Service Manual

Page 32
one Touch SYSTeM overvieW
The Rollx Vans One Touch Controller, known as the OTC, is a Single Board Computer specifically
designed for the Rollx Vans system.
The OTC system was designed to be independent to the operation of the Chrysler computer system.
When power is removed from the OTC, it has no effect on the operation of the Chrysler system as long as
the OTC Shunt Plug is installed into the OTC Main Harness on all 2008 Chrysler Vans due to the CAN
BUS system (see OTC Wiring Diagram for more information).
The OTC is a low power system. When the OTC is in Sleep Mode with the Display disabled, it typically
draws less then 10ma of current from the battery. When awake in Idle Mode (not running a cycle) with the
Display enabled, it typically draws less than 200ma of current from the battery.
The current state of the OTC can be determined by viewing the Display. During open or close operation
the progress of the system can be tracked by watching the Display.
OTC V8.0
8
Sequence of Operation
Open Cycle
1) The OTC is activated by any Rollx Vans User Switch or Remote being pressed.
2) Door unlock command sent (1 sec.) To Front Passenger Door Control Module to unlock all doors.
3) Door open command sent to OEM B-Pillar Door Open/Close Button to open the passenger sliding door.
4) Door starts to open.
5) Kneeler motor is turned on and starts to lower van.
*If door fails to open within 2 seconds of User Switch being pressed, cycle stops (van unkneels and
cycle is ended)
6) Door reaches open position and activates Rollx Vans Door Open Limit Switch.
7) Passenger sliding door is disabled by OTC interrupting the CAN Bus signal with built in relay.
8) Ramp motor is turned on and starts to deploy.
9) Kneeler stops lowering when Kneel Down Limit Switch is activated.
10) Ramp stops deploying when Ramp Down Limit Switch is activated.
11) OTC enters Idle Mode.
12) OTC enters Sleep Mode.
Close Cycle
1) The OTC is activated by any Rollx Vans User Switch or Remote being pressed.
2) Ramp motor is turned on and starts to stow.
3) After a few seconds (ramp is off the ground and begun to slide into van) kneeler motor is turned on and
starts to raise the van.
4) Kneeler stops raising when Kneel Up Limit Switch is activated.
5) Ramp stops stowing when Ramp Up Limit Switch is activated.
6) Passenger sliding door is enabled by OTC reconnecting the CAN Bus signal with built in relay.
7) Door close command sent to OEM B-Pillar Door Open/Close Button to close the passenger sliding door.
8) OTC receives signal from OEM Door Ajar Pin Switch that door is closed.
9) OTC enters Idle Mode.
10) OTC enters Sleep Mode.
Note: There are “Watch Dogs” programmed in the OTC software that act as timers to end a function if the
function does not complete within a certain amount of expected and very reasonable time.