1997 TOYOTA SUPRA radio

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)

23 Power Amplifier NO POWER COMING IN
+ B wire harness faulty.
GND faulty.
Power amplifier or wire harness faulty.
Power amplifier or wire harness faulty.
GND faulty.
Check if GND (wire harness side) to power amplifier is OK?
Is tape player operating normally?
Check if RAD-No.2 fuse is OK?
Is ACC applied to power amplifier?
Is + B applied to power amplifier?Ye s
NG
No OK No
No
No
No OK
OK
OK Ye s
Ye s
Ye s
Ye sNG
NG
NG Check if RAD-No.1 fuse is OK?
Is + B applied to radio assembly?
Radio assembly faulty.Replace fuse.
ACC wire harness faulty.
Is ACC applied to radio assembly?
Check if GND (wire harness side) to radio assembly is OK?
Radio assembly faulty.
Replace fuse.
BE-90
- BODY ELECTRICALAUDIO SYSTEM
2068 Author
: Date
:
1997 SUPRA (RM502U)

24 Power AmplifierPOWER COMING IN, BUT WOOFER (POWER) AMPLIFIER NOT
OPERATING
+ B wire harness faulty.
GND faulty.
Power amplifier faulty.
Speaker wire harness faulty. GND faulty.
Check if GND (wire harness side) to power amplifier is OK?
Is tape player operating normally?
Check if RAD-No.2 fuse is OK?
Is ACC applied to power amplifier?
Is + B applied to power amplifier?Ye s
NG
No OK No
No
No
No OK
OK
OK Ye s
Ye s
Ye s
Ye sNG
NG
NG Check if RAD-No.1 fuse is OK?
Is + B applied to radio assembly?
Radio assembly faulty. Recheck system after repair.Replace fuse.
ACC wire harness faulty.
Is ACC applied to radio assembly?
Check if GND (wire harness side) to radio assembly is OK?
Radio assembly faulty.
Replace fuse.
Is there continuity in speaker wire harness?
Temporarily install another speaker. Functions OK?
Hiss noise from speaker?Ye s
Ye s NoNo
No Ye sPower amplifier faulty.
Power amplifier faulty.
Recheck system after repair. Speaker faulty.
- BODY ELECTRICALAUDIO SYSTEM
BE-91
2069 Author
: Date
:
1997 SUPRA (RM502U)

CD player faulty.
Power amplifier faulty.
Recheck system after repair. Temporarily install another speaker.
Function OK?25 Power Amplifier 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. BE-92
- BODY ELECTRICALAUDIO SYSTEM
2070 Author
: Date
:
1997 SUPRA (RM502U)

I01412
26 AntennaANTENNA DOES NOT FULLY EXTEND OR FULLY
RETRACT
Can you see any problem with the exterior of
the removed antenna eg. deformation, cracks?
When you extend or retract the antenna by
hand, do you feel any irregularity in its move-
ment? Remove the antenna cap. Can you remove
the antenna rod as discribed in the antenna
rod removal and replacement procedure?
Replace the antenna rod with the supplied parts
according to the antenna rod removal and re-
placement procedure.
Reinstall the removed antenna according to the antenna
rod removal and replacement procedure.
Then again check antenna rod operation using the radio
switch.
Replace fuses.
ACC wire harness faulty.
+B wire harness faulty. Are fuses OK?
Is ACC applied to motor antenna
control relay?
Is +B applied to motor antenna
control relay?NoYe s
IG wire harness faulty.
GND faulty. Is IG applied to motor antenna
control relay?
Is GND (Wire harness side ) to
motor antenna control relay OK?
CONTINUED ON NEXT PAGENo
No Ye s
Ye s
Ye s
Ye sNo
No
No
Ye s
Ye sNo
No
- BODY ELECTRICALAUDIO SYSTEM
BE-93
2071 Author
: Date
:
1997 SUPRA (RM502U)