Theft Deterrent Feature through Technical Information For the MP3/CD Radios (US8, US9)

RADIO/AUDIO SYSTEM DESCRIPTION AND OPERATION

CONTENTS
- Regular Production Options (RPO)
- Features
- Circuit Description
- Component Description
- Customer Tips
- On Board Diagnostics
- Theft Deterrent Feature

RPO OPTIONS
The entertainment system on this vehicle is configured with either a base or uplevel audio system. Both the base and uplevel audio systems contain a radio, antenna, and speakers.

The following shows the Entertainment RPOs that are available for this vehicle:
- (UM7) AM/FM Stereo
- (U1C) AM/FM Stereo CD
- (US8) AM/FM Stereo, CD, MP3, RDS, EQ
- (US9) AM/FM Stereo, 6-Disc CD, MP3, RDS, EQ
- (UX7) Base Four Speaker
- (U79) Uplevel Four Speaker
- (UZ6) Premium Audio
- (U2K) Digital Radio

Radio Features:

RADIO FEATURES

CD Players Features:

CD PLAYER FEATURES

MP3 Features:

MP3 FEATURES

THEFT DETERRENT FEATURE
The U1C, US8, and US9 are equipped with a programmable theft deterrent feature. When the radio has the SEC (armed) mode activated, the radio will enter the LOCK (locked) mode if the power between the battery and the radio is interrupted for more than 20 seconds. While in the locked mode, "LOCK" appears on the radio display and all radio functions are disabled.

When the vehicle is first purchased or the radio is new or remanufactured, the theft deterrent feature is unarmed. If desired, the customer must program a 4-digit code into the radio to activate the theft deterrent feature.

Operating Modes
The theft deterrent feature causes 3 operating modes:
- VULNERABLE (UNARMED) MODE -The radio does not have a 4-digit code stored. If stolen, the radio will operate normally when power is applied.
- SECURE (ARMED) MODE - The radio has a 4-digit code stored. The radio will enter the LOCK (locked) mode if the power between the battery and the radio is interrupted for more than 20 seconds.
- LOCK (LOCKED) MODE - The radio has been removed from power for more than 20 seconds or the wrong four-digit code has been entered while in the SEC (armed) mode.

IMPORTANT: Before performing service on a vehicle, verify the theft deterrent feature is in the VULNERABLE (unarmed) mode. This check is made by the following steps:
1. Turn the ignition ON. Radio OFF.
2. Press and hold preset buttons "1'" and "2" for 5 seconds.
3. If SEC (armed), a 4-digit number will appear on the radio display. This number is NOT the customer's code. Ask the customer to disarm the feature by following the procedure given in the owner's manual. The procedure is the same procedure used for activating the theft deterrent feature.
4. If no number appears, the theft deterrent feature is VULNERABLE (unarmed) and service may be performed.

Activating Theft Deterrent
To arm the theft deterrent feature on the U1C radio, perform the following:
1. Turn the ignition ON. Radio OFF.
2. Press and hold preset buttons 5 and 6, at the same time, for 5 seconds. The radio will display "- - - -".
3. Have the customer select a 4-digit code. Suggest to use a number that is familiar to them.
4. Enter the 4-digit code by using the SEEK/SCAN and TUNE rocker buttons (U1C) or by using the SEEK and AUTO EQ rocker buttons (US8 and US9). The numbers will start at 0000 and will increase on the display each time the corresponding side of the rocker button is pushed.

U1C Radio
1. Press the down arrow side of the SEEK/SCAN rocker button to change the left digit.
2. Press the up arrow side of the SEEK/SCAN rocker button to change the second to left digit.
3. Press the down arrow side of the TUNE rocker button to change the third to left digit.
4. Press the up arrow side of the TUNE rocker button to change the fourth to left digit.

US8 and US9 Radios
1. Press the left arrow side of the SEEK rocker button to change the left digit.
2. Press the right arrow side of the SEEK rocker button to change the second to left digit.
3. Press the left arrow side of the AUTO EQ rocker button to change the third to left digit.
4. Press the right arrow side of the AUTO EQ rocker button to change the fourth to left digit.

5. Push the AM/FM button.
6. The display prompt you to repeat the code, requesting the 4-digit code to be entered again to verify correct entry. Enter the same four-digit code, using the applicable rocker buttons.

U1C Radio
1. Press the down arrow side of the SEEK/SCAN rocker button to change the left digit.
2. Press the up arrow side of the SEEK/SCAN rocker button to change the second to left digit.
3. Press the down arrow side of the TUNE rocker button to change the third to left digit.
4. Press the up arrow side of the TUNE rocker button to change the fourth to left digit.

US8 and US9 Radios
1. Press the left arrow side of the SEEK rocker button to change the left digit.
2. Press the right arrow side of the SEEK rocker button to change the second to left digit.
3. Press the left arrow side of the AUTO EQ rocker button to change the third to left digit.
4. Press the right arrow side of the AUTO EQ rocker button to change the fourth to left digit.

7. Push the AM/FM button to store the code.
8. The display will show "SEC" (U1C) or "SECURITY ON" (US8 and US9) indicating the radio is armed and the radio will return to normal operation.

If the radio displays "Err1", "Err2", or "LOCK", then the radio was already in the secure state and is armed with a different code than the one that was entered. Proceed to the appropriate part of this Theft Deterrent to deactivate the system if deactivation is desired.

Deactivating The Theft Deterrent Feature-radio In "sec" (armed) Mode
To deactivate the theft deterrent feature, enter the customer's code or the factory unlock code using steps 1-7 of the "Activating Theft Deterrent" procedure that applies to the radio. After completing those steps, the display will show no number. This indicates the theft deterrent feature is in the VULNERABLE (unarmed) mode and service may be performed.

When the vehicle is returned to the customer, remind the customer to reactivate the theft deterrent feature using the procedure given in the owner's manual.

Deactivating Theft Deterrent-radio In "lock" Or "- - - -" Mode (Code Known)
When the theft deterrent feature is in the SEC (armed) mode, the radio can enter the locked state if the power is removed for greater than 20 seconds or an incorrect code entry is attempted three times. An error message is displayed after every wrong entry.

When the radio is in the LOCK (locked) mode, "LOCK" is displayed and all radio functions are disabled.

Before another attempt at the correct code can be made, the radio must be ON and the display must show "LOCK" for an hour. After an hour, "- - - -" will be displayed and the correct code may be entered using the following steps.
1. Turn the ignition ON.
2. Press the power button on the radio. The display will show "- - - -".
3. Enter the 4-digit code by using the SEEK/SCAN and TUNE rocker buttons (U1C) or by using the SEEK and AUTO EQ rocker buttons (US8 and US9). The numbers will start at 0000 and will increase on the display each time the corresponding side of the rocker button is pushed.

U1C Radio
1. Press the down arrow side of the SEEK/SCAN rocker button to change the left digit.
2. Press the up arrow side of the SEEK/SCAN rocker button to change the second to left digit.
3. Press the down arrow side of the TUNE rocker button to change the third to left digit.
4. Press the up arrow side of the TUNE rocker button to change the fourth to left digit.

US8 and US9 Radios
1. Press the left arrow side of the SEEK rocker button to change the left digit.
2. Press the right arrow side of the SEEK rocker button to change the second to left digit.
3. Press the left arrow side of the AUTO EQ rocker button to change the third to left digit.
4. Press the right arrow side of the AUTO EQ rocker button to change the fourth to left digit.

4. Press the AM/FM button after entering the 4-digit code. If the incorrect code has been entered, the radio will return to the SEC (armed) mode and normal operation will return. If the wrong code is entered, the display will show an error message and display "- - - -" indicating another attempt at the correct code can be made.

Deactivating Theft Deterrent - Radio In "lock" Or "- - - -" Mode (Code Unknown)
When the theft deterrent feature is armed or secure (SEC), the radio can enter the locked state if the power is removed from the radio for greater than 20 seconds or an incorrect code is attempted 3 times. An error message is displayed after every wrong entry.

When the radio is in the LOCK (locked) mode, "LOCK" is displayed and all radio functions are disabled.

Before another attempt at the correct code can be made, the radio must be ON and the display must show "LOCK" for an hour. After an hour, "- - - -" will be displayed and the correct code may be entered using the following steps:

If the customer code is unknown, perform the following steps to retrieve the customer code:
1. Turn the ignition ON.
2. Turn radio power OFF.
3. Press and hold preset buttons 1 and 2 for 5 seconds. A 4-digit code will be displayed. This number is not the customer's code. Record this number as it is needed before technical support is called.
4. Using a touch tone phone only, call the technical support system at 1-888-225-2306 (USA and Canada). When advised, give the following information:
1. Your retailer code
2. The 4-digit radio display code obtained in step 3
3. In response, you will receive the factory unlock code; record this number

NOTE: The factory unlock code received is the same as the code that was entered by the customer.

5. Turn the ignition ON.
6. Press the radio power button. The display will show "- - - -".
7. Enter the 4-digit code by using the SEEK/SCAN and TUNE rocker buttons (U1C) or by using the SEEK and AUTO EQ rocker buttons (US8 and US9). The numbers will start at 0000 and will increase on the display each time the corresponding side of the rocker button is pushed.

U1C Radio
1. Press the down arrow side of the SEEK/SCAN rocker button to change the left digit.
2. Press the up arrow side of the SEEK/SCAN rocker button to change the second to left digit.
3. Press the down arrow side of the TUNE rocker button to change the third to left digit.
4. Press the up arrow side of the TUNE rocker button to change the fourth to left digit.

US8 and US9 Radios
1. Press the left arrow side of the SEEK rocker button to change the left digit.
2. Press the right arrow side of the SEEK rocker button to change the second to left digit.
3. Press the left arrow side of the AUTO EQ rocker button to change the third to left digit.
4. Press the right arrow side of the AUTO EQ rocker button to change the fourth to left digit.

8. Press the AM/FM button after entering the 4-digit code. If the correct code has been entered, the radio will return to the SEC (armed) mode and normal operation will return. If the wrong code has been entered, the display will show an error message and display "- - - -" indicating another attempt at the correct code can be made.

RADIO DATA SYSTEM (RDS)
The CD/MP3 audio systems are equipped with technology known as the Radio Data System (RDS). The RDS is a system that sends data along with the audio of the FM station you are currently tuned to. The RDS is a standard that defines how a FM broadcast station may send digital data along with the audio program. Think of it as a one-way wireless modem, allowing the broadcaster to send information about the program to your receiver.

RDS Basic Information
- RDS functions are provided in the FM broadcast band only.
- RDS functions will only work with FM broadcast stations that are broadcasting RDS data.
- Not all FM Broadcast stations broadcast RDS data or offer all of the RDS services.
- RDS functions may not work properly when reception is weak, reception is of poor quality, or the FM Broadcaster does not implement RDS properly.

In some cases, a radio station broadcasting incorrect information may cause the RDS features of the radio to appear to work improperly

Displaying RDS Information
The RDS feature is always on. When tuned to a non-RDS station, the radio will display frequency information as you would normally expect. When tuned to an RDS station, the radio can operate as follows:
- The radio will change from displaying the frequency of the FM station to displaying the call letters of the station or display the nickname of the station.
- Display the type of program.
- Display general information such as artist and song title, call in phone numbers, etc.

Viewing And Selecting RDS Information For Display
Press the RCL button once for less than 2 seconds when the radio displays the program service (PS) name and the frequency of the station will be displayed. Press the button again, and the program type (P-Type) will be displayed. Pressed again, and the program type (PTY) name will be displayed, if the broadcaster is broadcasting one. The PTY name is an eight-character name that the broadcaster may use to further identify the type of programming currently being broadcast. Should you decide that Frequency, P-Type or PTY name is more desirable to display when tuned to an RDS station than the PS name, press the RCL button until the desired information is displayed, then press and hold for more than 2 seconds. A beep should be heard and the radio will now display the selected information whenever tuned to an RDS broadcaster. The radio will display frequency for all non-RDS broadcast stations.

Using RDS Program Types To Tune Radio
Listed are several ways on how to tune your radio using RDS program types. The radio will now be configured to tune based on RDS data rather than frequency

Finding a RDS Station By Specific Program Type
1. Press the PROG TYPE or P-TYPE button, the radio will display the current P-Type to search for.
2. Press the CAT rocker button until the desired program type is shown in the display.
3. Press the SEEK button and the radio will now seek the first RDS Broadcaster of the selected P-Type.

If the radio cannot find the desired P-Type, the radio displays NOT FOUND and will return to the last station you were listening to.

Using the INFO Feature
When the INFO icon appears in the radio display, a new text message is available for viewing. These text messages are from the RDS broadcaster to the listening public and may be general information such as artist and song title, call in phone numbers, etc.

How to View the INFO Message
- To view the message when the INFO icon appears, press the INFO button to display the text message. If you do not press the INFO button again, the text message will automatically be displayed 8 characters at a time, 3 seconds between updates.
- To view the text message faster, press the INFO button for less than 1 second to scroll through the message at your own speed.
- The INFO icon disappears as soon as you press the INFO button. The INFO icon will appear when a new different message is received.
- To view the most recent received message, press the INFO icon at any time, even if the icon does not appear in the display.

Controlling The Radio
The user can activate RDS to control the radio by using the data received to do the following:
- Interrupt the playback of your CD for traffic or emergency bulletins
- Search for stations by type of program.
- Set your clock to the time that the RDS broadcast station broadcasts.

Using the RDS Traffic Feature
Some RDS broadcasters may carry traffic information programming to inform you of current traffic conditions in your listening area and is indicated by the TA icon in the radio display. Not all FM broadcasters will use this RDS feature. RDS enables the broadcaster to get this information to you even when you are listening to a tape or compact disc. This feature can be enabled or disabled by the listener. Press the TRAF button to find a station that claims to carry traffic information. You may do this even when playing a cassette tape or compact disc. This action will operate in the background without interrupting the current playback. If the radio is not currently tuned to an RDS traffic station, the radio will immediately seek an RDS traffic station. If the radio finds an RDS traffic station, the "TA" icon will appear on the radio display, as will brackets around the [TA] icon. If the radio cannot find an RDS traffic station after searching through the entire FM band, the radio will display NO TRAFFIC.

Traffic Interrupt Feature
Whenever the TA icon is displayed, the current FM station may also broadcast traffic announcements. Traffic announcements are reports of the current traffic conditions in the listening area of the tuned FM broadcasters.

Your radio can interrupt the playback of a compact disc by use of the traffic interrupt feature. The traffic interrupt feature is enabled when the TRAF icon is displayed.

If the broadcaster sends out a traffic announcement while you are listening to FM or in the playback mode, TRAFFIC will be displayed on the radio and the audio from the broadcaster will be heard. At the conclusion of the traffic announcement, the radio will return to the previous playback mode.

During the time the radio displays TRAFFIC, you can adjust the volume of the traffic announcement. This will be the volume at which all future traffic announcements will be heard until the volume during another traffic announcement is adjusted.

You can also interrupt a traffic announcement interrupt by pressing the TRAF button.

During a national or local emergency, a special program type interrupt message ALERT! is displayed. This special announcement will cancel all other RDS features that are in progress, such as a traffic announcement.

RDS CLOCK Time
Broadcasters can choose to send clock time information in the RDS data. This information can be used to update the clock time on the radio. RDS clock time is broadcasted once a minute. To set the clock using RDS clock data perform the following:
- Press and hold the RCL and RDS buttons together for two or more seconds to update the time.
- The display will show SET RDS TIME after receiving the broadcasted time data.
- If the broadcaster is not broadcasting the time data, the radio will display NO RDS TIME SET and the time remains unchanged.

AM/FM RECEPTION

Radio Signal
The radio signal is sent from a broadcast station and is then received by an antenna. The strength of the signal received depends on the following:
- The power output, or wattage, of the broadcasting station
- The location of the vehicle, or receiver, relative to the broadcast tower.
- Obstacles between the tower and the receiver
- Atmospheric conditions
- Which band, AM or FM, the station is broadcasting
- Type of antenna and the ground plane

AM Reception
The AM band has a lower frequency range than the FM band. These longer wavelengths:
- Bend around obstacles
- Follow the curvature of the earth
- May reflect, or skip, off of the ionosphere

The AM frequencies have longer range due to the ground wave. The ground wave follows the curvature of the earth and is affected by its conductivity. Greater conductivity equates to less signal loss, thus transmission over water is better than over land. The AM band has a range of 80-320 km (50-200 mi).

FM Reception
The shorter wavelengths of the higher frequency FM band:
- Reflect off obstacles
- Are absorbed by the ground
- Penetrate the ionosphere

Broadcasts in the FM band are limited to "line of sight" reception which is typically 40 km (25 mi). Even when out of a direct line of sight, the signal may be reflected into areas that would be in a "shadow" otherwise. Factors which affect the line of sight include:
- Height of the broadcast antenna
- Height of the receiving antenna
- Terrain and buildings in the broadcast path

XM Reception
XM satellite radio provides digital radio reception. The XM signal is broadcast from two satellites and, where necessary, terrestrial repeaters. The high power satellites allow the antenna to receive the XM signal even when foliage and other partial obstructions block the antennas view of the satellite. Terrestrial repeaters are used in dense urban areas. These repeaters will receive the satellite signal and re-broadcast them at much higher power levels in order to ensure reception in areas with densely packed tall buildings.

XM Satellite Radio
XM is a national satellite radio service that offers up to 100 coast to coast channels including music, news, sports, talk and children's programming. XM provides digital quality audio and text information, including song title and artist name. A service fee is required in order to receive the XM service. For more information, contact XM at www.xmradio.com or call 1-800-852-9696.

DIGITAL RADIO RECEIVER
The radio controls communicate with the digital radio receiver via the class 2 communication circuit. The digital radio receiver sends remote radio audio signals to the radio.

VIEWING MESSAGES
Press the DISP or RCL button while in XM mode to view various pieces of information related to the current song or channel. By pressing and releasing the DISP or RCL button, you may view four different categories of information: Artist Name/Feature, Song/Program Title, Channel Category, and other Additional Information that may be broadcast on that channel. Additional Information messages may not always be available. If an Additional Information message is being broadcast on the tuned channel, the INFO icon will appear on the display. Each of the four information types may have multiple pages of text. To reach a category, press and release the DISP or RCL button consecutively until the desired type is displayed. If there are multiple pages of text for the selected information type, the radio will automatically display all the pages for that type at a rate of approximately one page every three seconds before timing out and returning to the default display. You may override this feature by pressing the DISP or RCL button to review all of the pages at your own pace.

XM Advisory Messages:

TECHNICAL INFORMATION FOR THE MP3/CD RADIOS (US8, US9)
The US8 and US9 radios will play both standard audio CDs and CD-Rs or CD-RWs. The CD-R/RWs may contain either standard audio (*.cda) or compressed audio (*.mp3).

Customers who record their own music CD-R/RWs should be aware of the following:
- The files can be recorded on a CD-R/RW disc with a maximum capacity of 700 MB.
- The radio will play only compressed audio files recorded in the *.mp3 format. It also supports playlists that can be made and saved with popular MP3 software (in the *.m3u format). A playlist name must be no more than 32 characters in length. If the name of a playlist is longer than 32 characters, the radio will ignore the playlist.
- The radio will only play audio from a CD-R/RW, it cannot record audio.
- The radio will play a mixed mode CD-R/RW (one recorded with both *.cda and *.mp3 files). If a mixed mode CD is inserted in the radio,, the radio will assign the standard CD audio to a directory which is listed as ROM audio directory.
- The radio supports multi-session discs, but only the files from the last session will be played.
- There are a total of 20 directories (folders) allowed on a disc. The file structure can be 0-4 directories deep (a folder within a folder, within a folder, etc). Anything more than 20 directories will be ignored. Each directory may have up to 99 files contained within it. Files not having the *.mp3 extension will not be played, but still count toward the maximum. Anything more than the first 99 files within a directory will be ignored. A single disc may have up to 254 files and directories. Anything beyond the 254 limit will be ignored.
- MP3 files must be written to a CD-R/RW in one of the following industry-standard formats:
- ISO 9660 Level 1
- ISO 9660 Level 2
- Joliet
- Romeo
- ID3 tag information is displayed by the radio, if available. The ID3 tag information can either be version 1 or 2. The radio will display the file name, song name, artist name, album name, directory name, and playlist name..

If the customer does not follow these guidelines when recording a CD-R/RW, the disc may not play in the US8 or US9 radio.