Resetting The Throttle Position Sensor (Tps) - Ducati SUPERBIKE 848 MY 2008 Manual

Diagnostic instruments
Make sure that the throttle cable freeplay is correctly adjusted.
Reset the TPS to zero as described in the paragraph
Screw in fully both bypass screws (20) and (21) and then screw them out by 3/4 of a turn.
Check:
that the throttle angle value read by the DDS tester with the engine switched off is 2.6° ± 0.1°; if not, repeat the
-
procedure Resetting the throttle position sensor (TPS) ;
- that the engine idling state is recognised, i.e. that the butterfly valve closed parameter on the DDS is ON.
Start the engine and wait for the coolant temperature to reach 75 °C.
When the coolant temperature exceeds 75 °C, start the adjustment operations described below, bearing in mind that
on completion of the adjustment, the coolant temperature must not exceed 90 °C.
Warning
If the engine is shut off, before proceeding with adjustment of the CO level, wait a minute after restarting for the
enrichment phase to finish (Crank time).
Check the CO level of the vertical cylinder:
a if the average CO level of the VERTICAL cylinder is greater than or equal to 0.7%, check the rotation speed;
if the average CO level of the VERTICAL cylinder is less than 0.7% (weak mixture), close the VERTICAL by-pass
(21) by 1/4 of a turn at a time, waiting about 20 seconds for the exhaust gases to reach the analyser, until the CO
level of the VERTICAL cylinder exceeds 0.7%. If after completely closing the bypass screw on the VERTICAL
b cylinder, the VERTICAL CO level is still less than 0.7%, open the bypass screw of the HORIZONTAL cylinder (20)
by 1/4 a turn at a time until the electronic engine management system brings the VERTICAL cylinder to a CO level
greater than 0.7% (note that adjusting the by pass of the horizontal cylinder also adjusts the combustion of the
vertical cylinder).
Checking the average rpm read by the DDS:
a if the average reading is between 1300 and 1400 rpm (1350 ±50 rpm), the adjustment is correct;
if the average reading falls outside the above range, repeat the entire adjustment procedure, after which, if the
average is less than 1300 rpm, open both bypass screws (20) and (21) by 1/8 of a turn at a time, until it falls
b
within the above range. Conversely, if the average is more than 1400 rpm, close both bypass screws (20) and
(21) by 1/8 of a turn at a time, until it falls within the specified range.
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Resetting the throttle position sensor (TPS)

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