USB Power Outlet Inspection

WARNING: This page is about a different car, the 2018 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Switch the ignition ON (engine off).
Measure the voltage between the USB port power supply and GND.

Fig 1: Measuring Voltage Between USB Port Power Supply And GND
Courtesy of MAZDA MOTORS CORP.

If the voltage is from 4.75 V to 5.25 V:
- The USB power outlet is normal.
If the voltage is less than 4.75 V or higher than 5.25 V:
- Replace the USB power outlet. (See USB POWER OUTLET REMOVAL/INSTALLATION .)