The diagnostic connector itself is not a controller.
Instead, the IFAK cable that leads to the laptop
computer contains the controller that will make
contact with the CANbus system when plugged into
the diagnostic connector.
The optional Electronic Climate Control has an in-
dependent control system that does not communi-
cate through CANbus wires 900 and 901.
The CANbus inverse wire and data wire are twis-
ted together to reduce sensitivity to electromag-
netic interference. For the same purpose there are
termination resistors at the extreme ends of the
string of controllers. The CANbus system will not
function if both 120 Ohm resistors are faulty or dis-
connected.
Figure 6. CANbus Circuit
Electrical Schematic and System Description
2200 SRM 1944
18
Содержание C236
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