Launch X431 PAD V Elite with SmartLink C and the extra HD Truck Software Authorization Pack can perform Cylinder Cutoff test for DFAC heavy-duty trucks. It works like a charm, the same as X431 PAD 5 LINK HD.
Detailed operation guide:
Select “Local Diagnosis” function on the main menu of X431 PAD V
Select “DFAC”
Make sure the DFAC software is V11.35 (DongFeng light truck V11.35)
Click on “OK”
It will connect the VCI in WiFi mode automatically
If the firmware is required to be updated, it will pop up a firmware update window, and take several minutes to update automatically. Ensure the VCI is powered up!
After the firmware is updated successfully, select the corresponding model to operate.
For example:
Select “Engine”
Select “Dongfeng Light Eng”
Select “ZD30 D-sample (China VI)”
Select “Read Dtcs”, and it shows the related diagnostic trouble codes.
Select “Special Function”
Select “Cylinder Cutoff Test”
Check the test conditions:
1. Engine speed below 1600rpm
2. Max allowable test time is 30s
3. Engine idles and in neutral gear
4. Handbrake pulled up
5. Electric equipment such as A/C is off.
Click “OK” to continue
Click on the number of cylinders to be disconnected
i.e. Cut Off Cylinder 1
View the changes in value (here it turns from 600 to 595.50)
Click on “Restore Cutoff Cylinder”
Then the value will be restored to the previous one
Done!
Video guide: