Range Rover HSE (LP) V8-4.6L (1997)
6.
Automatic Transmission Control Module (TCM)
7.
The BeCM
Using this information the TCU energizes an electric motor to shift ranges in the transfer gearbox.
Study the block diagram (Figure 1) to understand the relationships between the various components in the transfer gearbox shift control system.
The information received by the TCU from the shift control motor encoder switches regarding the motor's position and from the driver's selected range results in the following:
^
Movement of the shift control motor from one range to another.
^
Information to the driver through the Message Centre and H-Gate illumination.
CAUTION:
Range changes should be made with the vehicle stationary. It may be possible to change ranges with the vehicle traveling at a very slow speed, however this is not recommended.