Poor radio reception
Precautions: Precautions for Audio Visual / Navigation · Precautions for Body, Cab and Accessories · General safety (00)
Before performing the following troubleshooting, check if the symptom is not caused by incorrect handling while referring to Owner’s Manual.
If the cause cannot be identified by the following troubleshooting, replace audio unit with a known-good one. If the symptom is cleared, audio unit is the cause.
| Condition | Possible Cause | Action |
|---|---|---|
|
Poor radio reception
|
Faulty radio antenna connector
|
Check radio antenna connectors for connection.
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|
Faulty radio antenna
|
Substitute a known-good radio antenna and recheck reception.
|
|
|
Faulty radio antenna feeder cable
|
Refer to Radio Antenna Feeder Cable Inspection.
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Faulty radio antenna power supply circuit
|