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Audio System & Visual System: Overview Toyota 4Runner IV рестайлинг

Antenna Systems 52 illustrations ~5986 words

DESCRIPTION

DTC No.DTC Detection ConditionTrouble Area
01-21A malfunction exists in ROM.Radio receiver
01-22A malfunction exists in RAM.

DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE

DTC No.DTC Detection ConditionTrouble Area
01-D5 *1, *3A device that the sub-code shows is (was) disconnected from the system when turning the ignition switch to the ON or ACC position. The communication condition with the device that the code shows cannot be obtained when the engine starts.Power source circuit of the component shown by the sub-code AVC-LAN circuit between the radio receiver and the component shown by the sub-code Component shown by the sub-code
01-D8 *2, *3The device indicated by the sub-code is (was) disconnected from the system after the engine starts.
01-D9 *1, *3The device that had functioned before the engine stopped is (was) disconnected from the system when the engine switch is (was) in the ON or ACC position.
01-DA *3No response is identified when changing mode. Sound and image do not change by switch operation.
01-DB *1, *3A dual alarm is detected.
01-DE *3, *4A slave device has been disconnected after the engine starts
HINT: *1: Even if no fault is present, this trouble code may be stored depending on the battery condition or engine start voltage. *2: If the power connector is disconnected after the engine starts, this code is stored after 180 seconds. *3: If the device is reported as not existing during verification, check the power source circuit and AVC-LAN circuit for the device. *4: This code may be stored if the engine is started and the ignition switch is turned to the START position again.

DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE

Note. Before starting troubleshooting, be sure to clear DTCs to erase codes stored due to the reasons described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs. The radio receiver is the master unit. Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.

DTC No.DTC Detection ConditionTrouble Area
01-D6 *1When either of the following conditions is met: The device that stores (stored) the code has (had) been disconnected when the ignition switch is in the ACC or ON position The master device has (had) been disconnected when this code is storedRadio receiver power source circuit Power source circuit of the component which has stored this code AVC-LAN circuit between the radio receiver and the component which has stored this code Component which has stored this code Radio receiver
01-D7 *2When either of the following conditions is met: The device that stored the code has (had) been disconnected after the engine starts (started) The master device has (had) been disconnected when this code is (was) stored
HINT: *1: Even if no fault is present, this trouble code may be stored depending on the battery condition or engine start voltage. *2: When 210 seconds have elapsed after disconnecting the power supply connector of the master component with the ignition switch in the ACC or ON position, this code is stored.

DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE

Note. Before starting troubleshooting, be sure to clear DTCs to erase codes stored due to the reasons described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs. The radio receiver is the master unit. Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.

DTC No.DTC Detection ConditionTrouble Area
01-DC *1Transmission to component shown by sub-code failed (Detecting this DTC does not always mean actual failure)If the same sub-code is recorded in other components, check harness for power supply and communication system of all components shown by code
HINT: *1: This code may be stored if the engine is started, idled for 60 seconds and then started again.

DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE

Note. Before starting troubleshooting, be sure to clear DTCs to erase codes stored due to the reasons described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs. The radio receiver is the master unit. Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.

DTC No.DTC Detection ConditionTrouble Area
01-DD *1The device that should be the master has been disconnected after engine startRadio receiver power source circuit AVC-LAN circuit between the radio receiver and the component which has stored this code Radio receiver Component which has stored this code
01-E1 *2The AMP device records that the AMP output does not function even while the source device operates
HINT: *1: This code may be stored if the engine is started and the ignition switch is turned to START position again. *2: Even if no fault is present, this trouble code may be stored depending on the battery condition or engine start voltage.

DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE

Note. Before starting troubleshooting, be sure to clear DTCs to erase codes stored due to the reasons described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs. The radio receiver is the master unit. Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.

DTC No.DTC Detection ConditionTrouble Area
01-DF *1The device with a display fails and the master is switched to the audio device. Also when a communication error between sub-master (audio) and master occurs, this code is stored.Radio receiver power source circuit AVC-LAN circuit between the radio receiver and the component which has stored this code Radio receiver Component which has stored this code
HINT: *1: When 210 seconds have elapsed after disconnecting the power supply connector of the master component with the ignition switch in the ACC or ON position, this code is stored.

DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE

Note. Before starting troubleshooting, be sure to clear DTCs to erase codes stored due to the reasons described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs. The radio receiver is the master unit. Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.

DTC No.DTC Detection ConditionTrouble Area
01-E0"Registration complete" signal from the master device cannot be received.
01-E3The registration demand signal from the slave device is output. Or the registration demand signal is output by receiving connection confirmation signal from the sub-master device.
01-E4The multiple frame transmission is incomplete.

DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE

HINT

Even if no fault is present, this a trouble code may be stored depending on the battery condition or engine start voltage.

DTC No.DTC Detection ConditionTrouble Area
01-E2The command for ON/OFF control from the master device has a problem.Radio receiver

DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE

DTC No.DTC Detecting ConditionTrouble Area
44-10A mechanical error in the DVD player is detected while the DVD is not being inserted or ejected.Television display assembly
44-11DVD insertion or ejection is failed.
44-12DVD read problem occurs.

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
44-41An unsuitable disc is inserted.DVD Television display assembly
44-42The disc cannot be read.

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
44-43DVD-ROM operation is abnormal.DVD Television display assembly

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
44-44Operation error in the DVD mechanism.Television display assembly
44-48Excess current is present in the DVD player.
44-50Malfunction in insertion / ejection system.

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
44-45Disc cannot be ejected.Television display assembly
44-51Mechanical error occurs during elevator operation.
44-52Error occurs in DVD player clamp.

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
44-46Scratches or dirt is found on DVD surface or DVD is set upside down.DVD Television display assembly

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
44-47Sensor detects that DVD unit temperature is high. (Over 80°C)Television display assembly

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
44-78An error occurs during the decode process (MP3/ WMA).

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
44-7DAn incompatible MP3/WMA file is used. Although the file has an extension of ".mp3" or ".wma", the header information cannot be read.DVD Television display assembly
44-7EA disc with no music data is used. Playable files are not on the disc (MP3/WMA).
44-7FA copy-protected file, which cannot be played, is used.

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
62-10A mechanical error in the CD player is detected while the CD is not being inserted or ejected.Radio receiver
62-11CD insertion or ejection is failed.
62-12CD read problem occurs.
63-10A mechanical error in the CD changer is detected while the CD is not being inserted or ejected.
63-11CD insertion or ejection is failed.
63-12CD read problem occurs.

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
62-41An unsuitable disc is inserted.CD Radio receiver
62-42The disc cannot be read.
63-41An unsuitable disc is inserted.
63-42The disc cannot be read.

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
62-43CD-ROM operation is abnormalCD Radio receiver
63-43CD-ROM operation is abnormal

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
62-44Operation error in the CD mechanismRadio receiver
62-48Excess current is present in the CO player
62-50Malfunction in insertion/ejection system
63-44Operation error in the CD mechanism
63-48Excess current is present in the CD changer
63-50Malfunction in insertion/ejection system

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
62-45Disc cannot be ejected.Radio receiver
62-51Mechanical error occurs during elevator operation.
62-52Error occurs in CD player clamp.
63-45Magazine cannot be ejected.
63-51Mechanical error occurs during elevator operation.
63-52Error occurs in CD changer clamp.

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
62-46Scratches or dirt is found on CD surface or CD is set upside down.CD Radio receiver
63-46Scratches or dirt is found on CD surface or CD is set upside down.

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
62-47Sensor detects that CD unit temperature is high. (Over 80°C)Radio receiver
63-47Sensor detects that CD unit temperature is high. (Over 80°C)

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
62-78An error occurs during the decode process (MP3/ WMA).
63-78An error occurs during the decode process (MP3/ WMA).

DTC DETECTING CONDITION AND TROUBLE AREA

DTC No.DTC Detecting ConditionTrouble Area
62-7DAn incompatible MP3/WMA file is used. Although the file has an extension of ".mp3" or ".wma", the header information cannot be read.CD Radio receiver
62-7EA disc with no music data is used. Playable files are not on the disc (MP3/WMA).
62-7FA copy-protected file, which cannot be played, is used.
63-7DAn incompatible MP3/WMA file is used Although the file has an extension of ".mp3" or ".wma", the header information cannot be read.
63-7EA disc with no music data is used. Playable files are not on the disc (MP3/WMA).
63-7FA copy-protected file, which cannot be played, is used.

DTC DETECTING CONDITION AND TROUBLE AREA

This circuit is necessary for the ASL (Auto Sound Leveliser) built into the radio receiver.

Speed signals are received from the combination meter and used for the ASL.

The ASL function automatically adjusts the sound data in order to enable hearing the clear audio sound even when vehicle noise increases (as vehicle noise increases, the volume is turned up etc).

HINT

  1. A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter. The signal is changed to a pulse signal at the transistor in the combination meter. Each ECU controls the respective system based on the pulse signal.
  2. If a short occurs in an ECU, all systems in the diagram below will not operate normally.

Scheme 1

Scheme 1: WIRING DIAGRAM
Scheme 1: WIRING DIAGRAM

Scheme 2

Scheme 2: INSPECTION PROCEDURE
Scheme 2: INSPECTION PROCEDURE

Scheme 3

Scheme 3
Scheme 3

Scheme 4

Scheme 4
Scheme 4
  1. CHECK OPERATION OF SPEEDOMETER Drive the vehicle and check if the function of the speedometer on the combination meter is normal. OK: Actual vehicle speed and the speed indicated on the speedometer are the same. HINT: the vehicle speed sensor is functioning normally when the indication on the speedometer is normal. NG: CHECK COMBINATION METER OK: GO TO NEXT STEP
  2. INSPECT RADIO RECEIVER Disconnect the radio receiver connector R5. Measure the voltage. Jack up either one of the drive wheels. Move the shift lever to the neutral position. Turn the ignition switch to the ON position. Measure the voltage between terminal SPD of the radio receiver and body ground when the drive wheels are turned slowly. OK: Voltage pulses as shown in the illustration. OK: REPLACE RADIO RECEIVER NG: GO TO NEXT STEP
  3. CHECK HARNESS AND CONNECTOR (COMBINATION METER - RADIO RECEIVER) Disconnect the radio receiver connector R5 and combination meter connector C9. Measure the resistance according to the value(s) in the table below. Standard resistance COMBINATION METER - RADIO RECEIVER Tester Connection Condition Specified Condition SPD - C9-5 Ignition switch OFF Below 1 ohms NG: REPAIR OR REPLACE HARNESS AND CONNECTOR OK: GO TO NEXT STEP
  4. CHECK HARNESS AND CONNECTOR (COMBINATION METER - RADIO RECEIVER) Disconnect the radio receiver connector R5 and combination meter connector C9. Measure the resistance according to the value(s) in the table below. Standard resistance COMBINATION METER - RADIO RECEIVER Tester Connection Condition Specified Condition SPD - Body ground Ignition switch OFF 10 kohms or higher HINT: If the resistance between terminal SPD and body ground is less than 10 kohms, there may be a short in a wire harness, connector, or an ECU that is connected to the SPD signal wire. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OR EACH ECU OK: REPLACE COMBINATION METER

This circuit sends an operation signal from the steering pad switch to the radio receiver.

If there is an open in the circuit, the audio system cannot be operated using the steering pad switch. If there is a short in the circuit, the same condition as that when the switch is continuously depressed occurs.

Therefore, the radio receiver cannot be operated using the steering pad switch, and also the radio receiver itself cannot function.

Scheme 5

Scheme 5: WIRING DIAGRAM
Scheme 5: WIRING DIAGRAM

Power is supplied to the radio receiver and steering pad switch illumination when the light control switch is in the TAIL or HEAD position.

Scheme 6

Scheme 6: WIRING DIAGRAM
Scheme 6: WIRING DIAGRAM
  1. When the vehicle has a built-in type amplifier, a sound signal is sent from the radio receiver to the speakers via the "6 Speaker System" circuit.
  2. When the vehicle has a separate type amplifier, a sound signal from the radio receiver is amplified by the stereo component amplifier and then transmitted to the speaker via the "10 Speaker System" circuit.

If there is a short in this circuit, the stereo component amplifier detects it and stops output to the speakers. Thus sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier or speakers.

Scheme 7

Scheme 7: WIRING DIAGRAM
Scheme 7: WIRING DIAGRAM

Scheme 8

Scheme 8
Scheme 8

Scheme 9

Scheme 9
Scheme 9

Scheme 10

Scheme 10: INSPECTION PROCEDURE
Scheme 10: INSPECTION PROCEDURE

Scheme 11

Scheme 11
Scheme 11

Scheme 12

Scheme 12
Scheme 12
  1. CHECK HARNESS AND CONNECTOR Disconnect the connectors shown in the illustration from the stereo component amplifier or radio receiver and speakers. 10 Speaker System: Measure the resistance between each of the front No. 2 speakers and the stereo component amplifier to check for an open circuit in the wire harness. Standard resistance: Below 1 ohms 6 speaker System: Measure the resistance between each of the front No. 2 speakers and the radio receiver to check for an open circuit in the wire harness. Standard resistance: Below 1 ohms Measure the resistance between each of the front No. 2 speakers and each of the front No. 1 speakers to check for an open circuit in the wire harness. Standard resistance: Below 1 ohms 10 Speaker System: Measure the resistance between each of the rear speakers and the stereo component amplifier to check for an open circuit in the wire harness. Standard resistance: Below 1 ohms 6 Speaker System: Measure the resistance between each of the rear speakers and the radio receiver to check for an open circuit in the wire harness. Standard resistance: Below 1 ohms 10 Speaker System: Measure the resistance between each of the rear No. 2 speakers and the stereo component amplifier to check for an open circuit in the wire harness. Standard resistance: Below 1 ohms 10 Speaker System: Measure the resistance between the front stereo component speaker and the stereo component amplifier to check for an open circuit in the wire harness. Standard resistance: Below 1 ohms 10 Speaker System: Measure the resistance between the woofer box speaker and the stereo component amplifier to check for an open circuit in the wire harness. Standard resistance: Below 1 ohms Measure the resistance between the each speaker and body ground to check for a short circuit in the wire harness. Standard resistance: 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: GO TO NEXT STEP
  2. INSPECT FRONT NO. 1 SPEAKER Resistance check. Measure the resistance between the terminals of the speaker. Standard resistance: 10 Speaker System: 4 to 6 ohms 6 Speaker System: Approximately 4 ohms NG: REPLACE FRONT NO. 1 SPEAKER OK: GO TO NEXT STEP
  3. INSPECT REAR SPEAKER Resistance check. Measure the resistance between the terminals of the speaker. 10 Speaker System: Approximately 2.4 ohms 6 Speaker System: Approximately 4 ohms NG: REPLACE REAR SPEAKER OK: GO TO NEXT STEP
  4. INSPECT FRONT NO. 2 SPEAKER Check that the malfunction disappears when another speaker in good condition is installed. Standard: Malfunction disappears. HINT: Connect all the connectors to the front No. 2 speaker. When there is a possibility that either the right or left front speaker is detective, inspect by interchanging the right one with the left one. Perform the above inspection on both LH and RH sides. OK: REPLACE FRONT NO. 2 SPEAKER NG: GO TO NEXT STEP
  5. CONFIRM MODEL Result MODEL SPEAKER Result Proceed to 10 Speaker System A 6 Speaker System B B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-280593-S30197338802008022200000) A: GO TO NEXT STEP
  6. INSPECT WOOFER BOX SPEAKER Resistance check. Measure the resistance according to the value(s) in the table below. NOTE: The speaker should not be removed for checking. Standard resistance TESTER CONNECTION AND SPECIFIED CONDITION Tester Connection Condition Specified Condition 1-3 Always Approximately 1.2 ohms 2-4 Always Approximately 1.2 ohms NG: REPLACE WOOFER BOX SPEAKER OK: GO TO NEXT STEP
  7. INSPECT REAR NO. 2 SPEAKER Check that the malfunction disappears when another speaker in good condition is installed. OK: Malfunction disappears. HINT: Connect all the connectors to the rear No. 2 speaker. When there is a possibility that either the right or left rear speaker is detective, inspect by interchanging the right one with the left one. OK: REPLACE REAR NO. 2 SPEAKER NG: GO TO NEXT STEP
  8. INSPECT FRONT STEREO COMPONENT SPEAKER Resistance check. Measure the resistance between the terminals of the speaker. Standard resistance: 1.2 to 2.2 ohms NG: REPLACE FRONT STEREO COMPONENT SPEAKER OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-280593-S30197338802008022200000)

The radio receiver sends a sound signal to the stereo component amplifier through this circuit.

The sound signal that has been sent is amplified by the stereo component amplifier, and then is sent to the speakers.

If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier or speakers.

Scheme 13

Scheme 13: WIRING DIAGRAM
Scheme 13: WIRING DIAGRAM

Scheme 14

Scheme 14: INSPECTION PROCEDURE
Scheme 14: INSPECTION PROCEDURE
  1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO COMPONENT AMPLIFIER) Disconnect the connectors from the radio receiver and stereo component amplifier. Measure the resistance according to the value(s) in the table below. Standard resistance RADIO RECEIVER - STEREO COMPONENT AMPLIFIER Tester Connection Condition Specified Condition L+ - L+ Always Below 1 ohms L- - L- Always Below 1 ohms R+ - R+ Always Below 1 ohms R- - R- Always Below 1 ohms SLD - SLD Always Below 1 ohms L+ - Body ground Always 10 kohms or higher L- - Body ground Always 10 kohms or higher R+ - Body ground Always 10 kohms or higher R- - Body ground Always 10 kohms or higher SLD - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-280593-S30197338802008022200000)

The television display assembly sends a sound signal to the radio receiver through this circuit.

The sound signal that has been sent is amplified by the stereo component amplifier or radio receiver (built-in amplifier), and then is sent to the speakers.

If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier, radio receiver, or speakers.

Scheme 15

Scheme 15: WIRING DIAGRAM
Scheme 15: WIRING DIAGRAM

Scheme 16

Scheme 16: INSPECTION PROCEDURE
Scheme 16: INSPECTION PROCEDURE

Scheme 17

Scheme 17
Scheme 17
  1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - TELEVISION DISPLAY ASSEMBLY) Disconnect the connectors from the television display assembly and radio receiver. Measure the resistance according to the value(s) in the table below. Standard resistance RADIO RECEIVER - TELEVISION DISPLAY ASSEMBLY Tester Connection Condition Specified Condition CDR+-R+ Always Below 1 ohms CDR- - R- Always Below 1 ohms CDL+ - L+ Always Below 1 ohms CDL- - L- Always Below 1 ohms CSLD - SG1 Always Below 1 ohms R- - Body ground Always 10 kohms or higher L+ - Body ground Always 10 kohms or higher L- - Body ground Always 10 kohms or higher R+ - Body ground Always 10 kohms or higher S61 - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: GO TO NEXT STEP
  2. INSPECT TELEVISION DISPLAY ASSEMBLY Reconnect the television display assembly connector. Check the waveform according to the conditions shown in the table below. TESTER CONNECTION AND SPECIFIED CONDITION Tester Connection Condition Specified Condition R+ - Body ground Voice sound Is being produced A waveform synchronized with sound Is output R- - Body ground Voice sound Is being produced A waveform synchronized with sound Is output L+ - Body ground Voice sound Is being produced A waveform synchronized with sound Is output L- - Body ground Voice sound Is being produced A waveform synchronized with sound Is output NG: REPLACE TELEVISION DISPLAY ASSEMBLY OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-280593-S30197338802008022200000)

The stereo jack adapter sends an external device sound signal to the radio receiver through this circuit. The sound signal that has been sent is amplified by the stereo component amplifier or radio receiver, and then is sent to the speakers.

If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier, radio receiver, or speakers.

Scheme 18

Scheme 18: WIRING DIAGRAM
Scheme 18: WIRING DIAGRAM

Scheme 19

Scheme 19: INSPECTION PROCEDURE
Scheme 19: INSPECTION PROCEDURE
  1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO JACK ADAPTER) Disconnect the connectors from the stereo jack adapter and radio receiver. Measure the resistance according to the value(s) in the table below. Standard resistance RADIO RECEIVER - STEREO JACK ADAPTER Tester Connection Condition Specified Condition AUXO - AUXI Always Below 1 ohms ASGN - ASGN Always Below 1 ohms ARO - ARI Always Below 1 ohms ALO - ALI Always Below 1 ohms AUXO - Body ground Always 10 kohms or higher ASGN - Body ground Always 10 kohms or higher ARO - Body ground Always 10 kohms or higher ALO - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-280593-S30197338802008022200000)

This circuit sends a signal to the stereo component amplifier to mute noise. Because of that, the noise produced by changing the sound source ceases.

If there is an open in the circuit, noise can be heard from the speakers when changing the sound source. If there is a short in the circuit, even though the stereo component amplifier is normal, no sound, or only an extremely small sound, can be produced.

Scheme 20

Scheme 20: WIRING DIAGRAM
Scheme 20: WIRING DIAGRAM

Scheme 21

Scheme 21: INSPECTION PROCEDURE
Scheme 21: INSPECTION PROCEDURE

Scheme 22

Scheme 22
Scheme 22
  1. INSPECT STEREO COMPONENT AMPLIFIER Measure the voltage according to the value(s) in the table below. Standard voltage STEREO COMPONENT AMPLIFIER Tester Connection Condition Specified Condition MUTE - Body ground Turn ignition switch to ACC, Audio system is playing --> Changing Above 3.5 V --> Below 1 V OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-280593-S30197338802008022200000) NG: GO TO NEXT STEP
  2. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO COMPONENT AMPLIFIER) Disconnect the radio receiver connector R1 and stereo component amplifier connector S22. Measure the resistance according to the value(s) in the table below. Standard resistance RADIO RECEIVER - STEREO COMPONENT AMPLIFIER Tester Connection Condition Specified Condition MUTE - MUTE Always Below 1 ohms MUTE - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: GO TO NEXT STEP
  3. REPLACE WOOFER BOX SPEAKER ASSEMBLY (BUILT-IN STEREO COMPONENT AMPLIFIER) Replace the stereo component amplifier and check if the audio system operates normally. OK: The audio system operates normally. OK: END NG: REPLACE RADIO RECEIVER

The radio receiver controls the volume according to the MUTE signal from the television display assembly.

The MUTE signal is sent to reduce noise and a popping sound generated when switching the mode, etc. If there is an open in the circuit, noise can be heard from the speakers when changing the sound source. If there is a short in the circuit, even though the radio receiver is normal, no sound or, only an extremely small sound, can be produced.

Scheme 23

Scheme 23: WIRING DIAGRAM
Scheme 23: WIRING DIAGRAM

Scheme 24

Scheme 24: INSPECTION PROCEDURE
Scheme 24: INSPECTION PROCEDURE

Scheme 25

Scheme 25
Scheme 25
  1. INSPECT TELEVISION DISPLAY ASSEMBLY Measure the voltage according to the value(s) in the table below. Standard voltage TELEVISION DISPLAY ASSEMBLY Tester Connection Condition Specified Condition LMUT - Body ground Turn ignition switch to ACC, RSE system is playing --> Changing mode Above 3.5 V --> Below 1 V OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-280593-S30197338802008022200000) NG: GO TO NEXT STEP
  2. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - TELEVISION DISPLAY) Disconnect the radio receiver connector R4 and television display assembly connector R18. Measure the resistance according to the value(s) in the table below. Standard resistance RADIO RECEIVER - TELEVISION DISPLAY Tester Connection Condition Specified Condition MUTE - LMUT Always Below 1 ohms MUTE - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: GO TO NEXT STEP
  3. REPLACE TELEVISION DISPLAY ASSEMBLY Replace the television display assembly and check if the audio system operates normally. OK: The audio system operates normally. OK: END NG: REPLACE RADIO RECEIVER

Each unit of the audio system connected to the AVC-LAN (communication bus) transfers the signal of each switch by communication.

When a short to +B or short to ground occurs in this AVC-LAN, the audio system will not function normally as the communication is discontinued.

Scheme 26

Scheme 26: INSPECTION PROCEDURE
Scheme 26: INSPECTION PROCEDURE
  1. INSPECT RADIO RECEIVER Disconnect the radio receiver connectors. Measure the resistance according to the value(s) in the table below. Standard resistance RADIO RECEIVER Tester Connection Condition Specified Condition ATX+ (R1-5) - ATX- (R1-15) ( (1) ) Always 60 to 80 ohms TXM+ (R4-9) - TXM- (R4-10) Always 60 to 80 ohms (1) 10 Speaker System NG: REPLACE RADIO RECEIVER OK: GO TO NEXT STEP
  2. CHECK HARNESS AND CONNECTOR HINT: For details of the connectors, refer to " «TERMINALS OF ECU»(ref-280593-S37716308332008022200000) ". Referring to the AVC-LAN wiring diagram below, check all AVC-LAN circuits. Disconnect all connectors in all AVC-LAN circuits. Check for an open or short in all AVC-LAN circuits. OK: There is no open or short circuit. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-280593-S30197338802008022200000)

This circuit is necessary for the ASL (Auto Sound Leveliser) built into the stereo component amplifier. Speed signals are received from the combination meter and used for the ASL.

The ASL function automatically adjusts the sound data in order to enable hearing the clear audio sound even when vehicle noise increases (as vehicle noise increases, the volume is turned up etc).

HINT

  1. A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter. The signal is changed to a pulse signal at the transistor in the combination meter. Each ECU controls the respective system based on the pulse signal.
  2. If a short occurs in an ECU, all systems in the diagram below will not operate normally.

Scheme 27

Scheme 27: WIRING DIAGRAM
Scheme 27: WIRING DIAGRAM

Scheme 28

Scheme 28: INSPECTION PROCEDURE
Scheme 28: INSPECTION PROCEDURE

Scheme 29

Scheme 29
Scheme 29

Scheme 30

Scheme 30
Scheme 30
  1. CHECK OPERATION OF SPEEDOMETER Drive the vehicle and check if the function of the speedometer on the combination meter is normal. OK: Actual vehicle speed and the speed indicated on the speedometer are the same. HINT: The vehicle speed sensor is functioning normally when the indication on the speedometer is normal. NG: CHECK COMBINATION METER OK: GO TO NEXT STEP
  2. INSPECT STEREO COMPONENT AMPLIFIER Disconnect the stereo component amplifier connector S22. Measure the voltage. Jack up either one of the drive wheels. Move the shift lever to the neutral position. Turn the ignition switch to the ON position. Measure the voltage between terminal SPD of the stereo component amplifier and body ground when the drive wheels are turned slowly. OK: Voltage pulses as shown in the illustration. NG: Go to step 3 OK: REPLACE WOOFER BOX SPEAKER ASSEMBLY (BUILT- IN STEREO COMPONENT AMPLIFIER)
  3. CHECK HARNESS AND CONNECTOR (COMBINATION METER - STEREO COMPONENT AMPLIFIER) Disconnect the stereo component amplifier connector S22 and combination meter connector C9. Measure the resistance according to the value(s) in the table below. Standard resistance COMBINATION METER - STEREO COMPONENT AMPLIFIER Tester Connection Condition Specified Condition SPD-C9-5 Ignition switch OFF Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: GO TO NEXT STEP
  4. CHECK HARNESS AND CONNECTOR (COMBINATION METER - STEREO COMPONENT AMPLIFIER) Disconnect the stereo component amplifier connector S22 and combination meter connector C9. Measure the resistance according to the value(s) in the table below. Standard resistance COMBINATION METER - STEREO COMPONENT AMPLIFIER Tester Connection Condition Specified Condition SPD - Body ground Ignition switch OFF 10 kohms or higher HINT: If the resistance between terminal SPD and body ground is less than 10 kohms, there may be a short in a wire harness, connector, or an ECU that is connected to the SPD signal wire. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OR CHECK EACH ECU OK: REPLACE COMBINATION METER

Scheme 31

Scheme 31: INSPECTION PROCEDURE
Scheme 31: INSPECTION PROCEDURE
  1. IDENTIFY THE COMPONENT SHOWN BY SUB-CODE Enter the diagnostic mode. Press the preset switch "3" to change to "Detailed Information Mode". Identify the component shown by the sub-code. HINT: "190 (radio receiver)" is the component shown by the subcode in the example (Scheme 31) For details of the DTC display, refer to " «DTC CHECK / CLEAR»(ref-280593-S16829289912008022200000) ".
  2. CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE Inspect the power source circuit of the component shown by the sub-code. If the power source circuit is operating normally, proceed to the next step. Component Table: COMPONENTS REFERENCE CHART Component Proceed to Stereo component amplifier (440) «STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT»(ref-280593-S11184221072008022200000) Television display assembly (1B0) «TELEVISION DISPLAY ASSEMBLY POWER SOURCE CIRCUIT»(ref-280593-S07618624022008022200000)
  3. INSPECT RADIO RECEIVER Disconnect the radio receiver connectors. Measure the resistance according to the value(s) in the table below. Standard resistance RADIO RECEIVER Tester Connection Condition Specified Condition ATX+ (R1-5) - ATX- (R1-15) ( (1) ) Always 60 to 80 ohms TXM+ (R4-9) - TXM- (R4-10) Always 60 to 80 ohms (1) 10 Speaker System NG: REPLACE RADIO RECEIVER OK: GO TO NEXT STEP
  4. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT SHOWN BY SUB-CODE) HINT: Start the check from the circuit that is near the component shown by the sub-code first. For details of the connectors, refer to " «TERMINALS OF ECU»(ref-280593-S37716308332008022200000) ". Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the radio receiver and the component shown by the sub-code. Disconnect all connectors between the radio receiver and the component shown by sub-code. Check for an open or short in the AVC-LAN circuit between the radio receiver and the component shown by the sub-code. OK: There is no open or short circuit. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: GO TO NEXT STEP
  5. REPLACE COMPONENT SHOWN BY SUB-CODE Replace the component shown by the sub-code with a normal one and check if the same problem occurs again. OK: Same problem does not occur. NG: REPLACE RADIO RECEIVER OK: END

Scheme 32

Scheme 32: INSPECTION PROCEDURE
Scheme 32: INSPECTION PROCEDURE
  1. IDENTIFY THE COMPONENT SHOWN BY SUB-CODE Enter the diagnostic mode. Press the preset switch "3" to change to "Detailed Information Mode". Identify the component shown by the sub-code. HINT: "190 (radio receiver)" is the component shown by the subcode in the example (Scheme 32) For details of the DTC display, refer to " «DTC CHECK / CLEAR»(ref-280593-S16829289912008022200000) ".
  2. CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE Inspect the power source circuit of the component shown by the sub-code. If the power source circuit is operating normally, proceed to the next step. Component Table: COMPONENTS REFERENCE CHART Component Proceed to Television display assembly (1B0) «TELEVISION DISPLAY ASSEMBLY POWER SOURCE CIRCUIT»(ref-280593-S07618624022008022200000) Radio receiver (190) «RADIO RECEIVER POWER SOURCE CIRCUIT»(ref-280593-S34938068072008022200000)
  3. INSPECT RADIO RECEIVER Disconnect the radio receiver connectors. Measure the resistance according to the value(s) in the table below. Standard resistance RADIO RECEIVER Tester Connection Condition Specified Condition ATX+ (R1-5) - ATX- (R1-15) ( (1) ) Always 60 to 80 ohms TXM+ (R4-9) - TXM- (R4-10) Always 60 to 80 ohms (1) 10 Speaker System NG: REPLACE RADIO RECEIVER OK: GO TO NEXT STEP
  4. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER COMPONENT SHOWN BY SUB-CODE) HINT: Start the check from the circuit that is near the component shown by the sub-code first. For details of the connectors, refer to " «TERMINALS OF ECU»(ref-280593-S37716308332008022200000) ". Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the stereo component amplifier and the component shown by the sub-code. Disconnect all connectors between the stereo component amplifier and the component shown by sub-code. Check for an open or short in the AVC-LAN circuit between the stereo component amplifier and the component shown by the sub-code. OK: There is no open or short circuit. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: GO TO NEXT STEP
  5. REPLACE COMPONENT SHOWN BY SUB-CODE Replace the component shown by the sub-code with a normal one and check if the same problem occurs again. OK: Same problem does not occur. NG: REPLACE WOOFER BOX SPEAKER ASSEMBLY (BUILT-IN STEREO COMPONENT AMPLIFIER) OK: END

Scheme 33

Scheme 33: INSPECTION PROCEDURE
Scheme 33: INSPECTION PROCEDURE
  1. IDENTIFY THE COMPONENT SHOWN BY SUB-CODE Enter the diagnostic mode. Press the preset switch "3" to change to "Detailed Information Mode". Identify the component shown by the sub-code. HINT: "190 (radio receiver)" is the component shown by the sub-code in the example (Scheme 33) For details of the DTC display, refer to " «DTC CHECK / CLEAR»(ref-280593-S16829289912008022200000) ".
  2. CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE Inspect the power source circuit of the component shown by the sub-code. If the power source circuit is operating normally, proceed to the next step. Component Table: COMPONENTS REFERENCE CHART Component Proceed to Radio receiver (190) «RADIO RECEIVER POWER SOURCE CIRCUIT»(ref-280593-S34938068072008022200000) Stereo component amplifier (440) «STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT»(ref-280593-S11184221072008022200000)
  3. INSPECT RADIO RECEIVER Disconnect the radio receiver connectors. Measure the resistance according to the value(s) in the table below. Standard resistance RADIO RECEIVER Tester Connection Condition Specified Condition ATX+ (R1-5) - ATX- (R1-15) ( (1) ) Always 60 to 80 ohms TXM+ (R4-9) - TXM- (R4-10) Always 60 to 80 ohms (1) 10 Speaker System NG: REPLACE RADIO RECEIVER OK: GO TO NEXT STEP
  4. CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY ASSEMBLY - COMPONENT SHOWN BY SUB-CODE) HINT: Start the check from the circuit that is near the component shown by the sub-code first. For details of the connectors, refer to " «TERMINALS OF ECU»(ref-280593-S37716308332008022200000) ". Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the television display assembly and the component shown by the sub-code. Disconnect all connectors between the television display assembly and the component shown by sub-code. Check for an open or short in the AVC-LAN circuit between the television display assembly and the component shown by the sub-code. OK: There is no open or short circuit. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: GO TO NEXT STEP
  5. REPLACE COMPONENT SHOWN BY SUB-CODE Replace the component shown by the sub-code with a normal one and check if the same problem occurs again. OK: Same problem does not occur. NG: REPLACE TELEVISION DISPLAY ASSEMBLY OK: END

This circuit provides power to the radio receiver.

Scheme 34

Scheme 34: WIRING DIAGRAM
Scheme 34: WIRING DIAGRAM

Scheme 35

Scheme 35: INSPECTION PROCEDURE
Scheme 35: INSPECTION PROCEDURE
  1. INSPECT RADIO RECEIVER Disconnect the radio receiver connector R1 or R2. Measure the resistance according to the value in the table below. Standard resistance RADIO RECEIVER RESISTANCE Tester Connection Condition Specified Condition GND - Body ground Always Below 1 ohms Measure the voltage according to the values in the table below. Standard voltage RADIO RECEIVER VOLTAGE Tester Connection Condition Specified Condition +B - GND ( (1) ) Always 10 to 14 V B - GND ( (2) ) Always 10 to 14 V ACC - GND Ignition SW ACC 10 to 14 V (1) 6 Speaker (2) 10 Speaker NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-280593-S30197338802008022200000)

This circuit provides power to the stereo component amplifier.

Scheme 36

Scheme 36: WIRING DIAGRAM
Scheme 36: WIRING DIAGRAM

Scheme 37

Scheme 37: INSPECTION PROCEDURE
Scheme 37: INSPECTION PROCEDURE
  1. INSPECT STEREO COMPONENT AMPLIFIER Disconnect the stereo component amplifier connectors. Measure the resistance according to the values in the table below. Standard resistance STEREO COMPONENT AMPLIFIER RESISTANCE Tester Connection Condition Specified Condition GND - Body ground Always Below 1 ohms GND2 - Body ground Always Below 1 ohms Measure the voltage according to the values in the table below. Standard voltage STEREO COMPONENT AMPLIFIER VOLTAGE Tester Connection Condition Specified Condition +B-GND Always 10 to 14 V +B2 - GND Always 10 to 14 V ACC - GND Ignition SW ACC 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-280593-S30197338802008022200000)

Scheme 38

Scheme 38: PARTS LOCATION
Scheme 38: PARTS LOCATION

Scheme 39

Scheme 39: SYSTEM DIAGRAM
Scheme 39: SYSTEM DIAGRAM

SYSTEM DESCRIPTION

  1. OUTLINE As a unique feature of Rear Seat Entertainment (RSE) system, the front and rear seat occupants can enjoy different audio-visual modes at the same time. Thus, this system offers enhanced entertainment to the rear seat occupants. The rear seat occupants can control the audio-visual modes with the remote controller (switch assembly), and listen to the audio using wireless headphones. The RSE system is controlled by the television display assembly, and the communication between the audio head unit and the television display assembly is established via an AVC-LAN (Audio Visual Communication-Local Area Network). The RSE system can play discs recorded entirely in the MP3 format, as well as music discs containing a mixture of CD data (CD-DA files) and MP3 data. HINT: MP3 is short for MPEG1 (Moving Picture Expert Group Phase 1) & 2 Audio Layer 3. It is an audio compression standard set by a working group (MPEG) of the ISO (International Standards Organization). MP3 is able to compress audio data to about 1/10 the level of a conventional disc.
  2. FUNCTION OF MAIN COMPONENTS TELEVISION DISPLAY ASSEMBLY FUNCTION Television display assembly Displays DVD and Video images. Receives signals from the remote controller. Outputs audio signals to the wireless headphones in the form of infrared signals. Radio and navigation assembly ( (1) ) Radio receiver ( (2) ) Receives audio signals from the television display assembly and outputs them to the stereo component amplifier. Enables or disables the function of the remote controller for the television display assembly. Remote Controller (Switch assembly) Outputs various control signals of the RSE system to the television display assembly in the form of infrared signals. Wireless headphones Receives the audio signals from the television display assembly in the form of infrared signals. Volume adjustment of the wireless headphones can be done by using the volume control on the wireless headphones. VTR terminal This terminal is for connecting a video player's video and audio output terminals. (1) with Navigation System (2) without Navigation System

This is the sound signal circuit from the video (video adapter) terminal to the television display assembly.

Scheme 40

Scheme 40: WIRING DIAGRAM
Scheme 40: WIRING DIAGRAM

Scheme 41

Scheme 41: INSPECTION PROCEDURE
Scheme 41: INSPECTION PROCEDURE

Scheme 42

Scheme 42
Scheme 42
  1. CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY ASSEMBLY - VIDEO TERMINAL) Disconnect the connectors from the video (video adapter) terminal and television display assembly. Measure the resistance according to the value(s) in the table below. Standard resistance TELEVISION DISPLAY ASSEMBLY - VIDEO TERMINAL Tester Connection Condition Specified Condition SGND - SG7 Always Below 1 ohms AUXR - AUXR Always Below 1 ohms AUXL - AUXL Always Below 1 ohms CE - OPEN Always Below 1 ohms AUXR - Body ground Always 10 kohms or higher AUXL - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: GO TO NEXT STEP
  2. INSPECT VIDEO TERMINAL Reconnect the video (video adapter) terminal connector. Using an oscilloscope, check the signal waveform between each terminal and body ground according to the conditions, as shown in the chart. HINT: An external device system is playing (When the video (video adapter) terminal is used). Signal waveform VIDEO TERMINAL Tester Connection Condition Specified Condition AUXL - Body ground Sound Is being produced A waveform synchronized with sound Is output AUXR - Body ground Sound Is being produced A waveform synchronized with sound Is output NG: REPLACE VIDEO TERMINAL OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-280593-S27709006782008022200000)

This is the display signal circuit from the video terminal to the television display assembly.

Scheme 43

Scheme 43: WIRING DIAGRAM
Scheme 43: WIRING DIAGRAM

Scheme 44

Scheme 44: INSPECTION PROCEDURE
Scheme 44: INSPECTION PROCEDURE

Scheme 45

Scheme 45
Scheme 45

Scheme 46

Scheme 46
Scheme 46
  1. CHECK HARNESS AND CONNECTOR (TELEVISION DISPLAY ASSEMBLY - VIDEO TERMINAL) Disconnect the connectors from the video terminal and television display assembly. Measure the resistance according to the value(s) in the table below. Standard resistance TELEVISION DISPLAY ASSEMBLY - VIDEO TERMINAL Tester Connection Condition Specified Condition CE - OPEN Always Below 1 ohms NTSC - NTS4 Always Below 1 ohms SGND - SGN5 Always Below 1 ohms NTSC - Body ground Always 10 kohms or higher SGND - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: GO TO NEXT STEP
  2. INSPECT VIDEO TERMINAL Reconnect the video (video adapter) terminal connector. Measure the waveform according to the table below. OK VIDEO TERMINAL Tester Connection Condition Specified Condition NTSC-SGND External device Is playing A waveform synchronized with display signals is output HINT: The waveform pattern may differ from that shown in the illustration below due to differences in oscilloscope setting. A normal video terminal operating condition can be determined if any waveform is output. Oscilloscope waveform Terminal: NTSC - Body ground Setting: 200mV/DIV, 10 μs/DIV Condition: DVD display is ON. NG: REPLACE VIDEO TERMINAL OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-280593-S27709006782008022200000)

This is the power source circuit to operate the television display assembly.

Scheme 47

Scheme 47: WIRING DIAGRAM
Scheme 47: WIRING DIAGRAM

Scheme 48

Scheme 48: INSPECTION PROCEDURE
Scheme 48: INSPECTION PROCEDURE
  1. INSPECT TELEVISION DISPLAY ASSEMBLY Disconnect the connector from the television display assembly. Measure the resistance according to the value(s) in the table below. Standard resistance TELEVISION DISPLAY ASSEMBLY RESISTANCE Tester Connection Condition Specified Condition GND6 - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard voltage TELEVISION DISPLAY ASSEMBLY VOLTAGE Tester Connection Condition Specified Condition +B2 - GND Always 10 to 14 V ACC4-GND Ignition SW ACC 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-280593-S27709006782008022200000)

Scheme 49

Scheme 49: COMPONENTS
Scheme 49: COMPONENTS

Scheme 50

Scheme 50: REMOVAL
Scheme 50: REMOVAL

Scheme 51

Scheme 51
Scheme 51

Scheme 52

Scheme 52
Scheme 52
  1. REMOVE INSTRUMENT PANEL FINISH PLATE (See «REMOVAL»(/toyota/4runner/iv-2005-2009/remont/gauges-instrument-panels/#instrument-panel) )
  2. REMOVE INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY LOWER (See «REMOVAL»(/toyota/4runner/iv-2005-2009/remont/gauges-instrument-panels/#instrument-panel) )
  3. REMOVE INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY (See «REMOVAL»(/toyota/4runner/iv-2005-2009/remont/gauges-instrument-panels/#instrument-panel) )
  4. REMOVE CONSOLE UPPER REAR PANEL SUB-ASSEMBLY (See «REMOVAL»(/toyota/4runner/iv-2005-2009/remont/gauges-instrument-panels/#instrument-panel) )
  5. REMOVE CONSOLE PANEL SUB-ASSEMBLY UPPER (See «REMOVAL»(/toyota/4runner/iv-2005-2009/remont/gauges-instrument-panels/#instrument-panel) )
  6. REMOVE AIR CONDITIONING CONTROL ASSEMBLY (See «REMOVAL»(/toyota/4runner/iv-2005-2009/remont/gauges-instrument-panels/#instrument-panel) )
  7. REMOVE INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY CENTER (See «REMOVAL»(/toyota/4runner/iv-2005-2009/remont/gauges-instrument-panels/#instrument-panel) )
  8. REMOVE RADIO RECEIVER (w/ Bracket) Remove the 2 bolts. Disconnect the connectors and remove the radio receiver assembly with bracket.
  9. REMOVE RADIO NO. 1 BRACKET Remove the 4 screws and radio No. 1 bracket.
  10. REMOVE RADIO NO. 2 BRACKET Remove the 4 screws and radio No. 2 bracket.

See also:
• PRECAUTION
• REMOVAL

More articles — Audio System & Visual System