The automatic transmission fluid(ATF) temperature sensor A is installed in the INHIBITOR SWITCH and fluid(ATF) temperature sensor B is installed in the valve body. The TCM supplies a 5V reference voltage to the sensor, and the output voltage of the sensor changes when the ATF temperature varies.
This DTC is for checking sensor failure. This code is set if the temperture data from Oil Temperture sensor is fixed between -20℃ and 0℃ or 0℃ and 20℃ for 10min. after driving a vehicle.
Item | Detecting Condition | Possible Cause | |
Case 1 | DTC Strategy |
•
Battery short(After IG On) | ※ ATF T/S :Automatic Transmission Fluid Temperature Sensor
•
Open or shrot to battery in circuit
•
Faulty ATF T/S 1
•
Faulty TCM |
Enable Conditions |
•
Battery Voltage > 10V
•
Oil temperature at IG On >= -38℃ | ||
Threshold Value |
•
Oil temperature sensor voltage Sensor voltage > 4.8V | ||
Case 2 | DTC Strategy |
•
Battery Short(Before IG On) | |
Enable Conditions |
•
Oil temperature at IG On <= -39℃
•
Engine speed > 1000 RPM
•
Output speed >= 500 RPM
•
Engine coolant temperature >= 70℃
•
Delay time 160 sec | ||
Threshold Value |
•
Oil temperature sensor voltage Sensor voltage > 4.8V | ||
Case 3 | DTC Strategy |
•
Open(After IG On) | |
Enable Conditions |
•
Battery Voltage > 10V
•
Oil temperature at IG On >= -38℃ | ||
Threshold Value |
•
Oil temperature sensor voltage Sensor 3.95V < Sensor voltage < 4.8V | ||
Case 4 | DTC Strategy |
•
Open(Before IG On) | |
Enable Conditions |
•
Oil temperature at IG On <= -39℃
•
Engine speed > 1000 RPM
•
Output speed >= 500 RPM
•
Engine coolant temperature >= 70℃
•
Delay time 160 sec | ||
Threshold Value |
•
Oil temperature sensor voltage Sensor 3.95V < Sensor voltage < 4.8V | ||
Diagnostic Time |
•
More than 2sec. | ||
Fail Safe |
•
OTS2 temperature(If OTS2 is error, 80['C] is fixed)
•
Shift prevention over 4th gear
•
Prevention of manual shift
•
Prevention of pressure adaptation | ||
Temperature(℃) | Resistance(KΩ) | Voltage(V) | |
ATF T/S 1 | 0℃ | Approx. 15KΩ | Approx. 3.3V |
20℃ | Approx. 6.5KΩ | Approx. 2.7V | |
80℃ | Approx. 0.9KΩ | Approx. 0.9V | |
ATF T/S 2 | 0℃ | Approx. 10.5KΩ | Approx. 3.3V |
20℃ | Approx. 4.3KΩ | Approx. 2.5V | |
80℃ | Approx. 0.5KΩ | Approx. 0.7V |
