Lexus GS300/400 (2000 year). Manual — part 62

13

Tape Player

SOUND QUALITY POOR (VOLUME FAINT)

Yes

No

Radio assembly faulty.

Cassette tape faulty.

Install properly.

Speaker faulty.

Head dirty.

Yes

No

No

Yes

Yes

No

No

Function OK if different cassette tape inserted?

Is radio operating normally?

Is speaker properly installed?

Temporarily install another speaker.
Function OK?

Radio assembly faulty.

Operates normally after cleaning the heads?

Yes

Function OK if different tape (less than 120 mins.) is inserted?

Operates normally after cleaning the heads?

Radio assembly faulty.

Is there a foreign object inside tape player?

Cassette tape faulty.

Remove foreign object.

Head dirty.

14

TAPE JAMMED MALFUNCTION WITH TAPE SPEED OR AUTO–REVERSE

No

No

No

Yes

Yes

Yes

14

Tape Player

TAPE JAMMED MALFUNCTION WITH TAPE SPEED OR AUTO–REVERSE

BE–206

–

BODY ELECTRICAL

AUDIO SYSTEM

2507

15

Tape Player

CASSETTE TAPE WILL NOT BE EJECTED

Radio assembly faulty.

Is tape player operating normally?

Is auto search button of radio operating normally?

Check if RADIO No.1 fuse is OK?

Cassette tape jammed.

Replace fuse.

+B wire harness faulty.

Power amplifier faulty.

Yes

Yes

Yes

Yes

No

No

No

No

NG

OK

Radio assembly faulty.

16

CD Player

CD CANNOT BE INSERTED

Yes

No

Is CD already inserted?

Eject CD.

Radio assembly faulty.

CD player faulty.

Replace fuse.

+B wire harness faulty.

Check if RADIO No.1 fuse is OK?

Radio assembly faulty.

Is auto search button of radio operating normally?

No

No

Yes

Yes

Yes

No

OK

NG

OK

OK

NG

NG

Check if GND (wire harness side) of radio assembly
grounded normally?

Is power supplied to +B terminal of power amplifier?

Is power supplied to +B terminal of radio receiver?

Is power supplied to +B terminal of power amplifier?

Is power supplied to +B terminal
of CD player?

Check if GND (wire harness
side) of CD player grounded
normally?

–

BODY ELECTRICAL

AUDIO SYSTEM

BE–207

2508

17

CD Player

CD INSERTED, BUT NO POWER

Radio assembly faulty.

Replace fuse.

Check if RADIO No.2 fuse is OK?

Is radio operating normally?

CD player faulty.

ACC wire harness faulty.

Power amplifier faulty.

Radio assembly faulty.

No

No

No

No

Yes

Yes

Yes

Yes

OK

NG

18

CD Player

POWER COMING IN, BUT CD PLAYER NOT OPERATING

Is CD inserted with correct side up?

Is radio operating normally?

Insert correctly.

CD faulty.

Protective circuit in
operation.

Function OK if different CD inserted?

Has sudden temperature change
occurred inside cabin?

CD player faulty.

Is temperature inside cabin hot?

Speaker wire harness faulty.

Speaker faulty.

Power amplifier faulty.
Recheck system after repair.

Dose continuity exist in speaker wire harness?

Temporarily install another speaker.
Functions OK?

Hiss noise from speaker?

Radio assembly faulty.
Recheck system after repair.

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

No

Formation of
condensation
due to temp. changes.

Is power supplied to ACC terminal of power amplifier?

Is power supplied to ACC terminal of radio assembly?

Is power supplied to ACC
terminal of CD player?

BE–208

–

BODY ELECTRICAL

AUDIO SYSTEM

2509

CD Player

SOUND JUMPS

19

CD player faulty.

Does sound jump only during strong vibration?

Is CD player properly installed?

Functions OK if different CD inserted?

Has sudden temperature change occurred inside cabin?

Jumping caused by vibration.

Install properly.

CD faulty.

Formation of condensation due to
temp. changes.

Yes

Yes

Yes

Yes

No

No

No

No

20

CD Player

SOUND QUALITY POOR (VOLUME FAINT)

Is radio operating normally?

CD faulty.

Function OK if different CD inserted?

Speaker faulty.

Temporarily install another speaker.
Functions OK?

Yes

No

Is speaker property installed?

CD player faulty.

Install properly.

Yes

Yes

Yes

No

No

No

Radio assembly or CD player or power amplifier faulty.

–

BODY ELECTRICAL

AUDIO SYSTEM

BE–209

2510