DTC B1234 sets if In-Car temperature sensor signal is at or over 4.9V for 0.3 seconds.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Voltage check | 1. Open in signal circuit 2. Short to battery in signal circuit 3. Faulty In-Car temperature sensor 4. Faulty A/C Control Unit |
Enable Conditions |
•
Ignition ON | |
Threshold value |
•
Sensor signal is at or over 4.9V for 0.3 seconds | |
Failsafe |
•
Substituded In-Car Temp. = 25℃ (77℉) |
