DESCRIPTION
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 01-21 | A malfunction exists in ROM. | Radio receiver |
| 01-22 | A malfunction exists in RAM. |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 01-D5 *1, *3 | A device that the sub-code shows is (was) disconnected from the system when turning the engine switch on (ACC or IG). 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, *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 when the engine switch is (was) on (ACC or IG). | |
| 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 | A 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.
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 Condition | Trouble Area |
|---|---|---|
| 01-D6 *1 | When either of the following conditions is met: The device that stores (stored) the code has (had) been disconnected when the engine switch is on (ACC or IG) The master device has (had) been disconnected when this code is stored | Radio 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 *2 | When 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 engine switch on (ACC or IG), this code is stored.
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 Condition | Trouble Area |
|---|---|---|
| 01-DC | Transmission 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 |
Note. 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 Condition | Trouble Area |
|---|---|---|
| 01-DD | The device that should be the master has been disconnected after engine start | 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 |
| 01-E1 *1 | The AMP device records that the AMP output does not function even while the source device operates |
HINT
*1: Even if no fault is present, this trouble code may be stored depending on the battery condition or engine start voltage.
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 Condition | Trouble Area |
|---|---|---|
| 01-DF *1 | The 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 engine switch on (ACC or IG), this code is stored.
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 Condition | Trouble Area |
|---|---|---|
| 01-E0 | "Registration complete" signal from the master device cannot be received. | |
| 01-E3 | The 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-E4 | The multiple frame transmission is incomplete. |
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 Condition | Trouble Area |
|---|---|---|
| 01-E2 | The command for ON/OFF control from the master device has a problem. | Radio receiver |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 60-10 | AM tuner PLL (phase locked loop) synchronization is impossible. | Radio receiver |
| 60-11 | 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 |
| 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 |
|---|---|---|
| 63-10 | A mechanical error in the CD changer is detected while the CD is not being inserted or ejected. | Radio receiver |
| 63-11 | CD insertion or ejection is failed. | |
| 63-12 | CD read problem occurs. |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 63-41 | An unsuitable disc is inserted. | CD Radio receiver |
| 63-42 | The disc cannot be read. |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 63-43 | CD-ROM operation is abnormal | CD Radio receiver |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 63-44 | Operation error in the CD mechanism | Radio receiver |
| 63-48 | Excess current is present in the CD changer. | |
| 63-50 | Malfunction in insertion/ejection system |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 63-45 | Magazine cannot be ejected. | Radio receiver |
| 63-51 | Mechanical error occurs during elevator operation. | |
| 63-52 | Error occurs in CD changer clamp. |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 63-46 | Scratches or dirt is found on CD surface or CD is inserted upside down. | CD Radio receiver |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 63-47 | Sensor detects that CD unit temperature is high (Over 80 °C) | Radio receiver |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 63-78 | An error occurs during the decode process (MP3/WMA) | Radio receiver |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 63-7D | 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 |
| 63-7E | A disc with no music data is used. Playable files are not on the disc (MP3/WMA). | |
| 63-7F | A copy-protected file, which cannot be played, is used. |
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 74-40 | A short is detected in the speaker output circuit. | Wire harness Speaker Stereo component amplifier |
This circuit has a fail-safe function.
- When a short in the speaker circuit is detected, all sound outputs are stopped.
Scheme 111
Scheme 112
Scheme 113
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 114
Power is supplied to the radio receiver, integration control & panel assembly and steering pad switch assembly illumination when the light control switch is in the TAIL or HEAD position.
Scheme 115
The sound signal that has been amplified by the stereo component amplifier is sent to the speakers from the stereo component amplifier through this 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 116
Scheme 117
- CHECK HARNESS AND CONNECTOR Disconnect the connectors shown in the illustration from the stereo component amplifier and speakers. with Front Center Speaker: 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 Measure the resistance between each of the front No. 3 speakers and the stereo component amplifier 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 the front No. 3 speakers to check for an open circuit in the wire harness. Standard resistance Below 1 ohms without Front Center Speaker: 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 with Front Center Speaker: 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 without Front Center Speaker: Measure the resistance between each of the rear No. 3 speakers and the stereo component amplifier to check for an open circuit in the wire harness. Standard resistance Below 1 ohms without Front Center Speaker: Measure the resistance between each of the rear No. 2 speakers and the rear No. 3 speakers to check for an open circuit in the wire harness. Standard resistance Below 1 ohms with Front Center Speaker: Measure the resistance between each of the rear No. 2 speakers and the rear speakers to check for an open circuit in the wire harness. Standard resistance Below 1 ohms with Front Center Speaker: Measure the resistance between each of the rear stereo component speakers and the stereo component amplifier to check for an open circuit in the wire harness. Standard resistance Below 1 ohms Measure the resistance between each of the front No. 1 speakers 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 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 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
- INSPECT FRONT NO. 1 SPEAKER Resistance check. Measure the resistance between the terminals of the speaker. Standard resistance with Front Center Speaker 6 to 10 ohms without Front Center Speaker Approximately 4 ohms HINT: Perform the above inspection on both LH and RH sides. NG --> REPLACE FRONT NO. 1 SPEAKER OK: Go to next step
- 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 speakers. 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
- INSPECT FRONT NO. 3 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 speakers. 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. OK --> REPLACE FRONT NO. 3 SPEAKER NG: Go to next step
- INSPECT REAR 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 rear No. 2 speakers. 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. Perform the above inspection on both LH and RH sides. OK --> REPLACE REAR NO. 2 SPEAKER NG: Go to next step
- CONFIRM MODEL Result Result Proceed to with Front Center Speaker A without Front Center Speaker B B --> See step 11 A: Go to next step
- INSPECT REAR SPEAKER Check that the malfunction disappears when another speaker in good condition is installed. Standard Malfunction disappears. HINT: Connect all the connectors to the rear speakers. 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. Perform the above inspection on both LH and RH sides. OK --> REPLACE REAR SPEAKER NG: Go to next step
- INSPECT REAR STEREO COMPONENT 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 stereo component speakers. 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. Perform the above inspection on both LH and RH sides. OK --> REPLACE REAR STEREO COMPONENT SPEAKER NG: Go to next step
- INSPECT FRONT STEREO COMPONENT SPEAKER Resistance check. Measure the resistance between the terminals of the speaker. Standard resistance 7 to 9 ohms NG --> REPLACE FRONT STEREO COMPONENT SPEAKER OK: Go to next step
- 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 Condition Specified condition 3 - 4 Always 7 to 8.6 ohms NG --> REPLACE WOOFER BOX SPEAKER OK --> PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-387469-S35495030182011022400000)
- INSPECT REAR NO. 3 SPEAKER Check that the malfunction disappears when another speaker in good condition is installed. Standard Malfunction disappears. HINT: Connect all the connectors to the rear No. 3 speakers. When there is a possibility that either the right or left rear No. 3 speaker is detective, inspect by interchanging the right one with the left one. Perform the above inspection of both LH or RH sides. OK --> REPLACE REAR NO. 3 SPEAKER NG: Go to next step
- INSPECT REAR SPEAKER Resistance check. Measure the resistance according to the value(s) in the table below. Standard resistance Approximately 4 ohms HINT: Perform the above inspection on both LH and RH sides. NG --> REPLACE REAR SPEAKER OK: Go to next step
- 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 Condition Specified condition 1 - 3 Always Approximately 2 ohms 2 - 4 Always Approximately 2 ohms NG --> REPLACE WOOFER BOX SPEAKER OK --> PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-387469-S35495030182011022400000)
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 118
Scheme 119
- 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 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-387469-S35495030182011022400000)
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, 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 120
Scheme 121
- 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 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-387469-S35495030182011022400000)
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 122
Scheme 123
Scheme 124
Scheme 125
- INSPECT STEREO COMPONENT AMPLIFIER Measure the voltage according to the value(s) in the table below. Standard voltage Tester connection Condition Specified condition MUTE - Body ground Turn engine switch on (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-387469-S35495030182011022400000) NG: Go to next step
- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO COMPONENT AMPLIFIER) Disconnect the radio receiver connector J66 and stereo component amplifier connector P30. Measure the resistance according to the values in the table below. Standard resistance 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
- INSPECT STEREO COMPONENT AMPLIFIER Reconnect the stereo component amplifier connector P30. Measure the voltage according to the value(s) in the table below. Standard voltage Tester connection Condition Specified condition MUTE - Body ground Turn engine switch on (ACC), Audio system is playing Above 3.5 V NG --> REPLACE STEREO COMPONENT AMPLIFIER OK --> 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.
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
- 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.
- If a short occurs in an ECU, all systems in the diagram below will not operate normally.
Scheme 126
Scheme 127
Scheme 128
Scheme 129
- 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
- INSPECT STEREO COMPONENT AMPLIFIER Disconnect the stereo component amplifier connector P30. Measure the voltage. Jack up either one of the drive wheels. Move the shift lever to the neutral position. Turn the engine switch on (IG). 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 --> See step 3 OK --> REPLACE STEREO COMPONENT AMPLIFIER
- CHECK HARNESS AND CONNECTOR (COMBINATION METER - STEREO COMPONENT AMPLIFIER) Disconnect the stereo component amplifier connector P30 and combination meter connector J34. Measure the resistance according to the value(s) in the table below. Standard resistance Tester connection Condition Specified condition SPD - +S Engine switch off Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK HARNESS AND CONNECTOR (COMBINATION METER - STEREO COMPONENT AMPLIFIER) Disconnect the stereo component amplifier connector P30 and combination meter connector J34. Measure the resistance according to the value(s) in the table below. Standard resistance Tester connection Condition Specified condition SPD - Body ground Engine 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
The radio receiver sends only DVD 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, only DVD sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier or speakers.
Scheme 130
Scheme 131
- 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 Tester connection Condition Specified condition DVD - DVD Always Below 1 ohms DVD - 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-387469-S35495030182011022400000)
Scheme 132
- 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 shown in the illustration. For details of the DTC display, refer to "DTC CHECK/CLEAR". Refer to «DTC CHECK / CLEAR»(ref-387469-S27138033392011022400000) . NEXT: Go to next step
- 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: Component Proceed to Integration control & panel assembly (1D8) Integration control & panel assembly power source circuit. Refer to «Integration Control and Panel Assembly Power Source Circuit»(ref-387470-S29050375752011022400000) Stereo component amplifier (440) Stereo component amplifier power source circuit. Refer to «Stereo Component Amplifier Power Source Circuit»(ref-387470-S32940667872011022400000) Radio receiver (190) Radio receiver power source circuit. Refer to «Radio Receiver Power Source Circuit»(ref-387470-S13165570202011022400000) NEXT: Go to next step
- INSPECT RADIO RECEIVER Disconnect the radio receiver connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition ATX+ - ATX- Always 60 to 80 ohms TXM+ - TXM- Always 60 to 80 ohms TX+ - TX- Always 60 to 80 ohms NG --> REPLACE RADIO RECEIVER OK: Go to next step
- CHECK HARNESS AND CONNECTOR (GATEWAY ECU - 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 the "TERMINALS OF ECU". Refer to «TERMINALS OF ECU»(ref-387469-S02295999392011022400000) . Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the gateway ECU and the component shown by the sub-code. Disconnect all connectors between the gateway ECU and the component shown by sub-code. Check for an open or short in the AVC-LAN circuit between the gateway ECU 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
- 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 GATEWAY ECU OK --> END
This circuit provides power to the radio receiver.
Scheme 133
Scheme 134
- INSPECT RADIO RECEIVER Disconnect the radio receiver connector J66. Measure the resistance according to the value in the table below. Standard 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 Tester connection Condition Specified condition B - GND Always 10 to 14 V ACC - GND Engine switch on (ACC) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-387469-S35495030182011022400000)
This circuit provides power to the stereo component amplifier.
Scheme 135
Scheme 136
- INSPECT STEREO COMPONENT AMPLIFIER Disconnect the stereo component amplifier connectors. Measure the resistance according to the values in the table below. Standard 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 Tester connection Condition Specified condition +B - GND Always 10 to 14 V +B2 - GND Always 10 to 14 V ACC - GND Engine switch on (ACC) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-387469-S35495030182011022400000)
This is the power source circuit to operate the gateway ECU.
Scheme 137
Scheme 138
- INSPECT GATEWAY ECU Disconnect the gateway ECU connector J76. Measure the resistance according to the value(s) in the table below. Standard resistance Tester connection Condition Specified condition GND - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard voltage Tester connection Condition Specified condition BATT - GND Always 10 to 14 V ACC - GND Engine switch on (ACC) 10 to 14 V IG - GND Engine switch on (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-387469-S35495030182011022400000)
This is the power source circuit to operate the integration control & panel assembly.
Scheme 139
Scheme 140
- INSPECT INTEGRATION CONTROL & PANEL ASSEMBLY Disconnect the integration control & panel assembly connector J54. Measure the resistance according to the value(s) in the table below. Standard resistance Tester connection Condition Specified condition E - Body ground Always Below 1 ohms Measure the voltage according to the value(s) in the table below. Standard voltage Tester connection Condition Specified condition B - E Always 10 to 14 V ACC - E Engine SW on (ACC) 10 to 14 V IG+ - E Engine SW on (IG) 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-387469-S35495030182011022400000)