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:

Inspection
1. Measure the resistance between connector terminals.Preparation tool:Circuit testerConnectorTerminal No.Inspection conditionsStandard(a)1 — 3OpenLess than 1 -4 — 3CloseLess than 1 -(b)1 — 3Tilt downLess than 1 -4 — 3Tilt upLess than 1 -2. Replace the sunroof switch if the inspection result ...