Cellular Phone: Description and Operation

Cellular Phone

COMPONENT LOCATION





OVERVIEW

The system allows the driver to use a Bluetooth equipped cellular phone handset through the vehicles Information and Entertainment system.

NOTE: There is no physical connection (cradle) between the phone handset and the telephone control module. Communications between the 2 components are purely Bluetooth. This can limit the available functions dependant on the handset used.

The cellular phone system comprises the following components:
^ Telephone control module
^ Microphone

Phone dialing is achieved using one of the following methods:
^ Dialing a number using the ICP keypad
^ Selecting a number from the handsets phonebook via the ICM
^ Selecting from the handsets call register via the ICM

The Telephone control module is connected to the Information and Entertainment system on the MOST ring. This allows audio and control signals to be routed to and from the telephone control module. The telephone control module has an integral Bluetooth antenna.

Telephone handsets must be paired with the telephone control module before they can be used with the vehicle system. Up to five telephone handsets can be paired with the vehicle, but only one telephone can used at a time.

PHONE MODULE





The telephone control module is located in the rear RH side of the loadspace. The phone module is connected on the MOST ring to the rest of the entertainment system.

MICROPHONE





The microphone is located in the overhead console which surrounds the front interior lamp. The microphone is hardwired to the IAM.

CONTROL SWITCHES





The steering wheel mounted telephone control switches are located on the RH side of the steering wheel. The switches are a resistive ladder type which return a different voltage to the ICM in response to different switches being pressed.

The following table details the cellular phone steering wheel switch functions.





ICM Control Switches





Accessing the cellular phone system from the ICM allows the user various options depending on the Bluetooth version of the phone.

TELEPHONE VOICE CONTROL
The vehicle system is able to use any voice tags which are stored in the mobile telephone. There is no voice dialing feature of the cellular telephone system.

Voice dialing is accessed via a long press of the RH rotary ENTER button. The ICM displays that Voice tag dialing is in progress and an audible prompt is generated from the telephone control module. After the prompt the handset waits several seconds for the voice command.

PRINCIPLES OF OPERATION
The phone system is controlled from the ICM and/or the steering wheel mounted switches. Control signals from the steering wheel switches are sent via the clock spring and the steering wheel module to the ICM. The ICM sends control signals on the MOST ring to the telephone control module. Audio is sent on the MOST ring to the audio amplifier and is output on the vehicle speaker system.

CONTROL DIAGRAM