With Bose®: Outline
WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
DTC U0186:08 (CONNECTIVITY MASTER UNIT - US) DETECTION CONDITION AND POSSIBLE CAUSE - WITH BOSE®
| System malfunction location |
Communication error with audio amplifier |
| Detection condition |
- The connectivity master unit (CMU) detects a communication error with the audio amplifier.
|
| Fail-safe |
Not applicable |
| Possible cause |
- Audio amplifier connector or terminal malfunction
- Connectivity master unit (CMU) connector or terminal malfunction
- Short to ground or open circuit in audio amplifier power supply circuit
- Open circuit in audio amplifier ground circuit
- Short to power supply, short to ground or open circuit in MOST WAKE UP circuit
- Short to power supply, short to ground or open circuit in MOST communication circuit
- MOST communication circuit shield wire malfunction
- Audio amplifier malfunction
- Connectivity master unit (CMU) malfunction
|
 Courtesy of MAZDA MOTORS CORP.
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