FUSO 4M4 – INTAKE AND EXHAUST – ON-VEHICLE INSPECTION AND ADJUSTMENT – Initialization of the DPF-Related Information

• The engine electronic control unit stores the DPF-related information as historical records to facilitate the regeneration of the diesel particulate filter.
• The initialization of the DPF-related information is performed to make the particulate matter (PM) deposit recognized by the engine electronic control unit coincide with the actual particulate matter (PM) deposit accumulated in diesel particulate filter after replacing or cleaning diesel particulate filter.
• The initialization of the DPF-related information should be performed using a Multi-Use Tester as follows:

9.1 Preparation
• This operation should be performed under the following conditions.
• Starter switch: ON (but do not start engine)
• Vehicle stationary
• Diagnosis switch: ON (fuse connected)
• T/M: Place the gearshift lever in the neutral position.

9.2 Initialization of the DPF-related information
(1) System selection
• Select “Engine/Transmission” from the system selection menu.
Then select “Engine control” from the menu. After a short while, the menu for the engine control will be displayed.
• Select the “ECU Reset”.

(2) ECU reset function selection
Screen for selecting [ECU Reset] functions
• Select the “History reset”.

(3) History reset
Screen for selecting [History Reset] functions
• Select No. 01 “DPF-related information”.
• Click “Reset” button.
If “No memory” is displayed in the “Status”, this work sequence is ended because of absence of any history necessary to be reset.

[History reset confirmation] screen
• Click “OK” button.

[History resetting] screen
• During resetting, do nothing and wait for a while.

[History reset completed] screen
• The screen shown at left will be displayed when the resetting is completed. Press “OK” button, and the [History reset] screen is restored.

• Following screen will appear if abnormality occurred during resetting.

[History reset condition error] screen
• This screen will appear when a execution failure signal is sent from the engine electronic control unit to the Multi-Use Tester during resetting.
• In this case, check if the conditions for the execution of the procedure are satisfied and retry from the beginning.
• Click “OK” to return to the [History reset] screen.

[History reset failed] screen
• This screen will appear when the communication error between Multi-Use Tester and the engine electronic control unit or the resetting error occurs.
• In this case, check if the Multi-Use Tester and the vehicle (engine electronic control unit) is connected correctly and if the conditions for the execution of this procedure are satisfied. Retry
from the beginning.
• Click “OK” to return to the [History reset] screen.

[ECU reset condition error] screen
• This screen will appear when a execution failure signal is sent from the engine electronic control unit to the Multi-Use Tester during resetting.
• In this case, check if the conditions for the execution of the procedure are satisfied and retry from the beginning.
• Click “OK” to return to the [History reset] screen.

Error while operating the Multi-Use Tester [Communication error] screen
• The screen shown at left will be displayed when the communication between the engine electronic control unit and Multi-Use Tester is disabled during some operation being executed.
• In this case, check if the conditions for the execution of the procedure are satisfied and retry from the beginning.
• Click “OK” button.

 

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