PIAGGIO PORTER 1.3 16V 2008, Service Manual

Page: 517 / 892

P1520 - Malfunzionamento circuito segnale interruttore
Using the diagnostic tester DS-21
1. Checking the input signal through the C/A switch of the idle switch to the Electronic Control
Unit
•
Set the ignition switch to OFF. Connect the diagnostic tester DS-21 to the Data Link Con-
nector through the special tool.
Specific tooling
020618Y Cable harness for connecting the OBD Connector and the Diagnostic Tester
•
Set the ignition switch and the tester main switch to ON. Check the idle switch signals (To
perform this operation, refer to the user manual of the diagnostic tester DS-21.
If failures are detected during checks, inspect the
malfunction that is detected intermittently or due to
false contact.
2. Check the cable harnesses between the
throttle valve sensor and the Electronic Con-
trol Unit
Model EURO 3
•
Set the tester main switch and the ig-
nition switch to OFF.
•
Set the special tool (sub-wiring har-
ness). Do not connect the connector of
the special tool to the Electronic Con-
trol Unit.
•
Check there are no interrupted or
short-circuited wires in the cable har-
ness and connector.
- Throttle valve sensor
Connector XT1 on the sensor side - connector on
the 17 E2 electronic control unit side.
Connector XT0 on the sensor side - connector on
the 44 VTH electronic control unit side.
PORTER 1.3 16V
Iniection System
IS - 517