Evaporator Temperature Sensor Repair Procedures

Inspection

1. 1
   Turn the ignition off.
2. 2
   Disconnect the evaporator temperature sensor connector.
3. 3
   Measure the resistance between the "+" and "-" terminals of the evaporator temperature sensor.

   

   Specification

   Evaporator Core Temperature [°C (°F)]	Resistance [kΩ]	Voltage [V]
   -10 (14)	17,93	3.21
   0 (32)	11.36	2,66
   10 (50)	7.4	2.13
   20 (68)	4,94	1,66
   30 (86)	3,37	1,26
   40 (104)	2,35	0,95

   
   

   

   1. Sensor Ground

   2. Evaporator Sensor (+)

Diagnosis Using GDS

1. 1
   The heating, ventilation, and air conditioning system faults can be quickly diagnosed using the Global Diagnostic System (GDS). ※ The GDS provides the following information: (1) Self-diagnosis: Check and display of diagnostic trouble codes (DTC). (2) Current data: Check the input/output status of system data. (3) Active test: Check the operating status of the system. (4) Additional functions: Other controls such as system option and zero point adjustment.
2. 2
   Select "Vehicle Model" and the system to be checked to inspect the vehicle with the tester.
3. 3
   Select the "Current Data" menu to check the current input/output data status. The input/output data for the sensors related to the evaporator temperature sensor can be checked.

   

Replacement

1. 1
   Disconnect the negative (-) battery terminal.
2. 2
   Remove the heater and blower unit from the protective cover after loosening the mounting nuts. (Refer to Heater - "Heater")
3. 3
   Remove the evaporator core cover (A) after loosening the mounting screws.

   

4. 4
   Pull out the evaporator core (A) from the heater unit.

   

5. 5
   Remove the evaporator temperature sensor (A) from the evaporator core.

   

6. 6
   To install, reverse the removal procedure.