Cruise Control Operation

All functions of the cruise control system are incorporated in the EML IIIs control module. The cruise control main switch is wired directly to the EML IIIs control module. The multi-function steering wheel inputs are direct to the EML through a separate serial data bus.

The EML control module regulates the operation of the cruise control by regulating the position of the throttle valves as it did in the past. The new cruise control logic adopted with the GR II E38 7401 are incorporated in the EML control logic.

The EML controls the cruise control indicator lamp in the instrument cluster. When the main switch is pressed the indicator lamp is illuminated.

The switching "OFF" priorities for cruise operation are carried over from the GR II system The commands for cruise control operation are carried out according to the highest priority as follows:
5 - brake light switch - directly from EML control module
4 - transmission in neutral - from AGS control module over CAN
3 - "OFF" request - from MFL steering wheel
2 - Set/Accelerate - from MFL steering wheel
1 - Resume - from MFL steering wheel

The new logic incorporated into the cruise control include:
- Smoother acceleration under the Resume feature.
- Downshift on decel (down hill) to provide engine braking effect.