Guide on how to Access the Pilot Quantity Learning Values Reset in the OBD Scanner
The PQLV reset is a critical process for diesel engines, particularly in Toyota vehicles, that recalibrates the Engine Control Unit (ECU) for optimal fuel injection timing and quantity during pilot injection. This reset is essential when:
* Fuel injectors are replaced
* The engine undergoes significant maintenance that alters its fuel injection characteristics
**Why it’s necessary:**
The PQLV reset ensures the engine operates efficiently, maintaining:
* Optimal performance
* Reduced emissions
* Smooth idling
* Preventing excessive smoke output
**How it works:**
Using a diagnostic tool, the process clears previous learning values from the ECU, allowing it to learn new injector behaviors and adjust fuel delivery accordingly.
**Importance:**
The PQLV reset adapts the engine’s performance to changes in its mechanical parts, ensuring:
* Reliability
* Longevity
* Preventing premature wear and tear
**When to perform:**
It’s recommended to perform a PQLV reset after:
* Injector replacement
* Significant engine repairs
* Detecting fault codes related to fuel injection
By performing a PQLV reset, you can ensure your diesel engine runs smoothly, efficiently, and reliably, while also preventing potential issues down the road.
Instruction to Access the Pilot Quantity Learning Values Reset in the OBD Scanner
ThePilot Quantity Learning Values Reset can be accessed by following this instruction.
- Open your OBD scanner.
- Select Local Diagnose if you are using Launch X431.
- Select Car Brand Select Model (auto-detect is better to detect the vehicle VIN).
- Select and check the following: ECMECT (Engine and ECT), ECM (Engine Control Module)
- Select Special Function Then click Pilot Quantity Learning Values Reset then follow the screen instruction.
The sample car model with this feature is the Toyota Hilux 2017.