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Automated Manual Transmission
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NOTE:
Repeat the test several times to be safe.
Brake Pedal Switch Check:
1.
Bring the ignition key to Ignition.
2.
Connect the diagnostic tool equipment
and select “State Inputs (ON/OFF)” for the
brake pedal switch.
3.
Press the brake pedal and check that the
value displayed changes (for released to
pressed or vice versa).
4.
If the change of state does not occur
check the brake pedal switch, its fixing,
position and wiring.
Clutch Drag Check*:
To be carried out after 2 minutes after the
engine starting. During these 2 minutes the
TCU performs the auto calibration of the kiss
point.
1.
Connect diagnostic tool equipment.
2.
Start the car and put the gearbox in neu-
tral.
3.
With the engine idling, read the value of
the clutch plate speed parameter
4.
If the clutch plate speed is higher than ze-
ro, the clutch dragging condition is
present.
5.
In active diagnosis perform the calibration
of the clutch parameters by means of "en-
abling clutch auto calibration".
6.
Repeat the points from 2 to 4. If the prob-
lem does not occur: go to point 7.
7.
In the absence of clutch drag bring the en-
gine to temperature and heat the clutch
by setting off several times (with accelera-
tor pedal pressed beyond half of its
travel).
8.
Repeat steps 1 to 4.
9.
If as referred to in step 4 it is found to be
in the clutch drag condition it is therefore
necessary to the replace the clutch mech-
anism; if not there is no clutch drag.
NOTE:
The phenomenon of clutch drag is very often
found in warm engines.
What to do in the event of an error in the
TCU
Errors on the CAN network:
Check: the follows:
That the network detects all the control
units (any control unit connected tothe
CAN could cause network operating prob-
lems). If one of the control units is not
communicating, restore/replace the con-
trol unit involved.
The state of the connections and continuity
of the wiring regarding the CAN line. It is
advisable not to stop at a visual analysis of
the connection, but test with under me-
chanical stress (pull the wires, twist, check
the looseness of pins); if there is a fault, re-
store/replace the wiring.
NOTE:
The control unit replacement is the last ac-
tion to be carried out. For the wiring,
measure (after POWER LATCH) the equiva-
lent resistance, which must be 60 ohm in key
Off conditions.
Solenoid valve for 1st/2nd position selec-
tion:
Carry out the solenoid valve active diagno-
sis. If the result of the test is not positive,
move on to the next step.
Check the state of the connections and the
continuity of the wiring. If a fault is found
restore/replace the wiring.
Carry out the solenoid valve active diagno-
sis again. If the test fails, replace the