How to Diagnose Volvo FM440 Truck Engine Performance by Volvo PTT

This instruction show you guide on how to use Volvo PTT to diagnose engine performance for Volvo FM440 truck.



2024 Volvo  TechTool PTT 2.8.241 APCI All Version Free Download

Volvo Diagnostic Kit (88890300)

Volvo VOCOM 88890300 Diagnostic Kit


Diagnose Volvo FM440 Truck Engine Performance by Volvo PTT:

Connect Volvo PTT interface (VOCOM recommend) to FM440 truck DLC and then run Volvo PTT

After then select “Test”–>”28-Ignition and control system”–>”Sensor Values,Monitoring”

After then click “Start” button


The operation exists in several variants.

Select the variant that corresponds to the connected vehicle/machine.

Here select “D13A” and click “OK”


The purpose of this test is to check that the sensors give plausible values.Evaluation of the sensor value is best done on an engine at normal working temperature,at low idle with the vehicle stationary.The test can also be used to check the sensor values under other conditions.

When it access this window,click “Play” button and check the conditions requested.


After then the screen will display the value of the sensors on the Engine.

Here are “Fuel Supply Pressure”,”Boost Pressure”,”Intake Manifold Temperature”….and others


For maximum results,this check must be carried out at the engine working temperature and engine position when low idle

So the purpose of “Sensor Values Monitoring…” is to check or evaluate the values displayed by the sensor.

For “Crankcase Pressure Sensor”,the maximum normal value is 1KPa


For the alarm limit,which is 8 kPa.

If you need newest Volvo PTT Software check it here:

2022 Volvo PTT 2.8.120+Devtool+ACPI Plus 2022/03 Installation

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