DTC B1A63-12: B1A63-13: B1A64-12: B1A64-13: Solar Radiation Sensor Circuit: Notes

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

System malfunction location	B1A63:12: Solar radiation sensor (RH) circuit short to power supply B1A63:13: Solar radiation sensor (RH) circuit open B1A64:12: Solar radiation sensor (LH) circuit short to power supply B1A64:13: Solar radiation sensor (LH) circuit open
Detection condition	Malfunction in wiring harness between solar radiation sensor and climate control unit
Fail-safe	Malfunction determined when IG SW at ON The solar radiation sensor input value is fixed at the value directly before the malfunction only when the valve is 1, 450 W/m ² or more. Malfunction already exists when IG SW turned to ON Solar radiation sensor value is fixed at 0 W/m ² .
Possible cause	Connector or terminal malfunction Light amount shone on the solar radiation sensor is insufficient (Circuit is normal) Solar radiation sensor malfunction Open circuit in wiring harness between climate control unit and solar radiation sensor Short to power supply in wiring harness between climate control unit and solar radiation sensor Climate control unit malfunction