Ambient Sensor (Auto A/C Model): Inspection

Preparation tool: Circuit tester 

1. Visually check the ambient sensor for dirt or damage, and clean or replace as necessary.
2. Check the resistance between ambient sensor terminals.
   CAUTION: During inspection, be careful not to touch the sensor end in order to avoid misjudgment due to body temperature.
   Fig 1: Checking Resistance Between Ambient Sensor Terminals

   Courtesy of SUBARU OF AMERICA, INC.

   Terminal No.	Inspection conditions	Standard
   1 - 2	10°C	3.12 - 3.70 kΩ
   	15°C	2.49 - 2.88 kΩ
   	20°C	2.00 - 2.26 kΩ
   	25°C	1.62 - 1.79 kΩ
   	30°C	1.32 - 1.42 kΩ
   	35°C	1.08 - 1.14 kΩ
   	40°C	0.89 - 0.92 kΩ
   	45°C	0.74 - 0.75 kΩ
   	50°C	0.62 - 0.62 kΩ
   	55°C	0.52 - 0.51 kΩ
   	60°C	0.44 - 0.42 kΩ

3. Replace the ambient sensor if the inspection result is not within the standard value.