ECU information available
Actuator test: no OK
Measure parameters: yes
Characterised by: short circuit to positive or short circuit to earth
Checks to be carried out if fault is present
Short circuit to positive or short circuit to earth
| conditions under which the fault appears | checks to be made conditions for checking |
|---|---|
| engine running | verify: engine running: - does the engine speed display on the instrument panel correspond to the engine speed in the parameter measurements? (compare with various engine speeds) ignition on, ECU connected: - 12 V absent on terminal J2 of connector 48 V.MR (computer) 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, disconnect the built-in systems interface: - no earth at terminal J2 on the 48 V.MR connector (computer) |
Check(s) to be carried out if no fault found
Ignition off, control unit disconnected, built-in systems interface disconnected:
- check continuity of wire A
