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· Engine
speed higher than 480 rpm
· The
control unit does not recognize a PWM signal after 0.4 s
(short circuit to ground)
Effects:
· Solenoid
valves (brake band, 1 - 2 / 3 - 4 shifting, 2 -
3 shifting, torque converter clutch) and electrohydraulic pressure
regulator are switched off
· If
the fault is recognized, the following gears can still be shifted manually in
each driving stage (emergency program):
"Driving stage"
(gear) "D"(4), "3"(4), "2"(3), "1"(1)
Note:
Vehicles with petrol engines:
At an engine speed lower than
480 rpm, the lead from transmission control unit Ter. 55 is
used to transfer the coolant temperature and at speeds higher than
480 rpm to transfer the engine load signal.
Vehicles with diesel engines:
The lead from transmission
control unit Ter. 55 transfers driver input (load), injection quantity
and engine temperature in timed multiplex.
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