System Description - DAF LF45 Series Service Manual

3
ALLISON MD 3060 AUTOMATIC GEARBOX
ΛΦ45/55 series
General

1.2 SYSTEM DESCRIPTION

"Gearbox" warning symbol
When the vehicle ignition is switched on, the
"gearbox" warning symbol will not appear on the
DIP display.
If the gearbox symbol in the main display lights
up, there is a fault in the gearbox (changing gear)
or the temperature of the gearbox oil is too high.
The "gearbox" warning symbol in the DIP will then
be displayed in yellow. The selector keypad LED
will also flash three times. The accompanying
fault code can be read on the selector display.
The ECU will block the functions of the selector
and the gearbox will select a "safe gear" for the
gearbox. It is important to drive the vehicle to a
safe place as soon as possible and switch the
ignition off. It will no longer be possible to shift the
gearbox to neutral. The ECU will prevent this.
After approximately 30 seconds start the engine
again and shift the gearbox. If the fault is one
whereby the gearbox must in no circumstances
be shifted, the ECU will no longer shift the
gearbox.
The warning symbol in the display of the DIP will
then appear in red. The "STOP" warning indicator
will also light up.
Driving is therefore no longer possible!
8
If the fault is one whereby the gearbox may still be
shifted, the warning in the main display will
disappear. The ECU will have recorded the fault
as an inactive fault.
It is now possible to drive the vehicle again,
though the fault will still need to be remedied. In
this situation, however, it is no longer possible to
shift gears.
©
1-2 200508
DAF LF Gearboxes and Clutch Service Manual