Lexus LS400 (2000 year). Service manual — part 35

V06281

POWER COMING IN, BUT PLAYER NOT OPERATING

17

CD Player

Is CD inserted correct side up?

Is 3.2 in. (8 cm) disc being used?

Insert correctly.

Use 4.7 in. (12 cm) disc.

CD faulty.

Go to step 17–B.

Protective circuit in operation.

Formation of condensation due to temp.
change.

Functions OK if different CD inserted?

Is radio operating normally?

Is temperature inside luggage compartment hot?

Does sudden temperature changer occur inside
luggage compartment?

Go to step 17–A.

Is +B applied to CD changer?

+B wire harness faulty.

ACC wire harness faulty.

GND wire harness faulty.

Wire harness faulty. (to radio receiver assembly)

Radio receiver assembly faulty.

Is ACC applied to CD auto changer?

Check if GND (wire harness side) to CD auto
changer is OK?

Is there continuity in CD auto changer wire har-
ness? (to radio receiver assembly)

Temporarily install another CD auto changer.
Functions OK?

CD auto changer faulty.

No

Yes

No

No

No

No

Yes

Yes

Yes

No

Yes

Yes

No

17–A.

Yes

Yes

Yes

Yes

Yes

No

No

No

No

–

BODY ELECTRICAL

AUDIO SYSTEM

BE–217

2080

V06282

SOUND JUMPS

18

CD Player

Does sound jump only during strong vibration?

Is there continuity in speaker wire harness?

17–B.

Speaker wire harness faulty.

speaker faulty.

Temporarily install another speaker.
Functions OK?

Go to step 17–A.

Is CD auto changer properly installed?

Functions OK if different CD inserted?

Jumping caused by vibration.

Install properly.

CD faulty.

Formation of condensation due to temp.
change.

+B wire harness faulty.

ACC wire harness faulty.

GND wire harness faulty.

Wire harness faulty. (to radio receiver assembly)

Does sudden temperature changer occur in lug-
gage compartment?

Is +B applied to CD auto changer?

Is ACC applied to CD auto changer?

Check if GND (wire harness side) to CD auto
changer is OK?

Is there continuity in CD auto changer wire har-
ness? (to radio receiver assembly)

Temporarily install another CD auto changer.
Functions OK?

Radio receiver assembly faulty.

CD auto changer faulty.

Yes

No

Yes

Yes

Yes

No

No

Yes

Yes

Yes

No

No

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

BE–218

–

BODY ELECTRICAL

AUDIO SYSTEM

2081

V03678

SOUND QUALITY POOR (VOLUME FAINT)

19

CD Player

Functions OK if different CD inserted?

Is radio operating normally?

Is speaker properly installed.

Temporarily install another speaker. Functions
OK?

Is +B applied to CD auto changer?

Is ACC applied to CD auto changer?

Check if GND (wire harness side) to CD auto
changer is OK?

Is there continuity in CD auto changer wire har-
ness? (to radio receiver assembly)

Temporarily install another CD auto changer.
Functions OK?

CD auto changer faulty.

+B wire harness faulty.

ACC wire harness faulty.

GND wire harness faulty.

Wire harness faulty.
(to radio receiver assembly)

Radio receiver assembly faulty.

Speaker faulty.

Install properly

CD faulty.

No

Yes

Yes

No

Yes

No

No

No

No

No

No

Yes

No

Yes

Yes

Yes

Yes

Yes

–

BODY ELECTRICAL

AUDIO SYSTEM

BE–219

2082

V06283

EITHER SPEAKER DOES NOT WORK

20

CD Player

Is radio operating normally?

Go to step 20–A.

Is power amplifier operating normally?

Is hiss produced by non–functioning speaker?

Is there continuity in speaker wire harness?

Temporarily install another speaker.
Functions OK?

Go to step 20–A.

Speaker wire harness faulty.

Speaker faulty.

Is +B applied to CD auto changer?

+B wire harness faulty.

Is ACC applied to CD auto changer?

Check if GND (wire harness side) to CD auto
changer is OK?

Is there continuity in CD auto changer wire har-
ness? (to radio receiver assembly)

Temporarily install another CD auto changer?
Functions OK?

CD auto changer faulty.

ACC wire harness faulty.

GND wire harness faulty.

Wire harness faulty. (to radio receiver assembly)

Radio receiver assembly faulty.

20–A

No

Yes

Yes

Yes

No

Yes

No

No

Yes

No

No

Yes

No

No

No

No

Yes

Yes

Yes

Yes

Go to step 20–A.

Go to step 20–A.

BE–220

–

BODY ELECTRICAL

AUDIO SYSTEM

2083