PIAGGIO PORTER 1.3 16V 2008, Service Manual

Page: 526 / 892

•
With the ignition switch set to ON, measure voltage between the cable harness side con-
nector XÀF of the valve and the body ground.
Characteristic
specified value:
battery voltage.
If it does not match the specified value, check the
cable harness and the connector between the vac-
uum switching valve for EGR and the main relay,
and that there are no interrupted or short-circuited
wires in battery. Repair or replace, if necessary.
4. Check the cable harness between the elec-
tronic control unit and the vacuum switching
valve for EGR
•
With the ignition switch set to OFF,
connect the special tool (sub-wiring
harness). Do not connect the connec-
tor of the special tool to the electronic
control unit.
•
Check there are no interrupted or
short-circuited wires in the cable har-
ness and connector. Connector XAE
on the valve cable harness side - con-
nector 80 on the VSV1 electronic con-
trol unit side. Repair and replace the
cable harness or the connector, if nec-
essary.
5. Checking the vacuum switching valve for EGR
Replace the vacuum switching valve for EGR, if necessary.
6. Checking the output signal of the electronic control unit
•
Connect the connector to the vacuum switching valve for EGR. Connect the connector of
the special tool to the electronic control unit of the electronic fuel injection. Reconnect the
pipes previously removed in the original position.
•
With the engine cold and the vehicle running, measure voltage between connectors 80 and
82 of the special tool VSV1-E01.
Iniection System
PORTER 1.3 16V
IS - 526