DTC B1A22-2B: Dab Antenna Amplifier Signal Circuit Malfunction: 5HB/WGN: Outline

DTC B1A22-2B: (CONNECTIVITY MASTER UNIT) DETECTION CONDITION AND POSSIBLE CAUSE (5HB/WGN)

System malfunction location	DAB antenna amplifier signal circuit malfunction
Detection condition	The remote tuner (RT) detects a short to ground in the DAB antenna amplifier signal circuit, a short to the power supply, or a short circuit between DAB antenna amplifier signal circuit and mutual shield. (Except e-SKYACTIV EV/e-SKYACTIV R-EV) The remote tuner (RT) detects a short to ground in the DAB antenna amplifier signal circuit, a short to the power supply, or a short circuit between DAB antenna amplifier signal circuit and mutual shield for 2 s. (e-SKYACTIV EV/e-SKYACTIV R-EV)
Fail-safe	Not applicable
Possible cause	Antenna amplifier connector or terminal malfunction Remote tuner (RT) connector or terminal malfunction DAB antenna amplifier feeder malfunction Short to ground in DAB antenna amplifier signal circuit Short to power supply in DAB antenna amplifier signal circuit Short to DAB antenna amplifier signal circuit and mutual shield Antenna amplifier malfunction DAB antenna amplifier malfunction Remote tuner (RT) malfunction
Courtesy of MAZDA MOTORS CORP.
1: Without DAB antenna amplifier 2: With DAB antenna amplifier