Light mode does not change when lighting switch is turned on
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 |
|---|---|---|
|
Light mode does not change when lighting switch is turned on
|
Faulty illumination power supply and ground circuits (including fuse)
|