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.
2022 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE
Active Test: List
| Active test item | Contents | Execution condition |
|---|---|---|
| Fuel Pump Relay | ON/OFF of the fuel pump can be set. | Ignition switch ON (engine OFF) |
| CPC Solenoid Valve | ON/OFF of the purge control solenoid valve can be set. | |
| Radiator Fan Relay | ON/OFF of the radiator fan motor can be set. | |
| ELCM switching valve | ON/OFF of the leak check valve assembly switching valve can be set. | |
| ELCM pump | ON/OFF of the leak check valve assembly vacuum pump can be set. | |
| Fuel Pump Control (OFF Drive) | Fuel pump can be set to OFF. | Idling |
| Fixed Idle Ignition Timing | Ignition timing is set depending on the engine speed. | Idling |
| Idle Speed Control | Idle speed can be set. | Idling |
| Injection Stop Mode (Injector 1) Injection Stop Mode (Injector 2) Injection Stop Mode (Injector 3) Injection Stop Mode (Injector 4) | Injector of each cylinder can be set to stop the fuel injection. | Idling |
| Injection Quantity Control | The amount of fuel injection can be set. | Idling |
| EGR Valve Control (Step) | STEP number of the EGR control valve can be set. | Idling |
| High Pressure Fuel Inspection |
High pressure fuel pipe inspection can be executed. | Idling |
| Alternator control | Alternator control mode can be set to one of the followings: Low mode Middle mode High mode ExHigh mode |
Idling |
| Compression monitor | Compression can be measured. |
|
| Electric Air Bypass Valve Control | Switch OPEN/CLOSE of electronic air by-pass valve every 3 seconds. | Ignition switch ON (engine OFF) |
| Electric Waste Gate Valve Control | Switch OPEN/CLOSE of electronic wastegate valve every 3 seconds. | Ignition switch ON (engine OFF) |
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:
- • 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.
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