Freelander System Description and Operation
CONTROL UNITS
86-3-6
DESCRIPTION AND OPERATION
Radio Frequency (RF) Receiver
The RF receiver is part of the security system and relays data from the remote transmitter (plip) to the CCU. The RF
receiver is located on top of the instrument pack, between the housing and the face plate.
SECURITY, DESCRIPTION AND OPERATION, Description.
Immobilisation ECU
The immobilisation ECU controls operation of the starter motor to provide the engine immobilisation function of the
security system. The immobilisation ECU is secured to the rear of the fascia near the vehicle centre-line.
SECURITY, DESCRIPTION AND OPERATION, Description.
Supplementary Restraint System (SRS) Diagnostic Control Unit (DCU)
The SRS DCU controls the operation of the vehicle's airbags and seat belt pretensioners. The SRS DCU is attached
to the transmission tunnel below the heater assembly.
RESTRAINT SYSTEMS, DESCRIPTION AND OPERATION, Description.
Electronic Automatic Transmission (EAT) ECU
The EAT ECU controls gear changing and torque converter lockup. The EAT ECU is installed in the Environmental
(E) box in the engine compartment.
AUTOMATIC GEARBOX - JATCO, DESCRIPTION AND OPERATION, Description.
Engine Control Module (ECM)
The ECM controls all aspects of engine operation and interfaces with the security system during engine starting. The
ECM is installed in the E-box in the engine compartment.
ENGINE MANAGEMENT SYSTEM - SIEMENS, DESCRIPTION AND OPERATION, Description.
Cooling Fan ECU
The cooling fan ECU controls the speed of the two cooling fans. The cooling fan ECU is installed in the rear upper left
corner of the cooling fan housing.
COOLING SYSTEM - K SERIES KV6, DESCRIPTION AND OPERATION, Description.
Anti-lock Braking System (ABS) Modulator
The brake system incorporates an ABS ECU that controls the operation of the hydraulic modulator to provide the ABS,
electronic brake force distribution, traction control and hill descent control functions. The ABS ECU is attached to the
hydraulic modulator, which is installed in the front right corner of the engine compartment.
