NO.4 SOUND JUMPS [CD PLAYER]

id0903k3806200

4 | Sound jumps
--- | ---
Possible DTC | Using the M-MDS | B1188:64
Without using M-MDS (On-board diagnostic test mode) | 10:Er07
Possible cause | • Defective CD (e.g., cracked, badly bent, rough edges, scratch, dirty CD, condensation) • Improper audio unit installation (e.g., rattle, loose) • Inadequate tire pressure • 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.

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | • Does the sound skip when pressing the SCAN button? | Yes | The system is normal. (Explain to the customer that the sound skips during SCAN.)
No | Go to the next step.
2 | • Can the disc in which the malfunction 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.
3 | • Does the sound jump when the vehicle is stopped? | Yes | Go to Step 8.
No | Go to the next step.
4 | • Drive the vehicle. • Does the sound jump when driving over uneven surfaces? | Yes | Go to the next step.
No | Go to Step 8.
5 | • Is the audio unit installed securely? | Yes | Go to the next step.
No | Install the audio unit securely.
6 | • Inspect the tire pressure. • Is the tire pressure normal? | Yes | Replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION.)
No | Go to the next step.
7 | • Adjust the tire pressure within specification. • Does the sound jump when driving the vehicle? | Yes | Replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION.)
No | Audio system is normal. Explain repairs to the customers.
8 | • Replace the CD known to be good. • Does the sound jump when driving the vehicle? | Yes | Replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION.)
No | Audio system is normal. Explain to the customer that the CD is malfunctioning.