Toyota PT546-00140, Troubleshooting Manual

Page: 9 / 41

9 RADIO HD reception is poor and sound is mute frequently.
Problem with radio wave signals or location?
Is there continuity in antenna wire harness?
Is there analog reception is good?
9-A.
Is there continuity in speaker wire harness?
Temporarily install another speaker.
Is the function OK?
Head unit faulty.
Poor signals, poor location.
Antenna wire harness
faulty.
Head unit faulty.
Go to No.6
Speaker wire harness faulty.
Speaker faulty.
Yes
No
No
Yes
Yes
No
Yes
No
No
Yes