DESCRIPTION
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 01-21 | A ROM malfunction exists. | Radio receiver assembly |
| 01-22 | A RAM malfunction exists. | |
| 01-2E | A checksum malfunction exists. |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 01-D5 *1, *3 | A device indicated by the sub-code is (was) disconnected from the system while the power switch on (IG) or (ACC). The communication condition with the device that the DTC 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 assembly and component shown by the sub-code Component shown by the sub-code |
| 01-D8 *2, *3 | The device indicated by the sub-code is (was) disconnected from the system after the engine starts. | |
| 01-D9 *1, *3 | The device that had functioned before the engine stopped is (was) disconnected from the system while the power switch on (IG) or (ACC). | |
| 01-DA *3 | No response is identified when changing mode. Sound and image do not change by switch operation. | |
| 01-DB *1, *3 | A dual alarm is detected. | |
| 01-DE *3, *4 | A slave device has been disconnected after the engine starts. |
HINT
- *1: Even if no fault is present, this DTC may be stored depending on the battery condition or engine start voltage.
- *2: If the power connector is disconnected after the engine starts, this DTC 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 DTC may be stored if the engine is started and the power switch start again.
Note. Before starting troubleshooting, be sure to clear the DTCs stored due to the reasons described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs. The radio receiver assembly is the master unit. Be sure to clear and recheck for the DTCs after the inspection is completed to confirm that no DTCs are output.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 01-D6*1 | Either condition is met: The device that stores (stored) the DTC has (had) been disconnected while the power switch on (IG) or (ACC). The master device has (had) been disconnected when this DTC is stored. | Radio receiver assembly power source circuit Power source circuit of the component which has stored this code AVC-LAN circuit between the radio receiver assembly and component which has stored this code Component which has stored this code Radio receiver assembly |
| 01-D7*2 | Either condition 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 DTC is (was) stored. |
HINT
- *1: Even if no fault is present, this DTC 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 power switch on (IG) or (ACC), this DTC is stored.
Note. Before starting troubleshooting, be sure to clear the DTCs stored due to the reasons described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs. The radio receiver assembly is the master unit. Be sure to clear and recheck for the DTCs after the inspection is completed to confirm that no DTCs are output.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 01-DC *1 | Transmission to component shown by sub-code failed (Detecting this DTC does not always mean actual failure). | If the same sub-code is stored in other components, check power source circuit and communication system of all components shown by sub-code |
HINT
*1: If the power switch is turned off after idling for 60 seconds, this DTC may be stored when the engine is started again.
Note. Before starting troubleshooting, be sure to clear the DTCs stored due to the reason described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs. The radio receiver assembly is the master unit. Be sure to clear and recheck for the DTCs after the inspection is completed to confirm that no DTCs are output.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 01-DD *1 | The device that should be the master has been disconnected after the engine starts. | Radio receiver assembly power source circuit AVC-LAN circuit between the radio receiver assembly and component which has stored this code Radio receiver assembly Component which has stored this code |
| 01-E1 *2 | The AMP device stores that the AMP output does not function even while the source device operates. |
HINT
- *1: If the power switch is turned off after idling for 60 seconds, this DTC may be stored when the engine is started again.
- *2: Even if no fault is present, this DTC may be stored depending on the battery condition or engine start voltage.
Note. Before starting troubleshooting, be sure to clear the DTCs stored due to the reasons described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs. The radio receiver assembly is the master unit. Be sure to clear and recheck for the DTCs after the inspection is completed to confirm that no DTCs are output.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 01-DF *1 | The device with a display fails and the master unit is switched to the audio device. Also when a communication error between the sub-master unit (audio) and master unit occurs, this DTC is stored. | Radio receiver assembly power source circuit AVC-LAN circuit between the radio receiver assembly and component which has stored this code Radio receiver assembly 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 power switch on (IG) or (ACC), this DTC is stored.
Note. Before starting troubleshooting, be sure to clear the DTCs stored due to the reason described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs. The radio receiver assembly is the master unit. Be sure to clear and recheck for the DTCs after the inspection is completed to confirm that no DTCs are output.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 01-E0 | "Registration complete" signal from the master device cannot be received. | |
| 01-E3 | Either condition is met: The registration demand signal from the slave device is output. The registration demand signal is output by receiving connection confirmation signal from the sub-master device. | |
| 01-E4 | The multiple frame transmission is incomplete. |
HINT
Even if no fault is present, these DTCs may be stored depending on the battery condition or engine start voltage.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 01-E2 | The command for ON/OFF control from the master device has a problem. | Radio receiver assembly |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 01-F2 | Any reply to a system inspection instruction, system inspection result request or diagnosis memory request could not be completed within a designated time. | Stereo component amplifier assembly |
| 01-FF | No response to a diagnosis request |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 57-10 | "Bluetooh" module malfunction | Radio receiver assembly |
| 57-47 | "Bluetooth" module is not installed. Problem with "Bluetooth" module Problem in communication line to "Bluetooth" module |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 60-10 | The AM tuner PLL (phase locked loop) synchronization is impossible. | Radio receiver assembly |
| 60-11 | The FM tuner PLL (phase locked loop) synchronization is impossible. |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 60-42 | The power source of the tuner is abnormal. | Radio receiver assembly |
| 60-43 | The AM tuner is abnormal. | |
| 60-44 | The FM tuner is abnormal. | |
| 60-50 | A problem occurs in the IC inside the tuner unit and radio reception is not normal. |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 62-10 | A mechanical error in the CD player is detected while the CD is not being inserted or ejected. | Radio receiver assembly |
| 62-11 | CD cannot be inserted or ejected. | |
| 62-12 | CD read problem occurs. | |
| 63-10 | A mechanical error in the CD changer is detected while the CD is not being inserted or ejected. | |
| 63-11 | CDs cannot be inserted or ejected. | |
| 63-12 | CD read problem occurs. |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 62-41 | An unsuitable disc is inserted. | CD Radio receiver assembly |
| 62-42 | The disc cannot be read. | |
| 63-41 | An unsuitable disc is inserted. | |
| 63-42 | The disc cannot be read. |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 62-43 | CD-ROM operation is abnormal. | CD Radio receiver assembly |
| 63-43 | CD-ROM operation is abnormal. |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 62-44 | Operation error in the CD mechanism | Radio receiver assembly |
| 62-48 | Excess current is present in the CD player. | |
| 62-50 | Malfunction in insertion/ejection system | |
| 63-44 | Operation error in the CD mechanism | |
| 63-48 | Excess current is present in the CD changer. | |
| 63-50 | Malfunction in insertion/ejection system |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 62-45 | CD cannot be ejected. | Radio receiver assembly |
| 62-51 | Mechanical error occurs during elevator operation. | |
| 62-52 | Error occurs in CD player clamp. | |
| 63-45 | CD cannot be ejected. | |
| 63-51 | Mechanical error occurs during elevator operation. | |
| 63-52 | Error occurs in CD changer clamp. |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 62-46 | Scratches or dirt is found on CD surface or CD is set upside down. | CD Radio receiver assembly |
| 63-46 |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 62-47 | Sensor detects that CD unit temperature is high (over 80°C (176°F)). | Radio receiver assembly |
| 63-47 |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 62-78 | An error occurs during the decode process (MP3/WMA). | |
| 63-78 |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 62-7D | An 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 assembly |
| 63-7D | ||
| 62-7E | A disc with no music data is used. Playable files are not on the disc (MP3/WMA). | |
| 63-7E | ||
| 62-7F | Copyright protection exists and playback is not possible. | |
| 63-7F |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C0-11 | Tuner PLL synchronization is impossible. | Radio receiver assembly |
| C0-12 | A communication error occurred in CDED. | |
| C0-13 | A communication error occurred in SSDEC. | |
| C0-14 | No response received from SSDEC. | |
| C0-15 | An error occurred in CAP internal NVM. | |
| C0-16 | An error occurred in CAP. |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C0-40 | Antenna is not connected. | Antenna cord Amplifier antenna assembly (Satellite radio antenna) Radio receiver assembly |
| C0-41 | Short in antenna circuit |
The circuit is necessary for the Automatic Sound Levelizer (ASL) built into the radio receiver assembly.
Speed signals are received from the combination meter assembly (No. 3 meter circuit plate) and used for the ASL.
The ASL function automatically adjusts the sound volume in order to enable clear audio quality even when vehicle noise increases (as vehicle noise increases, the volume is turned up etc.).
HINT
- A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter assembly (No. 3 meter circuit plate). The signal is changed to a pulse signal at the transistor in the combination meter assembly (No. 3 meter circuit plate). Each ECU controls the respective system based on the pulse signal.
- If a short occurs in any of the ECUs or in the wire harness connected to an ECU, all systems in the following diagram will not operate normally.
Scheme 91
Scheme 92
Scheme 93
- INSPECT COMBINATION METER ASSEMBLY (NO. 3 METER CIRCUIT PLATE (OUTPUT WAVEFORM)) Check the output waveform. Remove the combination meter assembly (No. 3 meter circuit plate) with the connector still connected. Connect an oscilloscope to terminal L27-7 (+S) and body ground. Turn the power switch on (IG). Turn the wheel slowly. Check the signal waveform according to the condition(s) in the table below. Item Condition Tool setting 5 V/DIV., 20 ms./DIV. Vehicle condition Driving at approx. 20 km/h (12 mph) OK The waveform is displayed as shown in the illustration. HINT: When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows. TEXT IN ILLUSTRATION *1 Component with harness connected (Combination Meter Assembly (No. 3 Meter Circuit Plate)) NG --> See step 4 OK: Go to next step
- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY) Disconnect the radio receiver assembly and combination meter assembly (No. 3 meter circuit plate) connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L50-3 (SPD) - L27-7 (+S) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Radio Receiver Assembly) *2 Front view of wire harness connector (to Combination Meter Assembly (No. 3 meter circuit plate)) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
- REPLACE RADIO RECEIVER ASSEMBLY. Refer to «REMOVAL»(ref-393246-S30803827762011040700000)
- GO TO METER / GAUGE SYSTEM. Refer to «Speed Signal Circuit»(ref-393244-S32773047312011040700000)
This circuit sends an operation signal from the steering pad switch assembly to the radio receiver assembly.
If there is an open in the circuit, the audio system cannot be operated using the steering pad switch assembly.
If there is a short in the circuit, the same condition as to when a switch is continuously depressed occurs.
Therefore, the radio receiver assembly cannot be operated using the steering pad switch assembly, and also the radio receiver assembly itself cannot function.
Scheme 94
Power is supplied to the radio receiver assembly and steering pad switch assembly illumination when the light control switch is in the tail or head position.
Scheme 95
except for 8 Speakers
- If there is a short in this circuit, the radio receiver assembly detects it and stops output to the speakers.
- Thus sound cannot be heard from the speakers even if there is no malfunction in the radio receiver assembly or speakers.
- If a short is detected in the speaker circuit, no sound can be heard from the speakers.
for 8 Speakers
- If there is a short in this circuit, the stereo component amplifier assembly 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 assembly or speakers.
- If a short is detected in the speaker circuit, no sound can be heard from the speakers.
Scheme 96
Scheme 97
Scheme 98
Scheme 99
Scheme 100
Scheme 101
Scheme 102
Scheme 103
Scheme 104
Scheme 105
Scheme 106
- CONFIRM MODEL Result Result Proceed to except for 8 Speakers A for 8 Speakers B B --> See step 6 A: Go to next step
- CHECK HARNESS AND CONNECTOR Disconnect the connectors shown in the illustration from the radio receiver assembly and speakers. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Radio Receiver Assembly) *2 Front view of wire harness connector (to Radio Receiver Assembly)*5 *3 Front view of wire harness connector (to Front No. 1 Speaker, Rear Speaker) *4 Front view of wire harness connector (to Front No. 2 Speaker) *5: for 6 Speakers Measure the resistance between each of the front No. 2 speakers and the radio receiver assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition L34-2 (FL+) - I3-2 (+) Always Below 1 ohms L34-6 (FL-) - I3-4 (-) Always Below 1 ohms L34-1 (FR+) - I2-2 (+) Always Below 1 ohms L34-5 (FR-) - I2-4 (-) Always Below 1 ohms Measure the resistance between each of the front No. 1 speakers and front No. 2 speakers to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition I3-1 (+) - O1-1 Always Below 1 ohms I3-3 (-) - O1-2 Always Below 1 ohms I2-1 (+) - N1-1 Always Below 1 ohms I2-3 (-) - N1-2 Always Below 1 ohms for 6 Speakers: Measure the resistance between each of the rear speakers and the radio receiver assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition L35-2 (RL+) - Q3-1 Always Below 1 ohms L35-6 (RL-) - Q3-2 Always Below 1 ohms L35-1 (RR+) - P3-1 Always Below 1 ohms L35-3 (RR-) - P3-2 Always Below 1 ohms Measure the resistance between the radio receiver assembly and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition L34-2 (FL+) - Body ground Always 10 kohms or higher L34-6 (FL-) - Body ground Always 10 kohms or higher L34-1 (FR+) - Body ground Always 10 kohms or higher L34-5 (FR-) - Body ground Always 10 kohms or higher L35-2 (RL+) - Body ground*1 Always 10 kohms or higher L35-6 (RL-) - Body ground*1 Always 10 kohms or higher L35-1 (RR+) - Body ground*1 Always 10 kohms or higher L35-3 (RR-) - Body ground*1 Always 10 kohms or higher *1: for 6 Speakers Measure the resistance between each of the front No. 2 speakers and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition I3-1 (+) - Body ground Always 10 kohms or higher I3-3 (-) - Body ground Always 10 kohms or higher I2-1 (+) - Body ground Always 10 kohms or higher I2-3 (-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- INSPECT FRONT NO. 1 SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition O1-1 - O1-2 Always 3.2 to 4.8 ohms N1-1 - N1-2 Always 3.2 to 4.8 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Front No. 1 Speaker) NG --> See step 12 OK: Go to next step
- INSPECT FRONT NO. 2 SPEAKER Check that the malfunction disappears when a known good speaker is installed. Refer to «REMOVAL»(ref-393246-S23585921082011040700000). OK Malfunction disappears. HINT: Connect all the connectors to the front No. 2 speakers that were disconnected. When there is a possibility that either the right or left front speaker is defective, inspect by interchanging the right one with the left one. Perform the above inspection on both LH and RH sides. Proceed to the next step based on the inspection result. Result Result Proceed to OK A NG (for 6 Speakers) B NG (for 4 Speakers) C C --> See step 11 B --> See step 5 A --> END (FRONT NO. 2 SPEAKER WAS DEFECTIVE)
- INSPECT REAR SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Q3-1 - Q3-2 Always 3.2 to 4.8 ohms P3-1 - P3-2 Always 3.2 to 4.8 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Rear Speaker) NG --> See step 14 OK --> See step 11
- CHECK HARNESS AND CONNECTOR Disconnect the connectors shown in the illustration from the stereo component amplifier assembly and speakers. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Stereo Component Amplifier Assembly) *2 Front view of wire harness connector (to Stereo Component Amplifier Assembly) *3 Front view of wire harness connector (to Front No. 1 Speaker, Rear Speaker) *4 Front view of wire harness connector (to Front No. 2 Speaker) *5 Front view of wire harness connector (to Rear No. 2 Speaker) Measure the resistance between each of the front No. 1 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition L32-8 (WFL+) - O1-1 Always Below 1 ohms L32-7 (WFL-) - O1-2 Always Below 1 ohms L32-2 (WFR+) - N1-1 Always Below 1 ohms L32-6 (WFR-) - N1-2 Always Below 1 ohms Measure the resistance between each of the front No. 2 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition L30-2 (FL+) - I5-1 Always Below 1 ohms L30-1 (FL-) - I5-2 Always Below 1 ohms L30-9 (FR+) - I4-1 Always Below 1 ohms L30-3 (FR-) - I4-2 Always Below 1 ohms Measure the resistance between each of the rear speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition L32-3 (RL+) - Q3-1 Always Below 1 ohms L32-9 (RL-) - Q3-2 Always Below 1 ohms L32-10 (RR+) - P3-1 Always Below 1 ohms L32-4 (RR-) - P3-2 Always Below 1 ohms Measure the resistance between each of the rear No. 2 speakers and the stereo component amplifier assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition L30-4 (TWR+) - Q5-1 Always Below 1 ohms L30-10 (TWR-) - Q5-2 Always Below 1 ohms L30-5 (TWL+) - P5-1 Always Below 1 ohms L30-12 (TWL-) - P5-2 Always Below 1 ohms Measure the resistance between the stereo component amplifier assembly and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition L32-8 (WFL+) - Body ground Always 10 kohms or higher L32-7 (WFL-) - Body ground Always 10 kohms or higher L32-6 (WFR-) - Body ground Always 10 kohms or higher L32-2 (WFR+) - Body ground Always 10 kohms or higher L32-3 (RL+) - Body ground Always 10 kohms or higher L32-9 (RL-) - Body ground Always 10 kohms or higher L32-10 (RR+) - Body ground Always 10 kohms or higher L32-4 (RR-) - Body ground Always 10 kohms or higher L30-9 (FR+) - Body ground Always 10 kohms or higher L30-3 (FR-) - Body ground Always 10 kohms or higher L30-2 (FL+) - Body ground Always 10 kohms or higher L30-1 (FL-) - Body ground Always 10 kohms or higher L30-4 (TWR+) - Body ground Always 10 kohms or higher L30-10 (TWR-) - Body ground Always 10 kohms or higher L30-5 (TWL+) - Body ground Always 10 kohms or higher L30-12 (TWL-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- INSPECT FRONT NO. 1 SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition O1-1 - O1-2 Always 1.4 to 2.2 ohms N1-1 - N1-2 Always 1.4 to 2.2 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Front No. 1 Speaker) NG --> See step 12 OK: Go to next step
- INSPECT FRONT NO. 2 SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition I5-1 - I5-2 Always 1.5 to 2.5 ohms I4-1 - I4-2 Always 1.5 to 2.5 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Front No. 2 Speaker) NG --> See step 13 OK: Go to next step
- INSPECT REAR SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Q3-1 - Q3-2 Always 1.5 to 2.2 ohms P3-1 - P3-2 Always 1.5 to 2.2 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Rear Speaker) NG --> See step 14 OK: Go to next step
- INSPECT REAR NO. 2 SPEAKER Resistance check Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Q5-1 - Q5-2 Always 1.5 to 2.5 ohms P5-1 - P5-2 Always 1.5 to 2.5 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Rear No. 2 Speaker) NG --> See step 15 OK --> See step 11
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-393251-S28380599262011040700000)
- REPLACE FRONT NO. 1 SPEAKER. Refer to «REMOVAL»(ref-393246-S13785156902011040700000)
- REPLACE FRONT NO. 2 SPEAKER. Refer to «REMOVAL»(ref-393246-S23585921082011040700000)
- REPLACE REAR SPEAKER. Refer to «REMOVAL»(ref-393246-S23842677522011040700000)
- REPLACE REAR NO. 2 SPEAKER. Refer to «REMOVAL»(ref-393246-S23842677522011040700000)
The radio receiver assembly sends sounds signal to the stereo component amplifier assembly through this circuit.
The sound signal that has been sent is amplified by the stereo component amplifier assembly, 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 assembly or speakers.
Scheme 107
Scheme 108
- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY- STEREO COMPONENT AMPLIFIER ASSEMBLY) Disconnect the radio receiver assembly and stereo component amplifier assembly connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L40-9 (L+) - L31-3 (L+) Always Below 1 ohms L40-19 (L-) - L31-2 (L-) Always Below 1 ohms L40-8 (R+) - L31-5 (R+) Always Below 1 ohms L40-18 (R-) - L31-4 (R-) Always Below 1 ohms L40-9 (L+) - Body ground Always 10 kohms or higher L40-19 (L-) - Body ground Always 10 kohms or higher L40-8 (R+) - Body ground Always 10 kohms or higher L40-18 (R-) - Body ground Always 10 kohms or higher L40-10 (SLD) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Radio Receiver Assembly) *2 Front view of wire harness connector (to Stereo Component Amplifier Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 2
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-393251-S28380599262011040700000)
The No. 1 stereo jack adapter assembly sends sound signal from an external device to the radio receiver assembly through this circuit.
The sound signal that has been sent is amplified by the stereo component amplifier assembly or radio receiver assembly, 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 assembly, radio receiver assembly or speakers.
Scheme 109
Scheme 110
- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY) Disconnect the No. 1 stereo jack adapter assembly and radio receiver assembly connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance FOR 8 SPEAKERS Tester Connection Condition Specified Condition SJ-4 (AUXO) - L41-19 (AUXI) Always Below 1 ohms SJ-3 (ASGN) - L41-16 (ASGN) Always Below 1 ohms SJ-2 (ARO) - L41-15 (ARI) Always Below 1 ohms SJ-1 (ALO) - L41-17 (ALI) Always Below 1 ohms SJ-5 (AGND) - L41-18 (AGND) Always Below 1 ohms SJ-4 (AUXO) - Body ground Always 10 kohms or higher SJ-3 (ASGN) - Body ground Always 10 kohms or higher SJ-2 (ARO) - Body ground Always 10 kohms or higher SJ-1 (ALO) - Body ground Always 10 kohms or higher SJ-5 (AGND) - Body ground Always 10 kohms or higher EXCEPT FOR 8 SPEAKERS Tester Connection Condition Specified Condition SJ-4 (AUXO) - L50-19 (AUXI) Always Below 1 ohms SJ-3 (ASGN) - L50-16 (ASGN) Always Below 1 ohms SJ-2 (ARO) - L50-15 (ARI) Always Below 1 ohms SJ-1 (ALO) - L50-17 (ALI) Always Below 1 ohms SJ-5 (AGND) - L50-18 (AGND) Always Below 1 ohms SJ-4 (AUXO) - Body ground Always 10 kohms or higher SJ-3 (ASGN) - Body ground Always 10 kohms or higher SJ-2 (ARO) - Body ground Always 10 kohms or higher SJ-1 (ALO) - Body ground Always 10 kohms or higher SJ-5 (AGND) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Radio Receiver Assembly) *2 Front view of wire harness connector (to No. 1 Stereo Jack Adapter Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 2
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-393251-S28380599262011040700000)
This circuit sends a signal to the stereo component amplifier assembly 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 assembly is functioning, no sound, or only an extremely faint sound, can be heard.
Scheme 111
Scheme 112
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Scheme 114
- INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition L31-1 (MUTE) - Body ground Power switch on (ACC), audio system is playing --> Changing sources Above 2.5 V --> Below 0.5 V TEXT IN ILLUSTRATION *1 Component with harness connected (Stereo Component Amplifier Assembly) NG --> See step 2 OK --> See step 5
- CHECK HARNESS AND CONNECTOR Disconnect the radio receiver assembly and stereo component amplifier assembly connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L40-7 (MUTE) - L31-1 (MUTE) Always Below 1 ohms L40-7 (MUTE) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Radio Receiver Assembly) *2 Front view of wire harness connector (to Stereo Component Amplifier Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- INSPECT STEREO COMPONENT AMPLIFIER ASSEMBLY (OUTPUT SIGNAL) Reconnect the stereo component amplifier assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition L40-7 (MUTE) - Body ground Power switch on (ACC), audio system is playing Above 2.5 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Radio Receiver Assembly) NG --> See step 6 OK --> See step 4
- REPLACE RADIO RECEIVER ASSEMBLY. Refer to «REMOVAL»(ref-393246-S30803827762011040700000)
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-393251-S28380599262011040700000)
- REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-393246-S17288720512011040700000)
Each audio system component connected to the AVC-LAN (communication bus) transfers the switch signals by the audio visual communication local area network.
If a short to +B or short to ground occurs in this AVC-LAN, the audio system will not function normally as communication is stopped.
The circuit is necessary for the Automatic Sound Levelizer (ASL) built into the stereo component amplifier assembly.
Speed signals are received from the combination meter assembly (No. 3 meter circuit plate) and used for the ASL.
The ASL function automatically adjusts the sound volume in order to clear audio quality even when vehicle noise increases (as vehicle noise increases, the volume is turned up etc.).
HINT
- A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter assembly (No. 3 meter circuit plate). The signal is changed to a pulse signal at the transistor in the combination meter assembly (No. 3 meter circuit plate). Each ECU controls the respective system based on the pulse signal.
- If a short occurs in any of the ECUs or in the wire harness connected to an ECU, all systems in the following diagram will not operate normally.
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- INSPECT COMBINATION METER ASSEMBLY (No. 3 meter circuit plate (OUTPUT WAVEFORM)) Check the output waveform. Remove the combination meter assembly (No. 3 meter circuit plate) with the connector still connected. Connect an oscilloscope to terminal L27-7 (+S) and body ground. Turn the power switch on (IG). Turn the wheel slowly. Check the signal waveform according to the condition(s) in the table below. Item Condition Tool setting 5 V/DIV., 20 ms./DIV. Vehicle condition Driving at approx. 20 km/h (12 mph) OK The waveform is displayed as shown in the illustration. HINT: When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows. TEXT IN ILLUSTRATION *1 Component with harness connected (Combination Meter Assembly (No. 3 meter circuit plate)) NG --> See step 9 OK: Go to next step
- CHECK HARNESS AND CONNECTOR Disconnect the stereo component amplifier assembly and combination meter assembly (No. 3 meter circuit plate) connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L31-11 (SPD) - L27-7 (+S) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Stereo Component Amplifier Assembly) *2 Front view of wire harness connector (to Combination Meter Assembly (No. 3 Meter Circuit Plate)) NG --> See step 3 OK --> See step 8
- CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - NO. 4 JUNCTION BLOCK) Disconnect the stereo component amplifier assembly connector. Disconnect the No. 4 junction block connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L31-11 (SPD) - 4A-69 Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Stereo Component Amplifier Assembly) *2 Front view of wire harness connector (to No. 4 Junction Block) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - NO. 4 JUNCTION BLOCK) OK: Go to next step
- CHECK HARNESS AND CONNECTOR (NO. 4 JUNCTION BLOCK - NO. 3 JUNCTION BLOCK) Disconnect the No. 4 junction block connector. Disconnect the No. 3 junction block connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4A-21 - 3B-85 Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to No. 4 Junction Block) *2 Front view of wire harness connector (to No. 3 Junction Block) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK HARNESS AND CONNECTOR (NO. 3 JUNCTION BLOCK - COMBINATION METER ASSEMBLY) Disconnect the No. 3 junction block connector. Disconnect the combination meter assembly (No. 3 meter circuit plate) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3A-26 - L27-7 (+S) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to No. 3 Junction Block) *2 Front view of wire harness connector (to Combination Meter Assembly (No. 3 Meter Circuit Plate)) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- INSPECT NO. 4 JUNCTION BLOCK Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 4A-69 - 4A-21 Always Below 1 ohms TEXT IN ILLUSTRATION *1 No. 4 Junction Block NG --> REPLACE NO. 4 JUNCTION BLOCK OK: Go to next step
- INSPECT NO. 3 JUNCTION BLOCK Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3A-26 - 3B-85 Always Below 1 ohms TEXT IN ILLUSTRATION *1 No. 3 Junction Block NG --> REPLACE NO. 3 JUNCTION BLOCK OK --> See step 8
- REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-393246-S17288720512011040700000)
- GO TO METER / GAUGE SYSTEM. Refer to «Speed Signal Circuit»(ref-393244-S32773047312011040700000)
This circuit is used when an incoming cellular phone voice in the "Bluetooth" hands-free system is received.
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- CHECK HARNESS AND CONNECTOR Disconnect the radio receiver assembly and stereo component amplifier assembly connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L41-11 (IVO+) - L31-23 (INT+) Always Below 1 ohms L41-12 (IVO-) - L31-22 (INT-) Always Below 1 ohms L41-11 (IVO+) - Body ground Always 10 kohms or higher L41-12 (IVO-) - Body ground Always 10 kohms or higher L41-13 (SLD) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Radio Receiver Assembly) *2 Front view of wire harness connector (to Stereo Component Amplifier Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 2
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-393251-S28380599262011040700000)
This circuit sends the microphone signal from the map light assembly (telephone microphone assembly) to the radio receiver assembly.
It also supplies power source from the radio receiver assembly to the map light assembly (telephone microphone assembly).
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- INSPECT RADIO RECEIVER ASSEMBLY Disconnect the radio receiver assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition L45-3 (MACC) - Body ground Power switch on (IG) 4 to 6 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L45-6 (SGND) - Body ground Always Below 1 ohms L45-5 (MIN-) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Radio Receiver Assembly) NG --> See step 11 OK: Go to next step
- CONFIRM MODEL Choose the model to be inspected. Result Model Proceed to w/o Sliding Roof A w/ Sliding Roof B B --> See step 6 A: Go to next step
- CHECK HARNESS AND CONNECTOR (MAP LIGHT ASSEMBLY - RADIO RECEIVER ASSEMBLY) Disconnect the radio receiver assembly connector. Disconnect the map light assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L45-1 (SNS2) - U3-2 (SNS2) Always Below 1 ohms L45-3 (MACC) - U3-5 (MACC) Always Below 1 ohms L45-2 (MIN+) - U3-4 (MCO+) Always Below 1 ohms L45-5 (MIN-) - U3-3 (MCO-) Always Below 1 ohms L45-1 (SNS2) - Body ground Always 10 kohms or higher L45-3 (MACC) - Body ground Always 10 kohms or higher L45-2 (MIN+) - Body ground Always 10 kohms or higher L45-5 (MIN-) - Body ground Always 10 kohms or higher L45-6 (SGND) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Radio Receiver Assembly) *2 Front view of wire harness connector (to Map Light Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- INSPECT MAP LIGHT ASSEMBLY Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition U3-2 (SNS2) - U3-3 (MCO-) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Map Light Assembly) NG --> See step 9 OK: Go to next step
- INSPECT MAP LIGHT ASSEMBLY Reconnect the radio receiver assembly connector. Reconnect the map light assembly connector. Turn the power switch on (ACC). Connect an oscilloscope to terminals U3-4 (MCO+) and U3-3 (MCO-) of the map light assembly connector. Check the waveform of the telephone microphone assembly using the oscilloscope. Result Result Proceed to A waveform synchronized with the voice input to the telephone microphone assembly is output A A waveform synchronized with the voice input to the telephone microphone assembly is not output B TEXT IN ILLUSTRATION *1 Component with harness connected (Map Light Assembly) B --> See step 9 A --> See step 10
- CHECK HARNESS AND CONNECTOR (MAP LIGHT ASSEMBLY - RADIO RECEIVER ASSEMBLY) Disconnect the radio receiver assembly connector. Disconnect the map light assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L45-1 (SNS2) - U13-3 (SNS2) Always Below 1 ohms L45-3 (MACC) - U13-6 (MACC) Always Below 1 ohms L45-2 (MIN+) - U13-5 (MCO+) Always Below 1 ohms L45-5 (MIN-) - U13-4 (MCO-) Always Below 1 ohms L45-1 (SNS2) - Body ground Always 10 kohms or higher L45-3 (MACC) - Body ground Always 10 kohms or higher L45-2 (MIN+) - Body ground Always 10 kohms or higher L45-5 (MIN-) - Body ground Always 10 kohms or higher L45-6 (SGND) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Radio Receiver Assembly) *2 Front view of wire harness connector (to Map Light Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- INSPECT MAP LIGHT ASSEMBLY Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition U13-3 (SNS2) - U13-4 (MCO-) Always Below 1 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Map Light Assembly) NG --> See step 9 OK: Go to next step
- INSPECT MAP LIGHT ASSEMBLY Reconnect the radio receiver assembly connector. Reconnect the map light assembly connector. Turn the power switch on (ACC). Connect an oscilloscope to terminals U13-5 (MCO+) and U13-4 (MCO-) of the map light assembly connector. Check the waveform of the telephone microphone assembly using the oscilloscope. Result Result Proceed to A waveform synchronized with the voice input to the telephone microphone assembly is output A A waveform synchronized with the voice input to the telephone microphone assembly is not output B TEXT IN ILLUSTRATION *1 Component with harness connected (Map Light Assembly) B --> See step 9 A --> See step 10
- REPLACE TELEPHONE MICROPHONE ASSEMBLY Replace the telephone microphone assembly. HINT: w/o Sliding Roof. Refer to «REMOVAL»(ref-393246-S38356004342011040700000) w/ Sliding Roof. Refer to «REMOVAL»(ref-393246-S28557189352011040700000) Check if the same malfunction recurs. Result Result Proceed to Malfunction does not recur (returns to normal) A Malfunction recurs B B --> See step 12 A --> END
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-393251-S28380599262011040700000)
- REPLACE RADIO RECEIVER ASSEMBLY. Refer to «REMOVAL»(ref-393246-S30803827762011040700000)
- REPLACE MAP LIGHT ASSEMBLY. Refer to «REMOVAL»(/toyota/prius/iii-2009-2011/remont/interiorillumination-lights/#lighting-system-interior-service-information-except-phv)
This circuit provides power to the radio receiver assembly.
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This circuit provides power to the stereo component amplifier assembly.
Scheme 136
See also:
• REMOVAL