| System malfunction location |
- U101C:00: Radar sensor communication error
- U101D:00: Error signal received from radar sensor
- U1A00:88: CAN communication error (Bus off)
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| Detection condition |
- Communication error between radar sensor and vehicle control module (V/C-module)
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| Fail-safe |
- Inhibits the Mazda radar cruise control (MRCC) system control
- Inhibits the forward obstruction warning (FOW) system control
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| Possible cause |
- Connector or terminal malfunction
- Short circuit to power supply or ground in wiring harness between radar sensor and vehicle control module (V/C-module)
- Open circuit in wiring harness between radar sensor and vehicle control module (V/C-module)
- Radar sensor malfunction
- Vehicle control module (V/C-module) malfunction
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