Unit Inspection

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Preparation tool: Circuit tester

Visually check the ambient sensor for dirt or damage, and clean or replace as necessary.

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	5.82 - 6.18 kΩ
	15°C	4.58 - 4.87 kΩ
	20°C	3.64 - 3.86 kΩ
	25°C	2.91 - 3.09 kΩ
	30°C	2.35 - 2.49 kΩ
	35°C	1.9 - 2.02 kΩ
	40°C	1.56 - 1.65 kΩ
	45°C	1.28 - 1.36 kΩ
	50°C	1.06 - 1.12 kΩ
	55°C	0.88 - 0.93 kΩ
	60°C	0.74 - 0.78 kΩ

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