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 terminals "+" and "-" of the evaporator temperature sensor.

   

   Specification

   Evaporator Core Temperature [°C (°F)]	Resistance [kΩ]	Voltage [V]
   -10 (14)	8.12	3.16
   0 (32)	4,85	2,53
   10 (50)	2,96	1,92
   20 (68)	1,87	1,41
   30 (86)	1,21	1,02
   40 (104)	0,81	0,73

   
   

   

   1. Evaporator Sensor (+)

   2. Sensor Ground

Diagnosis Using GDS

1. 1
   The heating, ventilation and air conditioning system can quickly diagnose faulty components using the Generic Diagnostic System (GDS). The diagnostic system (GDS) provides the following information: (1) Self-diagnosis: Diagnostic Trouble Code (DTC) check and display. (2) Current data: Checking the input/output status of the system. (3) Actuation test: Checking 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 status. The input/output data for sensors corresponding to the evaporator temperature sensor can be checked.

   

Replacement

1. 1
   Disconnect the negative (-) battery terminal.
2. 2
   Remove the evaporator core. (Refer to Heater - "Evaporator Core")
3. 3
   Pull the evaporator temperature sensor (A) out of the evaporator core.

   

4. 4
   Install in the reverse order of removal.