DTC B13AA-71; Air Mix Actuator Motor Lock: Notes

DTC DETECTION DESCRIPTION

System malfunction location	Air mix actuator motor lock
Detection condition	After the air mix actuator drive signal is output, the air mix actuator does not stop within the target air mix actuator opening angle range for a continuous 20 s or more.
Fail-safe function	Malfunction determined when ignition switched ON Air mix actuator drive signal is stopped right when the malfunction is determined. Malfunction already exists when ignition switched ON Twenty seconds after the ignition is switched ON, the air mix actuator drive signal is output normally again. Afterwards, motor output is stopped during malfunction determination.
Possible cause	Connector or terminal malfunction Air mix actuator malfunction A/C unit (air mix link) malfunction Open circuit in wiring harness between the following terminals: Climate control unit terminal L-air mix actuator terminal E Climate control unit terminal I-air mix actuator terminal F Climate control unit terminal R-air mix actuator terminal G Climate control unit terminal C-air mix actuator terminal B Climate control unit terminal A-air mix actuator terminal C Short to ground in wiring harness between the following terminals: Climate control unit terminal L-air mix actuator terminal E Climate control unit terminal I-air mix actuator terminal F Climate control unit terminal C-air mix actuator terminal B Climate control unit terminal A-air mix actuator terminal C Short to power supply in wiring harness between the following terminals: Climate control unit terminal L-air mix actuator terminal E Climate control unit terminal I-air mix actuator terminal F Climate control unit terminal R-air mix actuator terminal G Climate control unit terminal C-air mix actuator terminal B Climate control unit terminal A-air mix actuator terminal C Climate control unit malfunction