Evaporator Sensor: Inspection

WARNING: This page is about a different variant/trim than selected.

Prepare the vehicle.
NOTE: Check that the ambient temperature is 25 - 40°C (77 - 104°F) and that the humidity is 30 - 80%.
- Place the vehicle in the workshop or in the shade and windless condition.
- Open all windows.

Set the vehicle to the following conditions.

Item	Condition
READY	ON
Air vent grille	Shutter is fully open.
A/C switch	OFF
Temperature adjustment dial	LO (MAX COOL)
FRESH/RECIRC switch	RECIRC
Air flow control dial	VENT
Fan dial	5/7 level

Using the Subaru Select Monitor, check the evaporator sensor.
1. Using the Subaru Select Monitor, select [Evaporator Temperature Target] from the Data Monitor item list of [Air Conditioner]. Ref. to AIR CONDITIONER (DIAGNOSTICS) (HEV)>DATA MONITOR .
2. Turn READY ON for 15 minutes, and then compare the outlet temperature with [Evaporator Temperature Target].
  Preparation tool:
  
  Thermometer and hygrometer
  
  NOTE: For outlet opening temperature, measure the average temperature of center grille assembly and side grille assembly.
3. Is the difference between outlet opening temperature and [Evaporator Temperature Target] by 3°C (5.4°F) or more?
  - Yes → Go to step 4.
  - No → Evaporator sensor is normal.

Check the evaporator sensor.

Disconnect the connector.

Measure the resistance between connector terminals.

Preparation tool:

Circuit tester

G08546108

Courtesy of SUBARU OF AMERICA, INC.

Terminal No.	Inspection conditions	Standard
1 - 2	-20°C (-4°F)	13.584 - 14.541 kΩ
	-15°C (5°F)	10.34 - 10.946 kΩ
	-10°C (14°F)	7.938 - 8.313 kΩ
	-5°C (23°F)	6.143 - 6.366 kΩ
	0°C (32°F)	4.79 - 4.914 kΩ
	5°C (41°F)	3.718 - 3.829 kΩ
	10°C (50°F)	2.889 - 3.031 kΩ
	15°C (59°F)	2.247 - 2.435 kΩ
	20°C (68°F)	1.785 - 1.952 kΩ
	25°C (77°F)	1.427 - 1.574 kΩ
	30°C (86°F)	1.149 - 1.278 kΩ
	35°C (95°F)	0.931 - 1.044 kΩ
	40°C (104°F)	0.759 - 0.858 kΩ

Is the resistance within the standard?
- Yes → Evaporator sensor is normal.
- No → Replace the evaporator sensor.