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

id0902f6441600

Without Bose®

Description | Audio unit internal malfunction
--- | ---
Detection condition | • Audio unit (circuit around power amplifier) malfunction detected • Audio unit protection function operates due to short to ground in speaker wiring harness and speaker lead wire
Possible cause | • Audio unit connector or terminal malfunction • Speaker connector or terminal malfunction • Open circuit in wiring harness between the following terminals: ― Audio unit terminal 1A and front door speaker (LH) terminal B ― Audio unit terminal 1C and front door speaker (LH) terminal A ― Audio unit terminal 1D and front door speaker (RH) terminal B ― Audio unit terminal 1F and front door speaker (RH) terminal A ― Audio unit terminal 1S and rear door speaker (LH) terminal B ― Audio unit terminal 1U and rear door speaker (LH) terminal A ― Audio unit terminal 1V and rear door speaker (RH) terminal B ― Audio unit terminal 1X and rear door speaker (RH) terminal A • Short to ground in wiring harness between the following terminals: ― Audio unit terminal 1A and front door speaker (LH) terminal B ― Audio unit terminal 1C and front door speaker (LH) terminal A ― Audio unit terminal 1D and front door speaker (RH) terminal B ― Audio unit terminal 1F and front door speaker (RH) terminal A ― Audio unit terminal 1S and rear door speaker (LH) terminal B ― Audio unit terminal 1U and rear door speaker (LH) terminal A ― Audio unit terminal 1V and rear door speaker (RH) terminal B ― Audio unit terminal 1X and rear door speaker (RH) terminal A • Speaker malfunction • Audio unit malfunction

Diagnostic Procedure

Step | Inspection | Action
--- | --- | ---
1 | INSPECT AUDIO UNIT CONNECTOR CONDITION • Turn the ignition switch to the OFF position. • Disconnect the negative battery cable. • Disconnect the audio unit connector. • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is there any malfunctioning part? | Yes | Repair or replace the connector, then go to Step 6.
No | Go to the next step.
2 | INSPECT SPEAKER CONNECTOR CONDITION • Disconnect the speaker connector. • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is there any malfunctioning part? | Yes | Repair or replace the connector, then go to Step 6.
No | Go to the next step.
3 | INSPECT SPEAKER CIRCUIT FOR OPEN CIRCUIT • Audio unit connector and speaker connector are disconnected. • Inspect for continuity between the following terminals (vehicle wiring harness). ― Audio unit terminal 1A and front door speaker (LH) terminal B ― Audio unit terminal 1C and front door speaker (LH) terminal A ― Audio unit terminal 1D and front door speaker (RH) terminal B ― Audio unit terminal 1F and front door speaker (RH) terminal A ― Audio unit terminal 1S and rear door speaker (LH) terminal B ― Audio unit terminal 1U and rear door speaker (LH) terminal A ― Audio unit terminal 1V and rear door speaker (RH) terminal B ― Audio unit terminal 1X and rear door speaker (RH) terminal A • Is there continuity? | Yes | Go to the next step.
No | Repair or replace the wiring harness, then go to Step 6.
4 | INSPECT SPEAKER CIRCUIT FOR SHORT TO GROUND • Inspect for continuity between the following wiring harness terminals (vehicle wiring harness side) and body ground. ― Speaker terminal B ― Speaker terminal A • Is there continuity? | Yes | Repair or replace the wiring harness, then go to Step 6.
No | Go to the next step.
5 | INSPECT SPEAKERS • Inspect the speakers. (See FRONT DOOR SPEAKER INSPECTION.) (See REAR DOOR SPEAKER INSPECTION.) • Is there any malfunctioning part? | Yes | Replace the speaker, then go to Step 6. (See FRONT DOOR SPEAKER REMOVAL/INSTALLATION.) (See REAR DOOR SPEAKER REMOVAL/INSTALLATION.)
No | Go to the next step.
6 | VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Reconnect all the disconnected connectors. • Connect the negative battery cable. • Clear the audio unit DTCs. (See CLEARING DTC [AUDIO].) • Perform the audio unit DTC inspection. (See DTC INSPECTION [AUDIO].) • Is the same DTC displayed? | Yes | Return to Step 1 and inspect for other possible causes. If the malfunction recurs, replace the audio unit, then go to the next step. (See AUDIO UNIT REMOVAL/INSTALLATION.)
No | Go to the next step.
7 | VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed? | Yes | Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [AUDIO].)
No | DTC troubleshooting completed.

With Bose®

Description | Audio unit internal malfunction
--- | ---
Detection condition | • Audio unit (circuit around power amplifier) malfunction detected • Audio unit protection function operates due to short to ground in speaker wiring harness and speaker lead wire
Possible cause | • Audio unit connector or terminal malfunction • Speaker connector or terminal malfunction • Open circuit in wiring harness between the following terminals: ― Audio unit terminal 1A and audio amplifier terminal 2L ― Audio unit terminal 1C and audio amplifier terminal 2J ― Audio unit terminal 1D and audio amplifier terminal 2K ― Audio unit terminal 1F and audio amplifier terminal 2I ― Audio unit terminal 1S and audio amplifier terminal 5L ― Audio unit terminal 1U and audio amplifier terminal 5J ― Audio unit terminal 1V and audio amplifier terminal 5K ― Audio unit terminal 1X and audio amplifier terminal 5I • Short to ground in wiring harness between the following terminals: ― Audio unit terminal 1A and audio amplifier terminal 2L ― Audio unit terminal 1C and audio amplifier terminal 2J ― Audio unit terminal 1D and audio amplifier terminal 2K ― Audio unit terminal 1F and audio amplifier terminal 2I ― Audio unit terminal 1S and audio amplifier terminal 5L ― Audio unit terminal 1U and audio amplifier terminal 5J ― Audio unit terminal 1V and audio amplifier terminal 5K ― Audio unit terminal 1X and audio amplifier terminal 5I • Speaker malfunction • Audio unit malfunction

Diagnostic Procedure

Step | Inspection | Action
--- | --- | ---
1 | INSPECT AUDIO UNIT CONNECTOR CONDITION • Turn the ignition switch to the OFF position. • Disconnect the negative battery cable. • Disconnect the audio unit connector. • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is there any malfunctioning part? | Yes | Repair or replace the connector, then go to Step 5.
No | Go to the next step.
2 | INSPECT AUDIO AMPLIFIER CONNECTOR CONDITION • Disconnect the audio amplifier connector. • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is there any malfunctioning part? | Yes | Repair or replace the connector, then go to Step 5.
No | Go to the next step.
3 | INSPECT AUDIO AMPLIFIER CIRCUIT FOR OPEN CIRCUIT • Audio unit connector and audio amplifier connector are disconnected. • Inspect for continuity between the following terminals (vehicle wiring harness). ― Audio amplifier terminal 2L ― Audio amplifier terminal 2J ― Audio amplifier terminal 2K ― Audio amplifier terminal 2I ― Audio amplifier terminal 5L ― Audio amplifier terminal 5J ― Audio amplifier terminal 5K ― Audio amplifier terminal 5I • Is there continuity? | Yes | Go to the next step.
No | Repair or replace the wiring harness, then go to Step 5.
4 | INSPECT AUDIO AMPLIFIER CIRCUIT FOR SHORT TO GROUND • Inspect for continuity between the following wiring harness terminals (vehicle wiring harness side) and body ground. ― Audio amplifier terminal 2L ― Audio amplifier terminal 2J ― Audio amplifier terminal 2K ― Audio amplifier terminal 2I ― Audio amplifier terminal 5L ― Audio amplifier terminal 5J ― Audio amplifier terminal 5K ― Audio amplifier terminal 5I • Is there continuity? | Yes | Repair or replace the wiring harness, then go to Step 5.
No | Go to the next step.
5 | VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Reconnect all the disconnected connectors. • Connect the negative battery cable. • Clear the audio unit DTCs. (See CLEARING DTC [AUDIO].) • Perform the audio unit DTC inspection. (See DTC INSPECTION [AUDIO].) • Is the same DTC displayed? | Yes | Return to Step 1 and inspect for other possible causes. If the malfunction recurs, replace the audio unit, then go to the next step. (See AUDIO UNIT REMOVAL/INSTALLATION.)
No | Go to the next step.
6 | VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed? | Yes | Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [AUDIO].)
No | DTC troubleshooting completed.