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Home >> Mazda >> 2025 >> CX-5 S Select >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Connectivity Master Unit - Introduction) >> Entertainment System >> Operation >> Navigation function >> Map display, route guidance
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Map display, route guidance

WARNING: This page is about a different car, the 2024 Mazda CX-90. However, it is still accessible from the selected car via links, so may be relevant.
  1. When the connectivity master unit (CMU) receives the operation signal/detects the switch operation, it sends the control signal to the audio amplifier.
  2. The connectivity master unit (CMU) reads the map information of the SD card inserted in the USB port/SD card slot hub. In addition, reception of the position information from the GPS antenna is initiated.
  3. The connectivity master unit (CMU) sends the navigation screen display signal (GMSL signal) to the center display based on the SD card map information and the position information from the GPS antenna.
  4. The center display displays the navigation screen based on the received navigation screen display signal (GMSL signal).
  5. The connectivity master unit (CMU) detects the route to the destination set by the user and sends the guidance audio signal to the audio amplifier after deciding the route.
  6. The audio amplifier sends the guidance audio signal to the speakers and the speakers output the guidance audio.
G16716874Courtesy of MAZDA
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