ECU information available
Actuators test: yes
Parameter measurements: yes
Characterised by
- Short circuit to positive
- Open circuit or short circuit to earth
Checks to be carried out if fault is present
Short circuit to positive
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running | ignition on, engine management control unit: disconnected, injectors 1, 2, 3, 4 connected: - no voltage at terminal(s) 1 of the control unit ignition off, engine management control unit: disconnected, injector(s) 1, 2, 3, 4 disconnected: - check the insulation of wire A2 in relation to wire B2 - check the insulation of wire A3 in relation to wire B3 - check: resistance R of the injectors: R ≃ 16 Ω |
Open circuit or short circuit to earth
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running | ignition off, engine management control unit: disconnected, injectors 1, 2, 3, 4 connected: - no earth at terminal(s) 1 on the 55V.NR connector ignition on, engine management control unit: connected, injectors 1, 2, 3, 4 connected: - check: presence of 12 V at terminal(s) 1 on connector 55V.NR (for 5 to 7 seconds) - check: resistance R of the injectors: R ≃ 16 Ω |