DTC U0186-00: Communication Error With Audio Amplifier [Connectivity Master Unit]: 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 U0186:00 (CONNECTIVITY MASTER UNIT) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Communication error with audio amplifier |
| Detection condition |
- The connectivity master unit (CMU) detects a communication interruption or communication error with the audio amplifier for approx. 6 s.
|
| Fail-safe |
Not applicable |
| Possible cause |
- Connectivity master unit (CMU) malfunction
- Audio amplifier connector or terminal malfunction
- Malfunction in connectivity master unit (CMU) connector or terminal
- Short to ground in audio amplifier CAN communication circuit
- Short to power supply in audio amplifier CAN communication circuit
- Open circuit in audio amplifier CAN communication circuit
- Short circuit between audio amplifier CAN communication circuits
- Audio amplifier malfunction
|
 Courtesy of MAZDA MOTORS CORP.
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Without Bose®
With Bose® |