Control Area Network (CAN) (Freelander 2)

A high-speed CAN bus is used to create a local network that connects transmission control modules. The CAN bus connects the following electronic units:

• High-speed CAN bus
• TCM
• Instrument panel
• Steering wheel angle sensor
• Auxiliary Restraint System Control Module
• Engine Control Module (ECM)
• ABS module
• Adaptive Front Lighting System (AFS) Control Module
• Diagnostic connector

The CAN bus enables fast data exchange between modules. The CAN bus consists of two wires, which are designated CAN high (H) and CAN low (L). The wires are color-coded: black and yellow (CAN H) and yellow and brown (CAN L). The wires are twisted to reduce radio interference that occurs when transmitting data on the CAN bus. For more information, see the chapter: Communication Network (418-00 Module Communication Network, Description and Function).

A CAN bus malfunction may be accompanied by the following symptoms:

• The gearbox goes into default operating mode (emergency mode)
• The control of the torque converter lock-up clutch is disabled
• The current gear indicator on the LCD display of the information center stops working (this happens with any gearbox malfunction)

(Original article on the web portal: LRMAN.ru)