Starting Procedure For Diagnostic Function

Turn the ignition switch to the ACC or ON position.
Press the MENU button.
Select "Setup Menu".
Select "System Information".
Press the joystick up two times , then down two times .
"Wiring Check" and "GPS" are displayed on the screen.

Fig 1: View Of System Information Display
Courtesy of MAZDA MOTORS CORP.
Select the "Wiring Check".

Fig 2: Locating GPS Display

Courtesy of MAZDA MOTORS CORP.

Fig 3: Locating Wiring Check Display

Courtesy of MAZDA MOTORS CORP.

Fig 4: Display Item Description Chart

Courtesy of MAZDA MOTORS CORP.