Toyota Celica 2005 Repair Manual page 2278

1 Radio
Is tape player operating normally?
No
Check if ECU−ACC fuse is OK.
OK
Is power supplied to ACC terminal of power amplifier?
Yes
Check if RADIO fuse is OK.
OK
Is power supplied to BU+ terminal of power amplifier?
Yes
Check if GND (wire harness side) of power amplifier
grounded normally.
OK
Is power supplied to ACC terminal of radio?
Yes
Is power supplied to B terminal of radio?
Yes
Check if GND (wire harness side) to radio is OK.
OK
Radio assembly faulty.
2005 CELICA (RM1131U)
BODY ELECTRICAL
RADIO NOT OPERATING WHEN POWER SWITCH TURNED TO "ON"
− AUDIO SYSTEM
Radio assembly faulty.
Yes
Replace fuse.
NG
ACC wire harness faulty.
No
Replace fuse.
NG
+ B wire harness faulty.
No
GND faulty.
NG
Power amplifier or ACC wire harness faulty.
No
Power amplifier or +B wire harness faulty.
No
GND faulty.
NG
2277
BE−103