Diagnostics

DIAGNOSTICS

The TSD and the navigation computer both have built in self tests that allow the technician to diagnose fault conditions. Fault codes and diagnostics can also be achieved via T4.

TSD Diagnostics
The TSD has in built diagnostics to aid the diagnosis of system faults. The diagnostics allow the technician to interrogate the following:
^ Hard key function
^ Touch screen function.
^ Video input.
^ RGB video.
^ Vehicle signals.
^ Self test.
^ Configurations
^ Vehicle configurations
^ MOST ring function.

The built in diagnostics are accessed as follows:

^ Once the system is powered up enter the Home menu page.
^ Press and hold the TSD in the center at the top of the screen for approximately 5 seconds and then press the navigation hard key.
^ A Diag PIN Entry box will appear, type in the access code 753.
^ Once this code has been accepted the Diagnostic Menu screen will be displayed.

Hard Key Test Screen
The hard key test is used to determine the function of the two switches integrated into the TSD. Pressing either of the buttons will turn the corresponding icon on the screen green if it is functioning correctly.

Touch Screen Test Screen
Entering the Touch screen test screen allows the technician to test the physical side of the touch screen. The technician can choose between checking the screen integrity and re-calibrating the screen. Using the Touch Switch Check button will display a blank screen. Touching the screen in any place will give a series of co-ordinates. If a faulty area of the screen is touched the co-ordinates will not display.

Re-calibrating the screen allows the technician to align the touch screen co-ordinates to the pressing of the screen. This is achieved by pressing a series of on screen targets.

Vehicle Signals
The vehicle signals screen displays the inputs from other vehicle system to the TSD. These signals include:
^ Battery voltage
^ Lights (on or off)
^ Ambient light sensor voltage
^ Graphic illumination dimming duty
^ Output audio allocation
^ PCB temp
^ Speed inhibit (on or off)
^ MOST FOT temperature
^ Parking position (electric park brake on or off)
^ Backlight PWM duty
^ Beep volume
^ Beep tone.

Video Input Test
This screen will allow the testing of video inputs that are connected to the TSD. This includes TV/DVD Rear Seat Entertainment (RSE) and television.

RGB color Test
This function allows the technician to test the colors generated by the TSD. A second screen displays six solid colors, selecting the color will fill the screen with the chosen color and pressing the TSD again will revert back to the color test screen.

Self Test
The self test function displays any fault codes that are present for the TSD. The screen also displays the current state of the ignition switch and the battery voltage. Two additional buttons in the screen allow the technician to clear the fault codes and to test the TSD.

Configurations
The configurations screen displays information about the TSD and the navigation computer. Switching between the two components is achieved via the soft key at the top LH corner of the screen.

The information contained in the screens is as follow:
^ Vehicle type
^ Component serial number
^ Component part number
^ Component part level
^ CPU/bootloader lever
^ Main CPU application version
^ Sub CPU software version
^ Private CAN database version.

Vehicle Configurations
Selecting the vehicle configurations option allows the technician to inspect the components fitted to the vehicle entertainment system. There are four screens which can be navigated through via the next and previous buttons.

MOST Test
The MOST test screen displays information about the MOST signals being sent around the MOST ring. Using any part of the audio system will bring up the MOST message on the screen. This can be used to help diagnose MOST related faults.

Navigation Computer Diagnostics
The navigation computer has in built diagnostics to aid the diagnosis of system faults. The diagnostics allow the technician to interrogate the following:
^ Navigation info
^ Parts info
^ Manual check
^ Self check.

Each area has sub level of menus to access further information.

The built in diagnostics are accessed as follows:
^ Once the system is powered up enter the navigation system via the navigation hard key.
^ Agree to the disclaimer screen.
^ Enter the navigation home menu.
^ Press and hold the TSD in the center at the top of the screen.
^ A Diag PIN Entry box will appear, type in the access code 753.

Once this code has been accepted the on screen diagnostics menu will be displayed. The menu has the following options:
^ Navigation info
^ Manual check
^ Parts info
^ Self check

Navigation Info
The navigation info menu has three sub menus:
^ Vehicle signals
^ GPS information
^ Reset position

Parts Info
Parts info displays information on the system component and software versions.

Manual Check
The manual check menu enables the technician to complete the following self tests:
^ Navi RGB screen test.
^ Microphone input level test.
^ Voice output test.

Self Check
Self check runs an internal check on the navigation computer and displays any fault codes on the TSD.

Navigation System DTC (diagnostic trouble code)