35
. Immobilizer Aerial
Troubleshooting procedure
Engine does not start
ENGINE DOES NOT START IF ONLY PULLED
Possible Cause
Operation
Immobiliser enabling signal
System not encoded
System not efficient, repair according to the indications of the
self-diagnosis
Presence of faults detected by the self diagnosis
Pump relay
HV coil
Injector
Revolution timing sensor
Fuel system
Fuel in the tank
Fuel pump activation
Fuel pressure (low)
Injector capacity (low)
Power to the spark plug
Shielded spark plug cap HV coil (secondary insulation)
Parameter reliability
Engine temperature
Distribution timing - injection ignition
Intake air temperature
End of compression pressure
End of compression pressure
Starting difficulties
ENGINE STARTER PROBLEMS
Possible Cause
Operation
Presence of faults detected by the self diagnosis
Pump relay
HV coil
Injector
Revolution timing sensor
Air temperature
Engine temperature
Start-up speed
Starter motor and solenoid
Battery
Ground connections
End of compression pressure
End of compression pressure
Power to the spark plug
Spark plug
Shielded cap
HV coil
Speed-timing sensor
Ignition advance
Fuel system
Fuel pressure (low)
Injector capacity (low)
Injector sealing (poor)
Correctness of the parameters
Engine temperature
Stepper throttle valve position intake air temperature (steps
and actual opening)
Cleaning the throttle valve, air filter efficiency
Engine stops at idle
ENGINE DOES NOT IDLE/ IDLING IS UNSTABLE/ IDLING TOO LOW
Possible Cause
Operation
Presence of faults detected by the self diagnosis
Pump relay
Vespa LX - S 125 3V ie 150 3V ie (2012)
Injection
INJEC - 183
Summary of Contents for S 2012
Page 1: ...SERVICE STATION MANUAL 677662 EN Vespa LX S 125 3V ie 150 3V ie 2012 ...
Page 4: ......
Page 6: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Page 27: ...INDEX OF TOPICS TOOLING TOOL ...
Page 37: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Page 48: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Page 52: ...Troubleshooting Vespa LX S 125 3V ie 150 3V ie 2012 TROUBL 52 ...
Page 53: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Page 54: ... LX VERSION S VERSION Electrical system Vespa LX S 125 3V ie 150 3V ie 2012 ELE SYS 54 ...
Page 69: ... S VERSION Vespa LX S 125 3V ie 150 3V ie 2012 Electrical system ELE SYS 69 ...
Page 72: ... S VERSION Electrical system Vespa LX S 125 3V ie 150 3V ie 2012 ELE SYS 72 ...
Page 75: ... S VERSION Vespa LX S 125 3V ie 150 3V ie 2012 Electrical system ELE SYS 75 ...
Page 109: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Page 114: ...INDEX OF TOPICS ENGINE ENG ...
Page 174: ...INDEX OF TOPICS INJECTION INJEC ...
Page 206: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Page 226: ...Suspensions Vespa LX S 125 3V ie 150 3V ie 2012 SUSP 226 ...
Page 227: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Page 236: ...INDEX OF TOPICS CHASSIS CHAS ...
Page 246: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Page 251: ...Tyres 11 V Vehicle 8 110 ...