DTC U3003:16 [Connectivity Master Unit]: Notes
DTC U3003:16 (CONNECTIVITY MASTER UNIT) DETECTION CONDITION AND POSSIBLE CAUSES
| Description |
Low ACC power supply voltage input to connectivity master unit (CMU) |
| Detection condition |
- The connectivity master unit (CMU) detects ACC power supply circuit voltage of 8.0 ± 0.8 V or less for 10 s or more with the ignition switched to ACC or ON (engine off or on).
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| Fail-safe |
Not applicable |
| Possible cause |
- DTCs are stored in the PCM.
- Battery malfunction
- Generator malfunction
- Connectivity master unit (CMU) connector or terminal malfunction
- Connectivity master unit (CMU) ACC power supply circuit malfunction
- Short to ground in wiring harness between MIRROR 7.5 A fuse and connectivity master unit (CMU) terminal 2Q
- MIRROR 7.5 A fuse malfunction
- Open circuit in wiring harness between ACC relay and connectivity master unit (CMU) terminal 2Q
- Connectivity master unit (CMU) malfunction
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