BMW 7 Series: GPS Receiver Module

The GPS receiver module is also known as the HIP module (Host Independence Positioning).

Location and route of the vehicle are calculated in the navigation system with the data from the GPS receiver module.

This module was already integrated in the head unit with the CCC system. It has the task of converting the signals received from the GPS antenna together with the data from the DSC control unit and yaw rate sensor.

The following information is calculated in the GPS receiver module:

• Longitude
• Latitude
• Altitude above sea level
• Direction (bearing)
• Speed

This information is known as Almanac data and it is transferred to the navigation system for further processing.

The Almanac data must be permanently stored for future reference. One of the reasons for this is that it takes a long time for data to be received again from satellites after switching to terminal 15 from terminal status ignition "OFF".

This Almanac data ensures the position of the vehicle is recognized immediately after starting the vehicle.

Therefore the navigation system can also be used immediately.

Compared to the GPS receiver module of the Car Communication Computer the GPS receiver module in the CIC has been greatly reduced in size while maintaining the same functionality.

The graphic shows the size of the GPS receiver module compared to the main connection plug of the head unit.

INDEX REFERENCE CHART

1. GPS receiver module
2. CIC main connection plug

Fig. 95: Identifying GPS Receiver Module And CIC Main Connection Plug

Yaw Rate Sensor

The Car Information Computer features a yaw rate sensor. It supplies the data relating to changes in driving direction for the navigation system.

This data is required for the purpose of determining the exact position as satellite signals cannot be received everywhere (tunnels, underground parking lot etc.).

The yaw rate sensor is a separate module soldered on the main board. It has been greatly reduced in size compared to the yaw rate sensor in the Car Communication Computer.

Unlike with CCC, it is no longer possible to replace the yaw rate sensor separately from the entire unit.

Fig. 96: Identifying Yaw Rate Sensor Soldered To CIC Main Board

Gateway Processor

The gateway processor converts all relevant data of the K-CAN system into MOST-bus telegrams and vice versa.

The electronic module is soldered into the board directly under the hard disk drive and cannot be replaced separately.

The gateway processor has its own control unit address in the BMW diagnosis system.

Fig. 97: Identifying CIC System's Gateway Processor

Analog Tuner Modules

The tuner modules in the Car Information Computer have enhanced functions compared to the tuners used in the CCC system. The FM/AM and the traffic information (RTTI) range have been expanded.

FM and AM Station List

A double tuner module (see item 1) is installed in the CIC for the FM/AM range.

While one tuner in the network receives the required station and outputs the music signal, the other tuner works in the background searching the station landscape for additional signals and shows them on the display. ("All stations" menu item).

This function in the FM range is already known from the CCC and is now available in the AM range.

The third module in the tuner network enables expansion of the FM-RTTI (Real Time Traffic Information) functions. The FM/AM double tuner module and the FM-RTTI module combine to form the triple tuner.

The RTTI messages are used by the navigation system for displaying congestion and traffic information in the form of pictograms.

Fig. 98: Identifying FM Tuner Module Components

INDEX REFERENCE CHART

1. FM/AM double tuner module
2. FM-RTTI module
3. Black FAKRA connector below the CIC heat sink

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