PIAGGIO NRG POWER PUREJET, Руководство по ремонту, Страница: 145 / 248

The throttle position sensor and related circuit can be checked by using the scooter tester.
Specific tooling
020460Y Scooter diagnosis and tester
For the check, proceed as follows.
Connect the diagnostic tester to the vehicle. Select the «parameters» function. The following values
are reported:
THROTTLE OPEN. %
The displayed value refers to the valve opening percentage. Check that a progressive actuation of the
valve corresponds to an equal increase of the opening percentage value. A 0% percentage denotes
the minimum position (approx. 20% opening)
TPS1 OUTPUT = V
TPS2 OUTPUT = V
The displayed tensions refers to the TPS1 and TPS2 signals. Progressively open the valve and check
the following conditions:
TPS1 - Increases progressively
TPS2 - Decreases progressively
Set the valve opening to 50% and check that at this value the signals TPS1 and TPS2 are equal or very
close (a few hundreds volts difference).
N.B.
FOR A MORE PRECISE CHECK, PROGRESSIVELY OPEN THE VALVE DIRECTLY BY THE
THROTTLE BODY. USING A FLEXIBLE TRANSMISSION CAUSES AN IRREGULAR OPENING
TPS1 ZERO = V
TPS2 ZERO = V
TPS TO REST = (NO - YES)
The TPS signal reset function is used when signals TPS are efficient.
Select the errors function.
Check the following errors and relevant ISO codes:
ERROR AND ISO
CODE
WARNING O RIGIN ENGINE BEHAV-
IOUR
INJECTION
LIGHT
P1123
TPS
Both TPS signals missing. Acknowl-
edgement occurs when voltages are
close to:
0V = short circuit
5V = open circuit
In the event of intermittent fault, the sys-
tem switches to the "occurred" status.
To reset the function, switch ON - OFF
Forced idle Flashing
NRG Power Purejet
pure jet injection
INJ PJ - 29