PIAGGIO PORTER 1.3 16V 2008, Service Manual

Page: 469 / 892

If other diagnostic failure codes are detected be-
sides P0130 , proceed with the relevant diagnostic
failure code diagram, otherwise jump to step 2 .
2.Checking the cable harness between the
oxygen sensor and the electronic control unit.
•
With the ignition switch set to OFF, set
the special tool (sub-wiring harness).
Disconnect the special tool connectors
on the electronic control unit side.
•
Disconnect the oxygen sensor connec-
tor.
•
Check the cable harness and the con-
nector for interrupted or short-circuited
wires. Check if there are interrupted or
short-circuited wires between the con-
nector X28 of the oxygen sensor on the
cable harness side and the terminal 75
of the special tool, repair or replace the
cable harness or the connector, if nec-
essary.
3. Checking the oxygen sensor output voltage while running at idle.
•
Connect the oxygen sensor and connectors of the special tool, respectively.
•
Connect the diagnostic tester DS-21 to the Data Link Connector by means of the special
tool.
Specific tooling
020618Y Cable harness for connecting the OBD Connector and the Diagnostic Tester
•
Let the engine run at 2500 rpm for
about 90 seconds.
•
Set the tester main switch to ON to
read the oxygen sensor output voltage
while running at idle.
If voltage varies repeatedly between a voltage be-
low 0.3V and above 0.6V, jump to step 10 .
PORTER 1.3 16V
Iniection System
IS - 469