6
Operation
Start-Up and Power Down
Start-Up
1. Turn ignition key to On with the engine off to allow the transmission
system to power-up.
Note:
Engine cranking is delayed until the transmission system power-up
is complete and the gear display shows a solid “N” indicating the transmis-
sion is in neutral gear position.
2. Once a solid "N" is indicated in the gear display, start the engine.
3. Allow vehicle air system pressure to build to normal operating range.
4. Depress and hold the vehicle service brake.
Note:
If the vehicle service brake is not depressed prior to selecting a gear
lever position (shift mode) using the transmission driver interface device,
the request will be denied.
5. Select the desired gear lever position (shift mode) using the transmis-
sion driver interface device.
Note:
If the initial gear lever position (shift mode) or start gear change
request was denied, select Neutral (N) mode, depress and hold the vehicle
service brake and re-select.
Note:
The transmission system may automatically override or prevent the
driver’s Upshift or Downshift request on the transmission driver interface
device or automatically initiate a gear change based on vehicle operating
conditions. Refer to
“Transmission MANUAL / LOW Mode Override” on
6. Release the vehicle parking brake.
