H

I-Ei

Last Code No.

06: Periodic communication number of when occurring in the diagnosis memory code.

H: This shows the equipment has a diagnosis code. 190: Physicai address

1 : This is the number allotted to the diagnosis code ihat occurred.

2t : Periodic communication number of when occurring in the diagnosis memory code.

1 ; This is the number allotted to the diagnosis code that occurred.

1: This is the number allotted to the diagnosis code that occurred, 360: Physical address

(Equipment that is communicating code)

(e) Diagnosis memory clear

(1) After error is fixed, start up the diagnosis mode.

(2) Continue pressing preset switch "5" for 2 sees. (CLr is displayed,)

(3) Press the preset switch "2" and transfer to the diagnosis memory mode and check that the normal code (00) is output.

10. DIAGNOSIS CODE LIST

. If there is "O" in the column of system check, an error can be detected when the mode is switched to the system check mode.

if there is "O" in the column of diagnosis mode, each unit is monitoring whether or not it has failure. In case of detecting failure, it memorizes DTC.

Parts Name

DTC

Diagnosis item

Diagnosis content

Countermeasure and inspected parts

Systert Check

1 Diagnosis memory

!

42

FM tuner error

There is an error in FM tuner

x 1 O

i ■

50

Cassette error

There is an error in cassette deck.

Radio receiver check

X

1 ^

51

Cassette eject error

Cassette can not be ejected from Head Unit.

X

Unit

(190)

D1

Transmitter error

Communication with the equipment that is communicating has failed successively.

Radio receiver check. Wire harness and connecter check.

o

o

D2

Periodic communication no response

Error in periodic communication.

• Wire harness and connector

X

(.)

FF

Diagnosis no response

Result of diagnosis is not issued from start to finish.

Radio receiver check.

o

X

Communication with the

DI

Transmitter error

equipment that is communicating has failed successively.

Stereo component amplifier check.

Ct

AMP (440)

D4

Periodic communication error

Connection confirmation has not come from the equipment that is communicating

• Radio receiver chock.

• Wire harness check.

X

NOTICE:

When replacing the internal mechanism (computer part) of the audio system, be careful that no part of your body or clothing comes in contact with the terminals of the leads from the 1C, etc. of the replacement part (spare part).

HINT:

This inspection procedure is a simple troubleshooting which should be carried out on the vehicle during system operation and was prepared on the assumption of system component troubles (except for the wires and connectors, etc.).

Always inspect the trouble taking the following items into consideration. Open or short circuit of the wire harness Connector or terminal connection fault

Problem

No.

Radio

Radio not operating when power switch turned to 'ON'.

1

Display indicates when power switch turned to 'ON', bul no sound (including noise) is produced.

2

Noise present, but AM - FM not operating.

3

Any speaker does not work.

4

Any AM or FM does not work.

5

Few preset turning bands.

5

Reception poor.

6

Sound quality poor.

7

Preset memory disappears.

8

Tape Player

Cassette tape cannot be inserted

9

Cassette tape inserted, but no power.

10

Power coming in, but tape player not operating.

»1

Any speaker does not work.

12

Sound quality poor.

13

Tape jammed, malfunction with tape speed or auto-reverse.

14

Cassette tape will not eject.

15

CD Player

CD cannot be inserted

16

CO inserted, but no power

17

Power coming in, but CD player not operating.

18

Sound jumps.

19

Sound quality poor (Volume faint).

20

Any speaker does not work

21

CD will not be ejected.

22

Power Amplifier

No power coming in.

23

Power coming in, but power amplifier not operating.

PA

Any speaker does not work.

25

Noise

Noise occurs

26

Noise produced by vibration or shock while driving.

27

Noise produced when engine starts.

28

The term "AM" includes LW,MW and SW, and the term "FW" includes UKW.

L"

1 Radio

RADIO NOT OPERATING WHEN POWER SWITCH TURNED TO "ON"

L"

1 Radio

RADIO NOT OPERATING WHEN POWER SWITCH TURNED TO "ON"

8E-99

Radio

DISPLAY INDICATES WHEN POWER SWITCH TURNED TO "ON", BUT NO SOUND (INCLUDING "NOISE") IS PRODUCED

is tape player operating normally?

Radio assembly faulty.

Check if ECU-ACC fuse is OK?

ik power ri ¡ppiisd to ACH terminal nt power amplifier? 1. „

ACC wire harness faulty.

Yes Nu

Check if RAD fuse is OK7 »

Replace fuse.

OK

Is power supplied to +B terminai of power amplifier? j „

+ B wire harness faulty.

grounded normally?

ps power supplied toACC terminal of radio receiver?

-»I Power amplifier faulty.

Is power supplied to +B terminal of radio receiver?

Power amplifier faulty.

Check if GND (wire harness side) of power amplifier grounded normally?

GND faulty.

Does continuity exist in speaker wire harness?

Speaker wire harness faulty.

[Temporarily install another speaker. Functions OK?_-» Speaker faulty.

Hiss noise from speaker?

Power amplifier faulty. Recheck system after repair.

Radio assembly faulty. Recheck system after repair.

Radio

NOISE PRESENT, BUT AM-FM NOT OPERATING

Go to No,25

radio side faulty.

Radio faulty.

Radio

ANY SPEAKER DOSE NOT WORK

Is tape player operating normally? No

is hiss noise produced by non-functioning speaker?

Power amplifier faulty. Recheck system after repair.

Radio assembly faulty.

Radio assembly faulty. Recheck system after repair.

Dork continuity exist in speaker wire harness? I „

Yes

No

Temporarily install another speaker? Functions OK?

-H

I

No

Yes

Speaker wire harness faulty.

Power amplifier faulty. Recheck system after repair.

Speaker wire harness faulty.

Radio

ANY AM OR FM DOES NOR WORK FEW PRESET TUNING BANDS

Problem with radio wave signals or location?

J—-fcj~Poor signals, poor location. J

Is power lor the antenna being output Irom the radio assembly?

Radio assembly faulty.

Are both AM and FM defective?

No fis tape player operating normally?

Radio assembly faulty.

^Temporarily install another speaker. Functions OK? No

'Yes

Speaker faulty.

[~Hiss noise from speaker?

Power amplifier faulty. Recheck system after repair.

Radio assembly faulty. Recheck system after repair.

POOR RECEPTION

Is the condition bad in comparison with ottier vehicles?

Are Ihere any additional installation parts? (Sun shade film, telephone antenna, etc.)

I Is the contact of the plug jack of the radio OK? Yes

Does the condition get better by using the outer antenna (such as piitar antenna)?

Is the contact of the antenna terminal on the glass surface and the defogger terminal?

Check the grounding of the antenna, antenna cord, choke coil, and noise fitter. {See page BE-88)

Does the condition get better by replacing the choke coil?

Does the condition get better by replacing the antenna cord?

[Exchange the glass.

An eiectric wave environment is bad.

Are Ihere any additional installation parts? (Sun shade film, telephone antenna, etc.)

No

Chech il there is any scratch and breaking of a wire on the glass antenna and the delogger pattern, {visual check, tester) (See page BE-88)

No

I Is the contact of the plug jack of the radio OK? Yes

Does the condition get better if removing them?

Influence of additional installation parts.

Repair. (See page BE-55)

Take a measure for contact.

^Check the radio.

„fcj^Take a a measure for contact.

Is the contact of the antenna terminal on the glass surface and the defogger terminal?

Replace the antenna cord.

Grounding failure.

Check the grounding of the antenna, antenna cord, choke coil, and noise fitter. {See page BE-88)

Replace the antenna cord.

Grounding failure.

Replace the choke coil.

J. Replace the antenna cord.

Radio

SOUND QUALITY POOR

[is sound quality always bad? -Is sound quality bad in certain

Yes j areas only?

Poor signals, poor location.

[ Is taps player operating normally?—

Is tape player operating normally?

Radio assembly or power amplifier faulty.

Is speaker properly installed?

Temporarily install another speaker. Functions OK?

Radio assembly or power amplifier faulty. Recheck system after repair.

Yes j^Radio assembly faulty.

Radio assembly faulty.

_»j Speaker faulty.

Radio

PRESET MEMORY DISAPPEARS

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

Radio assembly faulty.

Can cassette tape be inserted in tape player?

No

I Check if RAD fuse is OK?

r

jls power supplied to +B terminal of power amplifier?

Yes

Check if GND (wire harness side) of power amplifier grounded normally?

OK

Is power supplied to +B terminal of radio assembly?

I

Yes

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

Radio assembly faulty.

^ Replace fuse.

~»j +Bwire harness faulty.

GND faulty.

NG i

•jPower amplifier faulty.

BE-104

Tape Player

CASSETTE TAPE CANNOT BE INSERTED

j is there a foreign object inside tape player?

_~Z3-»^Remove foreign object.

f Is auto search button radio operating normally?

No

j Check if RAD fuse is OK?

OK

j Is power supplied to +B terminal of power amplifier?

Radio assembly faulty.

Replace fuse.

j Is power supplied to +B terminal of power amplifier?

+8 wire harness faulty.

Check if GND (wire harness side) of power amplifier grounded normally?

Check if GND (wire harness side) of power amplifier grounded normally?

OK

Is power supplied to +B terminai of radio assembly?

Yes

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

OK

Radio assembly faulty.

^Power amplifier faulty.

Power amplifier faulty.

Tape Player

CASSETTE TAPE INSERTED, BUT NO POWER

Tape Player

CASSETTE TAPE INSERTED, BUT NO POWER

Is radio operating normal?

Radio assembly faulty.

Yes

No

[ Check if ECU-ACC fuse is OK?

[ Check if ECU-ACC fuse is OK?

Is power supplied to ACC terminal of power amplifier? -JACC wire harness faulty.

Check if RAD fuse is OK?

r Replace fuse.

Is power supplied to +8 terminal of radio assembly?

+8 wire harness faulty.

Is power supplied to +8 terminal of radio assembly?

+8 wire harness faulty.

Yes

No

Is power supplied to ACC terminal of radio assembly?

Power amplifier faulty. j

Yes

No

Radio assembly faulty.

POWER COMING IN, BUT TAPE PLAYER NOT OPERATING

Function OK if different casselte tape inserted?

No i Is radio operating normally?

Cassette tape faulty.

i Is radio operating normally?

No

Does continuity exist in speaker wire harness?

Yes

Temporarily install another speaker. Function OK?

No

Hiss noise from speaker?

i

r Yes

Radio assembly faulty. Recheck system after repair.

Radio assembly faulty.

Speaker wire harness faulty.

Speaker faulty.

Power amplifier faulty. Recheck system after repair.

Tape Player

ANY SPEAKER DOES NOT WORK

Is radio operating normally?

Is hiss noise produced by non-functioning speaker.

Does continuity exist in speaker wire harness?

Temporarily install another speaker. Function OK?

[Radio assembly or power amplifier faulty-

—j Radio assembly faulty.

Radio assembly faulty. Recheck system after repair.

Speaker wire harness faulty.

-*j Speaker faulty.

13 Tape Player

SOUND QUALITY POOR (VOLUME FAINT)

Operates normaliy after cleaning ¡he heads?

Is radio operating normally?

Is speaker properly installed? | Yes

Temporarily install another speaker, Function OK?

Radio assembly faulty.

Head dirty.

Radio assembly faulty.

13 Tape Player

SOUND QUALITY POOR (VOLUME FAINT)

Function OK il different cassette tape inserted?

Cassette tape faulty.

Yes

No

Operates normaliy after cleaning ¡he heads?

Head dirty.

Tape Player

TAPE JAMMED MALFUNCTION WITH TAPE SPEED OR AUTO-REVERSE

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

No

Is there a foreign object inside tape player?

No

Operates normally after cleaning the heads?

No

Radio assembly faulty.

Cassette tape faulty.

Remove foreign object.

Head dirty.

Tape Player

CASSETTE TAPE WILL NOT BE EJECTED

Tape Player

CASSETTE TAPE WILL NOT BE EJECTED

[~fíadio assembly faulty.

CD Player

CD INSERTED, BUT NO POWER

Is radio operating normally?

Yes „

Is power supplied to ACC terminal of CD player?

No

Radio assembly faulty.

Yes

I CD player

faulty.

Check if ECU-ACC fuse is OK?

Replace fuse.

OK

NG

Is power supplied to ACC terminal of power amplifier?

ACC wire harness faulty.

Yes

No

[is power supplied to ACC terminal of radio assembly?

Power amplifier faulty.

[is power supplied to ACC terminal of radio assembly?

Radio assembly faulty.

Power amplifier faulty.

CD Player

POWER COMING IN, BUT CD PLAYER NOT OPERATING

CD inserted with correct side up?

J7es

Insert correctly.

Function OK if different CD inserted?

CD faulty.

Is radio operating normally?

Yes

Is temperature inside cabin hot?

No

Has sudden temperature change occurred inside cabin?

CD player faulty.

Protective circuit in operation.

Formation of condensation I due to temp, changes.

CD player faulty.

QDose continuity exist in speaker wire harness? Yes

Speaker wire harness faulty.

Temporarily install another speaker. Functions OK?

Hiss noise from speaker?

Tes"

Power amplifier faulty. Recheck system after repair.

Radio assembly faulty. Recheck system after repair.

CD Player

SOUND JUMPS

Does sound jump oniy during strong vibration?

No

Is CD player properly installed?

Yes

Functions OK if different CD inserted?

i

No

Has sudden temperature change occurred inside cabin?

No

Jumping caused by vibration.

Install properiy.

CD faulty.

Formation of condensation due to temp, changes.

CD Player

SOUND QUALITY POOR (VOLUME FAINT)

Function OK if different CD inserted?

Is radio operating normally?

No is speaker property installed?

Temporarily install another speaker. Functions OK?

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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