DTC B1A63-12; B1A63-13; B1A64-12; B1A64-13; Solar Radiation Sensor (RH) And (LH) Circuits Short To Power Supply Or Circuit Open: Notes

DTC DETECTION DESCRIPTION

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 function	Malfunction determined when ignition switched ON The solar radiation sensor input value is fixed at the value directly before the malfunction only when the valve is 4.9 V or more. Malfunction already exists when ignition switched ON Solar radiation sensor value is fixed at 0 W/m² .
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 the following terminals: Climate control unit terminal 1C-solar radiation sensor terminal A Climate control unit terminal 1H-solar radiation sensor terminal C Climate control unit terminal 1F-solar radiation sensor terminal B Short to power supply in wiring harness between the following terminals: Climate control unit terminal 1C-solar radiation sensor terminal A Climate control unit terminal 1H-solar radiation sensor terminal C Climate control unit terminal 1F-solar radiation sensor terminal B Climate control unit malfunction