1997 TOYOTA SUPRA CD player

7 Radio SOUND QUALITY POOR
Ye sNo
Ye s
NG
OK Is sound quality always bad?
Is tape player operating normally?Poor signals, poor location.
Radio assembly faulty.
Install properly.
Speaker faulty. Is tape player operating normally?
Is speaker properly installed?
Radio assembly or power amplifier faulty.
Recheck system after repair. Temporarily install another speaker. Functions OK?Is sound quality bad in certain
areas only?
Radio assembly or power
amplifier faulty.
Can cassette tape be inserted in tape player?
Check if RADIO No.1 fuse is OK?
Is +B applied to power amplifier?
Check if GND (wire harness side) to power amplifier?
Is +B applied to radio assembly?Radio assembly faulty.
Replace fuse.
+B wire harness faulty.
GND faulty.
Power amplifier faulty. 8 Radio PRESET MEMORY DISAPPEARSNo
Radio assembly faulty.
No
NoNo NoYe s
Ye s
Ye s
Power amplifier faulty. Check if GND (wire harness side) to radio assembly?
Radio assembly faulty.Ye s
Ye sYe s
No
No
No NG
NG
OKOKYe s
BE-82
- BODY ELECTRICALAUDIO SYSTEM
2060 Author
: Date
:
1997 SUPRA (RM502U)

9 Tape Player CASSETTE TAPE CANNOT BE INSERTED
Ye s
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.
Power amplifier faulty. Ye s No
No
OK
Ye s
OK
Ye s
OKNG
No
NG
Is ACC applied to radio assembly? 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.No
No
No
No OK
OKYe s
Ye s
Ye sYe s
NG
NG
- BODY ELECTRICALAUDIO SYSTEM
BE-83
2061 Author
: Date
:
1997 SUPRA (RM502U)

11 Tape Player POWER COMING IN, BUT TAPE PLAYER NOT OPERATING
Ye s
NoRadio assembly faulty. Cassette tape faulty.
Speaker wire harness faulty.
Speaker faulty.
Power amplifier faulty.
Recheck system after repair. Ye s No
No
Ye s
Ye sNo 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.Ye s
Radio assembly faulty.
Recheck system after repair. Radio assembly faulty.
No
No
No Ye sYe s
Ye s
Ye s No 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 ANY SPEAKER DOES NOT WORK BE-84
- BODY ELECTRICALAUDIO SYSTEM
2062 Author
: Date
:
1997 SUPRA (RM502U)

13 Tape Player SOUND QUALITY POOR (VOLUME FAINT)
Ye s
NoRadio assembly faulty. Cassette tape faulty.
Install properly.
Speaker faulty. Head dirty.
Ye s No
No
Ye sYe s
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?
Ye s
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
NoYe s
Ye s
Ye s 14
Tape PlayerTAPE JAMMED MALFUNCTION WITH TAPE SPEED OR AUTO-REVERSE
- BODY ELECTRICALAUDIO SYSTEM
BE-85
2063 Author
: Date
:
1997 SUPRA (RM502U)

15 Tape Player CASSETTE TAPE WILL NOT 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?
Is -B applied to power amplifier?
Is +B applied to radio assembly?Cassette tape jammed.
Replace fuse.
+B wire harness faulty.
Power amplifier faulty. Ye s
Ye s
Ye sYe s
NoNo
No
No NG
OK
Radio assembly faulty.
16 CD Player CD CANNOT BE INSERTED
Ye s
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?
NoNo Ye s
Ye sYe s
No OK
NG
OKOK
NGNG
BE-86
- BODY ELECTRICALAUDIO SYSTEM
2064 Author
: Date
:
1997 SUPRA (RM502U)

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
NoNo Ye s
Ye s
Ye s
Ye s OKNG
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. Is there continuity in speaker wire harness?
Temporarily install another speaker.
Functions OK?
Hiss noise from speaker?
Radio assembly faulty.
Recheck system after repair.No
Ye s Ye s
Ye s
Ye s
Ye s
Ye s Ye s
Ye s No
No
NoNo
No
No
No
Formation of
condensation
due to temp. changes.
- BODY ELECTRICALAUDIO SYSTEM
BE-87
2065 Author
: Date
:
1997 SUPRA (RM502U)

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. Ye sYe s
Ye s
Ye s 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?Ye s
No
Is speaker property installed?CD player faulty.
Install properly. Ye s
Ye s Ye s No
NoNo
Radio assembly or CD player or power amplifier faulty. BE-88
- BODY ELECTRICALAUDIO SYSTEM
2066 Author
: Date
:
1997 SUPRA (RM502U)

CD player faulty.
Power amplifier faulty.
Recheck system after repair. Temporarily install another speaker.
Function OK?21 CD Player ANY SPEAKER DOES NOT WORK
Speaker wire harness faulty.
Speaker faulty. Is hiss noise produced by non-functioning speaker?
Is there continuity in speaker wire harness? Is radio operating normally?
Ye sYe s
Ye s
Ye s No
No
NoNoRadio assembly faulty.
Recheck system after repair.
CD player faulty. 22 CD Player CD WILL NOT BE EJECTED
Is auto search button of radio
operating normally?
NoIs +B applied to CD player?Radio assembly
faulty.
Replace fuse.
+B wire harness faulty.
Power amplifier faulty.
Radio assembly faulty. Is +B applied to radio assembly? Check if RADIO No.1 fuse is OK?
Is +B applied to power amplifier?No
No
No Ye s
NG
OK
Ye s
Ye sYe s
- BODY ELECTRICALAUDIO SYSTEM
BE-89
2067 Author
: Date
:
1997 SUPRA (RM502U)