Toyota Camry Manual page 448

Is tape player operating normally?
Check if RADIO fuse is OK?
Is ACC applied to radio?
Yes
Check if DOME fuse is OK?
Is + B applied to radio?
Yes
Check if GND (wire harness side) to radio is OK?
Is there continuity in speaker wire harness?
Yes
Temporarily install another speaker.
Go to No. 15
BODY ELECTRICAL SYSTEM
If radio side faulty
– AUDIO SYSTEM
Yes
Radio faulty.
Replace fuse.
ACC wire harness faulty.
Replace fuse.
+ B wire harness faulty.
GND faulty.
Speaker wire harness faulty.
Yes
Speaker faulty.
Radio faulty.
BE–129