DTC U3000-49: Connectivity Master Unit (CMU) Internal Malfunction
U3000-49: (CMU) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Connectivity master unit (CMU) internal malfunction |
| Detection condition |
- When the connectivity master unit (CMU) communicates with each system, it detects a communication error or an error signal and the connectivity master unit (CMU) does not activate.
|
| Fail-safe |
- The accuracy of the vehicle position positioning decreases, and the vehicle position on the navigation screen is not indicated in the correct direction.
- Malfunction cannot be determined.
- No audio output.
- Emergency call voice not recognized.
- Multiple audio mixed together.
- Images not output.
- Images do not change.
- External device cannot be connected.
- Connected device cannot be operated.
|
| Possible cause |
- Connectivity master unit (CMU) malfunction (Refer to CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION
in service information.)
|
| Repeatability verification procedure |
- Clear the DTC recorded in the memory. (See
CLEARING DTC
.)
- Switch the ignition off/main power OFF.
- Switch the ignition ON (engine off or on)/main power ON (READY off or on) and wait for 30 s or more.
|
| System wiring diagram |
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