ECU information available
Actuators test: yes
Parameter measurements: no
Characterised by
- Short circuit to positive
- Short circuit to earth
- 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 short circuit to positive on terminal(s) 3, of the ECU 1320 | ignition on, ECU 1320 connected; multifunction double relay 1304, connected, check: - no voltage at terminal(s) 3 of connector 1320 |
Short circuit to earth
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running presence of earth at terminal 3 on the 55 V.NR connector, of the ECU 1320 | ignition off, control unit 1320 disconnected; multifunction double relay 1304, disconnected, check: - no earth at terminal 3 on the 55 V.NR connector |
Open circuit
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running open circuit on terminal(s) 3, of the ECU 1320 | ignition off, control unit 1320 disconnected; multifunction double relay 1304, disconnected, check: - continuity of wire(s) between terminal 3 of the 1320 and terminal 10 of the 1304 |
+P: battery +ve