The Evaporator sensor is located on the AC/heater boxand it detects the evaporator core temperature. When the core temperature is below the threshold value, the A/C ECU interrupts the compressor relay in order to prevent evaporator freezing.
The Air conditioner Control Module sets DTC B1241 if Evaporator 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 Evaporator sensor
•
Faulty A/C Control Unit |
Enable Conditions |
•
IG KEY ON | |
Threshold value |
•
Evaporator sensor has been detected below 01.V for 0.3 seconds. | |
Failsafe |
•
Control with the value of -2℃(28.4℉) |
Temperature(℃/℉) | Resistance(㏀) | Temperature(℃/℉) | Resistance(㏀) |
-10/-14 | 43.3 | 20/68 | 12.1 |
0/32 | 27.6 | 30/86 | 8.3 |
10/50 | 18 | 40/104 | 5.8 |
