The A/C Control Module sets DTC B1281 if The signal from Auto defogger humidity sensor is signal is at or below 0.1V for 0.3 seconds.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Voltage check | 1. Poor connection in harness 2. Open or short in signal circuit 3. Open or short in power circuit 4. Faulty Auto defogger humidity sensor 5. A/C Control Module |
Enable Conditions |
•
Ignition "ON" | |
Threshold value |
•
Feedback signal has been detected open or below 0.1V for 0.3 seconds | |
Failsafe |
•
A/C Control Module Controls humidity as 0% |
