Contents Wiring diagrams Section: Antenna Systems All sections

Audio / Visual: Other Lexus IS II

Antenna Systems 10 illustrations ~2622 words

PRECAUTION

Note. When disconnecting the negative (-) battery terminal, initialize the following systems after the terminal is reconnected.

System NameSee procedure
Power Window Control SystemINITIALIZATION

SYSTEM NAME

Scheme 202

Scheme 202: PARTS LOCATION

Scheme 203

Scheme 203

Scheme 204

Scheme 204: SYSTEM DIAGRAM

Scheme 205

Scheme 205: SYSTEM DESCRIPTION

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Scheme 206
  1. DISC PLAYER OUTLINE A CD/DVD player uses a laser pickup to read digital signals recorded on CDs or DVDs. By converting the digital signals to analog, music and other content can be played. CAUTION: Do not look directly at the laser pickup because the CD or DVD player uses an invisible laser beam. Be sure to operate the player only as instructed. NOTE: Do not disassemble any part of the CD or DVD player. Do not apply oil to the CD or DVD player. Do not insert anything but a CD or a DVD into the CD or DVD player. Usable discs CD player DVD player Precautions for use of discs NOTE: Copy-protected CDs cannot be played. CD-Rs and CD-RWs may not be played depending on the recording conditions or characteristics of the discs, or due to damage, dirt, or deterioration caused by leaving the discs in the cabin for a long time. Unfinalized CD-Rs and CD-RWs cannot be played. PAL or SECAM color television standard discs cannot be played. (Only NTSC discs can be played.) Dualdiscs that mate DVD recorded material on one side with CD digital audio material on the other cannot be played. Keep the discs away from dirt. Be careful not to damage the discs or leave your fingerprints on them. Hold discs by the outer edge and center hole with the label side up. Leaving the disc exposed halfway out of the slot for a long time after pressing the disc eject button may cause deformation of the disc, making the disc unusable. If discs have adhesive tape, stickers, CDR labels, or any traces of such labels attached, the discs may not be ejected or player malfunctions may result. Keep the discs away from direct sunlight. (Exposure to direct sunlight may cause deformation of the disc, making the disc unusable.) Do not use odd-shaped CDs because these may cause player malfunctions. Do not use discs whose recording portion is transparent or translucent because they may not be inserted, ejected, or played normally. HINT: When it is cold or it is raining, if the windows mist up, mist and also dew may form in the player. In such a case, the CD may skip or the CD may stop in the middle of play. Ventilate or dehumidify the cabin for a while before using the player. The CD may skip if the player experiences strong vibrations when the vehicle is driven on rough road or similar uneven surface(s). Cleaning NOTE: Do not use a lens cleaner because it may cause a malfunction in the pickup portion of the player.

Scheme 207

Scheme 207

Scheme 208

Scheme 208
  1. If dirt is on the disc surface, wipe it clean with a soft dry cloth such as an eyeglass cleaner for plastic lenses from the inside to the outside in a radial direction. (Scheme 207): Checking Disc NOTE: Pressing on the disc by hand or rubbing the disc with a hard cloth may scratch the disc surface. Use of solvent such as a record spray, antistatic agent, alcohol, benzine, and thinner, or a chemical cloth may cause damage to the disc, making the disc unusable.
  2. MP3/WMA OUTLINE Playable MP3 file standards MP3/WMA OUTLINE REFERENCE Compatible standard MP3 (MPEG1 LAYER3, MPEG2 LSF LAYER 3) Compatible sampling frequency MPEG1 LAYER3: 32, 44.1, 48 (kHz) MPEG2 LSF LAYER3: 36, 22.05, 24 (kHz) Compatible bit rate MPEG1 LAYER3: 64, 80, 96, 112, 128, 160, 192, 224, 256, 320 (kbps) MPEG2 LSF LAYER3: 64, 80, 96, 112, 128, 144, 160 (kbps) Compatible with VBR Compatible channel mode Stereo, joint stereo, dual channel, monaural Playable WMA file standards PLAYABLE WMA FILE STANDARDS REFERENCE Compatible standard WMA Ver. 7, 8, and 9 Compatible sampling frequency 32, 44.1, 48 (kHz) Compatible bit rate Ver. 7, 8: CBR48, 64, 80, 96,128,160,192 (kbps) Ver. 9: CBR48, 64, 80, 96, 128,160,192, 256, 320 (kbps) Compatible with playback of channel 2 only ID3 tag and WMA tag Additional textual information called ID3 tag can be input to MP3 files. Information such as song titles and artist names can be stored. HINT: This player is compatible with the ID3 tags of ID3 Ver. 1.0 and 1.1, and ID3 Ver. 2.2 and 2.3. (Number of characters complies with ID3 Ver. 1.0 and 1.1.) Additional textual information called WMA tag can be input to WMA files. Information such as song titles and artist names can be stored. Usable media Only CD-ROMs, CD-Rs (CD-Recordable), and CD-RWs (CD-ReWritable) only can be used to play MP3/WMA files. NOTE: CD-Rs and CD-RWs are more easily affected by a hot and humid environment than discs used for normal audio CDs. For this reason, some CD-Rs and CD-RWs may not be played. If there are fingerprints or scratches on the disc, the disc may not be played or the CD may skip. Some CD-Rs and CD-RWs deteriorate if they are left in the cabin for a long time. Keep CD-Rs and CD-RWs in a storage case that is impenetrable to light. Usable media format Usable media format USABLE MEDIA FORMAT REFERENCE Disc format CD-ROM Mode 1, CD-ROM XA Mode 2 Form1 File format ISO9660 Level 1 and Level 2 (joliet) HINT: As for MP3/WMA files written in any format other than those above, the contents of the files may not be played normally or the file names or folder names may not be displayed correctly. This player is compatible with multi-session discs and can play CD-Rs and CD-RWs on which MP3/WMA files are added. However, only the first session can be played. Discs whose first session includes both music data and MP3 or WMA format data cannot be played. Standard and restrictions STANDARD AND RESTRICTIONS REFERENCE Maximum directory levels 8 levels Maximum number of characters for a folder name/file name 32 characters Maximum number of folders 192 (Including empty folders, route folders, and folders that do not contain MP3/WMA files) Maximum number of files in a disc 255 (Including non-MP3/WMA files) File names Only files with an extension of ".mp3" or ".wma" can be recognized and played as MP3 or WMA files. Save MP3 or WMA files with an extension of ".mp3" or ".wma ". NOTE: If saving non-MP3 or non-WMA files with an extension of ".mp3" or ".wma ", those files are wrongly recognized as MP3 or WMA files and played. A loud noise may occur and damage to the speaker may result.
  3. AVC-LAN DESCRIPTION What is AVC-LAN? AVC-LAN, an abbreviation for "Audio Visual Communication Local Area Network ", is a united standard developed by the manufacturers in affiliation with Toyota Motor Corporation. This standard pertains to audio and visual signals as well as switch and communication signals, Purpose: Recently, car audio systems have rapidly developed and the functions have vastly changed. The conventional car audio system is being integrated with multi-media interfaces similar to those in navigation systems. At the same time, customers are demanding higher quality from their audio systems. This is merely an overview of the standardization background. The specific purposes are as follows: To solve sound problems, etc. caused by using components of different manufacturers through signal standardization. To allow each manufacturer to concentrate on developing products they do best. From this, reasonably priced products can be produced. HINT: If a short to +B or short to ground is detected in the AVC-LAN circuit, communication is interrupted and the audio system will stop functioning. If an audio system is equipped with a navigation system, the multi-display unit acts as the master unit. If the navigation system is not equipped, the audio head unit acts as the master unit instead. If the radio and navigation assembly is equipped, it is the master unit. The radio receiver contains a resistor that is necessary to enable communication on the different AVC-LAN circuits. The car audio system with an AVC-LAN circuit has a diagnostic function. Each component has a specified number (3-digit) called a physical address. Each function has a number (2-digit) called a logical address.
  4. COMMUNICATION SYSTEM OUTLINE Components of the audio system communicate with each other via the AVC-LAN. The master component of the AVC-LAN is a radio receiver with a 60 to 80 ohms resistor. This is essential for communication. If a short circuit or open circuit occurs in the AVC-LAN circuit, communication is interrupted and the audio system will stop functioning.
  5. DIAGNOSTIC FUNCTION OUTLINE The audio system has a diagnostic function (the result is indicated on the master unit). A 3-digit hexadecimal component code (physical address) is allocated to each component on the AVC-LAN. Using this code, the component in the diagnostic function can be displayed.

Pressing Power Switch does not Turn on System

  1. CHECK VEHICLE CONDITION Check that conditions in the cabin are not likely to cause condensation. HINT: This problem occurs when the cabin is humid and the temperature changes rapidly. This may produce condensation, resulting in a short circuit. OK: Condensation is not likely to be produced. NG: DRY OUT CABIN AND RECHECK CONDITION OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

No Sound can be Heard from Speakers

  1. CHECK RADIO RECEIVER Check radio receiver setting. Check that the volume is not set to "0 ". Check that "MUTE" is off. OK: The volume is not set to "0" and "MUTE" is off. OK: END NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

Sound Quality is Bad Only when CD is Played (Volume is Too Low)

  1. REPLACE CD WITH ANOTHER AND RECHECK Replace the CD with another one and recheck. Check if the problem recurs using another CD. OK: Malfunction disappears. NG: REPLACE RADIO RECEIVER OK: END

CD cannot be Ejected

  1. PRESS "EJECT" AND CHECK OPERATION Press the CD EJECT switch of the radio receiver for 2 seconds or more and check that the CD is ejected. OK: CD is ejected. NG: REPLACE RADIO RECEIVER OK: Go to next step.
  2. REPLACE CD WITH ANOTHER AND RECHECK Insert another CD and check if it is ejected. OK: CD is ejected. NG: REPLACE RADIO RECEIVER OK: END

CD cannot be Inserted/Played or CD is Ejected Right After Insertion

  1. CHECK IF A PROPER CD IS INSERTED Make sure that the CD is an audio CD or a CD with an MP3 or WMA file, and that it is not deformed, flawed, stained, burred, or otherwise defective. OK: Normal CD. HINT: Translucent or uniquely-shaped CDs cannot be played. CDs with adhesive paper labels should not be played. Commercial audio CDs can be played. CD-DA files on CD-ROMs, CD-Rs, and CD-RWs can be played. MP3 and WMA files on CD-ROMs, CD-Rs, and CD-RWs can be played. For details on playable CDs, refer to the Owner's Manual. NG: CHANGE DISC OK: Go to next step.
  2. CHECK THAT CD IS INSERTED PROPERLY Check whether or not the CD is inserted upside down. OK: CD is properly inserted. NG: INSERT CD PROPERLY OK: Go to next step.
  3. CHECK CD Clean the disc by wiping it with a soft cloth from the inside to the outside in a radial direction. OK: Malfunction disappears. NOTE: Do not use a conventional record cleaner or antistatic preservative. NG: Go to step 4 OK: END
  4. REPLACE CD WITH ANOTHER AND RECHECK Replace the CD with a normal one and check that the malfunction disappears. OK: Malfunction disappears. NG: REPLACE RADIO RECEIVER END OK: END

CD Sound Skips

  1. CHECK CD Check the CD. OK: The CD is clean. HINT: If dirt is on the CD surface, wipe it clean with a soft cloth from the inside to the outside in a radial direction. NOTE: Do not use a conventional record cleaner or antistatic preservative. NG: CLEAN CD OK: Go to next step.
  2. CHECK CD Check that the CD is not deformed or cracked. OK: No deformation or cracks on the CD. NG: CHANGE DISC OK: Go to next step.
  3. CHECK OPERATION USING ANOTHER CD Check using another CD. Check if the problem recurs using another CD. OK: The problem does not occur. OK: END NG: Go to next step.
  4. CHECK RADIO RECEIVER Check the radio receiver installation condition. Check that the radio receiver is properly installed. OK: Radio receiver is properly installed. NG: REINSTALL RADIO RECEIVER PROPERLY OK: REPLACE RADIO RECEIVER

Scheme 209

Scheme 209: Radio Broadcast cannot be Received or Poor Reception

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Scheme 211
  1. CHECK RADIO RECEIVER Check the radio's automatic station search function. Move the vehicle to a location where radio wave reception is possible. Check the radio's automatic station search function by activating it. OK: The radio's automatic station search function works properly. OK: REPLACE RADIO RECEIVER NG: Go to next step.
  2. INSPECT RADIO RECEIVER Disconnect the radio receiver connector J66. Measure the voltage according to the value(s) in the table below. Standard voltage TESTER CONNECTION AND SPECIFIED CONDITION CHART Tester connection Condition Specified condition ANT - Body ground Engine SW on (IG), Radio SW ON 10 to 14 V NG: REPLACE RADIO RECEIVER OK: Go to next step.
  3. CHECK OPTIONAL COMPONENTS Check optional components (sun-shade film, telephone antenna, etc.). Check if any optional components, such as sunshade film or telephone antenna that may decrease reception capacity, are installed. OK: Optional components are installed. NOTE: Do not remove any optional components installed by the customer without his or her consent. OK: REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE) NG: Go to next step.
  4. CHECK RADIO RECEIVER Preparation for check Remove the antenna plug from the radio receiver. Check for noise Turn the engine switch on (ACC) with the radio receiver connector connected. Turn the radio on and put into AM mode. Place a screwdriver, thin wire, or other metal object on the radio receiver's antenna jack and check that noise can be heard from the speaker. OK: Noise occurs. NG: REPLACE RADIO RECEIVER OK: Go to next step.
  5. CHECK GLASS ANTENNA Check for continuity of the antenna. HINT: Check for continuity at the center of each antenna wire as shown in the illustration. NOTE: When cleaning the glass, wipe it in the direction of the wire with a soft dry cloth. Take care not to damage the wire. Do not use detergents or glass cleaners with abrasive ingredients. When measuring voltage, wrap a piece of tin foil around the tip of the negative probe and press the foil against the wire with your finger, as shown in the illustration. OK: There is continuity in the antenna. NG: REPAIR GLASS ANTENNA OK: Go to next step.
  6. CHECK ANTENNA CORD Remove the antenna plug of the radio receiver and antenna. Measure the resistance between the antenna cord's inner conductor and radio receiver to check for an open circuit in the antenna cord. Standard resistance: Below 1 ohms Measure the resistance between the antenna cord's inner conductor and body ground to check for a short circuit in the antenna cord. Standard resistance: 10 kohms or higher NG: REPLACE ANTENNA CORD OK: Go to next step.
  7. REPLACE AMPLIFIER ANTENNA Replace the amplifier antenna and check if radio broadcasts can be received normally. OK: Radio broadcasts can be received. OK: END NG: REPLACE RADIO RECEIVER

Poor Sound Quality in All Modes (Low Volume)

  1. CHECK AUDIO SETTINGS Set "BASS ", "MID ", and "TREB" to the initial values and check that sound is normal. OK: Malfunction disappears. OK: END NG: Go to next step.
  2. COMPARE WITH ANOTHER VEHICLE OF SAME MODEL Compare with another vehicle of the same model. Compare with another vehicle of the same model which does not have trouble to see if there is any difference in the sound quality. OK: No difference is found. OK: END NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE