CBR-1008 202404

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Preview Solution CBR-1008-3
Mack Chassis - Equipped With An
Automated Manual Transmission
Model D or F ( AMT-D, AMT-F, mDrive )
Missing X1 Value In VDA And Default
Settings Guidelines, Parameter
P1AOB; Fault Code P1052-54, Error 40,
Or Error 18 Encountered During Clutch
Or Tran
Published 22 April 2024
Valid for GU,GR,CXU,CHU,PI,AN,MRE,TE,TD model year 2014 to present
After replacing the clutch, you might encounter this issue if there's a problem with either the
clutch hardware or how the clutch was installed. It can also happen if the wrong clutch
calibration option is selected in Tech Tool.
If the clutch hasn't been replaced and its wear limit (X2 value) is lower than the minimum
allowed value of X1, the calibration can't use that value. Essentially, you can't calibrate a
clutch using an old clutch. Another possibility is that the X1 value is missing in VDA. If X1 is
already in VDA, then the problem likely lies with the truck itself rather than the central
systems. Just manually changing a value in VDA won't solve the issue.
If additional help is required an eService case will need to be started.
• The eService case MUST include:
- This Solution Number
- A description of the original customer complaint.
- A thorough description of all work performed up to the point of the case's creation.
- A DTC Readout if codes are present, active OR inactive.
- Any screenshots or photos that are relevant to this situation.
; Live UI
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