Mark II Navigation Diagnostic Mode Displays
NAVIGATION SYSTEM DIAGNOSTIC MODE DISPLAYS
The Mark II system does not communicate with the DIS. It does however provide an onboard diagnostic mode on screen display function.
These screens provide system hardware/software identification numbers and status of Navigation specific functions for use as a diagnostic tool. The screens are accessed as follows:
- From the main menu select "Set".
- Once in the Set function, press and hold the menu button for 8 seconds.
- The first screen to appear is the SERVICE MODE menu.
The On-board monitor and Video module selections are not functional even though they are displayed.
The first accessible function is the NAVI/GRAPHIC ELEMENT This screen is for identification of hardware/software specific index versions for the installed system.
The next available selection from the service mode menu is GPS. Pressing GPS brings up the GPS version display.
This display provides the GPS receiver module hardware version number and date of programmed software.
Pressing the functions button in the lower right corner of this screen provides a sub-selection menu of additional GPS system status.
The sub-selection menu additionally includes GPS "Status" and "Tracking" choices.
- GPS Status provides information on the exact coordinates of the vehicle based on the calculations of the GPS receiver module.
- GPS Tracking provides information about the individual satellites currently sending signals to the GPS receiver module.
The next selection available from the SERVICE MODE menu is "Sensor check" which provides:
- Wheel speed input (only one wheel speed signal, displayed in the right side window),
- Total number of GPS satellites currently providing signals,
- What mode the GPS receiver module is currently in; (ie: Search)
- The Gyro status provides the millivoltage value the Nav computer is utilizing for the current vehicle position. This area also includes an icon representing what direction the vehicle is heading in.
- The direction status relates to what gear the vehicle is currently in (forward or reverse).
The last selection available in the Service Mode menu is the VIN entry display. The VIN is entered at the VPC when prepped prior to distribution. This is for the VIN display in the Emergency program if needed when calling the Cross Country Group Roadside Assistance Program. Additionally, if the vehicle is equipped with a Phase V phone the system will automatically utilize the entered VIN as follows.
Similar to the previous phone system, the Phase V phone has the capability to contact Cross Country Group using the "Assist" or "Emergency" button from the Emergency or Telephone functions.
What's new for the Phase V system is the use of dual tone multi frequency (DTMF) signalling.
DTMF signalling provides a download of the VIN, the telephone number of the Phase V phone and the vehicle coordinates when the assist button was pressed. This information is displayed on a computer screen of the Cross Country Group "assist" personnel prior to any verbal communication taking place.
Through a data base, the VIN provides the Owner's Name. This, in conjunction with the vehicle coordinates and the phone number provides the "assist" personnel with crucial preliminary information.
When the call is patched in from the vehicle, the assist personnel can answer appropriately for an "assist" or "emergency" situation. This quick response with the owner's pertinent information provides an added personnel touch and time savings in an emergency situation.
The VIN is entered at the VPC for all vehicles (with or without a Phase V phone). If the VIN has been incorrectly entered it can be changed by turning and pressing the rotary knob when the correct letter or digit of the last seven character of the VIN is displayed.