Function
Commands engine starting through the injection control unit.
Operation / Operating principle
The starter button, the brake switches, the starter command relay and the injection control unit between
PIN 5 and 10 are involved.
ELECTRICAL ERRORS
Starter command P0170
- shorted to positive.
Error cause
Shorted to positive: excessive voltage at PIN 10 of the control unit connector.
Troubleshooting
Shorted to positive:
- This malfunction is detected with a brake activated and the starter button pressed (voltage of 12V read
at PIN 5)
- If the battery voltage does not drop (thanks to the absorption of the starter command relay excitation
coil) the control unit understands that PIN 10 is shorted to battery.
- Restore the cabling (if the short is in the cabling) or the relay (if the short is in the relay).
ENGINE TEMPERATURE SENSOR
Function
Serves the purpose of communicating the engine
temperature to the control unit in order to optimise
performance.
Operation / Operating principle
NTC type sensor (resistance sensor, inversely
variable with temperature).
Pinout:
1. Injection ECU
2. Ground from control unit
Engine temperature sensor P0115
- open circuit or shorted to positive / shorted to negative.
Error cause
Open circuit or shorted to positive: interruption of the circuit or excessive voltage at PIN 13 of the control
unit connector. Shorted to negative: null voltage between PIN 13 and 15 of the control unit connector.
Troubleshooting
Open circuit:
- Disconnect the connector of the control unit.
- Measure the resistance value of the sensor at different temperatures between PIN 13 and 15.
- Disconnect the sensor connector.
Vespa LX - S 125 3V ie 150 3V ie (2012)
Electrical system
ELE SYS - 103
Содержание S 2012
Страница 1: ...SERVICE STATION MANUAL 677662 EN Vespa LX S 125 3V ie 150 3V ie 2012 ...
Страница 4: ......
Страница 6: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Страница 27: ...INDEX OF TOPICS TOOLING TOOL ...
Страница 37: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Страница 48: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Страница 52: ...Troubleshooting Vespa LX S 125 3V ie 150 3V ie 2012 TROUBL 52 ...
Страница 53: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Страница 54: ... LX VERSION S VERSION Electrical system Vespa LX S 125 3V ie 150 3V ie 2012 ELE SYS 54 ...
Страница 69: ... S VERSION Vespa LX S 125 3V ie 150 3V ie 2012 Electrical system ELE SYS 69 ...
Страница 72: ... S VERSION Electrical system Vespa LX S 125 3V ie 150 3V ie 2012 ELE SYS 72 ...
Страница 75: ... S VERSION Vespa LX S 125 3V ie 150 3V ie 2012 Electrical system ELE SYS 75 ...
Страница 109: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Страница 114: ...INDEX OF TOPICS ENGINE ENG ...
Страница 143: ... Unscrew the four screws and remove the tappet cover Vespa LX S 125 3V ie 150 3V ie 2012 Engine ENG 143 ...
Страница 174: ...INDEX OF TOPICS INJECTION INJEC ...
Страница 181: ...THE FOLLOWING INDICACTIONS REFER TO THE S VERSION Vespa LX S 125 3V ie 150 3V ie 2012 Injection INJEC 181 ...
Страница 206: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Страница 226: ...Suspensions Vespa LX S 125 3V ie 150 3V ie 2012 SUSP 226 ...
Страница 227: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Страница 236: ...INDEX OF TOPICS CHASSIS CHAS ...
Страница 246: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Страница 251: ...Tyres 11 V Vehicle 8 110 ...