System Diagram

MODELS WITH USB CONNECTION FUNCTION

NOTE

:
An antenna base integrated with radio antenna amp. is adopted.

MODELS WITHOUT USB CONNECTION FUNCTION

NOTE

:
An antenna base integrated with radio antenna amp. is adopted.

System Description

AUDIO SYSTEM

Audio functions

AUDIO FUNCTION

AM/FM Radio
• AM/FM radio tuner is built into audio unit.

• Radio signals are received by radio antenna, next they are amplified by antenna amp., and finally the they are input to audio unit. (Antenna amp. is built into antenna base.) • Audio unit outputs the sound signal to each speaker.

CD
• CD function is built into audio unit.

• Audio unit outputs sound signal to each speaker when CD is inserted to audio unit.

Speed Sensitive Volume
• Volume level of this system gone up and down automatically in proportion to the vehicle speed.

• The control level can be selected by the customer.

Auxiliary input
• When the external device is connected to the auxiliary (AUX) input jack of the audio unit, the external device inputs a sound signal to the audio unit.

• When AUX mode is selected, audio unit outputs sound signal to each speaker.

USB Connection
• iPod® or music files in USB memory can be played.

• iPod® sound signals are transmitted from USB connector to each speaker via audio unit.

• iPod® is recharged when connected to USB connector.

iPod® is a trademark of Apple inc., registered in the U.S. and other countries.

Bluetooth™ Audio Mode
• Bluetooth™ audio function is built into audio unit.

• Bluetooth™ audio can play music data in the portable audio by means of Bluetooth™ communications between the portable audio and the audio unit.

• When Bluetooth™ audio mode is selected, audio unit outputs sound signal to each speaker.

HANDS-FREE PHONE SYSTEM

• Hands-free communication can be operated by connecting using Bluetooth™ with cellular phone.

• Operation is performed by audio switch or steering switch.

When a call is originated • Spoken voice sound output from the microphone (mic. signal) is input to audio unit. Audio unit outputs to cellular phone with Bluetooth™ communication as a TEL voice signal. Voice sound is then heard at the other side.

When receiving a call
• Voice sound is input to own cellular phone from the other side. TEL voice signal is output to front speaker, and the signal is input to audio unit by establishing Bluetooth™ communication from cellular phone.

ANTI-THEFT SYSTEM (ANTI-THEFT CODE INPUT)

• The audio unit is equipped with the anti-theft system.

• The audio unit operates after authenticating a fixed four-digit anti-theft code.

• After removing the battery of the audio unit, the authentication of the anti-theft code is required. The operating procedure: refer to AV-23, "Work Procedure".

• When the input anti-theft code was not authenticated, anti-theft code input can be done up to 8 attempts, counting the below operation as an attempt.

CAUTION:
• If the attempts exceed 8, “system secure please contact dealer” is displayed and anti-theft code input cannot be performed.

• The number of failed attempts is not reset and accumulated after any authentication.

ANTI-THEFT SYSTEM (NATS AUDIO LINK)

Description
The link with the BCM implies that the audio unit can basically only be operated if connected to the matching BCM to which the audio unit was initially fitted on the production line.

Since radio operation is impossible after the link with the NATS is disrupted, theft of the audio unit is basically useless since special equipment is required to reset the audio unit.

Initialization Process for Audio Units That Are Linked to the BCM New audio units will be delivered to the factories in the “NEW” state, i.e. ready to be linked with the BCM.

When the audio unit in “NEW” state is first switched on at the factory, it will start up communication with the BCM and send a code (the “Audio Unit Code”) to the BCM. The BCM will then store this code, which is unique to each audio unit, in its (permanent) memory.

Upon receipt of the code by the BCM, the NATS will confirm correct receipt of the audio unit code to the audio unit. Hereafter, the audio unit will operate as normal.

During the initialization process, “NEW” is displayed on the audio unit display. Normally though, communication between audio unit and BCM takes such a short time (300 ms) that the audio unit seems to switch on directly without showing “NEW” on its display.

Normal Operation
Each time the audio unit is switched on afterwards, the audio unit code will be verified between the audio unit and the NATS before the audio unit becomes operational. During the code verification process, “WAIT” is shown on the audio unit display. Again, the communication takes such a short time (300 ms) that the audio unit seems to switch on directly without showing “WAIT” on its display.

When The Radio Is Locked In case of the audio unit being linked with the vehicle's NATS (immobilizer system), disconnection of the link between the audio unit and the BCM will cause the audio unit to switch into the lock (“SECURE”) mode in which the audio unit is fully inoperative. Hence, repair of the audio unit is basically impossible, unless the audio unit is reset to the “NEW” state for which special decoding equipment is required.

Clarion has provided their authorized service representatives with so called “decoder boxes” which can bring the audio unit back to the “NEW” state, enabling the audio unit to be switched on after which repair can be performed.

Subsequently, when the repaired audio unit is delivered to the final user again, it will be in the “NEW” state to enable re-linking the audio unit to the vehicle's immobilizer system. As a result of the above, repair of the audio unit can only be done by an authorized Clarion representative (when the owner of the vehicle requests repair and can show personal identification).

Service Procedure