Evaporator Sensor: Inspection

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

Set the vehicle to the following conditions.

Item	Condition
Engine	Idling
Air vent grille	Full open
A/C switch	OFF
Temperature setting	LO (MAX COOL)
FRESH/RECIRC position	RECIRC
Air flow control position	VENT
Fan speed	HI (MAX)

Using the Subaru Select Monitor, check the evaporator sensor.
1. Display [Evaporator Temperature Target] on the [Data monitor] of [Air Conditioner]. Ref. to COMMON (DIAGNOSTICS)>DATA MONITOR .
2. Idle the engine for 15 minutes, and then compare the air flow outlet temperature with [Evaporator Temperature Target].
  NOTE: For outlet opening temperature, measure the average temperature of center grille assembly and side grille assembly using a thermometer.
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.

G13951668

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.