ECU information available
Actuator test: yes
Measure parameters: yes
Characterised by
- Short circuit to positive
- Open circuit or short circuit to earth
- Not specified (short circuit to earth or short circuit to positive or open circuit)
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 | verify: ignition on, ECU connected: - no voltage at terminal(s) 2 of the control unit 1320 (55V.NR) warning: presence of voltage, for 2/3 seconds after the ignition has been switched on ignition on, ECU connected, injector(s) 1/4 disconnected: - 12 V absent on terminal 2 of connector 55V.NR warning: if 12 V is present for 2/3 seconds after switching on the ignition, short circuit with a function supplied by +ve after relay |
Open circuit or short circuit to earth
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running | verify: ignition off, control unit disconnected, injectors 1/4 connected, double relay disconnected: - no earth at terminal 2 on the 55V.NR connector - check continuity of wires A, B, E, F, G - resistance R of the injectors 1/4: 13 Ω ≤ R ≤ 16 Ω |
Not specified (short circuit to earth or short circuit to positive or open circuit)
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running | verify: ignition on, ECU connected: - no voltage at terminal(s) 2 of connector 55V.NR warning: presence of voltage, for 2/3 seconds after the ignition has been switched on ignition on, ECU connected, injector(s) 1/4 disconnected: - 12 V absent on terminal 2 of connector 55V.NR warning: if 12 V is present for 2/3 seconds after switching on the ignition, short circuit with a function supplied by +ve after relay ignition off, control unit disconnected, injectors 1/4 connected, double relay disconnected: - no earth at terminal 2 on the 55V.NR connector - check continuity of wires A, B, E, F, G - resistance R of the injectors 1/4: 13 Ω ≤ R ≤ 16 Ω |
Check(s) to be carried out if no fault found
Check that the injector is not physically sticking (actuator test)
+P: permanent +