Automatic Transmission - Description & Operation Land Rover Freelander L314

General

The Jatco 5-speed automatic transmission fitted to Freelander is controlled by an Electronic Automatic Transmission Electronic Control Unit (EAT ECU). The EAT ECU is located inside the engine E-box, and receives information from the following sources to calculate when to operate the solenoid valves contained within the gearbox to enable quick, smooth, quiet gear changes

1. z The Engine Control Module (ECM) via the CAN-BUS
2. z The instrument pack via the CAN-BUS
3. z The cruise control ECU
4. z The automatic transmission selector
5. z The brake pedal switch
6. z The automatic gearbox sensors.

The Jatco automatic gearbox also has a number of different operating modes. When the ignition switch is first turned to the 'ignition' position, the gearbox will always revert to the 'Normal' mode. For a full description of the 5-speed automatic transmission, refer to AUTOMATIC GEARBOX -- JATCO of the System Description and Operation Workshop manual.

Feed from the positive battery terminal (C0192) is supplied to the main relay and fusible link 3 (C0632) on an R wire. Both are located in the engine compartment fuse box.

The battery also provides a feed to fusible link 4 of the engine compartment fuse box (C0632) on vehicles fitted with an instrument dimmer switch. For more information, refer to INTERIOR LAMP - ELECTRICAL .

See also:
• AUTOMATIC GEARBOX -- JATCO
• INTERIOR LAMP - ELECTRICAL