FTS(Fuel Temperature Sensor) is located in the engine fuel passage from the fuel tank. It detects the fuel temperature and relays signals to the ECM. It employs a thermistor, which is sensitive to changes in the fuel temperature. The electric resistance of a thermistor decreases as the temperature increases, and increases as the temperature decreases. The power source in the ECM is supplied to the FTS via a resistor in the ECM. It is used during injection control strategies that make corrections depending on the fuel temperature and in order to protect the system in event of excessive fuel temperature. In case of more than FTS 120?(248?), the engine symptom generates the power loss or poor acceleration.
If the FTS sensor is reading an extremely low or high intake air temperature during two driving cycles, these codes will be set
DTC NO.
Detecting Condition
Possible Cause
C 001
C 002
? C 001 : Output signal > 151 mV
? C 002 : Output signal > 4.9 V
? Engine Condition : IG ON
? Fuel Limit : YES
? Fuel Cut : NO
? EGR OFF : NO
? MIL : NO
?LIMP HOME MODE
Fuel temperature is fixed value of 90?(194?) by ECM
? Open or short in circuit
? FTS
? ECM
FTS
Normal Parameter
Temperature
20°C (68?)
40°C (104?)
60°C (140?)
Resistance
2.27 ~2.73 ?
1.06 ~ 1.28 ?
0.54 ~ 0.65 ?