DTC B116A:12 [Connectivity Master Unit]: Notes
DTC B116A:12 (CONNECTIVITY MASTER UNIT) DETECTION CONDITION AND POSSIBLE CAUSES
| Description |
Microphone circuit malfunction |
| Detection condition |
- The connectivity master unit (CMU) detected a short to power supply in the microphone circuit for 5 s or more with the ignition switched ON (engine off or on).
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| Fail-safe |
Not applicable |
| Possible cause |
- Microphone connector or terminal malfunction
- Connectivity master unit (CMU) connector or terminal malfunction
- Short to power supply in wiring harness between the following terminals:
- Connectivity master unit (CMU) terminal 1S and microphone terminal A
- Connectivity master unit (CMU) terminal 1T and microphone terminal B
- Microphone malfunction
- Connectivity master unit (CMU) malfunction
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