Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2019 Subaru Forester BaseFACTORY OEM SERVICE PROCEDURE
Secondary Speed Sensor: Inspection
- Check for oil leaks.
- Check the output waveform and output voltage of the secondary speed sensor.
- Disconnect the ground cable from battery. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
- Remove the clip from the air intake boot, and loosen the clamp.
- Remove the air intake boot, and place it aside so that it does not interfere with the work.CAUTION: Be careful not to pull out the PCV hose.
- Disconnect the ground cord.
- Remove the pitching stopper. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>TRANSMISSION MOUNTING SYSTEM>REMOVAL>PITCHING STOPPERΒ .
- Remove the transmission case cover (front).
- Move the lock lever in the arrow direction while pressing the lock button (A), and disconnect the connector.
- Set the ST between the TCM and transmission harness. Ref. to TRANSMISSION (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION
.
Special tool:Β
CHECK BOARD (18460AA040)
- Install the air intake boot. Ref. to INTAKE (INDUCTION) (H4DO)>AIR INTAKE BOOT>INSTALLATION .
- Connect the battery ground terminal. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
- Connect the probe of oscilloscope to ST.
Terminal No. Probe 13 + 26 - - Start the engine and warm up completely.
- Lift up the vehicle.WARNING:
- Lift up the vehicle until the tire bottom is 0.3 m (0.98 ft) or more above the ground.
- Make sure that safety is secured where the tiers rotate.
- Turn OFF the pre-collision brake function. (Models with EyeSight)
- Turn the VDC function OFF.
- Release the parking brake.
- Shift the select lever to "D range".
- Release the brake pedal, and rotate the tires.
- Check the output waveforms and output voltage.NOTE: For the output waveform and output voltage, refer to the "TRANSMISSION (DIAGNOSTICS)" information. Ref. to TRANSMISSION (DIAGNOSTICS)>TRANSMISSION CONTROL MODULE (TCM) I/O SIGNAL>WAVEFORM>SENSOR .
- After inspection, install the related parts in the reverse order of removal.
Tightening torque:Β
7 N.m (0.7 kgf-m, 5.2 ft-lb)
Tightening torque:Β
32.3N.m (3.3 kgf-m, 23.8 ft-lb)
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
