PIAGGIO PORTER 1.3 16V 2008, Руководство по обслуживанию

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Throttle status Specified value
Completely open 3.5 - 5.0 V
If the value measured matches the specified value, check or replace the EFI ECU electronic control
unit, otherwise check the cable harness and the connector between the engine electronic control unit
and the throttle valve sensor (VTH line) for interrupted or short-circuited wires (in this case, for the model
EURO 4, possible failures are to be searched for in the cable harnesses downstream and upstream the
DRACO control unit or can derive from an incorrect operation of the DRACO).
5. Checking the power supply voltage on the throttle valve sensor electronic control unit side
•
Set the ignition switch to OFF.
•
Connect the special tool (For the Model EURO 4, connect the special tool between the EFI
ECU control unit and the cable harness connectors coming from the DRACO control unit).
•
With the ignition switch set to ON, measure voltage between connectors 16 and 17 (VTH-
E2).
Characteristic
Voltage specified Value:
4.5 - 5.5 V
If the value measured does not match the specified
value, check or replace the EFI ECU electronic
control unit, otherwise check the cable harness
and the connector between the engine electronic
control unit and the throttle valve sensor (VC line)
for interrupted or short-circuited wires (in this case,
for the model EURO 4, possible failures are to be
searched for in the cable harnesses downstream
and upstream the DRACO control unit or can de-
rive from an incorrect operation of the DRACO).
If no voltage is detected, check the electronic con-
trol unit power supply circuit.
Without using the diagnostic tester DS-21 or
OBD II general scanning device
1. Checking the input signal of the VTH elec-
tronic control unit
•
Connect the special tool (For the Model
EURO 4, connect the special tool be-
tween the EFI ECU control unit and the
Iniection System
PORTER 1.3 16V
IS - 464