Lexus ES300 (1997 year). Service manual - part 137

V08484

9

Tape Player

CASSETTE TAPE CANNOT BE INSERTED

Yes

No

NG

Is there a foreign object inside tape player?

Is auto search button radio operating normally?

Check if RADIO No.1 fuse is OK?

Is +B applied to power amplifier?

Check if GND (wire harness side) to power amplifier is OK?

Is +B applied to radio assembly?

Check if GND (wire harness side) to radio assembly is OK?

Radio assembly faulty.

Radio assembly faulty.

Remove foreign object.

Replace fuse.

+B wire harness faulty.

GND faulty.

Power amplifier faulty.

Is ACC applied to radio assembly?

Power amplifier faulty.

10

Tape Player

CASSETTE TAPE INSERTED, BUT NO POWER

Is radio operating normal?

Check if RAD No.2 fuse is OK?

Is ACC applied to power amplifier?

Is +B applied to power amplifier?

ACC wire harness faulty.

Check if RADIO No.1 fuse is OK?

Radio assembly faulty.

Replace fuse.

Replace fuse.

+B wire harness faulty.

Power amplifier faulty.

Radio assembly faulty.

Yes

No

No

OK

Yes

OK

Yes

OK

NG

No

NG

No

No

No

No

OK

OK

Yes

Yes

Yes

Yes

NG

NG

BE–154

–

BODY ELECTRICAL

AUDIO SYSTEM

1538

1997 LEXUS ES300   (RM511U)

V08485

11

Tape Player

POWER COMING IN, BUT TAPE PLAYER NOT OPERATING

Yes

No

Radio assembly faulty.

Cassette tape faulty.

Speaker wire harness faulty.

Speaker faulty.

Power amplifier faulty.
Recheck system after repair.

Radio assembly faulty.
Recheck system after repair.

Radio assembly faulty.

Yes

No

No

Yes

Yes

No

No

No

No

No

Yes

Yes

Yes

Yes

No

Function OK if different cassette tape inserted?

Is radio operating normally?

Is there continuity in speaker wire harness?

Temporarily install another speaker.
Function OK?

Hiss noise from speaker?

Radio assembly faulty.
Recheck system after repair.

Is radio operating normally?

Speaker wire harness faulty.

Speaker faulty.

Is hiss noise produced by non–functioning speaker.

Is there continuity in speaker wire harness?

Temporarily install another speaker.
Function OK?

Radio assembly or power amplifier faulty.

12

Tape Player

EITHER SPEAKER DOES NOT WORK

Yes

–

BODY ELECTRICAL

AUDIO SYSTEM

BE–155

1539

1997 LEXUS ES300   (RM511U)

V08486

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?

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

Yes

14

Tape Player

TAPE JAMMED MALFUNCTION WITH TAPE SPEED OR AUTO–REVERSE

15

Tape Player

CASSETTE TAPE WILL NOT EJECTED

Radio assembly faulty.

Radio assembly faulty.

Is tape player operating normally?

Is auto search button of radio operating normally?

Check if RADIO No.1 fuse is OK?

Is –B applied to power amplifier?

Is +B applied to radio assembly?

Cassette tape jammed.

Replace fuse.

+B wire harness faulty.

Power amplifier faulty.

Yes

Yes

Yes

Yes

No

No

No

No

NG

OK

BE–156

–

BODY ELECTRICAL

AUDIO SYSTEM

1540

1997 LEXUS ES300   (RM511U)

V08487

16

CD Player

CD CANNOT BE INSERTED

Yes

No

Is CD already inserted?

Eject CD.

Radio assembly

faulty.

Is +B applied to CD player?

Check if GND wire harness side

to CD player is OK?

CD player faulty.

Replace fuse.

+B wire harness faulty.

Check if RADIO No.1 fuse is OK?

Is +B applied to power amplifier?

Check if GND (wire harness side) to radio assembly 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

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?

Is ACC applied to CD player?

CD player faulty.

ACC wire harness faulty.

Is ACC applied to power amplifier?

Power amplifier faulty.

Radio assembly faulty.

Is ACC applied to radio assembly?

No

No

No

No

Yes

Yes

Yes

Yes

OK

NG

–

BODY ELECTRICAL

AUDIO SYSTEM

BE–157

1541

1997 LEXUS ES300   (RM511U)