40
RER Modification at High Altitude
General
At high altitude, the RER system needs a different engine timing
curve to work properly.
Operation
Non-DPM
TM
Liquid-Cooled Models
Before using the reverse system, first select the altitude mode that
changes engine timing curve.
To do so, push and hold START/RER button with engine running. After
2 seconds, one beep is heard meaning that the low altitude mode
can be selected. Releasing START/RER button just after hearing that
one beep will select the low altitude mode. The reverse system is
now ready to operate in low altitude regions. Shifting in reverse is
achieved as described above in Shifting in Reverse.
To select high altitude mode, push and hold START/RER button until
2 beeps are heard. Release button within one second. The reverse
system is now ready to operate in high altitude regions. Shifting in
reverse is achieved as described above in Shifting in Reverse.
As long as the START/RER button is pushed and held the RER system
switches from one mode to the other. One beep then 2 beeps then
one beep then 2 beeps and so on are heard with one second interval.
The mode to be selected corresponds to the last beep code heard.
The selected altitude mode is kept in memory until a new one is
chosen — whether the engine is stopped or not.
DPM Liquid-Cooled Models
These vehicles are equipped with a Digital Performance Management
(DPM) system. This system takes care of the altitude mode required
by the RER.
No START/RER button operation is needed to select a mode. Just
follow Shifting in Reverse above.
Mmo2003-003a.book Page 40 Tuesday, March 19, 2002 2:22 PM
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