USB port inspection

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the following parts:
1. Console up (See REAR CONSOLE REMOVAL/INSTALLATION .)
2. Auxiliary jack/USB port (See AUXILIARY JACK/USB PORT REMOVAL/INSTALLATION .)
Insert the pins to positions UA', UB', UC', and UD' shown in the figure from the side of the USB device insertion area for the auxiliary jack/USB port, and verify the continuity at the insertion side and terminal side of the USB device.

Fig 1: Locating USB Device Insertion Area For Auxiliary Jack/USB Port
Courtesy of MAZDA MOTORS CORP.
Verify that the continuity at the insertion side and terminal side of the USB device is as indicated in the table.
NOTE:
- When inspecting the USB device insertion side, touch it with a paper clip or similar thin pin without directly inserting a tester into the terminals.
  
  Fig 2: Side Of USB Device Terminal Continuity Chart
  Courtesy of MAZDA MOTORS CORP.
- If not as indicated in the table, replace the auxiliary jack/USB port.