DTC B1237 sets if the Ambient Sensor signal is at or below 0.1V for 0.3 seconds.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Voltage check | 1. Short in signal circuit 2. Faulty Ambient Sensor 3. Faulty A/C control Module |
Enable Conditions |
•
Ignition ON | |
Threshold value |
•
Sensor signal is at or below 0.1V for 0.3 seconds | |
Failsafe |
•
Displayed '--' and A/C control Module regards and controls it as 20℃(68℉) |
