ECU information available
Actuator test: no OK
Measure parameters: yes
Characterised by
- Open circuit
- Coherence
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 | ignition on: - engine ECU, connected: - check: presence of 12 V at terminal(s) 33 on connector (88 V.NR) |
Coherence
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running presence of voltage on terminal 33 of engine control unit less than 10 V engine running presence of voltage on terminal 33 of engine control unit greater than 16 V | engine running: - stabilise the engine speed at 2000 rpm, measure the battery voltage with the equipment switched on which uses a large amount of current engine running, engine ECU, connected: - check: presence of voltage U between 12 and 14,5 V on terminal 33 of the ECU ignition off, engine ECU, disconnected: - check continuity of wires A and M earth point MM |
A all models
