05 identification of noise source 05 nhận dạng nguồn tiếng ồn

GSIC - Global Service Information Center AUDIO AND VISUAL SYSTEM > IDENTIFICATION OF NOISE SOURCE for Preparation Click here Radio Description Radio frequency band Radio broadcasts use the radio frequency bands shown in the table below ● Service area http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm000000nl000hx.html (1 of 4)12/27/2006 11:13:37 AM GSIC - Global Service Information Center The service areas of AM and FM broadcasts are vastly different Sometimes an AM broadcast can be received very clearly but an FM stereo cannot FM stereo has the smallest service area, and is prone to pick up static and other types of interference such as noise ● Radio reception problems HINT: In addition to static, other problems such as "phasing", "multipath", and "fade out" exist These problems are not caused by electrical noise, but by the radio signal propagation method itself Phasing AM broadcasts are susceptible to electrical interference and another kind of interference called phasing Occurring only at night, phasing is the interference created when a vehicle receives radio wave signals from the same transmitter One signal is reflected off the ionosphere and the other signal is received directly from the transmitter Multipath Multipath is a type of interference created when a vehicle receives radio wave signals from the same transmitter One signal is reflected off buildings or mountains and the other signal is received directly from the transmitter http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm000000nl000hx.html (2 of 4)12/27/2006 11:13:37 AM GSIC - Global Service Information Center Fade out Fade out is caused by objects (buildings, mountains, and other large obstacles) that deflect away part of a signal, resulting in a weaker signal when the object is between the transmitter and vehicle High frequency radio waves, such as FM broadcasts, are easily deflected by obstructions Low frequency radio waves, such as AM broadcasts, are much more difficult to deflect Noise problem Technicians must have a clear understanding about each customer's noise complaint Use the following table to diagnose noise problems ● Radio Frequency Noise Occurrence Condition Presumable Cause AM Noise occurs in a specified area Foreign noise AM Noise occurs when listening to an intermittent broadcast An identical program transmitted from multiple towers can cause noise where the signals overlap AM Noise occurs only at night Music beat from a distant broadcast FM Noise occurs while driving in a specified area Multipath or phasing noise resulting from a change in FM frequency HINT: If the noise does not match the examples above, refer to the descriptions about phasing and multipath http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm000000nl000hx.html (3 of 4)12/27/2006 11:13:37 AM GSIC - Global Service Information Center http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm000000nl000hx.html (4 of 4)12/27/2006 11:13:37 AM GSIC - Global Service Information Center AUDIO AND VISUAL SYSTEM > PROBLEM SYMPTOMS TABLE for Preparation Click here HINT: Before inspecting the suspected areas listed in the table below, check the fuse and relay Before inspecting the suspected areas listed in the table below, check the DTCs Methods used to verify the cause of the problem are listed in order of probability in the suspected area column Audio Function: Symptom Pressing power switch does not turn on system Panel switch does not function Suspected area See page "Pressing Power Switch does not Turn on System" Click here Radio receiver power source circuit Click here AVC-LAN circuit Click here Replace radio receiver Click here Steering pad switch circuit Click here AVC-LAN circuit Click here Replace radio receiver Click here Radio receiver power source circuit Click here "No Sound can be Heard from Speakers (Audio is Mute)" Click here Stereo component amplifier power source circuit Click here http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm0000012a8004x.html (1 of 4)12/27/2006 11:14:46 AM GSIC - Global Service Information Center No sound can be heard from speakers (audio is mute) Sound cannot be heard only from front speaker (driver side) (Volume is too low.) (Only with navigation system) Sound quality is bad in all modes (Volume is too low.) Sound signal circuit between radio receiver and stereo component amplifier Click here Speaker circuit Click here Mute signal circuit between radio receiver and stereo component amplifier Click here Mute signal circuit between navigation ECU and stereo component amplifier Click here Replace stereo component amplifier Click here Replace radio receiver Click here Driver side speaker circuit Click here Sound signal circuit between radio receiver and stereo component amplifier Click here Replace stereo component amplifier Click here Replace radio receiver Click here "Poor Sound Quality in All Modes (Low Volume)" Click here Speaker circuit Click here Sound signal circuit between radio receiver and stereo component amplifier Click here Mute signal circuit between radio receiver and stereo component amplifier Click here Mute signal circuit between navigation ECU and stereo component amplifier Click here Replace stereo component amplifier Click here Replace radio receiver Click here http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm0000012a8004x.html (2 of 4)12/27/2006 11:14:46 AM GSIC - Global Service Information Center ASL does not function Sound cannot be heard or sound quality is bad (RSE sound) Vehicle speed signal circuit between stereo component amplifier and combination meter Click here Radio receiver power source circuit Click here Multi-display controller power source circuit Click here Sound signal circuit between radio receiver and multi-display controller Click here Replace radio receiver Click here Replace multi-display controller Click here Abnormal noise occurs Radio broadcast cannot be received (poor reception) "Noise occurs" Click here Replace stereo component amplifier Click here Replace radio receiver Click here "Radio Broadcast cannot be Received (Poor Reception)" Click here Radio receiver power source circuit Click here CD cannot be inserted/ played or CD is ejected right "CD cannot be Inserted/Played after insertion or CD is Ejected Right After Insertion" Click here Radio receiver power source circuit Click here "CD cannot be Ejected" Click here Sound quality is bad only when playing CD (Volume is too low.) "Sound Quality is Bad Only when CD is Played (Volume is Too Low)" Click here CD sound skips "CD Sound Skips" Click here Radio receiver power source circuit Click here "Cassette Tape cannot be Inserted or Played" Click here CD cannot be ejected Cassette tape cannot be inserted or played http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm0000012a8004x.html (3 of 4)12/27/2006 11:14:46 AM GSIC - Global Service Information Center Radio receiver power source circuit Click here "Cassette Tape cannot be Ejected" Click here Sound quality is bad only when playing tape "Sound Quality is Bad Only when Playing Tape" Click here Tape is tangled due to incorrect tape speed or autoreverse malfunction "Tape is Tangled due to Incorrect Tape Speed or AutoReverse Malfunction" Click here Radio receiver cannot be dimmed in night time Dimmer signal circuit Click here Replace radio receiver Click here Radio receiver cannot be illuminated in night time Illumination circuit Click here Replace radio receiver Click here Cassette tape cannot be ejected Steering Pad Switch Function: Symptom Audio system cannot be operated with steering pad switch Suspected area See page Steering pad switch circuit Click here Replace radio receiver Click here http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm0000012a8004x.html (4 of 4)12/27/2006 11:14:46 AM GSIC - Global Service Information Center AUDIO AND VISUAL SYSTEM > TERMINALS OF ECU for Preparation Click here RADIO RECEIVER Symbols (Terminal No.) B (R2-1) - GND (R2-20) Wiring Color L-B - BR Terminal Description Condition Battery Always Light control switch OFF → TAIL ILL+ (R2-2) - GND (R2-20) G - BR Illumination (rheostat) signal ATX+ (R2-5) - GND (R220) P - BR AVC-LAN Turn ignition switch to ACC communication signal MUTE (R2-7) - GND (R220) GR - BR R+ (R2-8) - GND (R2-20) L+ (R2-9) - GND (R2-20) SLD (R2-10) - Body ground B - BR R - BR MUTE signal Sound signal (Right) Sound signal (Left) Shielded - Body Shield ground ground Specification 10 to 14 V Below V → 10 to 14 V to V Audio system is playing → Changing Above 3.5 V → Below V Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output Always Below V 10 to 14 V ACC (R2-11) - GND (R220) GR - BR Accessory (ON) Turn ignition switch to ACC ILL- (R2-12) - GND (R220) W - BR Illumination (rheostat) signal Turn ignition switch off → ON Below V → Pulse generation ANT (R2-13) - GND (R220) O - BR Power source of antenna Radio switch ON and AM or FM 10 to 14 V http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm0000012a7004x.html (1 of 8)12/27/2006 11:18:14 AM GSIC - Global Service Information Center ATX- (R2-15) - GND (R220) R- (R2-18) - GND (R2-20) L- (R2-19) - GND (R2-20) GND (R2-20) - Body ground SWG (R4-6) - GND (R2-20) L - BR W - BR G - BR BR - Body ground R - BR AVC-LAN Turn ignition switch to ACC communication signal to V Audio system is playing A waveform synchronized with sounds is output Sound signal (Left) Audio system is playing A waveform synchronized with sounds is output Ground Always Below V Steering pad switch ground Always Below V Sound signal (Right) V or more → Approx 0.5 V → Approx 0.9 V → Approx 2.0 V → Approx 3.4 V V or more → Below 2.5 V SW1 (R4-7) - GND (R2-20) G - BR Steering pad switch signal Steering pad switch not operated → SEEK+ switch pushed → SEEK- switch pushed → VOL+ switch pushed → VOL- switch pushed SW2 (R4-8) - GND (R2-20) V - BR Steering pad switch signal Steering pad switch not operated → MODE switch pushed TX+ (R4-9) - GND (R2-20) (*2) Y - BR AVC-LAN Turn ignition switch to ACC communication signal to V BR - BR AVC-LAN Turn ignition switch to ACC communication signal to V TX- (R4-10) - GND (R220) (*2) RSLD (R4-14) - Body ground R-R+ (R4-15) - GND (R220) (*2) R-R- (R4-16) - GND (R220) (*2) R-L+ (R4-17) - GND (R220) (*2) Shielded - Body Shield ground ground P - BR LG - BR SB - BR Sound signal to RSE Sound signal to RSE Sound signal to RSE Always Below V Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm0000012a7004x.html (2 of 8)12/27/2006 11:18:14 AM GSIC - Global Service Information Center WF1- (S30-14) - GND (S3016) L-B - W-B Sound signal (Front Right) Audio system is playing A waveform synchronized with sounds is output GND2 (S30-15) - Body ground W-B - Body ground Ground Always Below V GND (S30-16) - Body ground W-B - Body ground Ground Always Below V RL- (S30-17) - GND (S3016) RR- (S30-18) - GND (S3016) FL- (S30-19) - GND (S3016) FR- (S30-20) - GND (S3016) MUTE (S29-1) - GND (S3016) L- (S29-2) - GND (S30-16) Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output Sound signal (Front Right) Audio system is playing A waveform synchronized with sounds is output Mute signal from radio receiver Audio system is playing → Changing Above 3.5 V → Below 3.5 V Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output GR - W-B Sound signal (Rear Left) L - W-B Sound signal (Rear Right) LG (*1) - W-B Sound signal (Front R-Y (*2) - W-B Left) P - W-B GR - W-B G - W-B Sound signal from radio receiver (Left) R - W-B Sound signal from radio receiver (Left) W - W-B Sound signal from radio receiver (Right) R+ (S29-5) - GND (S30-16) B - W-B Sound signal from radio receiver (Right) TX- (S29-7) - GND (S3016) L - W-B AVC-LAN Turn ignition switch to ACC communication signal L+ (S29-3) - GND (S30-16) R- (S29-4) - GND (S30-16) http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm0000012a7004x.html (5 of 8)12/27/2006 11:18:14 AM to V GSIC - Global Service Information Center TX+ (S29-8) - GND (S3016) P - W-B SPD (S29-11) - GND (S3016) SB - W-B ACC (S29-12) - GND (S3016) N-MU (S29-21) - GND (S30-16) (*1) AVC-LAN Turn ignition switch to ACC communication signal Speed signal from combination meter Vehicle is driven P - W-B Accessory (ON) Turn ignition switch to ACC V - W-B Mute signal from navigation ECU Navigation system is changing to V Pulse generation Below V → 10 to 14 V Above 3.5 V → Below V STEREO COMPONENT AMPLIFIER (MARK LEVINSON SYSTEM) *1: With Navigation System *2: Without Navigation System Symbols (Terminal No.) FR+ (S28-1) - GND (S2813) FL+ (S28-2) - GND (S2813) RR+ (S28-3) - GND (S2813) RL+ (S28-4) - GND (S2813) CTF+ (S28-5) - GND (S2813) Wiring Color P - W-B V - W-B Terminal Description Specification Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output Sound signal (Center) Audio system is playing A waveform synchronized with sounds is output Sound signal (Front Right) Sound signal (Front Left) R-Y - W-B Sound signal (Rear Right) R - W-B Sound signal (Rear Left) GR - W-B Condition http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm0000012a7004x.html (6 of 8)12/27/2006 11:18:14 AM GSIC - Global Service Information Center B+ (S28-7) - GND (S28-13) FR- (S28-8) - GND (S2813) FL- (S28-9) - GND (S28-13) RR- (S28-10) - GND (S2813) W - W-B Battery 10 to 14 V Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output Sound signal (Rear Left) Audio system is playing A waveform synchronized with sounds is output L-B - W-B Sound signal (Front Right) W - W-B Sound signal (Front Left) L - W-B Always Sound signal (Rear Right) RL- (S28-11) - GND (S2813) GR - W-B E (S28-12) - Body ground W-B - Body ground Ground Always Below V GND (S28-13) - Body ground W-B - Body ground Ground Always Below V CTF- (S28-14) - GND (S2813) B - W-B Sound signal (Center) Audio system is playing B+ (S28-16) - GND (S2813) W - W-B Battery TFR+ (S27-1) - GND (S2813) TFL+ (S27-2) - GND (S2813) V - W-B Y (*1) - W-B Sound signal (Front BR (*2) - W-B Left) MTX+ (S27-5) - GND (S2813) P - W-B N-MU (S27-9) - GND (S2813) V (*1) - W-B R+ (S27-11) - GND (S2813) Sound signal (Front Right) B - W-B Always Sound signal from radio receiver (Right) 10 to 14 V Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output AVC-LAN Turn ignition switch to ACC communication signal Mute signal from navigation ECU A waveform synchronized with sounds is output to V Audio system is playing → Changing Above 3.5 V → Below V Audio system is playing A waveform synchronized with sounds is output http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm0000012a7004x.html (7 of 8)12/27/2006 11:18:14 AM GSIC - Global Service Information Center L+ (S27-12) - GND (S2813) R - W-B Sound signal from radio receiver (Left) Audio system is playing SPD (S27-13) - GND (S2813) SB - W-B Speed signal from combination meter Vehicle is driven TFR- (S27-14) - GND (S2813) P - W-B Sound signal (Front Right) TFL- (S27-15) - GND (S28- LG (*1) - W-B Sound signal (Front 13) R-Y (*2) - W-B Left) A waveform synchronized with sounds is output Pulse generation Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output MTX- (S27-18) - GND (S28-13) L - W-B AVC-LAN Turn ignition switch to ACC communication signal ACC (S27-20) - GND (S2813) P - W-B Accessory (ON) Turn ignition switch off → ACC or ON 10 to 14 V GR - W-B Mute signal from radio receiver Audio system is playing → Changing Above 3.5 V → Below V W - W-B Sound signal from radio receiver (Right) Audio system is playing A waveform synchronized with sounds is output Audio system is playing A waveform synchronized with sounds is output MUTE (S27-21) - GND (S28-13) R- (S27-23) - GND (S28-13) L- (S27-24) - GND (S28-13) G - W-B Sound signal from radio receiver (Left) GATEWAY ECU (Click here) MULTI-DISPLAY CONTROLLER (Click here) http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm0000012a7004x.html (8 of 8)12/27/2006 11:18:14 AM to V GSIC - Global Service Information Center AUDIO AND VISUAL SYSTEM > PRECAUTION for Preparation Click here NOTICE: When disconnecting the negative (-) battery terminal, initialize the following systems after the terminal is reconnected System Name See procedure Lighting System Click here Sliding Roof Control System (Standard Type) Click here Sliding Roof Control System (Multi-panel Moon Roof Type) Click here Power Window Control System Click here Power Back Door System Click here Back Door Closer System Click here Electrical Back Door Outside Handle System Click here 1.OBSERVE HANDLING AND OPERATIONAL PRECAUTIONS Please explain to the customer that when the negative terminal is disconnected from the battery, the channel information memory of the AM / FM broadcast stations in the radio receiver is cleared If necessary, make a note of the recorded channel information before the negative terminal is disconnected, then reset the information after the negative terminal is reconnected The removal / installation of the radio receiver should be performed after all the cassette tapes and audio CDs are ejected from the radio receiver HINT: If the cassette tapes and the audio CDs cannot be ejected due to the malfunction of the http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm0000012a4003x.html (1 of 2)12/27/2006 11:05:44 AM GSIC - Global Service Information Center radio receiver, not try to drag them out by force Bring the vehicle to the repair plant Fasten the earth bolt securely when the antenna cord is removed or installed HINT: Failing to fasten the earth bolt securely causes noise at the time of radio wave reception Do not touch the cone paper of the speaker http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm0000012a4003x.html (2 of 2)12/27/2006 11:05:44 AM Page of http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0130U/htmlweb/MANUAL.HT 12/27/2006 GSIC - Global Service Information Center AUDIO AND VISUAL SYSTEM > SYSTEM DESCRIPTION for Preparation Click here DISC PLAYER OUTLINE A compact disc player or digital versatile disc player uses a laser pickup to read digital signals recorded on compact discs (CDs) or digital versatile discs (DVDs) By converting the digital signals to analog, music and other things can be played CAUTION: Do not look directly at the laser pickup because the CD/DVD player uses an invisible laser beam Be sure to operate the player only as instructed NOTICE: 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 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 http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm000000nkz00bx.html (1 of 3)12/27/2006 11:11:04 AM GSIC - Global Service Information Center 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 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 provides resistance to make communication possible 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 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 Ω 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 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 AVCLAN Using this code, the component in the diagnostic function can be displayed http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm000000nkz00bx.html (2 of 3)12/27/2006 11:11:04 AM GSIC - Global Service Information Center http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm000000nkz00bx.html (3 of 3)12/27/2006 11:11:04 AM GSIC - Global Service Information Center AUDIO AND VISUAL SYSTEM > HOW TO PROCEED WITH TROUBLESHOOTING for Preparation Click here 1.VEHICLE BROUGHT TO WORKSHOP NEXT 2.INSPECT BATTERY VOLTAGE Standard voltage: 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding NEXT 3.INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN) Using the intelligent tester, check if the Multiplex Communication System (MPX) is functioning normally Result: Result Proceed to http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm000000pmp00cx.html (1 of 5)12/27/2006 11:12:33 AM GSIC - Global Service Information Center MPX DTC is not output A MPX DTC is output B B Go to MULTIPLEX COMMUNICATION SYSTEM A 4.BASIC INSPECTION Turn the ignition switch ON Check whether or not the radio receiver turns on Result: Result Proceed to Radio receiver turns on A Radio receiver does not turn on B B Go to step A http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm000000pmp00cx.html (2 of 5)12/27/2006 11:12:33 AM GSIC - Global Service Information Center 5.CHECK FOR DTC Check for DTCs and note any codes that are output Delete the DTCs Recheck by simulating the operation indicated by the DTC HINT: If the system cannot enter the diagnosis mode, inspect each AVC-LAN communication signal and repair or replace the problem parts Even if the malfunction symptom is not confirmed, check the DTCs This is because the system stores past DTCs Check and clear past DTCs Then check for DTCs Result: Result Proceed to DTC is output again A DTC is not output B B Go to step A 6.DIAGNOSTIC TROUBLE CODE CHART Find the output code on the diagnostic trouble code chart (Click here) NEXT http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm000000pmp00cx.html (3 of 5)12/27/2006 11:12:33 AM GSIC - Global Service Information Center Go to step 7.PROBLEM SYMPTOMS TABLE Refer to the problem symptoms table (Click here) Result: Result Proceed to Fault is not listed in problem symptoms table A Fault is listed in problem symptoms table B B Go to step A 8.OVERALL ANALYSIS AND TROUBLESHOOTING Terminals of ECU (Click here) NEXT 9.ADJUST, REPAIR OR REPLACE http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm000000pmp00cx.html (4 of 5)12/27/2006 11:12:33 AM GSIC - Global Service Information Center NEXT 10.CONFIRMATION TEST NEXT END http://stic-web.bm.toyota.co.jp/SelectCar_d/xmlweb/RM0 TM/rm0130u/repair2/html/contents/rm000000pmp00cx.html (5 of 5)12/27/2006 11:12:33 AM ... difficult to deflect Noise problem Technicians must have a clear understanding about each customer's noise complaint Use the following table to diagnose noise problems ● Radio Frequency Noise Occurrence... Presumable Cause AM Noise occurs in a specified area Foreign noise AM Noise occurs when listening to an intermittent broadcast An identical program transmitted from multiple towers can cause noise where... where the signals overlap AM Noise occurs only at night Music beat from a distant broadcast FM Noise occurs while driving in a specified area Multipath or phasing noise resulting from a change