K48661544

Solution K48661544
Tuesday, February 6, 2018 8:36:12 PM CET
Solution
Title (customer effect)
Chassis Equipped With An AMT-F (I-Shift, mDrive) - Idle Drive Function Activates
When Vehicle Is Reversing/Backing Up At Low Speed; Information And Repair - Build
Date Beginning Of Production 2017 To February 2018
Cause
When backing into loading docks or other backing procedures units equipped with an
AMT-F may enter idle driving mode unexpectedly with no indication to the driver.
Contact with a loading dock or similar condition with the transmission in Idle Driving
Mode may cause excessive stress to be placed on the driveline which can result in
damage to equipment.
Solution
Overview
A new feature has been developed for the AMT-F gearboxes that allows the idle drive
function to be turned off in reverse. This feature is available for US17 emissions
(2018MY chassis) that have AMT-F gearboxes. Initial setting for Idle Drive in reverse is
"ON".
Repair
If the chassis falls into the applicable build date range:
1. Update the Transmission Electronic Control Unit ( TECU ) software.
2. Go into Parameter Programming. Locate parameter P1Q9C.
- Set P1Q9C to "OFF".
- Note: P1Q9C will only be present if the TECU has been properly
programmed first.
Solution visibility
Dealer distribution
Function(s)/component(s) affected
Function affected
automatic transmission , engagement , drive axle/transmission
Function Group
Function Group
413 clutch control , 43 gearbox , 47 gearbox and reverse gear (or forward gear)
combined system , 473 gear, forward or reverse , 474 drive shaft, drive shaft gear , 47
5 drive shaft joint
Customer effect
Main customer effect
calibration/programming/pairing/missing operation , efficiency/abnormal behavior , sto
p/start
Conditions
Vehicle operating mode
when driving , in reverse , with a trailer connected , without a trailer connected
Vehicle load
Frequency of occurrence of
problem
half laden , unladen , fully laden
random
Speed
<30 km/h
Engine speed
500 - 1000 rpm
Administration
Author
UT9268H
Dealer ID
UT9268H
Last modified by
RU4469V
Creation date
10-01-2018 22:01
Date of last update
12-01-2018 15:01
Review date
10-01-2019 00:01
Status
Published
NA_Reviewer
ut9268h
NA_Author_Group
GTT
NA_MACK_Vehicle_Range
NA_MACK_Vehicle_Ran
ge
Anthem , CHU , CXU , GU
NA_VOLVO_Vehicle_Range
NA_VOLVO_Vehicle_Ra
nge
VNR , VNL , VNM , VAH
Engine family
Engine family
11L Engine , 13L Engine , MP7 , MP8
Emission Standard
Emission Standard
2018 , OBD2017 , US17 GHG