TOYOTA SUPRA 1997 Service Repair Manual
Manufacturer: TOYOTA, Model Year: 1997, Model line: SUPRA, Model: TOYOTA SUPRA 1997Pages: 1807, PDF Size: 39.36 MB
Page 241 of 1807
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
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BE-85
2063 Author: Date:
1997 SUPRA (RM502U)
Page 242 of 1807
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
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2064 Author: Date:
1997 SUPRA (RM502U)
Page 243 of 1807
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.
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BE-87
2065 Author: Date:
1997 SUPRA (RM502U)
Page 244 of 1807
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)
Page 245 of 1807
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
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BE-89
2067 Author: Date:
1997 SUPRA (RM502U)
Page 246 of 1807
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)
Page 247 of 1807
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.
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BE-91
2069 Author: Date:
1997 SUPRA (RM502U)
Page 248 of 1807
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
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2070 Author: Date:
1997 SUPRA (RM502U)
Page 249 of 1807
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
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BE-93
2071 Author: Date:
1997 SUPRA (RM502U)
Page 250 of 1807
I01413
CONTINUED FROM PREVIOUS PAGE
Is power source from radio OK?Check continuity between motor antenna
and radio receiver assembly.
Wire harness faulty.
Radio receiver assembly faulty. Inspect motor.
Motor antenna control relay faulty.
Motor faulty.No
Ye s
No
No
Ye sYe s
I01414
27
Antenna ANTENNA-RELA TED
Is the antenna cable connected securely to the radio?Connect the cable
Go to 26. No
Ye s
Normal Type
Does antenna rod extend fully when radio
Variable Length Type
Does antenna rod extend to the specified
radio switch is turned off?
Inspect glass printed antenna.
(w/ glass printed antenna)Glass printed antenna faulty. NG
OK
Is the antenna nut tight?
Temporarily install another antenna. Functions OK?
Radio receiver side faulty.Tighten nut.
Motor antenna faulty. switch is turned on?
Does antenna rod fully retract when the length when the radio switch is turned on.No
No Ye s
Ye s
Ye sYe s BE-94
- BODY ELECTRICALAUDIO SYSTEM
2072 Author: Date:
1997 SUPRA (RM502U)