Audio, Visual, Navigation System (Without Navigation): Overview Infiniti FX50 II

Scheme 1

1. Reference 1... Refer to «CONSULT-III FUNCTION (MULTI AV)»(ref-368887-S03104820282010081300000) .
2. Reference 2... Refer to «DTC INDEX»(ref-368887-S15446208492010081300000) .
3. Reference 3... Refer to «SYMPTOM TABLE»(ref-368887-S30672609332010081300000) .

ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL: Description

Always correct the center position of the predicted course line after disconnecting the battery negative terminal.

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: Description

When camera control unit is replaced, the center position of predicted course line shall be corrected.

PREDICTED COURSE LINE CENTER POSITION ADJUSTMENT: Description

Adjust the center position of the predicted course line of the rear view monitor if it is shifted.

System Description

Multi AV system means that the following systems are integrated.

AUDIO SYSTEM REFERENCE

1. AV control unit functions by transmitting/receiving data one by one with each unit (slave unit) that configures them completely as a master unit by connecting between units that configure the MULTI AV system with two AV communication lines (H, L).
2. Two AV communication lines (H, L) adopt a twisted pair line that is resistant to noise.
3. AV control unit is connected by CAN communication, and it receives data signals from the ECM, unified meter and A/C amp. It computes and displays fuel economy information values with the obtained information. The transmitting/receiving of data signals is performed by BCM. In addition, it transmits the required signal of vehicle setting and receives the response signal.
4. AV control unit is connected with display and serial communication, and it transmits the required signal of display and display control and receives the response signal from front display. Also, it is connected with satellite radio by serial communication, and it transmits the operating signal and receives the display signal. NOTE: AV control unit can perform CONSULT-III self-operating function and on board self-diagnosis. CONSULT-III self-diagnosis: refer to «CONSULT-III FUNCTION (MULTI AV)»(ref-368887-S03104820282010081300000) . On board self-diagnosis: refer to «DIAGNOSIS DESCRIPTION»(ref-368887-S01788833822010081300000) . On board self-diagnosis of TEL adapter unit can be performed. Refer to «DIAGNOSIS DESCRIPTION»(ref-368887-S03299053342010081300000) for on board self-diagnosis.

Scheme 2

1. Image and sound can be output from an external device by connecting a device with auxiliary input jacks.
2. Operation can be performed with multifunction switch and steering switch. Multifunction switch transmits operation signal to AV control unit with communication.

Scheme 3

Component Description

PART DESCRIPTION TABLE

Scheme 4

Note. A radio antenna base integrated with radio antenna and satellite radio antenna is adopted.

Scheme 5

The audio system is equipped with the following functions. Each function can be operated by multifunction switch, preset switch or steering switch. It indicates the operation status of AUDIO to display.

AUDIO SYSTEM FUNCTION TABLE

PART DESCRIPTION

Scheme 6

1. TEL adapter unit is controlled with AV communication from AV control unit.
2. The connection between portable telephone and TEL adapter unit is performed via Bluetooth™ communication.
3. The voice guidance signal is input from TEL adapter unit to AV control unit and output via BOSE amp. to front speaker when operating cellular phone.
4. TEL adapter unit has the on board self-diagnosis function. Refer to «DIAGNOSIS DESCRIPTION»(ref-368887-S03299053342010081300000) .

PART DESCRIPTION

Scheme 7

Scheme 8

1. Power is supplied to rear view camera from camera control unit and the rear view camera outputs the camera image to camera control unit when selector lever is set to reverse position and the reverse signal on camera control unit is input.
2. Camera control unit superimposes the guiding line and predicted course line to the image from rear view camera and outputs to front display unit. In this case, the reverse signal is also input to AV control unit. Therefore, AV control unit recognizes the selector lever as in the reverse position. And then AV control unit switches the image displayed by the communication signal between AV control unit and front display unit with the camera image.
3. AV control unit outputs camera image signal that is inputted from camera control unit to front display unit.
4. Camera control unit controls the direction and distance of predicted course line according to the sensor signal from steering angle sensor.
5. Steering angle sensor connected to the AV control unit and transmits the steering angle signal via CAN communication.
6. AV control unit determines whether rear view camera is equipped or not, based on the presence of camera connection recognition signal. It switches to rear view monitor image at the time of reverse signal input when rear view camera is equipped.
7. Warning message under the rear view monitor display is described by AV control unit.

Scheme 9

PART DESCRIPTION

Description

1. The trouble diagnosis function has a self-diagnosis mode for conducting trouble diagnosis automatically and a confirmation/adjustment mode for operating manually.
2. Self-diagnosis mode performs AV control unit diagnosis and the connection diagnosis between each of the units that make up the system, and it indicates the results to the display.
3. The confirmation/adjustment mode allows the technician to check, modify or adjust the vehicle signals and set values, as well as to monitor the system error records and system communication status. The checking, modifying or adjusting generally requires human intervention and judgment (the system cannot make judgment automatically).

ECU IDENTIFICATION

The part number of AV control unit is displayed.

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 independently). 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.

Refer to CAN COMMUNICATION SIGNAL TABLE .

Initial diagnosis of AV control unit.

Replace the AV control unit if this DTC is displayed. Refer to EXPLODED VIEW .

PART DESCRIPTION

Replace the AV control unit if this DTC is displayed. Refer to EXPLODED VIEW .

PART DESCRIPTION

Replace the AV control unit if this DTC is displayed. Refer to EXPLODED VIEW .

PART DESCRIPTION

PART DESCRIPTION

PART DESCRIPTION

PART 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.

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

Scheme 10

1. CHECK CONTINUITY RGB (R: RED) SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect front display unit connector and AV control unit connector. Check continuity between front display unit harness connector and AV control unit harness connector. CONTINUITY TABLE Front display unit AV control unit Continuity Connector Terminal Connector Terminal M71 17 M83 40 Existed Check continuity between front display unit harness connector and ground. CONTINUITY TABLE Front display unit Ground Continuity Connector Terminal M71 17 Not existed Is the inspection result normal? YES: GO TO 2 . NO: Repair harness or connector.
2. CHECK RGB (R: RED) SIGNAL Connect front display unit connector and AV control unit connector. Turn ignition switch ON. Check signal between front display unit harness connector and ground. CONNECTOR TERMINAL REFERENCE VALUE TABLE (+) (-) Condition Reference value Front display unit Connector Terminal M71 17 Ground Start confirmation/adjustment mode, and then display color bar by selecting "Color Spectrum Bar" on DISPLAY DIAGNOSIS screen. Is the inspection result normal? YES: Replace front display unit. NO: Replace AV control unit.

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

Scheme 11

1. CHECK CONTINUITY RGB (G: GREEN) SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect front display unit connector and AV control unit connector. Check continuity between front display unit harness connector and AV control unit harness connector. CONTINUITY TABLE Front display unit AV control unit Continuity Connector Terminal Connector Terminal M71 6 M83 39 Existed Check continuity between front display unit harness connector and ground. CONTINUITY TABLE Front display unit Ground Continuity Connector Terminal M71 6 Not existed Is the inspection result normal? YES: GO TO 2 . NO: Repair harness or connector.
2. CHECK RGB (G: GREEN) SIGNAL Connect front display unit connector and AV control unit connector. Turn ignition switch ON. Check signal between front display unit harness connector and ground. CONNECTOR TERMINAL REFERENCE VALUE TABLE (+) (-) Condition Reference value Front display unit Connector Terminal M71 6 Ground Start confirmation/adjustment mode, and then display color bar by selecting "Color Spectrum Bar" on DISPLAY DIAGNOSIS screen. Is the inspection result normal? YES: Replace front display unit. NO: Replace AV control unit.

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

Scheme 12

1. CHECK CONTINUITY RGB (B: BLUE) SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect front display unit connector and AV control unit connector. Check continuity between front display unit harness connector and AV control unit harness connector. CONTINUITY TABLE Front display unit AV control unit Continuity Connector Terminal Connector Terminal M71 18 M83 38 Existed Check continuity between front display unit harness connector and ground. CONTINUITY TABLE Front display unit Ground Continuity Connector Terminal M71 18 Not existed Is the inspection result normal? YES: GO TO 2 . NO: Repair harness or connector.
2. CHECK RGB (B: BLUE) SIGNAL Connect front display unit connector and AV control unit connector. Turn ignition switch ON. Check signal between front display unit harness connector and ground. CONNECTOR TERMINAL REFERENCE VALUE TABLE (+) (-) Condition Reference value Front display unit Connector Terminal M71 18 Ground Start confirmation/adjustment mode, and then display color bar by selecting "Color Spectrum Bar" on DISPLAY DIAGNOSIS screen. Is the inspection result normal? YES: Replace front display unit. NO: Replace AV control unit.

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

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

Scheme 13

1. CHECK CONTINUITY RGB AREA (YS) SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect front display unit connector and AV control unit connector. Check continuity between front display unit harness connector and AV control unit harness connector. CONTINUITY TABLE Front display unit AV control unit Continuity Connector Terminal Connector Terminal M71 9 M83 43 Existed Check continuity between front display unit harness connector and ground. CONTINUITY TABLE Front display unit Ground Continuity Connector Terminal M71 9 Not existed Is the inspection result normal? YES: GO TO 2 . NO: Repair harness or connector.
2. CHECK RGB AREA (YS) SIGNAL Connect front display unit connector and AV control unit connector. Turn ignition switch ON. Check signal between front display unit harness connector and ground. CONNECTOR TERMINAL REFERENCE VALUE TABLE (+) (-) Condition Reference value (Approx.) Front display unit Connector Terminal M71 9 Ground At RGB image is displayed 5.0 V At AUX image is displayed Is the inspection result normal? YES: Replace front display unit. NO: Replace AV control unit.

In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizontal synchronizing (HP) signal from front 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 14

1. CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect front display unit connector and AV control unit connector. Check continuity between front display unit harness connector and AV control unit harness connector. CONTINUITY TABLE Front display unit AV control unit Continuity Connector Terminal Connector Terminal M71 8 M83 45 Existed Check continuity between front display unit harness connector and ground. CONTINUITY TABLE Front display unit Ground Continuity Connector Terminal M71 8 Not existed Is the inspection result normal? YES: GO TO 2 . NO: Repair harness or connector.
2. CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL Connect front display unit connector and AV control unit connector. Turn ignition switch ON. Check signal between front display unit harness connector and ground. CONNECTOR TERMINAL REFERENCE VALUE TABLE (+) (-) Reference value Front display unit Connector Terminal M71 8 Ground Is the inspection result normal? YES: Replace AV control unit. NO: Replace front display unit.

In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizontal synchronizing (HP) signal from front 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 15

1. CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect front display unit connector and AV control unit connector. Check continuity between front display unit harness connector and AV control unit harness connector. CONTINUITY TABLE Front display unit AV control unit Continuity Connector Terminal Connector Terminal M71 20 M83 57 Existed Check continuity between front display unit harness connector and ground. CONTINUITY TABLE Front display unit Ground Continuity Connector Terminal M71 20 Not existed Is the inspection result normal? YES: GO TO 2 . NO: Repair harness or connector.
2. CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL Connect front display unit connector and AV control unit connector. Turn ignition switch ON. Check signal between front display unit harness connector and ground. CONNECTOR TERMINAL REFERENCE VALUE TABLE (+) (-) Reference value Front display unit Connector Terminal M71 20 Ground Is the inspection result normal? YES: Replace AV control unit. NO: Replace front display unit.

1. Transmits the image signal of AUX device from auxiliary input jacks to AV control unit.
2. AV control unit transmits the image signal that is inputted to the front display unit.

Scheme 16

Scheme 17

1. CHECK CONTINUITY AUX IMAGE SIGNAL CIRCUIT (AUX INPUT JACKS AND AV CONTROL UNIT) Turn ignition switch OFF. Disconnect auxiliary input jacks connector and AV control unit connector. Check continuity between auxiliary input jacks harness connector and AV control unit harness connector. CONTINUITY TABLE Auxiliary input jacks AV control unit Continuity Connector Terminal Connector Terminal M154 7 M84 66 Existed Check continuity between auxiliary input jacks harness connector and ground. CONTINUITY TABLE Auxiliary input jacks Ground Continuity Connector Terminal M154 7 Not existed Is the inspection result normal? YES: GO TO 2 . NO: Repair harness or connector.
2. CHECK AUX IMAGE SIGNAL (AUX INPUT JACKS TO AV CONTROL UNIT) Connect auxiliary input jacks connector and AV control unit connector. Turn ignition switch ON. Check signal between auxiliary input jacks harness connector and ground. CONNECTOR TERMINAL REFERENCE VALUE TABLE (+) (-) Condition Reference value Auxiliary input jacks Connector Terminal M154 7 Ground At AUX image is displayed. Is the inspection result normal? YES: GO TO 3 . NO: Check that there is no malfunction in the external device.
3. CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT AND FRONT DISPLAY UNIT) Turn ignition switch OFF. Disconnect front display unit connector and AV control unit connector. Check continuity between front display unit harness connector and AV control unit harness connector. CONTINUITY TABLE Front display unit AV control unit Continuity Connector Terminal Connector Terminal M71 15 M83 36 Existed Check continuity between front display unit harness connector and ground. CONTINUITY TABLE Front display unit Ground Continuity Connector Terminal M71 15 Not existed Is the inspection result normal? YES: GO TO 4 . NO: Repair harness or connector.
4. CHECK COMPOSITE IMAGE SIGNAL Connect AV control unit connector and front display unit connector. Turn ignition switch ON. Check signal between front display unit harness connector and ground. CONNECTOR TERMINAL REFERENCE VALUE TABLE (+) (-) Condition Reference value Front display unit Connector Terminal M71 15 Ground At AUX image is displayed. Is the inspection result normal? YES: Replace front display unit. NO: Replace AV control unit.

The disk eject signal is output to AV control unit when the eject switch of multifunction switch is pressed.

1. Camera control unit outputs camera power supply to rear view camera and inputs rear view camera image signal from rear view camera when the reverse signal is input.
2. The camera control unit that inputs the camera image signal transmits the camera image signal to the AV control unit.

Scheme 18

1. CHECK CONTINUITY CAMERA POWER SUPPLY CIRCUIT Turn ignition switch OFF. Disconnect camera control unit connector and rear view camera connector. Check continuity between camera control unit harness connector and rear view camera harness connector. CONTINUITY TABLE Camera control unit Rear view camera Continuity Connector Terminal Connector Terminal B50 8 D121 1 Existed Check continuity between camera control unit harness connector and ground. CONTINUITY TABLE Camera control unit Ground Continuity Connector Terminal B50 8 Not existed Is inspection result normal? YES: GO TO 2 . NO: Repair harness or connector.
2. CHECK VOLTAGE CAMERA POWER SUPPLY Connect camera control unit connector and rear view camera connector. Turn ignition switch ON. Shift position is "R" Check voltage between camera control unit harness connector and ground. VOLTAGE SPECIFICATION (+) (-) Condition Voltage (Approx.) Camera control unit Connector Terminal B50 8 Ground Shift position is "R" 6.0 V Is inspection result normal? YES: GO TO 3 . NO: Replace camera control unit.
3. CHECK CONTINUITY CAMERA IMAGE SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect camera control unit connector and rear view camera connector. Check continuity between camera control unit harness connector and rear view camera harness connector. CONTINUITY TABLE Camera control unit Rear view camera Continuity Connector Terminal Connector Terminal B50 6 D121 3 Existed Check continuity between camera control unit harness connector and ground. CONTINUITY TABLE Camera control unit Ground Continuity Connector Terminal B50 6 Not existed Is inspection result normal? YES: GO TO 4 . NO: Repair harness or connector.
4. CHECK CAMERA IMAGE SIGNAL Connect camera control unit connector and rear view camera connector. Turn ignition switch ON. Shift position is "R" Check signal between camera control unit harness connector and ground. CONNECTOR TERMINAL REFERENCE VALUE TABLE (+) (-) Condition Reference value Camera control unit Connector Terminal B50 6 Ground At rear view camera image is displayed. Is inspection result normal? YES: Replace camera control unit. NO: Replace rear view camera.

1. Camera control unit outputs camera ON signal to rear view camera and inputs rear view camera image signal from rear view camera when the reverse signal is input.
2. The camera control unit that inputs the camera image signal transmits the camera image signal to the AV control unit.

Scheme 19

1. CHECK CONTINUITY CAMERA IMAGE SIGNAL CIRCUIT (CAMERA CONTROL UNIT TO AV CONTROL UNIT) Turn ignition switch OFF. Disconnect camera control unit connector and AV control unit connector. Check continuity between camera control unit harness connector and AV control unit harness connector. CONTINUITY TABLE Camera control unit AV control unit Continuity Connector Terminal Connector Terminal B50 12 M84 65 Existed Check continuity between camera control unit harness connector and ground. CONTINUITY TABLE Camera control unit Ground Continuity Connector Terminal B50 12 Not existed Is inspection result normal? YES: GO TO 2 . NO: Repair harness or connector.
2. CHECK CAMERA IMAGE SIGNAL (CAMERA CONTROL UNIT TO AV CONTROL UNIT) Connect camera control unit connector and AV control unit connector. Turn ignition switch ON. Check signal between camera control unit harness connector and ground. CONNECTOR TERMINAL REFERENCE VALUE TABLE (+) (-) Condition Reference value Camera control unit Connector Terminal B50 12 Ground At rear view camera image is displayed. Is inspection result normal? YES: Replace AV control unit. NO: Replace camera control unit.

AV control unit that inputs the camera image signal and AUX image signal transmits the composite image signal to the front display unit.

Scheme 20

1. CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO FRONT DISPLAY UNIT) Turn ignition switch OFF. Disconnect AV control unit connector and front display unit connector. Check continuity between AV control unit harness connector and front display unit harness connector. CONTINUITY TABLE AV control unit Front display unit Continuity Connector Terminal Connector Terminal M83 36 M71 15 Existed Check continuity between AV control unit harness connector and ground. CONTINUITY TABLE AV control unit Ground Continuity Connector Terminal M83 36 Not existed Is inspection result normal? YES: GO TO 2 . NO: Repair harness or connector.
2. CHECK COMPOSITE IMAGE SIGNAL (AV CONTROL UNIT TO FRONT DISPLAY UNIT) Connect AV control unit connector and front display unit connector. Turn ignition switch ON. Check signal between AV control unit harness connector and ground. CONNECTOR TERMINAL REFERENCE VALUE TABLE (+) (-) Condition Reference value AV control unit Connector Terminal M83 36 Ground At rear view camera or AUX image is displayed. Is inspection result normal? YES: Replace front display unit. NO: Replace AV control unit.

Supply power from TEL adapter unit to microphone. The microphone transmits the sound/voice to the microphone.

Scheme 21

1. CHECK CONTINUITY BETWEEN TEL ADAPTER UNIT AND MICROPHONE CIRCUIT Turn ignition switch OFF. Disconnect TEL adapter unit connector and microphone connector. Check continuity between TEL adapter unit harness connector and microphone harness connector. CONTINUITY TABLE TEL adapter unit Microphone Continuity Connector Terminals Connector Terminals B237 7 R17 1 Existed 8 2 29 4 Check continuity between TEL adapter unit harness connector and ground. CONTINUITY TABLE TEL adapter unit Ground Continuity Connector Terminals B237 7 Not existed 29 Is the inspection result normal? YES: GO TO 2 . NO: Repair harness or connector.
2. CHECK VOLTAGE MICROPHONE VCC Connect TEL adapter unit connector. Turn ignition switch ON. Check voltage between TEL adapter unit harness connector. VOLTAGE SPECIFICATION (+) (-) Voltage (Approx.) TEL adapter unit TEL adapter unit Connector Terminal Connector Terminal B237 29 B237 8 5.0 V Is the inspection result normal? YES: GO TO 3 . NO: Replace TEL adapter unit.
3. CHECK MICROPHONE SIGNAL Turn ignition switch OFF. Connect microphone connector. Turn ignition switch ON. Check signal between TEL adapter unit harness connector. CONNECTOR TERMINAL REFERENCE VALUE TABLE (+) (-) Condition Reference value TEL adapter unit TEL adapter unit Connector Terminal Connector Terminal B237 7 B237 8 Give a voice. Is the inspection result normal? YES: Replace TEL adapter unit. NO: Replace microphone.

TEL adapter unit identifies the vehicle model according to the control signal and performs the control.

1. AV control unit transmits the mode change signal to BOSE amp.
2. Driver's Audio Stage controls the speaker's output characteristic by BOSE amp. so that the driver's seat is to be the center of sounds.

Satellite radio tuner and AV control unit are connected with a serial communication. They transmit the operation signal from AV control unit to satellite radio tuner, and transmit the display signal from satellite radio tuner to AV control unit.

Scheme 22

1. CHECK CONTINUITY COMMUNICATION SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect satellite radio tuner connector and AV control unit connector. Check continuity between satellite radio tuner harness connector and AV control unit harness connector. CONTINUITY TABLE Satellite radio tuner AV control unit Continuity Connector Terminals Connector Terminals B236 9 M82 29 Existed 10 30 Check continuity between satellite radio tuner harness connector and ground. CONTINUITY TABLE Satellite radio tuner Ground Continuity Connector Terminals B236 9 Not existed 10 Is the inspection result normal? YES: GO TO 2 . NO: Repair harness or connector.
2. CHECK COMMUNICATION SIGNAL (SAT-->CONT) Connect satellite radio tuner connector and AV control unit connector. Turn ignition switch ON. Check signal between satellite radio tuner harness connector and ground. CONNECTOR TERMINAL REFERENCE VALUE TABLE (+) (-) Condition Reference value Satellite radio tuner Connector Terminal B236 9 Ground When satellite radio mode is selected. Is the inspection result normal? YES: GO TO 3 . NO: Replace satellite radio tuner.
3. CHECK COMMUNICATION SIGNAL (CONT-->SAT) Check signal between satellite radio tuner harness connector and ground. CONNECTOR TERMINAL REFERENCE VALUE TABLE (+) (-) Condition Reference value Satellite radio tuner Connector Terminal B236 10 Ground When satellite radio mode is selected. Is the inspection result normal? YES: Replace satellite radio tuner. NO: Replace AV control unit.

Request signal transmits the signal to recognize the connection of satellite radio tuner from satellite radio tuner to AV control unit.

Scheme 23

1. CHECK CONTINUITY REQUEST SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect satellite radio tuner connector and AV control unit connector. Check continuity between satellite radio tuner unit harness connector and AV control unit harness connector. CONTINUITY TABLE Satellite radio tuner AV control unit Continuity Connector Terminal Connector Terminal B236 8 M82 28 Existed Check continuity between satellite radio tuner harness connector and ground. CONTINUITY TABLE Satellite radio tuner Ground Continuity Connector Terminal B236 8 Not existed Is the inspection result normal? YES: GO TO 2 . NO: Repair harness or connector.
2. CHECK COMMUNICATION SIGNAL Connect satellite radio tuner connector and AV control unit connector. Turn ignition switch ON. Check signal between satellite radio tuner harness connector and ground. CONNECTOR TERMINAL REFERENCE VALUE TABLE (+) (-) Condition Reference value Satellite radio tuner Connector Terminal B236 8 Ground When satellite radio mode is selected. Is the inspection result normal? YES: Replace AV control unit. NO: Replace satellite radio tuner.

Transmits the steering switch signal to AV control unit.

Transmits the steering switch signal to AV control unit.

Transmits the steering switch signal to AV control unit.

OPERATION

SYMPTOM TABLE

Vehicle operation information, refer to Owner's Information.

BASIC OPERATIONS

SYMPTOM TABLE

See also:
• CAN COMMUNICATION SIGNAL TABLE