Possible DTC

Sound jumps

Using the M-MDS

B1188:64

Without using M-MDS (On-board diagnostic test mode)

10:Er07

Possible cause

• Electronic jamming from outside, or inferior condition of broadcasting station radio wave

• Defective CD (e.g., cracked, badly bent, rough edges, scratch, dirty CD, condensation)

• Vibration while vehicle is driven

• Speaker muted by Bluetooth system (hands-free telephone (HF/TEL) system) operation (with Bluetooth system)

• Open or short circuit in wiring harness between audio amplifier and audio unit

• Short circuit inside speaker

• Speaker malfunction

• Mis-operation of steering switches

• Audio unit malfunction

NOTE:

• The CD may be malfunctioning if the sound jumps on the certain CD only. Inspect the CD player/changer operation using the CD known to be good.

STEP

INSPECTION

ACTION

1

• Does the sound jump only while in the radio mode?

Yes

Go to the next step.

No

Go to Step 5.

2

• Does noise occur?

Yes

Go to the next step.

No

Replace the audio unit.

(See AUDIO UNIT REMOVAL/INSTALLATION.)

3

• Can the location where the sound jumps be specified?

Yes

The system is normal. Explain to the customer that the noise is caused by radio wave disturbances or broadcast wave conditions from the outside.

No

Go to the next step.

4

• Can the broadcast where the sound jumps be specified?

Yes

Explain to the customer that the cause is poor broadcast reception conditions.

No

Replace the audio unit.

(See AUDIO UNIT REMOVAL/INSTALLATION.)

5

• Does the sound jump only while in the CD mode?

Yes

Go to the next step.

No

Go to Step 8.

6

• Can the disc in which the sound jump occurs be specified?

Yes

The system is normal. Explain to the customer that the cause is a disc that is damaged or dirty on the playback side, or warped.

No

Go to the next step.

7

• Drive the vehicle and verify the malfunction symptom.

• Does noise occur while driving on an unlevel road or under other driving conditions (sudden curve, quick operation)?

Yes

The system is normal. Explain to the customer that the cause is vibration while the vehicle is driven.

No

Replace the audio unit.

(See AUDIO UNIT REMOVAL/INSTALLATION.)

8

• Does the sound jump using the specified speaker?

Yes

Without Bose®

• Go to the next step.

With Bose®

• Go to Step 10

No

With Bluetooth system

• Go to Step 13.

Without Bluetooth system

• Go to Step 14.

9

• Disconnect the speaker connector and inspect the resistance of speaker.

• Inspect the continuity between the audio unit wiring harness-side connector terminal and speaker wiring harness-side connector:

Audio unit—front door speaker

• Terminal 1A (LH+)—terminal C

• Terminal 1C (LH-)—terminal B

• Terminal 1D (RH+)—terminal C

• Terminal 1F (RH-)—terminal B

Audio unit—rear door speaker

• Terminal 1S (LH+)—terminal C

• Terminal 1U (LH-)—terminal B

• Terminal 1V (RH+)—terminal C

• Terminal 1X (RH-)—terminal B

Yes

Go to Step 12.

No

Repair or replace the suspect wiring harness or speaker.

10

• Disconnect the audio amplifier connector.

• Inspect continuity between the following terminals of the audio amplifier connector and speaker connector.

For front door speaker (LH)

• Terminal 3C—Terminal C

• Terminal 3D—Terminal B

For front door speaker (RH)

• Terminal 3E—Terminal C

• Terminal 3F—Terminal B

For tweeter (LH)

• Terminal 2E—Terminal B

• Terminal 2C—Terminal A

For tweeter (RH)

• Terminal 2M—Terminal B

• Terminal 2K—Terminal A

For rear door speaker (LH)

• Terminal 3H—Terminal C

• Terminal 3G—Terminal B

For rear door speaker (RH)

• Terminal 2A—Terminal C

• Terminal 2B—Terminal B

For front center speaker

• Terminal 2G—Terminal B

• Terminal 2I—Terminal A

For front side speaker (LH)

• Terminal 2E—Terminal B

• Terminal 2C—Terminal A

For front side speaker (RH)

• Terminal 2M—Terminal B

• Terminal 2K—Terminal A

For rear speaker

• Terminal 2O—Terminal B

• Terminal 2P—Terminal A

• Is there continuity?

Yes

Go to the next step.

No

Repair or replace the repair related wiring harnesses.

11

• Disconnect the audio amplifier connector.

• Inspect the continuity between the audio amplifier connector and ground:

For front door speaker (LH)

• Terminal 3C—GND

• Terminal 3D—GND

For front door speaker (RH)

• Terminal 3E—GND

• Terminal 3F—GND

For tweeter (LH)

• Terminal 2E—GND

• Terminal 2C —GND

For tweeter (RH)

• Terminal 2M—GND

• Terminal 2K—GND

For rear door speaker (LH)

• Terminal 3H—GND

• Terminal 3G—GND

For rear door speaker (RH)

• Terminal 2A—GND

• Terminal 2B—GND

For front center speaker

• Terminal 2G—GND

• Terminal 2I—GND

For front side speaker (LH)

• Terminal 2E—GND

• Terminal 2C—GND

For front side speaker (RH)

• Terminal 2M—GND

• Terminal 2K—GND

For rear speaker

• Terminal 2O—GND

• Terminal 2P—GND

• Is there continuity?

Yes

Repair or replace the related wiring harness or speaker.

(See FRONT DOOR SPEAKER REMOVAL/INSTALLATION.)

(See TWEETER REMOVAL/INSTALLATION.)

(See REAR DOOR SPEAKER REMOVAL/INSTALLATION.)

(See FRONT CENTER SPEAKER REMOVAL/INSTALLATION.)

(See FRONT SIDE SPEAKER REMOVAL/INSTALLATION.)

(See REAR SPEAKER REMOVAL/INSTALLATION.)

NOTE:

• If there is a short circuit between the speaker harness or speaker lead wire and ground, the protector circuit inside the audio unit operates to cut the sound.

No

Go to the next step.

12

• Inspect the suspect speaker.

• Is the speaker normal?

NOTE:

• If the speaker lead wire contacts to either ground or vehicle frame, replace the speaker.

Yes

With Bluetooth system

• Go to the next step.

Without Bluetooth system

• Go to Step 14.

No

Without Bose®

• Replace the speaker.

  (See FRONT DOOR SPEAKER REMOVAL/INSTALLATION.)

  (See REAR DOOR SPEAKER REMOVAL/INSTALLATION.)

  (See TWEETER REMOVAL/INSTALLATION.)

With Bose®

• Replace the speaker.

  (See FRONT DOOR SPEAKER REMOVAL/INSTALLATION.)

  (See TWEETER REMOVAL/INSTALLATION.)

  (See REAR DOOR SPEAKER REMOVAL/INSTALLATION.)

  (See FRONT CENTER SPEAKER REMOVAL/INSTALLATION.)

  (See FRONT SIDE SPEAKER REMOVAL/INSTALLATION.)

  (See REAR SPEAKER REMOVAL/INSTALLATION.)

13

• Does the malfunction occur while the Bluetooth system is operating?

Yes

The system is normal. Explain to the customer that the speaker is muted while the Bluetooth system is operating.

No

Go to the next step.

14

• Do the steering switches operate?

Yes

The system is normal. Explain to the customer that the cause is mis-operation of the steering switches.

No

Replace the audio unit.

(See AUDIO UNIT REMOVAL/INSTALLATION.)