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.
2020 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
Engine Wiring Harness: Installation
- Install the harness stay.
Tightening torque:
7.5 N.m (0.8 kgf-m, 5.5 ft-lb)
- Set the engine wiring harness to the engine, and connect the connector.NOTE:
- If the clip is damaged, replace it with a new part.
- Before replacing the clip, put an alignment mark (a) on both engine wiring harness and clip to remove the clip, and then align to the alignment mark (a) to attach a new clip to the engine wiring harness.
- Install the engine wiring harness.
Tightening torque:
19 N.m (1.9 kgf-m, 14.0 ft-lb)
- Install the engine control module (ECM). Refer to FUEL INJECTION (FUEL SYSTEMS) (W/O STI)>ENGINE CONTROL MODULE (ECM)>INSTALLATION .
- Install the fuel insulator. Refer to FUEL INJECTION (FUEL SYSTEMS) (W/O STI)>FUEL INSULATOR>INSTALLATION .
- Install the intake manifold. Refer to FUEL INJECTION (FUEL SYSTEMS) (W/O STI)>INTAKE MANIFOLD>INSTALLATION .
- Connect the ground terminal to battery sensor. Refer to NOTE>NOTE>BATTERY .
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.