Toyota Celica 2005 Repair Manual page 2294

26 Noise
Does the noise occur only in the radio?
Yes
Does the noise occur in a particular place?
No
Is there any additional installation part
around the glass imprinted antenna?
(Sun shade film, telephone antenna etc.)
No
Does the noise occur even pulling out the
antenna cord from the radio?
No
Does the noise occur even after pulling out the
antenna terminal on the glass surface?
No
Is there any adhesive (Butyl rubber)
stuck on the bases of the antenna
terminal, defogger terminal or bus bar?
No
Does the noise occur even after pulling out
the defogger terminal?
No
Check the grounding of the antenna,
antenna cord, coke coil, and noise filter.
(See page BE−90)
OK
Does the condition get better by replacing
the choke coil?
No
Does the condition get better by replacing
the antenna cord?
No
Noise radiates directly to the antenna from the
generation source.
2005 CELICA (RM1131U)
BODY ELECTRICAL
NOISE OCCURS
(It occurs in the cassette and CD.)
No
Yes
Yes
Yes
Yes
Yes
Yes
NG
Yes
Yes
− AUDIO SYSTEM
An electric environment.
Does the noise stop by removing it?
Influence of the film or the noise radiation
of the additional installation part.
Check the radio.
Noise mixing into the antenna cable.
Failure of glass installation.
Must scrape the butyl rubber.
Interfering noise from the defogger line
and choke coil.
Grounding failure.
Replace the choke coil.
Replace the antenna cord.
2293
BE−119
Refer to No.27.