Injector - Malaguti Dune X 125 Service Station Manual

Electrical system

Verify continuity of the wiring harness between the sensor connector and the control unit
connector: control unit PIN 31 - sensor PIN B. If necessary, restore the wiring harness.

Verify continuity of the wiring harness between the sensor connector and the injection relay:
sensor PIN A - injection relay PIN 3. If necessary, restore the wiring harness.

If the wiring harness is intact and the error persists, proceed with the following checks.
Short circuit to negative:

Disconnect the sensor connector.

Check the sensor connector PIN B ground insulation. If there is no insulation, restore the
wiring harness.

If PIN B is insulated from ground and in the absence of other errors (fuel pump, injector,
coil), this means that the control unit is most likely faulty.

Injector

Function
Provide the correct amount of fuel at the correct time.
Operation / Operating principle
Injector coil is excited for the petrol passage to open.
Level in electrical circuit diagram
Relay for injection utilities, Coils and injectors
Electrical specifications

14.8 Ώ +/- 5% (at 20 °C - 68°F)
Pin-out:
1. Control unit ground
2. Power via relay
Diagnostic tool - Activation

Injector control
Diagnostic tool - Electrical errors
Injector P0201 - short circuit to positive / short cir-
cuit to negative / open circuit.
Error cause
Short-circuit to positive: excessive voltage to PIN
34 of the control unit connector.
Short circuit to negative: zero voltage to the PIN 2
of the injector connector.
Open circuit: circuit interruption.
Troubleshooting
ELE SYS - 92
Dune 125 - Dune X 125 - Euro 4