The A/C Control Module sets DTC B1237 if the Ambient Temperature Sensor signal is at or below 0.1V for 0.3 seconds.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Voltage check | 1. Poor connection of connected part 2. Short circuit in signal harness 3. Faulty Ambient Temperature Sensor 4. 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℉) |
