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

Subaru Legacy BN/BS (2015-2019) Service Manual / Continuously variable transmission(tr580) / Secondary speed sensor / Inspection

1. Disconnect the ground terminal from battery sensor. NOTE

2. Remove the clip (A), and loosen the clamps (B) and (C).

3. Remove the air intake boot, and move it to the left side wheel apron.

4. Disconnect the transmission radio ground terminal and transmission harness connector, and remove the harness clip.

(A)	Transmission radio ground terminal
(B)	Transmission harness connectors
(C)	Harness clip

5. Remove the transmission case cover.

6. Move the lock lever in the arrow direction while pressing the lock button, and disconnect the connector.

(A)	Lock button

7. Set the ST between TCM and transmission harness. General Description > CAUTION

ST 18460AA040

CHECK BOARD

8. Connect the transmission radio ground terminal and transmission harness connector, and install the harness clip.

Tightening torque:

13 N·m (1.3 kgf-m, 9.6 ft-lb)

9. Install the air intake boot assembly. Air Intake Boot > INSTALLATION

10. Connect the ground terminal to battery sensor. NOTE

11. Set the probe of oscilloscope to the check board connector.

Connector & terminal:

(B54) No. 13 (+) — No. 26 (−):

(A)	+ probe
(B)	− probe

12. Start and warm up the engine.

13. Lift up the vehicle.

CAUTION:

Lift up the vehicle until the tire bottom is 0.3 m (0.98 ft) or more above the ground.

14. Shift the select lever to “D” range.

15. Check the waveform and output voltage of the secondary speed sensor with engine idling.

NOTE:

The waveform cycle changes as the speed changes.

Removal

CAUTION:• Be sure to prevent water or oil from contacting the connector terminal of secondary speed sensor. If adhesion occurs, replace with a new part.• When secondary speed sensor is rem ...

Installation

CAUTION:• Be sure to prevent water or oil from contacting the connector terminal of secondary speed sensor. If adhesion occurs, replace with a new part.• After installing the secondary spe ...

Other materials:

Dtc p013f o2 sensor delayed response - lean to rich bank 1 sensor 2
NOTE:For the diagnostic procedure, refer to DTC P013A. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P013A O2 SENSOR SLOW RESPONSE - RICH TO LEAN BANK 1 SENSOR 21. OUTLINE OF DIAGNOSISDetect the delayed response of rear oxygen sensor output for lean > rich.After the deceleration fue ...