WORKHORSE CUSTOM CHASSIS
Service Manual
Automatic Transmission – Allison
2007 W Series
© 2006 Workhorse Custom Chassis — All Rights Reserved
SECTION
7.2
PAGE
527
2007 W Series Chassis
WSM082106
without starting the engine. Select DRIVE, the ECS
system will place the transmission in the DRIVE position.
The display should indicate “DN” for CAN equipped
vehicles or “DD” for non-CAN equipped vehicles for
DRIVE position.
NOTE: With the ignition ON, and the engine not running,
the CAN message from the Allison TCM (Transmission
Control Module) to the Arens Controls PBSS (Push
Button Shift Selector) will result in an “N” indication
on the “Monitor” side of the display for any gear (e.g.:
DRIVE, REVERSE, etc.). This is normal. Once the
engine is running the Display for DRIVE will indicate
“D1” through “D6”, depending on the vehicles speed,
or “DD” if CAN is not utilized; for REVERSE the display
will indicate “RR”. Attempt to start the engine. If the
installation was done correctly the engine should NOT
start.
Shifter Calibration
This is the ECS Calibration Procedure for actuators that
are already installed onto vehicles:
WARNING:
Park the vehicle on level ground. Set the
emergency brake and chock/block the tires
to prevent the vehicle from moving unexpect-
edly.
1. Remove the 3 screws that hold the cover plate on.
2. Loosen but don’t remove the socket head cap screw
that goes down through the center of the cap nut.
3. Loosen and remove the cap nut.
4. Notice the shift shaft adapter. If it looks like “Figure A”,
proceed to Step 5. If it looks like the one in “Figure B”,
proceed to Step 17.
Calibration Using Shift Shaft Adapter A.
5. Turn the ignition ON, and select NEUTRAL
6. Turn the Ignition OFF. The Shift Selector will stay
