Bosch Me 9.0 Engine Management System - Volvo B5254T3 Manual

M E 9.0

Bosch ME 9.0 Engine Management System

The engine now has a newly developed ME 9.0 engine management system from Bosch.
Bosch engine management system ME 7.01 had to be updated to the ME 9.0 for the S40/V50.
The control module has been moved from the control unit box to the intake manifold. This is mainly due
to increased requirements for the control module's environment (temperature, vibration, water tightness
etc.).
At the same time the processor has been replaced with a more powerful version with more memory.
The processor load for the ME 9.0 is approximately 80-85%, this figure would have been higher in the
ME 7.01 and left too small a margin.
- The ME 9.0 also has 1.5 MB of flash memory (2MB available).
The ME 7.01 only has 1 MB of memory.
-
The ME 9.0 has a higher maximum temperature specification (105°C vs. 85°C).
-
The ME 9.0 has more robust vibration specifications than the ME 7.0.1 due to its changed
location.