DTC U0184:00 [Connectivity Master Unit]: Notes
DTC U0184:00 (CONNECTIVITY MASTER UNIT) DETECTION CONDITION AND POSSIBLE CAUSES
| Description |
Communication error with tuner and amp unit (TAU) |
| Detection condition |
- The connectivity master unit (CMU) cannot receive a CAN signal from the tuner and amp unit (TAU) for 5 s or more.
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| Fail-safe |
Not applicable |
| Possible cause |
- Connectivity master unit (CMU) connector or terminal malfunction
- Tuner and amp unit (TAU) connector or terminal malfunction
- Connector C-58 connector or terminal malfunction
- Short to power supply in wiring harness between the following terminals:
- Connectivity master unit (CMU) terminal 2I-Tuner and amp unit (TAU) terminal 2O
- Short to ground in wiring harness between the following terminals:
- Connectivity master unit (CMU) terminal 2J-Tuner and amp unit (TAU) terminal 2Q
- Short between circuits in the following wiring harness:
- Connectivity master unit (CMU) terminal 2I-Tuner and amp unit (TAU) terminal 2O
- Connectivity master unit (CMU) terminal 2J-Tuner and amp unit (TAU) terminal 2Q
- Open circuit in wiring harness between the following terminals:
- Connectivity master unit (CMU) terminal 2I-Connector C-58
- Connectivity master unit (CMU) terminal 2J-Connector C-58
- Tuner and amp unit (TAU) terminal 2O-Connector C-58
- Tuner and amp unit (TAU) terminal 2Q-Connector C-58
- Open circuit in wiring harness between the following terminals:
- Tuner and amp unit (TAU) terminal 2W-Body ground
- Tuner and amp unit (TAU) malfunction
- Connectivity master unit (CMU) malfunction
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CAUTION:
- When disconnecting the connector, verify that there is no looseness, damage, deformation, corrosion, or poor connection of the connector terminals.