DTC B1081-71; B1082-71: Climate Control Unit (Full-Auto Air Conditioner): Notes
WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DTC B1081:71, B1082:71 (CLIMATE CONTROL UNIT - FULL-AUTO AIR CONDITIONER) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
- B1081:71: Driver-side air mix actuator motor lock
- B1082:71: Passenger-side air mix actuator motor lock
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| Detection condition |
- Air mix actuator motor lock
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| 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.
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| 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:
Driver-side
- Climate control unit terminal 1N-Air mix actuator terminal G
- Climate control unit terminal 2G-Air mix actuator terminal F
- Climate control unit terminal 1J-Air mix actuator terminal E
- Climate control unit terminal 2D-Air mix actuator terminal B
- Climate control unit terminal 2B-Air mix actuator terminal C
Passenger-side
- Climate control unit terminal 1N-Air mix actuator terminal E
- Climate control unit terminal 2E-Air mix actuator terminal F
- Climate control unit terminal 1J-Air mix actuator terminal G
- Climate control unit terminal 2F-Air mix actuator terminal C
- Climate control unit terminal 2H-Air mix actuator terminal B
- Short to ground in wiring harness between the following terminals:
Driver-side
- Climate control unit terminal 1N-Air mix actuator terminal G
- Climate control unit terminal 2G-Air mix actuator terminal F
- Climate control unit terminal 2D-Air mix actuator terminal B
- Climate control unit terminal 2B-Air mix actuator terminal C
Passenger-side
- Climate control unit terminal 1N-Air mix actuator terminal E
- Climate control unit terminal 2E-Air mix actuator terminal F
- Climate control unit terminal 2F-Air mix actuator terminal C
- Climate control unit terminal 2H-Air mix actuator terminal B
- Short to power supply in wiring harness between the following terminals:
Driver-side
- Climate control unit terminal 1N-Air mix actuator terminal G
- Climate control unit terminal 2G-Air mix actuator terminal F
- Climate control unit terminal 1J-Air mix actuator terminal E
- Climate control unit terminal 2D-Air mix actuator terminal B
- Climate control unit terminal 2B-Air mix actuator terminal C
Passenger-side
- Climate control unit terminal 1N-Air mix actuator terminal E
- Climate control unit terminal 2E-Air mix actuator terminal F
- Climate control unit terminal 1J-Air mix actuator terminal G
- Climate control unit terminal 2F-Air mix actuator terminal C
- Climate control unit terminal 2H-Air mix actuator terminal B
- Climate control unit malfunction
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