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

Subaru Legacy BN/BS (2015-2019) Service Manual / Fuel injection (fuel systems)(h4do) / Engine coolant temperature sensor / Inspection

1. Check that the engine coolant temperature sensor has no deformation, cracks or other damages.

2. Immerse the engine coolant temperature sensor and a thermometer in water.

CAUTION:

Take care not to allow water to get into the engine coolant temperature sensor connector. Completely remove any water inside.

(A)

Thermometer

(B)

Engine coolant temperature sensor

(C)

Hexagonal part height: To approx.1/3

3. Raise water temperature gradually, measure the resistance between the engine coolant temperature sensor terminals when the temperature is 20°C (68°F) and 80°C (176°F).

NOTE:

Agitate the water for even temperature distribution.

Water temperature	Terminal No.	Standard
20°C (68°F)	1 and 2	Approx. 2.45+0.14 −0.13 k-
80°C (176°F)	1 and 2	Approx. 0.318±0.008 k-

Removal

1. Disconnect the ground terminal from battery sensor. NOTE2. Drain engine coolant. Engine Coolant > REPLACEMENT3. Disconnect the connector (A) from the engine coolant temperature sensor, and remove ...

Installation

1. Install the engine coolant temperature sensor, and connect the connector to the engine coolant temperature sensor.NOTE:Use a new gasket.Tightening torque:18 N·m (1.8 kgf-m, 13.3 ft-lb)2. Con ...

Other materials:

Removal
1. Disconnect the ground terminal from battery sensor. NOTE2. Remove the arm assembly - windshield wiper. Front Wiper Arm > REMOVAL3. Remove the cowl panel - side and the cowl panel assembly. Cowl Panel > REMOVALCAUTION:Before removing the cowl panel, use an air blower and nylon brush to sweep gr ...