Range Rover SE (LP) V8-4.0L (1995)
41.30.01
Time 0.40 hrs.
Replace Transfer Gearbox Shift Control Unit (TCU)
41.30.03
Time 0.45 hrs.
Replace Shift Control Motor
41.20.59
Time 0.60 hrs.
Replace Selector Shaft Seal (includes shift control motor replacement)
COMP CODE: 3X2P
Normal warranty policy and procedures apply
System Information
GENERAL DESCRIPTION
In order to understand and diagnose transfer gearbox control system related problems, a complete understanding of the range shift control process is necessary.
The TCU receives and transmits information to and from:
1.
Shift Control Motor Position Switch
2.
High/Low Request Switch
3.
Transfer Gearbox Speed Sensor
4.
Drivers selected range on the H-Gate
5.
GEMS ECM
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.