Detroit Diesel DDEC VI Application And Installation page 365

DDEC VI ELECTRONIC CONTROLS APPLICATION AND INSTALLATION
5.26.3 EATON TOP2 OPERATION
The Top2 system automatically shifts between the top two gears of the Eaton Top2 Transmission
to optimize drivetrain for best fuel economy or performance. Shifting between the two highest
gears in the transmission is done by the CPC and requires no driver interaction. The system
works with engine brakes and cruise control during automatic shifts. The torque demand from
throttle or cruise control is smoothly ramped down before the shift and ramped up after the shift
allowing the driver to maintain throttle position during shifts. Cruise Control is automatically
resumed after the shift. When the transmission is shifted out of the two top gears, the driver has
full manual control over the transmission. The engine will also detect skip shifts into the auto
mode and still take control of the transmission's top two gears.
DDEC VI supports the Top2 RTLO-xx713A-T2 transmission.
NOTE:
This transmission is only available with a Series 60 engine.
Installation
See Figure 5-40 to install Top2.
Figure 5-40 Top2 Transmission
Programming Requirements and Flexibility
The Top2 feature is enabled when the Top2 Shift Solenoid and the Top2 Lockout Solenoid
digital outputs, listed in Table , 5-83 are configured as well as the transmission type. The digital
outputs must be configured by the Vehicle Electronic Programming System (VEPS) or the DDEC
Reprogramming System (DRS).
5-153
All information subject to change without notice. (Rev. 01/07)
7SA827 0701 Copyright © 2007 DETROIT DIESEL CORPORATION