DTC: U3000:09, 09:Er21 [AUDIO]

id0902f6441600


Without Bose®

DESCRIPTION

Audio unit internal malfunction or audio unit protection function operates
DETECTION CONDITION
•  Audio unit internal ECU (Power amplifier peripheral circuit) is faulted.
•  Audio unit protection function operates due to short to ground in speaker wiring harness and speaker lead wire
POSSIBLE CAUSE
•  Audio unit connector or terminals malfunction
•  Speaker connector or terminals malfunction
•  Open circuit in wiring harness between the following terminals:
―  Audio unit terminal 1A—Front door speaker (LH) terminal C
―  Audio unit terminal 1C—Front door speaker (LH) terminal B
―  Audio unit terminal 1D—Front door speaker (RH) terminal C
―  Audio unit terminal 1F—Front door speaker (RH) terminal B
―  Audio unit terminal 1S—Rear door speaker (LH) terminal C
―  Audio unit terminal 1U—Rear door speaker (LH) terminal B
―  Audio unit terminal 1V—Rear door speaker (RH) terminal C
―  Audio unit terminal 1X—Rear door speaker (RH) terminal B
•  Short to ground in wiring harness between the following terminals:
―  Audio unit terminal 1A—Front door speaker (LH) terminal C
―  Audio unit terminal 1C—Front door speaker (LH) terminal B
―  Audio unit terminal 1D—Front door speaker (RH) terminal C
―  Audio unit terminal 1F—Front door speaker (RH) terminal B
―  Audio unit terminal 1S—Rear door speaker (LH) terminal C
―  Audio unit terminal 1U—Rear door speaker (LH) terminal B
―  Audio unit terminal 1V—Rear door speaker (RH) terminal C
―  Audio unit terminal 1X—Rear door speaker (RH) terminal B
•  Speaker malfunction
•  Audio unit malfunction

Diagnostic Procedure

Step

Inspection

Action
1
INSPECT AUDIO UNIT CONNECTOR AND TERMINALS
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Disconnect the audio unit connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 6.
No
Go to the next step.
2
INSPECT SPEAKER CONNECTOR AND TERMINALS
•  Disconnect the speaker connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 6.
No
Go to the next step.
3
INSPECT SPEAKER CIRCUIT FOR OPEN CIRCUIT
•  Audio unit and speaker connector is disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side):
―  Audio unit terminal 1A—Front door speaker (LH) terminal C
―  Audio unit terminal 1C—Front door speaker (LH) terminal B
―  Audio unit terminal 1D—Front door speaker (RH) terminal C
―  Audio unit terminal 1F—Front door speaker (RH) terminal B
―  Audio unit terminal 1S—Rear door speaker (LH) terminal C
―  Audio unit terminal 1U—Rear door speaker (LH) terminal B
―  Audio unit terminal 1V—Rear door speaker (RH) terminal C
―  Audio unit terminal 1X—Rear door speaker (RH) terminal B
•   Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 6.
4
INSPECT SPEAKER CIRCUIT FOR SHORT TO GROUND
•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:
―  Speaker terminal C
―  Speaker terminal B
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to Step 6.
No
Go to the next step.
5
INSPECT SPEAKER
•  Switch the ignition to off.
•  Inspect the speaker.
•  Is there any malfunction?
Yes
Replace the speaker, then go to the next step.
(See FRONT DOOR SPEAKER REMOVAL/INSTALLATION.)
(See REAR DOOR SPEAKER REMOVAL/INSTALLATION.)
No
Go to the next step.
6
CONFIRM AUDIO UNIT DTC
•  Reconnect the negative battery cable.
•  Clear the DTC from the audio unit memory.
•  Perform the audio unit DTC inspection.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•   If the malfunction recurs, replace the audio unit.
Go to the next step.
No
Go to the next step.
7
VERIFY THAT NO OTHER DTCs ARE RECORDED
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [AUDIO].)
No
DTC troubleshooting completed.


With Bose®

DESCRIPTION

Audio unit internal malfunction or audio unit protection function operates
DETECTION CONDITION
•  Audio unit internal ECU (Power amplifier peripheral circuit) is faulted.
•  Audio unit protection function operates due to short to ground in speaker circuit
POSSIBLE CAUSE
•  Audio unit connector or terminals malfunction
•  Audio amplifier connector or terminals malfunction
•  Open circuit in wiring harness between the following terminals:
―  Audio unit terminal 1A—Audio amplifier terminal 1D (L.H.D.)/1F (R.H.D.)
―  Audio unit terminal 1C—Audio amplifier terminal 1C (L.H.D.)/1E (R.H.D.)
―  Audio unit terminal 1D—Audio amplifier terminal 1F (L.H.D.)/1D (R.H.D.)
―  Audio unit terminal 1F—Audio amplifier terminal 1E (L.H.D.)/1C (R.H.D.)
―  Audio unit terminal 1S—Audio amplifier terminal 1H (L.H.D.)/1J (R.H.D.)
―  Audio unit terminal 1U—Audio amplifier terminal 1G (L.H.D.)/1I (R.H.D.)
―  Audio unit terminal 1V—Audio amplifier terminal 1J (L.H.D.)/1H (R.H.D.)
―  Audio unit terminal 1X—Audio amplifier terminal 1I (L.H.D.)/1G (R.H.D.)
•  Short to ground in wiring harness between the following terminals:
―  Audio unit terminal 1A—Audio amplifier terminal 1D (L.H.D.)/1F (R.H.D.)
―  Audio unit terminal 1C—Audio amplifier terminal 1C (L.H.D.)/1E (R.H.D.)
―  Audio unit terminal 1D—Audio amplifier terminal 1F (L.H.D.)/1D (R.H.D.)
―  Audio unit terminal 1F—Audio amplifier terminal 1E (L.H.D.)/1C (R.H.D.)
―  Audio unit terminal 1S—Audio amplifier terminal 1H (L.H.D.)/1J (R.H.D.)
―  Audio unit terminal 1U—Audio amplifier terminal 1G (L.H.D.)/1I (R.H.D.)
―  Audio unit terminal 1V—Audio amplifier terminal 1J (L.H.D.)/1H (R.H.D.)
―  Audio unit terminal 1X—Audio amplifier terminal 1I (L.H.D.)/1G (R.H.D.)
•  Audio unit malfunction

Diagnostic Procedure

Step

Inspection

Action
1
INSPECT AUDIO UNIT CONNECTOR AND TERMINALS
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Disconnect the audio unit connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 5.
No
Go to the next step.
2
INSPECT AUDIO AMPLIFIER CONNECTOR AND TERMINALS
•  Disconnect the audio amplifier connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 5.
No
Go to the next step.
3
INSPECT AUDIO AMPLIFIER CIRCUIT FOR OPEN CIRCUIT
•  Audio unit and audio amplifier connector is disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side):
―  Audio unit terminal 1A—Audio amplifier terminal 1D (L.H.D.)/1F (R.H.D.)
―  Audio unit terminal 1C—Audio amplifier terminal 1C (L.H.D.)/1E (R.H.D.)
―  Audio unit terminal 1D—Audio amplifier terminal 1F (L.H.D.)/1D (R.H.D.)
―  Audio unit terminal 1F—Audio amplifier terminal 1E (L.H.D.)/1C (R.H.D.)
―  Audio unit terminal 1S—Audio amplifier terminal 1H (L.H.D.)/1J (R.H.D.)
―  Audio unit terminal 1U—Audio amplifier terminal 1G (L.H.D.)/1I (R.H.D.)
―  Audio unit terminal 1V—Audio amplifier terminal 1J (L.H.D.)/1H (R.H.D.)
―  Audio unit terminal 1X—Audio amplifier terminal 1I (L.H.D.)/1G (R.H.D.)
•   Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 5.
4
INSPECT AUDIO AMPLIFIER CIRCUIT FOR SHORT TO GROUND
•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:
―  Audio amplifier terminal 1D
―  Audio amplifier terminal 1C
―  Audio amplifier terminal 1F
―  Audio amplifier terminal 1E
―  Audio amplifier terminal 1H
―  Audio amplifier terminal 1G
―  Audio amplifier terminal 1J
―  Audio amplifier terminal 1I
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to the next step.
No
Go to the next step.
5
CONFIRM AUDIO UNIT DTC
•  Reconnect the negative battery cable.
•  Clear the DTC from the audio unit memory.
•  Perform the audio unit DTC inspection.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•   If the malfunction recurs, replace the audio unit.
Go to the next step.
No
Go to the next step.
6
VERIFY THAT NO OTHER DTCs ARE RECORDED
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [AUDIO].)
No
DTC troubleshooting completed.