NO.11 SOUND JUMPS [ENTIRE AUDIO SYSTEM]
id0903e2945400
11 |
Sound jumps |
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Possible DTC |
Using the M-MDS |
B1188:64 |
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Without using M-MDS (On-board diagnostic test mode) |
10:Er07, 22:Er07 |
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Possible cause
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• 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
• 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
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Diagnostic procedure
STEP |
INSPECTION |
ACTION |
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1
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• Does the sound jump only while in the radio mode?
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Yes
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Go to Step 2.
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No
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Go to Step 5.
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2
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• Does noise occur?
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Yes
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Go to the next step.
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No
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With CD changer
• Go to Step 15.
With CD player
• Replace the audio unit.
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3
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• Can the location where the sound jumps be specified?
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Yes
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The system is normal. Explain to the customer that the noise is caused by radio wave disturbances or broadcast wave conditions from the outside.
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No
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Go to the next step.
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4
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• Can the broadcast where the sound jumps be specified?
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Yes
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Explain to the customer that the cause is poor broadcast reception conditions.
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No
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With CD changer
• Go to Step 15.
With CD player
• Replace the audio unit.
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5
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• Does the sound jump only while in the CD mode?
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Yes
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Go to the next step.
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No
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Go to Step 8.
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6
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• Can the disc in which the sound jump occurs be specified?
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Yes
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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.
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No
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Go to the next step.
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7
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• 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)?
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Yes
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The system is normal. Explain to the customer that the cause is vibration while the vehicle is driven.
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No
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With CD changer
• Go to Step 15.
With CD player
• Replace the audio unit.
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8
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• Does the sound jump using the specified speaker?
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Yes
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Without Bose®
• Go to the next step.
With Bose®
• Go to Step 10
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No
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With Bluetooth system
• Go to Step 13.
Without Bluetooth system
• Go to Step 14.
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9
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• 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
Audio unit—rear door speaker
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Yes
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Go to Step 12.
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No
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Repair or replace the suspect wiring harness or speaker.
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10
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• Disconnect the audio amplifier connector.
• Inspect continuity between the following terminals of the audio amplifier connector and speaker connector.
For front door speaker (LH)
For front door speaker (RH)
For tweeter (LH)
For tweeter (RH)
For rear door speaker (LH)
For rear door speaker (RH)
For front center speaker
For rear center speaker (4SD)/Bass-box (5HB)
For rear speaker
• Is there continuity?
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Yes
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Go to Step 11.
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No
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Repair or replace the repair related wiring harnesses.
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11
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• Disconnect the audio amplifier connector.
• Inspect the continuity between the audio amplifier connector and ground:
For front door speaker (LH)
For front door speaker (RH)
For tweeter (LH)
For tweeter (RH)
For rear door speaker (LH)
For rear door speaker (RH)
For front center speaker
For rear center speaker (4SD)/Bass-box (5HB)
For rear speaker
• Is there continuity?
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Yes
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Repair or replace the related wiring harness or speaker.
(See TWEETER REMOVAL/INSTALLATION.)
(See REAR CENTER SPEAKER REMOVAL/INSTALLATION.) (4SD)
(See BASS-BOX REMOVAL/INSTALLATION.) (5HB)
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No
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Go to the next step.
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12
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• Inspect the suspect speaker.
• Is the speaker normal?
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Yes
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With Bluetooth system
• Go to the next step.
Without Bluetooth system
• Go to Step 14.
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No
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Without Bose®
• Replace the speaker.
(See TWEETER REMOVAL/INSTALLATION.)
With Bose®
• Replace the speaker.
(See TWEETER REMOVAL/INSTALLATION.)
(See REAR CENTER SPEAKER REMOVAL/INSTALLATION.) (4SD)
(See BASS-BOX REMOVAL/INSTALLATION.) (5HB)
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13
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• Does the malfunction occur while the Bluetooth system is operating?
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Yes
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The system is normal. Explain to the customer that the speaker is muted while the Bluetooth system is operating.
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No
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Go to the next step.
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14
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• Do the steering switches operate?
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Yes
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The system is normal. Explain to the customer that the cause is mis-operation of the steering switches.
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No
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With CD changer
• Go to the next step.
With CD player
• Replace the audio unit.
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15
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• Verify that all of the audio unit reset conditions for the customer's audio unit are met.
• Are all of the audio unit reset conditions for the customer's audio unit met?
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Yes
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Perform the audio unit reset.
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No
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Replace the audio unit.
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