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Section 538 (Audio System): Troubleshooting

WARNING: This page is about a different car, the 2004 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
  1. DIAGNOSIS FUNCTION 
    1. Diagnosis start-up

      For shifting to diagnosis mode, turn the ignition switch ON and push the "DISC" switch 3 times while pressing "ch1" and "ch6" switches.

      HINT:

      To exit the diagnosis mode, push the "DISC" switch for 1.7 sec. or turn the ignition switch to ACC or OFF.

    2. Element check mode

      After the diagnosis start-up, the system enters the element check mode. Check that the all elements come on.

      HINT:

      By pressing the "TUNE UP" switch, the system enters the "Service Check Mode".

    3. Switch check mode
      1. Element check mode is started at the same time with the switch check mode.
      2. Check that there is a beep sound when any switch is pressed.

      HINT:

      By pressing "TUNE UP" switch, the system enters the "Service Check Mode".

      Fig 1: Identifying Radio Front Panel
      G03486008Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Service check mode
      1. After the element check and the switch check are completed, the system enters service check mode when "TUNE UP" switch is pressed.
      2. Error codes over the tuner and connected equipments are displayed on the screen of the tuner. Results for each check are displayed as follows:
        • good:

          No DTC is detected for both "System Check Confirmation" and "Diagnosis Memory Response".

        • nCon:

          The component does not respond to the "Diagnosis On Instruction" command.

          Applicable to only the system where connected components are limited to be used.

        • ECHn:

          Application of new version is confirmed by the "Diagnosis On Check", and there is one or more DTC which indicates "Replacement" in the "System Check Result Response" or "Diagnosis Memory Response".

        • CHEC:

          Application of new version is confirmed by the "Diagnosis On Check", and there is no DTC which indicates "Replacement" in the "System Check Result Response" or "Diagnosis Memory Response", but one or more DTC which indicates "Check" is identified.

        • Old:

          Application of old version is confirmed by the "Diagnosis On Check", and DTC is identified in the "System Check Result Response" or "Diagnosis Memory Response".

        • nrES:

          No response is identified to the "System Check Start Instruction" and "Request for System Check Result" commands.

      HINT:

      • Check the present and past condition of components by performing the System Check and collecting stored DTC memories.
      • Check results are displayed as one of the following six indications: "good", "ECHn", "CHEC", "nCon", "Old" or "nrES".
        Fig 2: Checking Present & Past Condition Of Components
        G03486009Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Display Screen for Service Check.

      Example: 

      Connection parts (physical address): Radio receiver (P190), RSA ECU (P1F4), DVD player (P1A0)

      Fig 3: Displaying Screen For Service
      G03486010Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. "ECHn" Detail Display Mode Screen
      Fig 4: Identifying ECHN Detail Display Mode Screen
      G03486011Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. "CHEC" Detail Display Mode Screen
      Fig 5: Checking Detail Display Mode Screen
      G03486012Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. "Old" Detail Display Mode Screen
      Fig 6: Identifying Old Detail Display Mode Screen
      G03486013Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. DIAGNOSIS FUNCTION (Sub AVC-LAN) 

    HINT:

    As starting Main AVC-LAN to operate the diagnosis mode, Sub AVC-LAN is also automatically enter the diagnosis mode. Perform the diagnosis mode operation on the RSA panel.

    1. Element check mode

      After the diagnosis start-up, the system enters the element check mode. Check that the all elements come on.

      HINT:

      By pressing the "TUNE UP" switch, the system enters the "Service Check Mode".

    2. Switch check mode
      1. Element check mode is started at the same time with the switch check mode.
      2. Check that there is a beep sound when any switch is pressed.

      HINT:

      By pressing "TUNE UP" switch, the system enters the "Service Check Mode".

      Fig 7: Identifying Audio Front Panel
      G03486014Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Service check mode
      1. After the element check and switch check are completed, the system enters service check mode when "TUNE UP" switch is pressed.
      2. Error codes over the tuner and connected equipments are displayed on the screen of the tuner. Results for each check are displayed as follows:
        • good:

          No DTC is detected for both "System Check Confirmation" and "Diagnosis Memory Response".

        • nCon:

          The component does not respond to the "Diagnosis On Instruction" command.

          Applicable to only the system where connected components are limited to be used.

        • ECHn:

          Application of new version is confirmed by the "Diagnosis On Check", and there is one or more DTC which indicates "Replacement" in the "System Check Result Response" or "Diagnosis Memory Response".

        • CHEC:

          Application of new version is confirmed by the "Diagnosis On Check", and there is no DTC which indicates "Replacement" in the "System Check Result Response" or "Diagnosis Memory Response", but one or more DTC which indicates "Check" is identified.

        • Old:

          Application of old version is confirmed by the "Diagnosis On Check", and DTC is identified in the "System Check Result Response" or "Diagnosis Memory Response".

        • nrES:

          No response is identified to the "System Check Start Instruction" and "Request for System Check Result" commands.

        HINT:

        • Check the present and past condition of components by performing the System Check and collecting stored DTC memories.
        • Check results are displayed as one of the following six indications: "good", "ECHn", "CHEC", "nCon", "Old" or "nrES".
        Fig 8: Identifying Disc/Ch/Prog/Switch
        G03486015Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Display Screen for Service Check.

      Example: 

      Connection parts ( physical address): Radio receiver (P190), RSA ECU (P1F4), DVD player (P1A0)

      Fig 9: Displaying Screen For Service Chart
      G03486016Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. "ECHn" Detail Display Mode Screen
      Fig 10: Identifying ECHN Detail Display Mode Screen
      G03486017Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. "CHEC" Detail Display Mode Screen
      Fig 11: Check Detail Display Mode Screen Flow Chart
      G03486018Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. "Old" Detail Display Mode Screen
      Fig 12: Identifying Old Detail Display Mode Screen Flow Chart
      G03486019Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. DIAGNOSIS CODE LIST 

    w/ Navigation system (See DIAGNOSTIC TROUBLE CODE TABLE )

    Physical address: 190 Radio receiver assembly

    HINT:

    *1: Even if no failure is detected, it may be stored depending on the battery condition or voltage for starting an engine.

    DIAGNOSIS CODE LIST

    Logical address DTC Diagnosis item Diagnosis content Countermeasure and inspected parts
    01 (Communication Control) 21 ROM Error Error is detected in internal ROM. Replace radio receiver assembly.
    01 (Communication Control) 22 RAM Error Error is detected in internal RAM. Replace radio receiver assembly.
    01 (1) (Communication Control) D6 Absence of Master Component in which this code is recorded Has been disconnected from system with ignition in ACC or ON. Or, when this code was recorded, radio receiver assembly was disconnected.
    • Check harness for power supply system of radio receiver assembly.
    • Check harness for communication system of radio receiver assembly.
    01 (2) (Communication Control) D8 No Response to Connection Check Component shown by auxiliary code is or had been disconnected from system after engine start.
    • Check harness for power supply system of component shown by auxiliary code.
    • Check harness for communication system of component shown by auxiliary code.
    01 (1) (Communication Control) D9 Last Mode Error Component operated (sounds and/or images were provided) before engine stop is or has been disconnected with ignition switch in ACC or ON.
    • Check harness for power supply system of component shown by auxiliary code.
    • Check harness for communication system of component shown by auxiliary code.
    01 (Communication Control) DA No Response to ON/OFF Instruction No response is identified when changing mode (audio and visual mode change). Detected when sound and picture cannot be changed by button operation.
    • Check harness for power supply of component shown by auxiliary code.
    • Check harness for communication system of component shown by auxiliary code.
    • If error occurs again, replace component shown by auxiliary code.
    01 (1) (Communication Control) DB Mode Status Error Dual alarm is detected.
    • Check harness for power supply of component shown by auxiliary code.
    • Check harness for communication system of component shown by auxiliary code.
    01 (3) ) (Communication Control) DC Transmission Error Transmission to component shown by auxiliary code has been failed. (Detecting this DTC does not necessary mean actual failure.)
    • If same auxiliary code is recorded in other component, check harness for power supply and communication system of components shown by sub code.
    01 (2) (Communication Control) DD Master Reset (Momentary Interruption) After engine is started, radio receiver assembly was disconnected from system.
    • If this error occurs frequently, replace radio receiver assembly.
    01(2) (Communication Control) DE Slave Reset (Momentary Interruption) After engine is started, slave component was disconnected from system.
    • Check harness for power supply of component shown by auxiliary code.
    • Check harness for communication system of component shown by auxiliary code.
    01 (3) (Communication Control) DF Master Error Due to defective condition of radio receiver assembly, master function is switched to audio equipment. Error occurs in communication between sub-master (audio) and radio receiver assembly.
    • Check harness for power supply of radio receiver assembly.
    • Check harness for communication system of radio receiver assembly.
    • Check harness for communication system between radio receiver assembly and sub-master component.
    01 (Communication Control) E0 Registration Completion Instruction Error "Registration Completion Instruction" command from radio receiver assembly cannot be received.
    • Since this DTC is provided for engineering purpose, it may be detected when no actual failure exists.
    01 (1) (Communication Control) E1 Audio processor ON error While source equipment is operating, AMP output is stopped.
    • Check harness for power supply of radio receiver assembly.
    • Check harness for communication system of radio receiver assembly.
    01 (Communication Control) E2 ON/OFF Instruction Parameter Error Error occurs in ON/OFF controlling command from radio receiver assembly.
    • Replace radio receiver assembly
    01 (Communication Control) E3 Registration Request Transmission Registration Request command is output from slave component. Receiving Connection Check Instruction, Registration Request command is output from sub-master component.
    • Since this DTC is provided for engineering purpose, it may be detected when no actual failure exists.
    01 (Communication Control) E4 Plural Frame Abort Plural frame transmission is aborted.
    • Since this DTC is provided for engineering purpose, it may be detected when no actual failure exists.
    60 (Radio receiver assembly) 43 AM Tuner Error Abnormal condition is detected in AM tuner.
    Inspect radio receiver assembly.    		 Replace radio receiver assembly.
    60 (Radio receiver assembly) 44 FM Tuner Error Abnormal condition is detected in FM tuner. Replace radio receiver assembly.
    61 (Cassette switch) 40 Mechanical or Media Error Malfunction due to mechanical failure is identified or cassette tape is cut or entangled. Inspect cassette tape.
    61 (Cassette switch) 41 EJECT Malfunction Malfunction due to mechanical failure. Replace radio receiver assembly.
    63 (In-dash CD auto changer) 42 No Disc Readout Disc cannot be read. Inspect CD.
    63 (In-dash CD auto changer) 44 CD Error Error is detected in CD auto changer. Replace radio receiver assembly.
    63 (In-dash CD auto Changer) 45 EJECT Error CD cannot be ejected. Replace radio receiver assembly.
    63 (In-dash CD auto Changer) 47 CD High Temp. High temperature is detected in CD auto changer. Replace radio receiver assembly.
    63 (In-dash CD auto Changer) 48 CD Excess Current Excess current is applied to CD auto changer. Replace radio receiver assembly.
    (1) It may be stored when the engine key is turned (again) (1 min.) after engine start.
    (2) It may be stored when the engine key is turned again after engine start.
    (3) When 210 sec. passed after pulling out the power supply connector of the master component with the ignition switch in ACC or ON, this code is stored.

    Physical address: 440 Stereo component amplifier

    HINT:

    DTC TABLE

    Logical address DTC Diagnosis item Diagnosis content Countermeasure and inspected parts
    01 (Communication Control) 21 ROM Error Abnormal condition of ROM is detected. Replace stereo component amplifier.
    01 (Communication Control) 22 RAM Error Abnormal condition of RAM is detected. Replace stereo component amplifier.
    01 (Communication Control) D6 (1) Absence of Master Component in which this code is recorded has been disconnected from system with ignition in ACC or ON. Or, when this code was recorded, radio receiver assembly was disconnected.
    • Check harness for power supply of radio receiver assembly.
    • Check harness for communication system of radio receiver assembly.
    • Check harness for power supply of stereo component amplifier.
    • Check harness for communication system of stereo component amplifier.
    01 *6 (Communication Control) D7 Connection Check Error Component in which this code is recorded has been disconnected from system after engine start. Or, when this code was recorded, radio receiver assembly was disconnected.
    • Check harness for power supply of radio receiver assembly.
    • Check harness for communication system of radio receiver assembly.
    • Check harness for power supply of stereo component amplifier.
    • Check harness for communication system of stereo component amplifier.
    01 (Communication Control) DC (2) Transmission Error Transmission to component shown by auxiliary code has bee failed. (This code does not necessarily mean actual failure.) If same auxiliary code is recorded in other component(s), check harness for power supply and communication system of components shown by sub code.
    01 (Communication Control) DD (3) Master Reset (Momentary Interruption) After engine is started, radio receiver assembly was disconnected from system.
    • Check harness for power supply of radio receiver assembly.
    • Check harness for communication system of radio receiver assembly.
    • If error occurs frequently, replace radio receiver assembly.
    01 (Communication Control) ) DF (4) Master Error Due to defective condition of component with a display, master function is switched to audio equipment. Error occurs in communication between sub-master (audio) and master component.
    • Check harness for power supply of radio receiver assembly.
    • Check harness for communication system of radio receiver assembly.
    • Check harness for communication system between radio receiver assembly and sub-master component.
    01 (Communication Control) E0 (1) Registration Completion Instruction Error "Registration Completion Instruction" command from radio receiver assembly cannot be received. Since this DTC is provided for engineering, it may be detected when no actual failure exists.
    01 (Communication Control) E1 (1) Audio processor ON error While source equipment is operating, AMP output is stopped.
    • Check harness for power supply of radio receiver assembly
    • Check harness for communication system of radio receiver assembly.
    01 (Communication Control) E2 ON/OFF Instruction Parameter Error Error is detected in ON/OFF control command from radio receiver assembly. Replace radio receiver assembly.
    01 (Communication Control) E3 Registration Request Transmission
    • Registration Request command is output from slave component.
    • By reception of connection check Instruction, Registration Request command is output from sub-master component.
    		 Since this DTC is provided for engineering, it may be detected when no actual failure exists.
    01 (Communication Control) E4 Plural Frame Abort Plural frame transmission is aborted. Since this DTC is provided for engineering purpose, it may be detected when no actual failure exists.
    (1) Even if no failure is detected, it may be stored depending on the battery condition or voltage for starting an engine.
    (2) It may be stored when the engine key is turned (again) (1 min.) after engine start.
    (3) It may be stored when the engine key is turned again after engine start.
    (4) When 210 sec. has passed after pulling out the power supply connector of the master component with the ignition switch in ACC or ON, this code is stored.

    Physical address: 1F4 RSA Panel (Main AVC-LAN)

    HINT:

    DTC TABLE

    Logical address DTC Diagnosis item Diagnosis content Countermeasure and inspected parts
    01 (Communication Control) D6 (1) Absence of Master Component in which this code is recorded has been disconnected from system with ignition in ACC or ON. Or, when this code was recorded, radio receiver assembly was disconnected.
    • Check harness for power supply of radio receiver assembly.
    • Check harness for communication system of radio receiver assembly.
    • Check harness for power supply of RSA panel.
    • Check harness for communication system of RSA panel.
    01*6 (Communication Control) D7 Connection Check Error Component in which this code is recorded has been disconnected from system after engine start. Or, when this code was recorded, radio receiver assembly was disconnected.
    • Check harness for power supply of radio receiver assembly.
    • Check harness for communication system of radio receiver assembly.
    • Check harness for power supply of RSA panel.
    • Check harness for communication system of RSA panel.
    01 (Communication Control) DC (2) Transmission Error Transmission to component shown by auxiliary code has bee failed. (This code does not necessarily mean actual failure.) If same auxiliary code is recorded in other component(s), check harness for power supply and communication system of components shown by sub code.
    01 (Communication Control) DD (3) Master Reset (Momentary Interruption) After engine is started, radio receiver assembly was disconnected from system.
    • Check harness for power supply of radio receiver assembly.
    • Check harness for communication system of radio receiver assembly.
    • If error occurs frequently, replace radio receiver assembly.
    01 (Communication Control) DF (4) Master Error Due to defective condition of component with a display, master function is switched to audio equipment. Error occurs in communication between sub-master (audio) and master component.
    • Check harness for power supply of radio receiver assembly.
    • Check harness for communication system of radio receiver assembly.
    • Check harness for communication system between radio receiver assembly and sub-master component.
    01 (Communication Control) E0 (1) Registration Completion Instruction Error "Registration Completion Instruction" command from radio receiver assembly cannot be received. Since this DTC is provided for engineering, it may be detected when no actual failure exists.
    01 (Communication Control) E3 Registration Request Transmission
    • Registration Request command is output from slave component.
    • By reception of connection check Instruction, Registration Request command is output from sub-master component.
    		 Since this DTC is provided for engineering, it may be detected when no actual failure exists.
    01 (Communication Control) E4 Plural Frame Abort Plural frame transmission is aborted. Since this DTC is provided for engineering purpose, it may be detected when no actual failure exists.
    (1) Even if no failure is detected, it may be stored depending on the battery condition or voltage for starting an engine.
    (2) It may be stored when the engine key is turned (again) (1 min.) after engine start.
    (3) It may be stored when the engine key is turned again after engine start.
    (4) When 210 sec. has passed after pulling out the power supply connector of the master component with the ignition switch in ACC or ON, this code is stored.

    Physical address: 16A, 16C RSA Panel (Sub AVC-LAN)

    HINT:

    *1: Even if no failure is detected, it may be stored depending on the battery condition or voltage for starting an engine.

    DTC TABLE

    Logical address DTC Diagnosis item Diagnosis content Countermeasure and inspected parts
    01 (2) (Communication Control) D8 No Response to Connection Check Component shown by auxiliary code is or had been disconnected from system after engine start. D9
    • Check harness for power supply system of component shown by auxiliary code.
    • Check harness for communication system of component shown by auxiliary code.
    01 (1) (Communication Control) D9 Last Mode Error Component operated (sounds and/or images were provided) before engine stop is or has been disconnected with ignition switch in ACC or ON.
    • Check harness for power supply system of component shown by auxiliary code.
    • Check harness for communication system of component shown by auxiliary code.
    01 (Communication Control) DA No Response to ON/OFF Instruction No response is identified when changing mode (audio and visual mode change). Detected when sound and picture cannot be changed change by button operation.
    • Check harness for power supply of component shown by auxiliary code.
    • Check harness for communication system of component shown by auxiliary code.
    • If error occurs again, replace component shown by auxiliary code.
    01 (1) (Communication Control) DB Mode Status Error Dual alarm is detected.
    • Check harness for power supply of component shown by auxiliary code.
    • Check harness for communication system of component shown by auxiliary code.
    01 (3) (Communication Control) DC Transmission Error Transmission to component shown by auxiliary code has been failed. (Detecting this DTC does not necessary mean actual failure.)
    • If same auxiliary code is recorded in other component, check harness for power supply and communication system of components shown by sub code.
    01 (2) (Communication Control) DE Slave Reset (Momentary Interruption) After engine is started, slave component was disconnected from system.
    • Check harness for power supply of component shown by auxiliary code.
    • Check harness for communication system of component shown by auxiliary code.
    01 (Communication Control) E4 Plural Frame Abort Plural frame transmission is aborted. Since this DTC is provided for engineering purpose, it may be detected when no actual failure exists.
    (1) It may be stored when the engine key is turned (again) (1 min.) after engine start.
    (2) It may be stored when the engine key is turned again after engine start.
    (3) When 210 sec. has passed after pulling out the power supply connector of the master component with the ignition switch in ACC or ON, this code is stored.

    Physical address: 250 DVD Auto Changer

    HINT:

    *2: This code may be stored when the engine key is turned again 1 min. after engine start.

    DTC TABLE

    Logical address DTC Diagnosis item Diagnosis content Countermeasure and inspected parts
    01 (Communication Control) D6 (1) Absence of Master Component in which this code is recorded has been disconnected from system with ignition in ACC or ON. Or, when this code was recorded, RSA Panel was disconnected.
    • Check harness for power supply of RSA Panel.
    • Check harness for communication system of RSA Panel.
    • Check harness for power supply of DVD player.
    • Check harness for communication system of DVD player.
    01 (Communication Control) D7 Communication Check Error Component in which this code is recorded is was disconnected from system after engine start. Or, when recorded this code, RSA Panel was disconnected.
    • Check harness for power supply of RSA Panel.
    • Check harness for communication system of RSA Panel.
    • Check harness for power supply of DVD player.
    • Check harness for communication system of DVD player.
    01 (3) (Communication Control) DC Transmission Error Transmission to component shown by sub-code has been failed. (Detecting this DTC does not necessary mean actual failure.)
    • If same sub-code is recorded in other component, check harness for power supply and communication system of components shown by sub code.
    01 (Communication Control) DD (2) Master Reset (Momentary Interruption) After engine is started, radio receiver assembly was disconnected from system.
    • Check harness for power supply of RSA Panel.
    • Check harness for communication system of RSA Panel.
    • Check harness for power supply of DVD player.
    • Check harness for communication system of DVD player.
    01 (Communication Control) DF (3) Master Error Due to defective condition of component with a display, master function is switched to audio equipment. Error occurs in communication between sub-master (audio) and master component.
    • Check harness for power supply of RSA Panel.
    • Check harness for communication system of RSA Panel.
    • Check harness for communication system between RSA Panel.
    01 (Communication Control) E0 (1) Registration Completion Instruction Error "Registration Completion Instruction" command from master cannot be received. Since this DTC is provided for engineering purpose, it may be detected when no actual failure exists.
    01 (Communication Control) E2 ON/OFF Instruction Parameter Error Error is detected in ON/OFF control command from DVD player. Replace DVD player."
    01 (Communication Control) E3 Registration Request Transmission
    • Registration Request command is output from slave component.
    • By reception of connection check Instruction, Registration Request command is output from sub-master component.
    		 Since this DTC is provided for engineering, it may be detected when no actual failure exists.
    01 (Communication Control) E4 Multiple Frame Abort Multiple frame transmission is aborted. Since this DTC is provided for engineering purpose, it may be detected when no actual failure exists.
    01 (Communication Control) 22 RAM Error Abnormal condition of RAM is detected. Replace DVD player.
    45 (DVD Changer) 44 DVD error Error is detected in DVD player. Replace radio and player.
    45 (DVD Changer) 45 EJECT error Disk cannot be ejected. Check whether foreign matters enter inspection.
    45 (DVD Changer) 46 Disk Crack A crack and dirt are in a disk. Inspect disk.
    45 (DVD Changer) 47 DVD High Temp High temperature is detected in DVD auto changer. Do not stop the operation for a period of time.
    45 (DVD Changer) 48 DVD Excess Current Excess current is applied to DVD auto changer. Replace DVD auto changer.
    45 (DVD Changer) 50 A Malfunction in insertion/ejection Operation malfunction in insertion/ejection. Replace DVD auto changer.
    45 (DVD Changer) 51 A Malfunction in switching disk Operation malfunction in switching disk. Replace DVD auto changer.
    (1) Even if no failure is detected, this code may be stored depending on the battery condition or voltage for starting an engine.
    (2) This code may be stored when the engine key is turned again after engine start.
    (3) When 210 sec. has passed after pulling out the power supply connector of the master component with the ignition switch in ACC or ON, this code is stored.
  4. PROBLEM SYMPTOMS TABLE 
    NOTE: When replacing the internal mechanism (computer part) of the audio system, be careful not to bring your body or clothing into contact with the terminals of the leads from the IC, etc. of the replacement part (spare part). 

    HINT:

    This inspection procedure was prepared on the assumption of system component troubles (except for the wires and connectors, etc.). This is a simple troubleshooting which should be carried out on the vehicle during system operation. Always inspect the trouble taking the following items into consideration.

    • Open or short circuit of the wire harness
    • Connector or terminal connection fault
PROBLEM SYMPTOM TABLE

  Problem Flow chart No.
Radio Radio does not operate when power switch turned to 'ON'. 1
Display indicates when power switch turned to 'ON', but no sound (including 'noise') is produced. 2
Noise present, but AM - FM does not operate. 3
Any speaker does not work. 4
Any AM or FM does not work. 5
Few preset turning bands. 5
Reception is poor. 6
Sound quality is poor. 7
Preset memory disappears. 8
Tape Player Cassette tape cannot be inserted. 9
Cassette tape inserted, but no power. 10
Power comes in, but tape player does not operate. 11
Any speaker does not work. 12
Sound quality is poor. 13
Tape jammed, malfunction with tape speed or auto-reverse. 14
Cassette tape cannot be ejected. 15
CD Player CD cannot be inserted. 16
CD can be inserted but no power. 17
Power coming in, but CD player does not operate. 18
Sound jumps. 19
Sound quality is poor (Volume faint) 20
Any speaker does not work. 21
CD cannot be ejected. 22
Power Amplifier No power comes in. 23
Power comes in, but power amplifier does not operate. 24
Any speaker does not work. 25
Noise Noise occurs 26
Noise is produced by vibration or shock while driving. 27
Noise is produced when engine starts. 28
Steering Pad Switch A audio system cannot be operated with steering pad switch. 29
Rear Seat Audio Quality of sound from headphone connected to headphone terminal is poor or no sound can be heard. 30

The term "AM" includes LW, MW and SW, and the term "FW" includes UKW.

  1. RADIO NOT OPERATING WHEN POWER SWITCH TURNED TO "ON" 
    Fig 13: Radio Operating Power Switch Turned Flow Chart
    G03486020Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. RADIO DISPLAY INDICATES WHEN POWER SWITCH TURNED TO "ON", BUT NO SOUND (INCLUDING "NOISE") IS PRODUCED 
    Fig 14: Displaying Indicates Power Switch Turned
    G03486021Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. RADIO NOISE PRESENT, BUT AM-FM NOT OPERATING 
    Fig 15: Identifying Radio Noise Present
    G03486022Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. RADIO ANY SPEAKER DOSE NOT WORK 
    Fig 16: Identifying Radio Any Speaker
    G03486023Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. RADIO ANY AM OR FM DOES NOR WORK FEW PRESET TUNING BANDS 
    Fig 17: Identifying Radio Few Preset Tuning Bands
    G03486024Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. RADIO POOR RECEPTION 
    Fig 18: Identifying Radio Poor Function Flow Chart
    G03486025Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. RADIO SOUND QUALITY POOR 
    Fig 19: Identifying Radio Sound Quality Poor Function Flow Chart
    G03486026Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. RADIO PRESET MEMORY DISAPPEARS 
    Fig 20: Identifying Radio Preset Memory Disappears Flow Chart
    G03486027Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. TAPE PLAYER CASSETTE TAPE CANNOT BE INSERTED 
    Fig 21: Tape Player Cassette Tape Cannot Inserted Flow Chart
    G03486028Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. TAPE PLAYER CASSETTE TAPE INSERTED, BUT NO POWER 
    Fig 22: Identifying Tape Player Cassette Tape Inserted Flow Chart
    G03486029Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. TAPE PLAYER POWER COMING IN, BUT TAPE PLAYER NOT OPERATING 
    Fig 23: Identifying Tape Player Power Coming
    G03486030Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. TAPE PLAYER ANY SPEAKER DOES NOT WORK 
    Fig 24: Identifying Tape Player Any Speaker
    G03486031Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. TAPE PLAYER SOUND QUALITY POOR (VOLUME FAINT) 
    Fig 25: Identifying Tape Player Sound Quality Poor (Volume Faint) Flow Chart
    G03486032Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. TAPE PLAYER TAPE JAMMED MALFUNCTION WITH TAPE SPEED OR AUTO-REVERSE 
    Fig 26: Identifying Tape Player Tape Jammed Malfunction With Tape Speed Or Auto-Reverse Flow Chart
    G03486033Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  15. TAPE PLAYER CASSETTE TAPE WILL NOT BE EJECTED 
    Fig 27: Identifying Tape Player Cassette Tape Ejected Flow Chart
    G03486034Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. CD PLAYER CD CANNOT BE INSERTED 
    Fig 28: Identifying CD Player Function Flow Chart
    G03486035Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  17. CD PLAYER CD INSERTED, BUT NO POWER 
    Fig 29: Identifying CD Player CD Inserted Flow Chart
    G03486036Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  18. CD PLAYER POWER COMING IN, BUT CD PLAYER NOT OPERATING 
    Fig 30: Identifying CD Player Power Coming Flow Chart
    G03486037Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. CD PLAYER SOUND JUMPS 
    Fig 31: Identifying CD Player Sound Jumps Flow Chart
    G03486038Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  20. CD PLAYER SOUND QUALITY POOR (VOLUME FAINT) 
    Fig 32: Identifying CD Player Sound Quality Poor Quality Function Flow Chart
    G03486039Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  21. CD PLAYER ANY SPEAKER DOES NOT WORK 
    Fig 33: Identifying CD Player Any Speaker Work Function Flow Chart
    G03486040Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  22. CD PLAYER CD WILL NOT BE EJECTED 
    Fig 34: Identifying CD Player CD Ejected Function Flow Chart
    G03486041Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  23. POWER AMPLIFIER NO POWER COMING IN 
    Fig 35: Identifying Power Amplifier Power Function Flow Chart
    G03486042Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  24. POWER AMPLIFIER POWER COMING IN, BUT WOOFER (POWER) AMPLIFIER NOT OPERATING 
    Fig 36: Power Coming In, But Woofer (Power) Amplifier Not Operating Flow Chart
    G03486043Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  25. POWER AMPLIFIER ANY SPEAKER DOES NOT WORK 
    Fig 37: Power Amplifier Any Speaker Work Flow Chart
    G03486044Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  26. NOISE OCCURS 
    Fig 38: Identifying Noise Occurs Flow Chart
    G03486045Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  27. NOISE PRODUCED BY VIBRATION OR SHOCK WHILE DRIVING 
    Fig 39: Noise Produced Vibration Or Shock While Driving Flow Chart
    G03486046Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  28. NOISE PRODUCED WHEN ENGINE STARTS 
    Fig 40: Identifying Noise Engine Starts Flow Chart
    G03486047Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  29. STEERING PAD SWITCH A AUDIO SYSTEM CANNOT BE OPERATED WITH STEERING PAD SWITCH 
    Fig 41: Identifying Audio System Cannot Be Operated With Steering Pad Switch Flow Chart
    G03486048Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  30. REAR SEAT AUDIO QUALITY OF SOUND FROM HEADPHONE TERMINAL IS POOR OR NO SOUND CAN BE HEARD 
    Fig 42: Identifying Quality Sound From Headphone Terminal Poor Or No Sound Can Be Heard Flow Chart
    G03486049Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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