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.
Active Test: List
| Active test items | 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 relay can be set. | |
| A/C Compressor Relay | ON/OFF of the A/C relay can be set. | |
| Evaporative Leak Control Module switching valve | ON/OFF of the leak check valve assembly switching valve can be set. | |
| Evaporative Leak Control Module 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 | Idle ignition timing can be set. | 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 |
| Alternator control | Alternator control mode can be set to one of the followings: Low mode Middle mode High mode ExHigh mode |
Idling |
| Active Grille Shutter Control* | Open →← close of the active grille shutter can be set. |
|
| Compression monitor | Compression can be measured. |
|
*: After replacing ECM or active grille shutter, be sure to perform this procedure.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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