Motronic M 1.5.4 F2:TROUBLE CODE TABLE
| Trouble Code | Information Sensor Cause of Fault | Data List No. | Trouble Code Storage when |
|---|---|---|---|
| 18 | KNOCK CONTROL MODULE; REPLACE ECU | 08 | · Coolant temperature less than 0.3 °C (31.5 °F) |
or
· Load signal less than 3.3 ms (Value varies depending on the engine speed)
· Engine speed greater than 600 rpm and less than 5000 rpm
· In order to recognise the fault, the control unit uses an internal evaluation logic of the knock sensor voltage, which is measured for a certain period of time.
Replacement value:
| · Engine load signal is greater than 3.3 ms and coolant temperature is greater than -0.3 °C (31.5 °F): The control unit retards the spark angle up to 10.5 °CA for safety reasons. (Value varies depending on the engine speed) |