ECU information available
Actuator test: no OK
Measure parameters: yes
Oxygen sensor test: yes
Characterised by
- Short circuit to positive
- Open circuit or short circuit to earth
- Coherence
- Not specified
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, after an operating time specified in calibration | engine running: - check presence of U = 0.4 to 0.5 V: between terminals 4 and 22 on the control unit engine running, after an operating time specified in calibration (engine overheating): - check presence of U between 0.1 V and 0.9 V: between terminals 4 and 22 on the control unit ignition off, engine ECU: disconnected, oxygen sensor 1350 disconnected: - check continuity of wires A and B |
Open circuit or short circuit to earth
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running, after an operating time specified in calibration | engine running: - check presence of U = 0.4 to 0.5 V: between terminals 4 and 22 on the control unit engine running, after an operating time specified in calibration (engine overheating): - check presence of U between 0.1 V and 0.9 V: between terminals 4 and 22 on the control unit ignition off, engine ECU: disconnected, oxygen sensor 1350 disconnected: - check continuity of wires A and B |
Coherence
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running, after an operating time specified in calibration | engine running: - check presence of U = 0.4 to 0.5 V: between terminals 4 and 22 on the control unit engine running, after an operating time specified in calibration (engine overheating): - check presence of U between 0.1 V and 0.9 V: between terminals 4 and 22 on the control unit ignition off, engine ECU: disconnected, oxygen sensor 1350 disconnected: - check continuity of wires A and B |
Not specified
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running, after an operating time specified in calibration | engine running: - check presence of U = 0.4 to 0.5 V: between terminals 4 and 22 on the control unit engine running, after an operating time specified in calibration (engine overheating): - check presence of U between 0.1 V and 0.9 V: between terminals 4 and 22 on the control unit ignition off, engine ECU: disconnected, oxygen sensor 1350 disconnected: - check continuity of wires A and B |
Check(s) to be carried out if no fault found
Engine running: check presence of U = 0.4 to 0.5 V: between terminals 4 and 22 on the control unit
Engine running, after an operating time specified in calibration (engine overheating): check presence of U between 0.1 V and 0.9 V: between terminals 4 and 22 on the control unit
Ignition off, engine ECU: disconnected, oxygen sensor 1350 disconnected
- Check continuity of wires A and B
- Check: no earth at terminal(s) 4, 22 on the 55V.NR connector
