Function

RTI With Integrated DVD







RTI with CD changer







- The GPS antenna (16/47) receives signals from a minimum of three and a maximum of eight GPS satellites. These signals are then sent on to the GPS receiver in the RTI control module (16/45).
- The position of the car is calculated and a route is displayed for the selected destination.
- Data for voice guiding for the selected route is transmitted on the serial bus (Melbus) between the RTI control module and the audio module (16/1).
- In order for the RTI system to select a route, a DVD (16/45) or CD (16/48) must be available with the road network. For CD changer systems the data is transmitted on a serial bus (Melbus) to the RTI.
- Data about speed, the wheel rotation counter and parking brake is sent using CAN communication from the central electronic module (4/56), ABS (4/16) and driver information module DIM(5/1).
- Data is sent to the display screen (16/46) from the RTI control module on serial buses.
- Commands from the remote control are sent from the display screen (16/46) to the RTI unit (16/45) on a serial bus (remocon signal).
- The menu is accessed and used via the buttons on the reverse of the steering wheel. Data is sent from the steering wheel module (3/130) to the RTI unit (16/45) via the Control area network (CAN). There are three steering wheel buttons which are used to control the menu on the screen. There is a four-way switch on which each part of the switch moves the cursor upwards, downwards, to the left or to the right. There is an ENTER button and a BACK button.
- When a new GPS antenna is installed for the RTI system, it may take up to 15 minutes before the GPS receiver has the correct information.

Traffic message channel (TMC) reception







- The role of the TMC receiver is to receive traffic information on the FM wavelength. The Japanese system is called FM multiplex.
- The TMC receiver is integrated in the RTI system and is connected to the antenna system for the FM radio.
- There is no traffic information system in the USA.
- The TMC data signal is received by the TMC/FM multiplex antenna (16/68) which is located in the rear bumper. The signal is boosted by the antenna amplifier (16/67) before it is sent to the RTI unit (16/45). This data is displayed on the screen (16/46).

TV reception







- The TV antenna pattern on the rear windshield (16/54 for the V70/V70XC) receives signals from the TV network. These signals are boosted in the TV antenna amplifier (16/71) which sends the signals to the TV receiver (16/36). The signals are sent on to the RTI unit (16/45) on a serial bus (Melbus). The RTI unit send the signals containing sound information to the audio module (16/1) on a series bus (Melbus) and signals containing picture information to the display screen (16/46).
- When the vehicle speed exceeds 7 km/h the RTI changes to navigation automatically.
- The SOURCE button on the audio module (16/1) or on the remote control is used to set the TV stations.

RTI diagnostic functions

General
The RTI control module has a built-in diagnostic system, the Volvo on-board diagnostic (OBD) system, which continuously monitors itself and the input and output signals.

Diagnostic trouble codes (DTCs)
A diagnostic trouble code (DTC) is stored if the RTI detects a fault. A fault which is detected in the latest driving cycle is defined as permanent. Other detected faults are defined as intermittent.

Reading and erasing diagnostic trouble codes (DTCs)
- Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
- Diagnostic trouble codes (DTCs) can only be erased when all diagnostic trouble codes (DTCs) have been read at least once.

Reading off the control module identification
VADIS/VIDA identifies the control modules by reading off a number of codes of RTI memory.

The codes contains information about the RTI control module's:
- hardware P/N (control modules without software)
- hardware serial number (control modules without software)
- software P/N
- P/N diagnostic software.