The In-Car sensor is located at the right side of the DATC control panel. The In-Car sensor consists of a thermistor that is used by the DATC ECU to determine vehicle interior temperature. The signal,decided by the resistance value which changes in accordance with perceived inside temperature, is delivered to heater control unit. According to this signal, the control unit regulates incar temperature to intended value.
Air conditioner Control Module sets DTC B1233 if Incar temperature sensor has been detected below 0.1V for 4 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 4 seconds | |
Failsafe |
•
Control with the value of 23℃(73.4℉) |
Temperature(℃/℉) | Resistance(㏀) | Temperature(℃/℉) | Resistance(㏀) |
-20/-4 | 285.6 | 20/68 | 37.4 |
-10/-14 | 164.6 | 30/86 | 24.1 |
0/32 | 97.7 | 40/104 | 15.9 |
10/50 | 59.67 | 50/122 | 10.8 |
