PIAGGIO PORTER 1.3 16V 2008, Service Manual

Page: 511 / 892

•
With the ignition switch set to ON, measure voltage between the body ground and each one
of the cable harness side connectors N05, N53, N54 and N83 of all the ignition coils.
Characteristic
Specified value
battery voltage
If failures are detected during checks proceed with
step 5 .
KEY:
1 . Ignition coil wire on the cable harness side
4. Checking the ignition coil power supply volt-
age
Check there are no interrupted or short-circuited
wires in the cable harness, connector and fuse re-
ferring to the checking of wires and connectors.
•
Set the ignition switch to OFF.
•
Disconnect the connectors of the igni-
tion switch and ignition unit on the Elec-
tronic Control Unit side.
- Between the ignition switch and the ignition unit
terminal B1 .
- Between the ignition switch and each connector
NO5 N53 N54 and N83 of all the ignition coils.
Repair and replace the cable harness or the con-
nector, if necessary, or replace the fuse, otherwise
replace the ignition switch.
KEY:
1 . Ignition coil wire on the cable harness side
2 . Ignition switch wire on the cable harness side
5. Checking the ignition signal and the ionic signal
Check that ignition and ionic signals are generated by the Electronic Control Unit and input with an
oscilloscope.
PORTER 1.3 16V
Iniection System
IS - 511