NO.4 SOUND JUMPS [CD PLAYER/CHANGER]

id0903e5806200

4

Sound jumps

Possible DTC

Using the M-MDS

B1188:64

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

10:Er07, 22: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.

4	Sound jumps
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.)
1	• Does the sound skip when pressing the SCAN button?	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.)
2		No	Go to the next step.
3	• Does the sound jump when the vehicle is stopped?	Yes	Go to Step 8.
3	• Does the sound jump when the vehicle is stopped?	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.
4		No	Go to Step 8.
5	• Is the audio unit installed securely?	Yes	Go to the next step.
5	• Is the audio unit installed securely?	No	Install the audio unit securely.
6	• Inspect the tire pressure. • Is the tire pressure normal?	Yes	With CD changer • Go to Step 9. With CD player • Replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION.) (See AUDIO UNIT DISASSEMBLY/ASSEMBLY.)
6		No	Go to the next step.
7	• Adjust the tire pressure within specification. • Does the sound jump when driving the vehicle?	Yes	With CD changer • Go to Step 9. With CD player • Replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION.) (See AUDIO UNIT DISASSEMBLY/ASSEMBLY.)
7		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	With CD changer • Go to the next step. With CD player • Replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION.) (See AUDIO UNIT DISASSEMBLY/ASSEMBLY.)
8		No	Audio system is normal. Explain to the customer that the CD is malfunctioning.
9	• Verify that all of the audio unit reset conditions for the customer's audio unit are met. (See AUDIO UNIT RESET PROCEDURE [ENTIRE AUDIO SYSTEM].) • Are all of the audio unit reset conditions for the customer's audio unit met?	Yes	Perform the audio unit reset. (See AUDIO UNIT RESET PROCEDURE [ENTIRE AUDIO SYSTEM].)
9		No	Replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION.) (See AUDIO UNIT DISASSEMBLY/ASSEMBLY.)

4	Sound jumps
Possible DTC	Using the M-MDS	B1188:64
Possible DTC	Without using M-MDS (On-board diagnostic test mode)	10:Er07, 22: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.