Malfunctions on the direct shift transmission

Service Info
Malfunctions on the direct shift transmission
7-speed transmission with dry double clutch
Manufacturer:VW
Models:
Scirocco (137)
Passat CC (357)
Golf Plus (5M1/521)
Golf/Jetta (1K/5K1)
Touran (1T)
Transmission:0AM
In the direct shift transmission, the gear is changed
by the mechatronics. The mechatronics consist of
a control unit and an electrohydraulic control unit.
The integrated hydraulic pump is electrically driven
and provides an operating pressure of 70 bar. As a
result of the increased power required by the hydraulic pump, a fuse must be used that is designed
for a high continuous load.
A 30 A fuse is installed ex works for the power supply to the mechatronics. In individual cases, it is
possible that an incorrectly dimensioned 15 A fuse
may have been installed, which could cause a range of malfunctions on the direct shift transmission.
The following error memory entries may have been
stored in the transmission control unit:
•
Issued 06.2013 LuK 0041 Technical content subject to change
Listed OE-numbers are for comparison purposes only.
© 2013 Schaeffler Automotive Aftermarket
•
•
•
•
P0562/21148
Supply voltage for the electric motor is too low
P177F/21065
Unacceptably high voltage drop in the electric
motor
P175F/21098
No valid basic calibration for the transmission
P189C/21247
Accumulator diagnosis not possible
P174A/21108
Valve open load coupling
Phone: +44 (0) 14 32 264 264*
Fax: +44 (0) 14 32 375 760
[email protected]
www.schaeffler-aftermarket.com
* Calls from within the UK 08457 001100
Image 1: The fuse for the mechatronics is usually located in the engine compartment fuse holder
In the event of malfunctions on the direct shift transmission, first
check whether a functioning 30 A fuse has been installed for the power supply to the mechatronics. The precise installation location of the
fuse depends on the vehicle and can only be located using the current
flow diagram or the on-board literature. Faulty or incorrectly dimensioned fuses must be replaced.
A 30 A fuse is essential for the direct shift transmission to operate
without any malfunctions.
Observe the specifications of the vehicle manufacturer!
Spare parts and technical information can be found under
www.schaeffler-aftermarket.com or www.RepXpert.com.