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HEADLIGHT RELAY
Function
Controls the lights logic, the engine control unit
modifies at idle speed the intensity of the headlight
for maintaining battery.
Pin-out:
30. Battery positive
85. Live positive lead
86. Controlled by engine control unit
87. Headlight output
87A. Ground lead
ELECTRICAL ERRORS
Low headlamp voltage P1002
- shorted to negative.
Error cause
Short circuit to negative: null voltage at PIN 11 of the control unit connector.
Troubleshooting
Short circuit to negative:
- Remove the headlight relay from its base and ensure its correct functioning.
- Perform the check procedure of the control unit and relay base connector.
- Check the relay base connector PIN 86 from ground insulation.
- If there is no ground insulation restore the cabling.
High headlamp voltage P1001
- open circuit or short circuit to positive.
Error cause
Open circuit or short circuit to positive: interruption of the circuit or excessive voltage at PIN 11 of the
control unit connector.
Troubleshooting
Open circuit:
- Disconnect the connector of the control unit.
- Remove the headlight relay from its base and ensure its correct functioning.
- Perform the check procedure of the control unit and relay base connector.
- Check continuity of the cable harness between the control unit and relay base Control unit PIN 11 -
relay PIN 86. If necessary, restore the cable harness.
Short circuit to positive:
- With the headlight relay connector connected and the control unit disconnected, verify that the fault
is a short circuit with the battery positive of sensor connector PIN 86 (or control unit PIN 11) and restore
cable harness.
If the above tests provided a positive result, proceed with the following checks:
- Perform the check procedure of the control unit and relay base connector.
Vespa Primavera125 - 150 i.e. 3Valvole (2013)
Electrical system
ELE SYS - 115
Содержание 150
Страница 1: ...SERVICE STATION MANUAL 1Q000118 EN Vespa Primavera125 150 i e 3Valvole 2013 ...
Страница 4: ......
Страница 6: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Страница 27: ...INDEX OF TOPICS TOOLING TOOL ...
Страница 37: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Страница 51: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Страница 55: ...Vespa Primavera125 150 i e 3Valvole 2013 Troubleshooting TROUBL 55 ...
Страница 56: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Страница 117: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Страница 123: ...INDEX OF TOPICS ENGINE ENG ...
Страница 182: ...INDEX OF TOPICS INJECTION INJEC ...
Страница 203: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Страница 222: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Страница 229: ...INDEX OF TOPICS CHASSIS CHAS ...
Страница 244: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Страница 249: ...Transmission 10 53 124 136 Turn indicators 79 Tyres 11 V Vehicle 8 118 119 ...