Audio / Video System (Diagnostic Codes & Symptom Tests): Overview Toyota Matrix E140

DESCRIPTION

HINT

1. *1: Even if no fault is present, these DTCs may be stored depending on the battery condition or engine start voltage.
2. *2: If the power connector is disconnected after the engine was started, this DTC is stored after 180 seconds.
3. *3: If the device is reported as not existing during verification, check the power source circuit and AVC-LAN circuit for the device.
4. *4: This DTC may be stored if the engine is started and the ignition switch is turned to 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 DTCs after the inspection is completed to confirm that no DTCs are output.

HINT

1. *1: Even if no fault is present, this DTC may be stored depending on the battery condition or engine start voltage.
2. *2: When 210 seconds have elapsed after disconnecting the power supply connector of the master component with the ignition switch to ON 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 DTCs after the inspection is completed to confirm that no DTCs are output.

HINT

If the ignition switch is turned off after idling for 60 seconds, this DTC may be stored when the engine is started again (key type ignition switch only).

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 DTCs after the inspection is completed to confirm that no DTCs are output.

HINT

1. *1: If the ignition switch is turned off after idling for 60 seconds, this DTC may be stored when the engine is started again.

1. *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 DTCs after the inspection is completed to confirm that no DTCs are output.

HINT

*1: When 210 seconds have elapsed after disconnecting the power supply connector of the master component with the ignition switch to ON 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 DTCs after the inspection is completed to confirm that no DTCs are output.

HINT

Even if no fault is present, these DTCs may be stored depending on the battery condition or engine start voltage.

Scheme 77

Scheme 78

Scheme 79

1. REPLACE USB DEVICE OR "iPod" Disconnect the USB device or "iPod" from the No. 1 stereo jack adapter assembly. Turn the ignition switch off. HINT: When this DTC has been stored, it is necessary to turn off the ignition switch to make it possible for the vehicle to recognize a new device when it is connected. Turn the ignition switch to ACC. Connect a known good USB device or "iPod" to the No. 1 stereo jack adapter assembly. NEXT: Go to next step
2. CLEAR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-427548-S17065994922011101200000). NEXT: Go to next step
3. RECHECK FOR DTC Recheck for DTCs and check if the same DTC is output again. HINT: If DTCs are detected frequently, replace the multi-media interface ECU. OK No DTCs are output. NG --> See step 4 OK --> USB DEVICE OR "iPod" WAS DEFECTIVE
4. INSPECT MULTI-MEDIA INTERFACE ECU Disconnect the No. 1 stereo jack adapter assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition E80-1 (UPI) - E80-4 (UJSG) Ignition switch ACC 5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to No. 1 Stereo Jack Adapter Assembly) NG --> See step 6 OK --> See step 5
5. REPLACE NO. 1 STEREO JACK ADAPTER ASSEMBLY. Refer to «REMOVAL»(ref-427547-S34655371742011101200000)
6. CHECK HARNESS AND CONNECTOR Disconnect the multi-media interface ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E82-4 (UPO) - E80-1 (UPI) Always Below 1 ohms E82-1 (UESG) - E80-4 (UJSG) Always Below 1 ohms E80-1 (UPI) - Body ground Always 10 kohms or higher E80-4 (UJSG) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to No. 1 Stereo Jack Adapter Assembly) *b Front view of wire harness connector (to Multi-media Interface ECU) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
7. REPLACE MULTI-MEDIA INTERFACE ECU. Refer to «REMOVAL»(ref-427547-S10576678832011101200000)

This circuit provides power to the multi-media interface ECU.

Scheme 80

for Automatic Sound Levelizer (ASL)

1. This circuit is necessary for the Automatic Sound Levelizer (ASL) built into the radio receiver assembly. The Automatic Sound Levelizer (ASL) function automatically adjusts the audio system volume level in order to compensate for increased vehicle noise (vehicle noise tends to increase as vehicle speed increases). The ASL adjusts the volume level based upon vehicle speed signals that it receives from the combination meter assembly.

for "Bluetooth"

1. Speed signals are received from the combination meter assembly and used to cancel "Bluetooth" function operation. The radio receiver assembly recognizes that the vehicle is being driven and makes it impossible to connect or register a "Bluetooth" device while driving.

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 any of the ECUs or in the wire harness connected to an ECU, all systems in the diagram below will not operate normally.

Scheme 81

Scheme 82

1. for 2ZR-FE
2. for 2AZ-FE

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

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 when a switch is continuously depressed occurs.

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

Scheme 83

Power is supplied to the radio receiver assembly and steering pad switch illumination when the light control switch is in the tail or head position.

Scheme 84

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.

Scheme 85

Scheme 86

1. for 6 Speakers
2. for 4 Speakers

Scheme 87

Scheme 88

1. CHECK HARNESS AND CONNECTOR Disconnect the connectors from the radio receiver assembly and the speakers. for 6 Speakers: Measure the resistance between each of the front No. 2 speaker assemblies and the radio receiver assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition E1-2 (FL+) - I4-4 (+) Always Below 1 ohms E1-6 (FL-) - I4-2 (-) Always Below 1 ohms E1-1 (FR+) - H4-4 (+) Always Below 1 ohms E1-5 (FR-) - H4-2 (-) Always Below 1 ohms for 6 Speakers: Measure the resistance between each of the front No. 1 speaker assemblies and the front No. 2 speaker assemblies to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition I4-3 (TWL+) - I1-1 Always Below 1 ohms I4-1 (TWL-) - I1-2 Always Below 1 ohms H4-3 (TWR+) - H1-1 Always Below 1 ohms H4-1 (TWR-) - H1-2 Always Below 1 ohms for 4 Speakers: Measure the resistance between each of the front No. 1 speaker assemblies and the radio receiver assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition E1-2 (FL+) - I1-1 Always Below 1 ohms E1-6 (FL-) - I1-2 Always Below 1 ohms E1-1 (FR+) - H1-1 Always Below 1 ohms E1-5 (FR-) - H1-2 Always Below 1 ohms Measure the resistance between each of the rear speaker assemblies and the radio receiver assembly to check for an open circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition E2-2 (RL+) - K2-1 Always Below 1 ohms E2-6 (RL-) - K2-2 Always Below 1 ohms E2-1 (RR+) - J2-1 Always Below 1 ohms E2-3 (RR-) - J2-2 Always Below 1 ohms Measure the resistance between each speaker and body ground to check for a short circuit in the wire harness. Standard Resistance Tester Connection Condition Specified Condition E1-2 (FL+) - Body ground Always 10 kohms or higher E1-6 (FL-) - Body ground Always 10 kohms or higher E1-1 (FR+) - Body ground Always 10 kohms or higher E1-5 (FR-) - Body ground Always 10 kohms or higher E2-2 (RL+) - Body ground Always 10 kohms or higher E2-6 (RL-) - Body ground Always 10 kohms or higher E2-1 (RR+) - Body ground Always 10 kohms or higher E2-3 (RR-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. INSPECT FRONT NO. 1 SPEAKER ASSEMBLY Resistance check Measure the resistance between the terminals of the speaker. Standard Resistance Tester Connection Condition Specified Condition I1-1 - I1-2 Always 3.2 to 4.8 ohms H1-1 - H1-2 Always 3.2 to 4.8 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Front No. 1 Speaker Assembly) Proceed to the next step based on the inspection result. Result Result Proceed to OK (for 6 Speakers) A OK (for 4 Speakers) B NG C B --> See step 4 C --> See step 6 A: Go to next step
3. REPLACE FRONT NO. 2 SPEAKER ASSEMBLY Check that the malfunction disappears when a known good speaker is installed. Refer to «REMOVAL»(ref-427547-S04889206532011101200000). OK Malfunction disappears. HINT: Connect all the connectors to the front No. 2 speaker assemblies that were disconnected. If 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. NG --> See step 4 OK --> END (FRONT NO. 2 SPEAKER ASSEMBLY WAS DEFECTIVE)
4. INSPECT REAR SPEAKER ASSEMBLY Resistance check Measure the resistance between the terminals of the speaker. Standard Resistance Tester Connection Condition Specified Condition K2-1 - K2-2 Always 3.2 to 4.8 ohms J2-1 - J2-2 Always 3.2 to 4.8 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Rear Speaker Assembly) NG --> See step 7 OK --> See step 5
5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-427548-S41617880962011101200000)
6. REPLACE FRONT NO. 1 SPEAKER ASSEMBLY. Refer to «REMOVAL»(ref-427547-S04889206532011101200000)
7. REPLACE REAR SPEAKER ASSEMBLY. Refer to «REMOVAL»(ref-427547-S07393359202011101200000)

The multi-media interface ECU sends the sound signal to the radio receiver assembly through this circuit.

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 radio receiver assembly or speakers.

Scheme 89

The No. 1 stereo jack adapter assembly sends the 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 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 radio receiver assembly or speakers.

Scheme 90

Scheme 91

1. w/o USB Audio System
2. w/ USB Audio System

Scheme 92

1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - 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 W/O USB AUDIO SYSTEM Tester Connection Condition Specified Condition E38-4 (AUXO) - E32-19 (AUXI) Always Below 1 ohms E38-3 (ASGN) - E32-16 (ASGN) Always Below 1 ohms E38-2 (ARO) - E32-15 (ARI) Always Below 1 ohms E38-1 (ALO) - E32-17 (ALI) Always Below 1 ohms E38-5 (AGND) - E32-18 (AGND) Always Below 1 ohms E38-4 (AUXO) - Body ground Always 10 kohms or higher E38-3 (ASGN) - Body ground Always 10 kohms or higher E38-2 (ARO) - Body ground Always 10 kohms or higher E38-1 (ALO) - Body ground Always 10 kohms or higher E38-5 (AGND) - Body ground Always 10 kohms or higher W/ USB AUDIO SYSTEM Tester Connection Condition Specified Condition E80-9 (AUXO) - E32-19 (AUXI) Always Below 1 ohms E80-8 (ASGN) - E32-16 (ASGN) Always Below 1 ohms E80-6 (ARO) - E32-15 (ARI) Always Below 1 ohms E80-7 (ALO) - E32-17 (ALI) Always Below 1 ohms E80-10 (AGND) - E32-18 (AGND) Always Below 1 ohms E80-9 (AUXO) - Body ground Always 10 kohms or higher E80-8 (ASGN) - Body ground Always 10 kohms or higher E80-6 (ARO) - Body ground Always 10 kohms or higher E80-7 (ALO) - Body ground Always 10 kohms or higher E80-10 (AGND) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *A w/o USB Audio System *B w/ USB Audio System *a Front view of wire harness connector (to Radio Receiver Assembly) *b Front view of wire harness connector (to No. 1 Stereo Jack Adapter Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 2
2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-427548-S41617880962011101200000)

The No. 1 stereo jack adapter assembly sends the sound data from an external device to the multi-media interface ECU through this circuit.

Scheme 93

Scheme 94

Scheme 95

1. CHECK HARNESS AND CONNECTOR Disconnect the multi-media interface ECU connector. Disconnect the No. 1 stereo jack adapter assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition E80-3 (UDO+) - E82-2 (UDI+) Always Below 1 ohms E80-2 (UDO-) - E82-3 (UDI-) Always Below 1 ohms E80-5 (UJSS) - E82-5 (UESS) Always Below 1 ohms E80-3 (UDO+) - Body ground Always 10 kohms or higher E80-2 (UDO-) - Body ground Always 10 kohms or higher E80-5 (UJSS) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Multi-media Interface ECU) *b Front view of wire harness connector (to No. 1 Stereo Jack Adapter Assembly) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 2
2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN «PROBLEM SYMPTOMS TABLE»(ref-427548-S41617880962011101200000)

The multi-media interface ECU sends a mute signal to the radio receiver assembly.

The radio receiver assembly controls the volume according to the mute signal from the multi-media interface ECU.

The mute signal is sent to reduce noise and popping sounds generated when switching modes.

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 assembly is functioning, no sound, or only an extremely faint sound, can be heard.

Scheme 96

Each audio system component connected to the AVC-LAN (communication bus) transfers switch signals using the audio visual communication local area network.

If a short to +B or short to ground occurs in the AVC-LAN, the audio system will not function normally because communication is not possible.

This circuit sends the voice signal from the map light assembly (telephone microphone assembly) to the radio receiver assembly.

It also supplies power from the radio receiver assembly to the map light assembly (telephone microphone assembly).

Scheme 97

This circuit provides power to the radio receiver assembly.

Scheme 98

See also:
• REMOVAL