The In Car Tenperature Sensor contains a thermistor which measures the temperature of the inside the vehicle. The signal, based on the resistance value, is delivered to the HVAC control unit. This information is used to control the vent output temperature.
Air conditioner Control Module sets DTC B1233 if Incar temperature sensor has been detected below 0.1V for 0.3 seconds.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Voltage check |
•
Short circuit in harness
•
Faulty incar temp.sensor
•
Faulty A/C Control Unit |
Enable Conditions |
•
IG KEY ON | |
Threshold value |
•
Incar temperature sensor has been detected 0.1V for 0.3 seconds | |
Failsafe |
•
Control with the value of 25℃(77℉) |
Temperature(℃/℉) | Resistance(㏀) | Temperature(℃/℉) | Resistance(㏀) |
-20/-4 | 285.6 | 20/68 | 37.4 |
-10/14 | 169 | 30/86 | 24.1 |
0/32 | 97.7 | 40/104 | 15.9 |
10/50 | 59.67 | 50/122 | 10.8 |
