Subaru Legacy BN/BS (2015-2019) Service Manual: Inspection

Subaru Legacy BN/BS (2015-2019) Service Manual / Hvac system (heater ventilator and a c) / Ambient sensor / Inspection

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

2. Measure 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.

Preparation tool:

Circuit tester

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

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

Removal

1. Disconnect the ground terminal from battery sensor. NOTE2. Remove the clips, and turn over the mud guard - front.3. Disconnect the connector and remove the ambient sensor. ...

Installation

1. Install the ambient sensor.2. Install the mud guard - front.3. Connect the ground terminal to battery sensor. NOTE ...

Other materials:

Dtc p0073 ambient air temperature sensor circuit "a" high
NOTE:For the diagnostic procedure, refer to DTC P0072. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0072 AMBIENT AIR TEMPERATURE SENSOR CIRCUIT "A" LOW1. OUTLINE OF DIAGNOSISDetect the open or short circuit of ambient temperature sensor.Judge as NG if out of specification.2. COMPO ...