PIAGGIO PORTER 1.3 16V 2008 User Manual

CAUSED BY A BAD CONTACT BETWEEN THE MALE AND
THE FEMALE TERMINAL.
Check the malfunction which is detected intermittently and false contacts
The relay or solenoid valve can be locked. Most of the operation defects which are detected intermit-
tently are due to interrupted wires caused by bad connections or wrong connections inside the circuit.
Check, following the described procedure.
1. Inspect the connector and the terminal. Check according the options related to interrupted wires in
the section "cable harness and connector check".
2. Visual inspection and check of the contact pressure. Check according to options indicated in point
"Visual Inspection and contact pressure check ".
3. inspect the DRACO control unit, checking continuity between the pin of the vehicle device cable
harness side and those of the EFI ECU interface side, or checking for possible internal short circuits.
As an extra check, it is possible to bypass the DRACO connecting the cable harness of vehicle devices
to EFI ECU control unit.
Checking and replacing the electronic control
unit
First of all, check the ground circuit of the elec-
tronic control unit. If an operation defect is detec-
ted, repair the ground circuit. If no defect is
detected, replace the electronic control unit.
1. Disconnect the electronic control unit connector.
Inspect that there is no bending on ground termi-
nals E1 and E2 on the electronic control unit side
and on the cable harness side. Also check the
contact pressure.
2. Measure the resistance between ground termi-
nals E1 and E2 (cable harness side) and the chas-
sis ground. In addition, measure the voltage
between the power supply terminal (cable harness
side) and the chassis ground.
- WHEN THE GROUND CIRCUIT OF THE ELECTRONIC
CONTROL UNIT IS CHECKED, IT CAN BE THE CASE IN
WHICH THE TERMINAL CONTACT CONDITIONS CAN BE
MODIFIED BY DISCONNECTING AND CONNECTING THE
NEW CONNECTOR AND RESULTING IN "NO OPERATION
DEFECTS". IF WHILE CHECKING THE GROUND CIRCUIT
OF THE ELECTRONIC CONTROL UNIT NO MALFUNC-
TIONS ARE DETECTED, CONNECT THE NEW ELECTRON-
IC UNIT CONNECTOR TO CONFIRM THAT THE THERE IS
A MALFUNCTION. NOW, IT CAN BE DETERMINED IF THE
CONTROL UNIT IS DEFECTIVE.
PORTER 1.3 16V Iniection System
IS - 413

PIAGGIO PORTER 1.3 16V 2008 Specifications

General

Brand	PIAGGIO
Model	PORTER 1.3 16V 2008
Category	Automobile
Language	English