ECU information available
Actuator test: yes
Measure parameters: yes
Characterised by
- Open circuit
- Short circuit to earth
- Short circuit to positive
Checks to be carried out if fault is present
Open circuit
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running, open circuit (on terminal 17 of the ECU) | verify: ECU connected, ignition on: - presence of 12 V at terminal 17 on control unit (on connecting each injector separately, one after the other) disconnect the injectors: - 14 Ω ≤ R ≤ 18 Ω at the terminals of each injector |
Short circuit to earth
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running short circuit to earth (on terminal 17 of the ECU) | verify: ECU connected, ignition on: - presence of 12 V at terminal 17 on control unit |
Short circuit to positive
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running short circuit to positive (on terminal 17 of the ECU) | verify: control unit disconnected, ignition on: - presence of 0 V at terminal 17 on control unit disconnect the injectors: - 14 Ω ≤ R ≤ 18 Ω at the terminals of each injector |
Check(s) to be carried out if no fault found
Injector(s) disconnected, ignition on, verify: 12 V present at terminals 1 and 2 of connector 2 V.NR (for each injector)
Disconnect the injectors, verify: 14 Ω ≤ R ≤ 18 Ω at the terminals of each injector
Consistency of the signal detected by the ECU (measure parameters)
