- Carry out the check procedure of the control unit and relay connectors.
- Verify electrical continuity of the cable between the relay connector (PIN 85) and the control unit
connector (PIN 24).
- Verify electrical continuity of the cable between the relay connector (PIN 30) and the secondary fuse
holders.
- Verify continuity between relay PIN 85 and PIN 86. If there is no continuity replace 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. Ground from control unit
2. Instrument panel
3. Injection ECU
4. Ground lead
Engine temperature sensor P0115
- open circuit or shorted to positive / shorted to negative.
Error cause
Open circuit or short circuit to positive:interruption of the circuit or excessive voltage at PIN 13 of the
control unit connector. Short circuit to negative: null voltage between PIN 13 and 7 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 7.
- Disconnect the sensor connector.
- Check the continuity of the cable harness between the sensor connector and control unit connector:
Control unit PIN 13 - sensor PIN 3 and control unit PIN 7 - sensor PIN 1. If necessary, restore the cable
harness.
- If the cabling is intact but the sensor resistance value is incorrect, this means that the sensor is faulty
and must be replaced, otherwise proceed with the checks.
Short circuit to positive:
- With the sensor connector and the control unit disconnected, verify that the fault is shorted with the
battery positive of sensor connector PIN 3 (or control unit PIN 13) and restore the cabling.
Electrical system
Vespa GTS Super 300 ie (2008)
ELE SYS - 112
Summary of Contents for GTS Super 300 ie 2008
Page 1: ...MANUALE STAZIONE DI SERVIZIO Vespa GTS Super 300 ie 2008 ...
Page 4: ......
Page 6: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Page 32: ...INDEX OF TOPICS TOOLING TOOL ...
Page 44: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Page 56: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Page 60: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Page 115: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Page 123: ...INDEX OF TOPICS ENGINE ENG ...
Page 170: ...Engine Vespa GTS Super 300 ie 2008 ENG 170 ...
Page 178: ...INDEX OF TOPICS INJECTION INJEC ...
Page 179: ...Vespa GTS Super 300 ie 2008 Injection INJEC 179 ...
Page 205: ...Components location Vespa GTS Super 300 ie 2008 Injection INJEC 205 ...
Page 215: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Page 239: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Page 254: ...INDEX OF TOPICS COOLING SYSTEM COOL SYS ...
Page 255: ...Circuit diagram Vespa GTS Super 300 ie 2008 Cooling system COOL SYS 255 ...
Page 256: ...Cooling system Vespa GTS Super 300 ie 2008 COOL SYS 256 ...
Page 260: ...INDEX OF TOPICS CHASSIS CHAS ...
Page 272: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Page 276: ...INDEX OF TOPICS TIME TIME ...