PIAGGIO PORTER 1.3 16V 2008, Service Manual

Page: 447 / 892

Specific tooling
Integrated in the 020618Y Lift for diagnosis
Step 3
Checking for interrupted cables in the cable harness or inside the ECU
1. Set the tester switch and the ignition switch to OFF.
2. Connect the special tool for interface sub-wiring harness and refer to the relevant section for use.
Specific tooling
020463Y ECU-EFI interface cable harness to check the injection system electrical values.
3. Disconnect the linking cable from the IAT sensor
connector.
4. Afterwards, connect it between terminals (76)
and (17) of the special tool connector.
5. Set the ignition switch and the tester switch to
ON. Read the air temperature value measured by
the diagnostic tester.
Is the value measured about 130°C?:
If SO (EURO 3): the IAT sensor connection cable
harness is interrupted. Repair or replace the cable
harness.
If NOT (EURO 3): interruption inside ECU. Check
or replace the engine electronic control unit. (see
the relevant section).
If SO (EURO 4) - transfer the 4 interface Sub-wir-
ing harness connectors, from the ECU to the DRA-
CO; - reconnect the DRACO to the ECU through
the original connectors. - jumper PIN 76 and 17
and check the air temperature value Is the tem-
perature value approx. 130°C?
If SO (EURO 4): the IAT sensor connection cable
harness is interrupted. Repair or replace the cable
harness.
If NOT (EURO 4): the DRACO or the cable har-
ness connecting with the ECU is interrupted. Fix
the cable harness or replace the DRACO.
PORTER 1.3 16V
Iniection System
IS - 447