DTC INSPECTION [AUDIO]

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Caution
•  If the battery is disconnected or the audio unit power supply is cut, input all of the displayed DTCs to the Audio Repair Order Form because the DTCs will be cleared.(When using the M-MDS)
Note
•  For the DTC inspection of the audio unit, there is a method using the M-MDS and one that does not (on-board diagnostic test mode). Because the DTCs differ if using or not using the M-MDS, perform the DTC inspection using the M-MDS method and the method not using it.
•  If a DTC inspection is performed, perform a communication inspection simultaneously to verify if there is a communication error.

When using the M-MDS

CMDTC self test
1.  Connect the M-MDS to the DLC-2.
2.  After vehicle identification, select the following from the M-MDS initialization screen.
1.  “Self-test”
2.  “All CMDTCs”
3.  Verify the DTC according to the directions on the screen.
•  If a DTC is displayed, repair the malfunctioning part according to the applicable DTC troubleshooting.(See DTC TABLE [AUDIO].)
ODDTC self test
1.  Connect the M-MDS to the DLC-2.
2.  After vehicle identification, select the following from the M-MDS initialization screen.
1.  “Self-test”
2.  “Module”
3.  “ACU”
3.  Verify the DTC according to the directions on the screen.
•  If a DTC is displayed, repair the malfunctioning part according to the applicable DTC troubleshooting.(See DTC TABLE [AUDIO].)

Not using M-MDS (on-board diagnostic test mode)

1.  Turn the ignition switch to the ACC or ON position.

2.  Verify that the audio is turned off. If the audio is turned on, press the POWER/VOLUME button to turn it off.

3.  Press the POWER/VOLUME button and SETUP button simultaneously to launch the on-board diagnostic test mode.

With RDS (radio data system)

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Without RDS (radio data system)

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4.  Verify that the launched on-board diagnostic test mode is displayed on the screen.

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5.  Select AVC ERROR RECORD.

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6.  If several DTCs are in the memory, they can be displayed using the UP button/DOWN button.

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7.  Complete the on-board diagnostic test mode by pressing the POWER/VOLUME button to return to the on-board diagnostic mode screen and pressing the POWER/VOLUME button again, or by switching the ignition off.


Communication Inspection


Communication inspection between audio unit and audio panel

Step

Inspection

Action
1
•  The ignition is switched to ACC or ON (engine off or on).
•  Turn the audio unit power on.
•  Verify that the audio unit screen changes by pressing the audio unit switch.
•  Does the audio unit screen change?
Yes
System is normal.
No
If the audio unit screen does not change, replace the audio unit.
(See AUDIO UNIT REMOVAL/INSTALLATION.)


Communication inspection between audio unit and instrument cluster

Step

Inspection

Action
1
•  The ignition is switched to ACC or ON (engine off or on).
•  Activate the input/output check mode for information display.
•  Are the following DTCs present?
―  02:1E (with clock display)/02 1E (without clock display)
―  02:3E (with clock display)/02 3E (without clock display)
Yes
Perform the “DETERMINING MALFUNCTIONING PART (MS-CAN)[MULTIPLEX COMMUNICATION SYSTEM]” to repair the malfunctioning part.
(See DETERMINING MALFUNCTIONING PART (MS-CAN) [MULTIPLEX COMMUNICATION SYSTEM (L.H.D.)].)
(See DETERMINING MALFUNCTIONING PART (MS-CAN) [MULTIPLEX COMMUNICATION SYSTEM (R.H.D.)].)
No
System is normal.


Communication inspection between audio unit and Bluetooth unit

Step

Inspection

Action
1
•  The ignition is switched to ACC or ON (engine off or on).
•  Turn the audio unit power on.
•  Verify that the audio unit screen changes to the Bluetooth screen by pressing the pick-up button of the steering switch.
•  Does the screen change to the Bluetooth screen?
Yes
System is normal.
No
If the audio unit screen does not change, perform the “DTC: U0197:00, 28:Er81 [Bluetooth system (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)]” to repair the malfunctioning part.
(See DTC: U0197:00, 26:Er81 [Bluetooth SYSTEM (HANDS-FREE TELEPHONE (HF/TEL) SYSTEM)].)