DTC B1B71-11; B1B71-13; Evaporator Temperature Sensor Circuit Short To Ground Or Circuit Open: Notes

DTC DETECTION DESCRIPTION

System malfunction location	B1B71:11: Evaporator temperature sensor circuit short to ground B1B71:13: Evaporator temperature sensor circuit open
Detection condition	Malfunction in wiring harness between evaporator temperature sensor and climate control unit
Fail-safe function	A/C output OFF is controlled when the evaporator temperature sensor input value is at 0 °C {32 °F}.
Possible cause	Connector or terminal malfunction Evaporator temperature sensor malfunction Open circuit in wiring harness between the following terminals: Climate control unit terminal 1E-evaporator temperature sensor terminal B Climate control unit terminal 1Q-evaporator temperature sensor terminal A Short to ground in wiring harness between the following terminals: Climate control unit terminal 1E-evaporator temperature sensor terminal B Climate control unit malfunction