PIAGGIO 2005 XEVO 400ie, Workshop Manual

Page: 213 / 376

Specification Desc./Quantity
- Dirty by-pass circuit
- Faulty Stepper motor
5 Other - Wrong distribution timing
- Wrong idle speed carburetion
- Wrong reset of the throttle valve position sensor
2 - Failures to the EMS system may depend on loosened connectors. Make sure that all connections
are properly implemented.
Check the connectors being careful of the following: check that terminals are not bent and that con-
nectors have been connected up properly.
Check whether the failure changes if the connector is slightly vibrating.
3 - Before replacing the EMS control unit, check the whole system carefully.
If the fault is fixed by replacing the EMS control unit, install the original control unit again and check
whether the fault occurs again.
4 - For troubleshooting, use a multimeter with an internal resistance of more than 10K
Ω
/V.
Improper instruments may damage the EMS control unit.
The instruments to be preferred have a definition of more than 0.1V and 0.5
Ω
and an accuracy of more
than ± 2%.
Immobiliser circuit
The EMS system is integrated with the immobiliser
anti-theft device.
Its functions are:
- Start-up enabled by key recognition.
- Deterrent flashing.
System components
The system consists of:
-EMS system control unit
- Decoder
- Aerial
- master key (brown)
- service key (black)
- Deterrent and diagnosis LED
XEVO 400ie
Injection
INJEC - 213