SYSTEM DIAGRAM

Parts Location
How To Proceed With TroubleshootingToyota CH-R Service Manual > Audio And Visual System(for Radio Receiver Type): Sound Quality is Bad Only when CD is Played (Volume is Too Low)
PROCEDURE
1.
REPLACE CD AND RECHECK
(a) Replace the CD with a known good one and check that the malfunction disappears.
OK:
Malfunction disappears.
OK
END
NG
REPLACE RADIO RECEIVER ASSEMBLY
...
Toyota CH-R Service Manual > Wireless Door Lock Control System(w/ Smart Key System): Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" column of the
table. Check each sy ...