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

Subaru Legacy BN/BS (2015-2019) Service Manual / Fuel injection (fuel systems)(h4do) / Camshaft position sensor / Inspection

1. CAMSHAFT POSITION SENSOR

1. Disconnect the ground terminal from battery sensor. NOTE

2. Prepare an oscilloscope.

3. While pressing the section (A) shown in the figure, move the lock lever (B) in the direction of the arrow to disconnect the connectors from the ECM in numerical order as shown in the figure.

4. Attach the ST between the ECM, engine harness and the bulkhead wiring harness. General Description > CAUTION

ST 18460AA050

CHECK BOARD

5. Connect the probe to ST.

(A)

To the check board connector (ECM connector)

Camshaft position sensor	Terminal No.	Probe
RH	54	+
LH	41	+
RH and LH	42	−

6. Start the engine and let it idle.

7. Check the waveforms and voltage.

NOTE:

For waveform and voltage, refer to “Engine Control Module (ECM) I/O Signal”. Engine Control Module (ECM) I/O Signal > ELECTRICAL SPECIFICATION

8. After inspection, install the related parts in the reverse order of removal.

2. OTHER INSPECTIONS

Check that the camshaft position sensor has no deformation, cracks or other damages.

Removal

1. Disconnect the ground terminal from battery sensor. NOTE2. Remove the air intake duct. (RH side only) Air Intake Duct > REMOVAL3. Disconnect the connector (A) from the camshaft position sensor, a ...

Installation

1. Install the camshaft position sensor to the chain cover, and connect the connector to the camshaft position sensor.NOTE:• Use new O-rings.• Apply engine oil to O-ring.Tightening torque: ...

Other materials:

Caution
1. Never connect the battery in reverse polarity.• Doing so may immediately damage the A/C CM.2. Do not disconnect the battery terminals while the engine is running.• A large counter electromotive force will be generated in the generator, and this voltage may damage electronic parts such ...