Motronic M 1.5.4 F2:TROUBLE CODE TABLE
| Trouble Code | Information Sensor Cause of Fault | Data List No. | Trouble Code Storage when |
|---|---|---|---|
| 31 | NO ENGINE RPM | ||
| SIGNAL | 27, 28 | · Ignition ON |
· Engine speed less than 23 rpm
· Following trouble codes not recognised: 19
· Since ignition ON, there has not yet been a start with correct synchronisation
Replacement value:
· No replacement value
Effect:
· Current values are used for the mixture adaption and demand adaption. Calculated values are used for idle control adaption and characteristic curve adaption.
Note:
| Trouble code 31 is always displayed when the ignition is switched on. As soon as an engine speed signal is received from the pulse pickup sensor on starting, the fault is deleted and does not remain stored if the system is intact. |