42 Terminals Are the audio signal voltage readings as specified? YES: Replace BOSE speaker amp. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S36367574992009021300000) ". NO: Replace AV control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S09516735422009021300000) ".

The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the tweeters using the audio signal circuits.

The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the center speaker using the audio signal circuits.

Scheme 31

Scheme 31: Diagnosis Procedure
Scheme 31: Diagnosis Procedure

Scheme 32

Scheme 32
Scheme 32
  1. HARNESS CHECK Disconnect BOSE speaker amp. connector M113 and center speaker connector M110. Check continuity between BOSE speaker amp. harness connector M113 (A) and center speaker harness connector M110 (B). CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M113 15 M110 1 Yes 28 2 Check continuity between BOSE speaker amp. harness connector M113 (A) and ground. CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M113 15 Ground No 28 (Scheme 24): Checking Continuity Between Bose Speaker amp Harness Connector M113 And Ground Are continuity test results as specified? YES: GO TO 2 NO: Check connector housings for disconnected or loose terminals. Repair harness or connector.
  2. CENTER SPEAKER SIGNAL CHECK Connect BOSE speaker amp. connector M113 and center speaker connector M110. Turn ignition switch to ACC. Push "POWER" switch. Check the signal between BOSE speaker amp. harness connector M113 terminals with CONSULT-III or oscilloscope. CONNECTOR TERMINAL SIGNAL CHART Connector Terminals Condition Reference signal (+) (-) M113 15 28 Receive audio signal (Scheme 25): Checking Signal Between BOSE Speaker Amp Harness Connector Terminals 15 And 28 Is the audio signal voltage reading as specified? YES: Replace center speaker. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S31789904062009021300000) ". NO: GO TO 3
  3. HARNESS CHECK Disconnect AV control unit connector M42 and BOSE speaker amp. connector M113. Check continuity between AV control unit harness connector M42 (A) and BOSE speaker amp. harness connector M113 (B). CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M42 2 M113 18 Yes 3 32 11 19 12 20 Check continuity between AV control unit harness connector M42 (A) and ground. CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M42 2 Ground No 3 11 12 (Scheme 26): Checking Continuity Between AV Control Unit Harness Connector M42 And Ground Are continuity test results as specified? YES: GO TO 4 NO: Check connector housings for disconnected or loose terminals. Repair harness or connector.
  4. FRONT SPEAKER SIGNAL CHECK Connect AV control unit connector and BOSE speaker amp. connector. Turn ignition switch ACC. Push "POWER" switch. Check the signal between AV control unit harness connector M42 terminals with CONSULT-III or oscilloscope. CONNECTOR TERMINAL SIGNAL CHART Connector Terminals Condition Reference signal (+) (-) M42 2 3 Receive audio signal 11 12 (Scheme 27): Checking Signal Between AV Control Unit Harness Connector M42 Terminals Are the audio signal voltage readings as specified? YES: Replace BOSE speaker amp. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S36367574992009021300000) ". NO: Replace AV control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S09516735422009021300000) ".

The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the rear door speakers using the audio signal circuits.

Scheme 33

Scheme 33: Diagnosis Procedure
Scheme 33: Diagnosis Procedure

Scheme 34

Scheme 34
Scheme 34

Scheme 35

Scheme 35
Scheme 35

Scheme 36

Scheme 36
Scheme 36
  1. HARNESS CHECK Disconnect BOSE speaker amp. connectors M112 and suspect speaker connector. Check continuity between BOSE speaker amp. harness connectors M112 (A) and suspect speaker harness connector (B). CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M112 1 D207 1 Yes 10 2 2 D307 1 3 2 Check continuity between BOSE speaker amp. harness connectors M112 (A) and ground. CONNECTOR TERMINAL CONTINUITY CHART Connector Terminal - Continuity M112 1 Ground No 10 2 3 (Scheme 28): Checking Continuity Between Bose Speaker Amp Harness Connectors M112 And Ground Are the continuity test results as specified? YES: GO TO 2 NO: Check connector housings for disconnected or loose terminals. Repair harness or connector.
  2. REAR DOOR SPEAKER SIGNAL CHECK Connect BOSE speaker amp. connectors and suspect speaker connector. Turn ignition switch to ACC. Push "POWER" switch. Check the signal between BOSE speaker amp. harness connectors M112 terminals with CONSULT-III or oscilloscope. CONNECTOR TERMINAL SIGNAL CHART Connector Terminals Condition Reference signal (+) (-) M112 1 10 Receive audio signal 2 3 (Scheme 29): Checking Signal Between Bose Speaker Amp Harness Connectors M112 Terminals Are audio signal voltage readings as specified? YES: Replace suspect speaker. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S16576074262009021300000) ". NO: GO TO 3
  3. HARNESS CHECK Disconnect AV control unit connector M42 and BOSE speaker amp. connector M113. Check continuity between AV control unit harness connector M42 (A) and BOSE speaker amp. harness connector M113 (B). CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M42 4 M113 21 Yes 5 22 13 23 14 33 Check continuity between AV control unit harness connector M42 (A) and ground. CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M42 4 Ground No 5 13 14 Are the continuity test results as specified? YES: GO TO 4 NO: Check connector housings for disconnected or loose terminals. Repair harness or connector. (Scheme 30): Checking Continuity Between AV Control Unit Harness Connector M42 And Ground
  4. REAR DOOR SPEAKER SIGNAL CHECK Connect AV control unit connector M42 and BOSE speaker amp. connector M113. Turn ignition switch to ACC. Push "POWER" switch. Check the signal between AV control unit harness connector M42 terminals with CONSULT-III or oscilloscope. CONNECTOR TERMINAL SIGNAL CHART Connector Terminals Condition Reference signal (+) (-) M42 4 5 Receive audio signal 13 14 Is the audio signal voltage reading as specified? YES: Replace BOSE speaker amp. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S36367574992009021300000) ". NO: Replace AV control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S09516735422009021300000) ". see scheme 100: Checking Signal Between AV Control Unit Harness Connector M42 Terminals

The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the rear tweeters using the audio signal circuits.

The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the back door speakers using the audio signal circuits.

Scheme 37

Scheme 37: Diagnosis Procedure
Scheme 37: Diagnosis Procedure

Scheme 38

Scheme 38
Scheme 38
  1. HARNESS CHECK Disconnect BOSE speaker amp. connectors and suspect speaker connector. Check continuity between BOSE speaker amp. harness connectors M112 and M113 (A) and suspect speaker harness connector (B). CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M112 6 D518 1 Yes 7 2 M113 37 D716 1 27 2 Check continuity between BOSE speaker amp. harness connectors M112 and M113 (A) and ground. CONNECTOR TERMINAL CONTINUITY CHART Connector Terminal - Continuity M112 6 Ground No 7 M113 27 37 (Scheme 32): Checking Continuity Between Bose Speaker Amp Harness Connectors M112 And M113 And Ground Are the continuity test results as specified? YES: GO TO 2 NO: Check connector housings for disconnected or loose terminals. Repair harness or connector.
  2. BACK DOOR SPEAKER SIGNAL CHECK Connect BOSE speaker amp. connectors and suspect speaker connector. Turn ignition switch to ACC. Push "POWER" switch. Check the signal between BOSE speaker amp. harness connectors M113 terminals with CONSULT-III or oscilloscope. CONNECTOR TERMINAL SIGNAL CHART Connector Terminals Condition Reference signal (+) (-) M112 6 7 Receive audio signal M113 37 27 see scheme 106: Checking Signal Between Bose Speaker Amp Harness Connectors M113 Terminals Are audio signal voltage readings as specified? YES: Replace suspect speaker. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S31799694252009021300000) ". NO: GO TO 3
  3. HARNESS CHECK Disconnect AV control unit connector M42 and BOSE speaker amp. connector M113. Check continuity between AV control unit harness connector M42 (A) and BOSE speaker amp. harness connector M113 (B). CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M42 4 M113 21 Yes 5 22 13 23 14 33 Check continuity between AV control unit harness connector M42 (A) and ground. CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M42 4 Ground No 5 13 14 see scheme 107: Checking Continuity Between AV Control Unit Harness Connector M42 And Ground Are the continuity test results as specified? YES: GO TO 4 NO: Check connector housings for disconnected or loose terminals. Repair harness or connector.
  4. REAR DOOR SPEAKER SIGNAL CHECK Connect AV control unit connector M42 and BOSE speaker amp. connector M113. Turn ignition switch to ACC. Push "POWER" switch. Check the signal between AV control unit harness connector M42 terminals with CONSULT-III or oscilloscope. CONNECTOR TERMINAL SIGNAL CHART Connector Terminals Condition Reference signal (+) (-) M42 4 5 Receive audio signal 13 14 (Scheme 33): Checking Signal Between AV Control Unit Harness Connector M42 Terminals Is the audio signal voltage reading as specified? YES: Replace BOSE speaker amp. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S36367574992009021300000) ". NO: Replace AV control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S09516735422009021300000) ".

The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the subwoofer using the audio signal circuits.

Scheme 39

Scheme 39: Diagnosis Procedure
Scheme 39: Diagnosis Procedure

Scheme 40

Scheme 40
Scheme 40

Scheme 41

Scheme 41
Scheme 41
  1. VERIFY SUBWOOFER POWER AND GROUND SUPPLY Check power and ground supply to the subwoofer. Refer to " «WOOFER: DIAGNOSIS PROCEDURE»(ref-308592-S16995472032009021300000) " Did the power and ground supply check OK? YES: GO TO 2 NO: Check connector housings for disconnected or loose terminals. Repair harness or connector.
  2. HARNESS CHECK Disconnect BOSE speaker amp. connector M112 and subwoofer connector. Check continuity between BOSE speaker amp. harness connector M112 (A) and M113 (B) and subwoofer harness connector B72 (C). CONNECTOR TERMINAL CONTINUITY CHART Connector Terminal Connector Terminal Continuity A: M112 9 C: B72 2 Yes 14 1 B: M113 25 4 Check continuity between BOSE speaker amp. harness connector M112 (A) and M113 (B) and ground. CONNECTOR TERMINAL CONTINUITY CHART Connector Terminal - Continuity A: M112 9 Ground No 14 B: M113 25 Are the continuity test results as specified? YES: GO TO 3 NO: Check connector housings for disconnected or loose terminals. Repair harness or connector. (Scheme 34): Checking Continuity Between BOSE Speaker Amp Harness Connector M112 And M113 And Ground
  3. SUBWOOFER AMP ON SIGNAL CHECK Connect BOSE speaker amp. connector M112. Turn ignition switch to ACC. Push "POWER" switch. Check voltage between subwoofer connector B72 terminal 4 and ground. CONNECTOR TERMINAL VOLTAGE CHART (+) (-) ACC Connector Terminal B72 4 Ground Battery voltage Are the voltage test results as specified? YES: GO TO 4 NO: Replace BOSE speaker amp. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S36367574992009021300000) ". (Scheme 35): Checking Voltage Between Subwoofer Connector Terminal 4 And Ground
  4. SUBWOOFER AUDIO SIGNAL CHECK Connect BOSE speaker amp. connector M112 and subwoofer connector B72. Turn ignition switch to ACC. Push "POWER" switch. Check the signal between BOSE speaker amp. harness connector M112 terminals with CONSULT-III or oscilloscope. CONNECTOR TERMINAL SIGNAL CHART Connector Terminals Condition Reference signal (+) (-) M112 9 14 Receive audio signal Is the audio signal voltage as specified? YES: Replace subwoofer. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S04426223632009021300000) ". NO: GO TO 5 (Scheme 36): Checking Signal Between BOSE Speaker Amp Harness Connector Terminals 14 And 9
  5. HARNESS CHECK Disconnect AV control unit connector M42 and BOSE speaker amp. connector M113. Check continuity between AV control unit harness connector M42 (A) and BOSE speaker amp. harness connector M113 (B). CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M42 4 M113 21 Yes 5 22 13 23 14 33 Check continuity between AV control unit harness connector M42 (A) and ground. CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M42 4 Ground No 5 13 14 Are the continuity test results as specified? YES: GO TO 6 NO: Check connector housings for disconnected or loose terminals. Repair harness or connector. see scheme 112: Checking Continuity Between AV Control Unit Harness Connector M42 And Ground
  6. REAR DOOR SPEAKER SIGNAL CHECK Connect AV control unit connector M42 and BOSE speaker amp. connector M113. Turn ignition switch to ACC. Push "POWER" switch. Check the signal between AV control unit harness connector M42 terminals with CONSULT-III or oscilloscope. CONNECTOR TERMINAL SIGNAL CHART Connector Terminals Condition Reference signal (+) (-) M42 4 5 Receive audio signal 13 14 see scheme 113: Checking Signal Between AV Control Unit Harness Connector Terminals Is the audio signal voltage reading as specified? YES: Replace BOSE speaker amp. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S36367574992009021300000) ". NO: Replace AV control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S09516735422009021300000) ".

When the audio system is turned on, a voltage signal is supplied from the AV control unit to the BOSE speaker amp. When this signal is received, the BOSE speaker amp. will turn on.

Scheme 42

Scheme 42: Diagnosis Procedure
Scheme 42: Diagnosis Procedure

Scheme 43

Scheme 43
Scheme 43
  1. CHECK AMP ON SIGNAL (BOSE SPEAKER AMP) Turn audio system ON. Check voltage between BOSE speaker amp. harness connector M113 terminal 31 and ground. 31 - Ground: Battery voltage Is battery voltage present? YES: Inspection End. NO: GO TO 2 see scheme 114: Checking Voltage Between BOSE Speaker amp Harness Connector M113 Terminal 31 And Ground
  2. CHECK AMP ON SIGNAL (AV CONTROL UNIT) Check voltage between AV control unit harness connector M42 terminal 1 and ground. 1 - Ground: Battery voltage Is battery voltage present? YES: Repair harness or connector. NO: Replace AV control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S09516735422009021300000) ". see scheme 115: Checking Voltage Between AV Control Unit Harness Connector M42 Terminal 1 And Ground

When one of the steering wheel audio control switches is pushed, the resistance in the steering wheel audio control switch circuit changes depending on which button is pushed.

Scheme 44

Scheme 44: Diagnosis Procedure
Scheme 44: Diagnosis Procedure

Scheme 45

Scheme 45
Scheme 45

Scheme 46

Scheme 46
Scheme 46
  1. CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE Turn ignition switch OFF. Disconnect steering wheel audio control switch connector M102. Check resistance between steering switch connector terminals. CONNECTOR TERMINAL RESISTANCE CHART Terminal Signal name Condition Resistance (ohms) (Approx.) 16 17 Seek (down) Depress switch. 165 Volume (down) Depress VOL down switch. 487 Phone/Send Depress switch. 0 20 17 Seek (up) Depress switch. 165 Volume (up) Depress VOL up switch. 487 Mode/End Depress switch. 0 (Scheme 37): Checking Resistance Between Steering Switch Connector Terminals Do the steering wheel audio control switches check OK? YES: GO TO 2 NO: Replace steering wheel audio control switch. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S23880936252009021300000) ".
  2. CHECK HARNESS Turn ignition switch OFF. Disconnect AV control unit connector M42 and spiral cable connector M30. Check continuity between AV control unit harness connector M42 (A) and spiral cable harness connector M30 (B). CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M42 6 M30 24 Yes 15 31 16 32 Check continuity between AV control unit connector M42 (A) and ground. CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M42 6 Ground No 15 16 (Scheme 38): Checking Continuity Between AV Control Unit Connector M42 And Ground Are the continuity results as specified? YES: GO TO 3 NO: Repair harness.
  3. SPIRAL CABLE CHECK Disconnect spiral cable connector M102. Check continuity between spiral cable harness connector M30 (A) and M102 (B). CONNECTOR TERMINAL CONTINUITY CHART Spiral cable Continuity Connector Terminal Connector Terminal M30 24 M102 20 Yes 31 17 32 16 see scheme 118: Checking Continuity Between Spiral Cable Harness Connector M30 And M102 Does the spiral cable check OK? YES: Inspection End. NO: Replace spiral cable. Refer to " «REMOVAL AND INSTALLATION»(ref-308550-S08874885882009021300000) ".

Voice signals are transmitted from the microphone to the AV control unit using the microphone signal circuits.

Scheme 47

Scheme 47: Diagnosis Procedure
Scheme 47: Diagnosis Procedure

Scheme 48

Scheme 48
Scheme 48
  1. CHECK HARNESS BETWEEN AV CONTROL UNIT AND MICROPHONE Turn ignition switch OFF. Disconnect AV control unit connector and microphone connector. Check continuity between AV control unit harness connector M45 (A) and microphone harness connector R109 (B). CONNECTOR TERMINAL CONTINUITY CHART A B Continuity Connector Terminal Connector Terminal M45 72 R109 1 Yes 71 2 70 4 Check continuity between AV control unit harness connector M45 (A) and ground. CONNECTOR TERMINAL CONTINUITY CHART A - Continuity Connector Terminal M45 70 Ground No 71 72 see scheme 119: Checking Continuity Between AV Control Unit Harness Connector M45 And Ground Are the continuity test results as specified? YES: GO TO 2 NO: Repair harness or connector.
  2. CHECK MICROPHONE POWER SUPPLY Connect AV control unit connector and microphone connector. Turn ignition switch ON. Check voltage between microphone harness connector R109 terminal 4 and ground. 4 - Ground: Approx. 5V Is voltage reading approx. 5 volts? YES: GO TO 3 NO: Replace AV control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S09516735422009021300000) ". (Scheme 39): Checking Voltage Between Microphone Harness Connector R109 Terminal 4 And Ground
  3. CHECK MICROPHONE SIGNAL Check signal between AV control unit harness connector M45 terminals 71 and 72. CONNECTOR TERMINAL SIGNAL CHART Connector (+) (-) Reference signal Terminal Terminal M45 71 72 While speaking into MIC (Scheme 40): Checking Signal Between AV Control Unit Harness Connector M45 Terminals 71 And 72 Are voltage readings as specified? YES: Replace AV control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S09516735422009021300000) ". NO: Replace microphone. Refer to " «REMOVAL AND INSTALLATION»(ref-308592-S05434459002009021300000) ".

Basic Operation

SymptomCauseRemedy
No image is shown.Display brightness adjustment is set fully to DARK side.Adjust the display brightness.
No guide sound is heard. Audio guide volume is too low or too high.Volume control is set to OFF, MIN or MAX.Adjust the audio guide volume.
Audio guidance is not available while the vehicle is driving on a dark pink route.System is not malfunctioning.
Screen is too dark. Motion of the image is too slow.Temperature inside the vehicle is low.Wait until the temperature inside the vehicle reaches the proper temperature.
Small black or bright spots appear on the screen.Symptom peculiar to a liquid crystal display (display unit).System is not malfunction.

SYMPTOM CHART

More articles — Audio, Visual, Navigation System