DESCRIPTION
Multi AV system means that the following systems are integrated.
| FUNCTION NAME |
|---|
| Audio function |
| DVD playback function |
| Bluetooth® hands-free phone function |
| Mobile entertainment system |
| Auxiliary input function |
| Rear view monitor function |
| Vehicle information function |
| Auto Light adjustment system |
- The AV control unit diagnosis function starts up with multifunction switch operation and the AV control unit performs a diagnosis for each unit in the system during the on board diagnosis.
- Perform a CONSULT diagnosis if the on board diagnosis does not start, e.g., the screen does not display anything, the multifunction switch does not function, etc.
- The trouble diagnosis function has a self-diagnosis mode for conducting trouble diagnosis automatically and a confirmation/adjustment mode for operating manually.
- Self-diagnosis mode performs the 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 front display unit.
- 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 require human intervention and judgment (the system cannot make judgment automatically).
ECU IDENTIFICATION
The part number of AV control unit is displayed.
During on board diagnosis the diagnosis function of TEL adapter unit starts with the operation of the steering switch and performs the diagnosis when ignition switch ACC.
- Since vehicle specifications are not included in the AV control unit after replacement, it is required to write vehicle specifications with CONSULT.
- Configuration has three functions as follows.
| Function | Description | |
|---|---|---|
| Read/Write Configuration | Before Replace ECU | Allows the reading of vehicle specification written in AV control unit to store the specification in CONSULT. |
| After Replace ECU | Allows the writing of the vehicle information stored in CONSULT into the AV control unit. | |
| Manual Configuration | Allows the writing of the vehicle specification into the AV control unit by hand. | |
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.
CAN Communication Signal Chart. Refer to " CAN COMMUNICATION SYSTEM: CAN COMMUNICATION SIGNAL CHART ".
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.
Transmit the image displayed with AV control unit with RGB signal to the front display unit.
Transmit the image displayed with AV control unit with RGB signal to the front display 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.
In composite image (DVD, auxiliary input, and camera images), 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.
In composite image (DVD, auxiliary input, and camera images), 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.
The AV control unit outputs image signal (DVD, auxiliary input, and camera) to the front display unit and rear display unit by composite image signal.
The AV control unit outputs image signal (DVD, auxiliary input, and camera) to the front display unit and rear display unit by composite image signal.
- Transmits the image signal of AUX (auxiliary input) device from auxiliary input jacks to AV control unit.
- The AV control unit transmits the AUX image signal to the front display unit by composite image signal.
- AV 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.
- The AV control unit that inputs the camera image signal transmits the camera image signal to the front display unit.
The disk eject switch outputs disk eject signal to the AV control unit when the switch of disk eject switch is pressed.
TEL adapter unit supplies power to microphone. The microphone transmits the sound voice to the TEL adapter unit.
TEL adapter unit identifies the vehicle model according to the control signal and performs the control.
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
| Symptoms | Check items | Probable malfunction location |
|---|---|---|
| Multifunction switch and preset switch operation does not work. | All switches cannot be operated. "MULTI AV" is displayed on system selection screen when the CONSULT is started. | Multifunction switch power supply and ground circuit. AV communication circuit between AV control unit and multifunction switch. Perform CONSULT self-diagnosis. Refer to " CONSULT FUNCTION ". |
| All switches cannot be operated. "MULTI AV" is not displayed on system selection screen when the CONSULT is initialized. | AV control unit power supply and ground circuit malfunction. Refer to " AV CONTROL UNIT: DIAGNOSIS PROCEDURE ". | |
| Only specified switch cannot be operated. | Multifunction switch or preset switch malfunction. Perform multifunction switch and preset switch self-diagnosis function. Refer to " ON BOARD DIAGNOSIS FUNCTION ". | |
| Fuel economy display is abnormal. | There is malfunction in the CONSULT "self-diagnosis result" of "MULTI AV". Refer to " CONSULT FUNCTION ". | Perform detected DTC diagnosis. Refer to " DTC INDEX ". |
| There is no malfunction in the CONSULT "self-diagnosis result" of "MULTI AV". Refer to " CONSULT FUNCTION ". | Ignition signal circuit malfunction. (AV control unit) |
BASIC OPERATIONS
| Symptom | Possible cause | Possible solution |
|---|---|---|
| No image is displayed. | The brightness is at the lowest setting. | Adjust the brightness of the display. |
| The systems in the video mode. | Press "DISC-AUX" to change the mode. | |
| The display is turned off. | Press " / OFF" to turn on the display. | |
| Screen not clear. | Contrast setting is not appropriate. | Adjust the contrast of the display. |
| The screen is too dim. The movement is slow. | The temperature in the interior of the vehicle is low. | Wait until the interior of the vehicle has warmed up. |
| Some pixels in the display are darker or brighter than others. | This condition is an inherent characteristic of liquid crystal displays. | This is not a malfunction. |
| Some menu items cannot be selected. | Some menu items become unavailable while the vehicle is driven. | Park the vehicle in a safe location, and then operate the multi AV system. |