Land Rover Freelander 2002my Electrical Library 3rd Edition Rover Manual

DESCRIPTION AND OPERATION
4.50FREELANDER 02MY
Instrument Pack
When cruise control is operational, the cruise control interface unit (C1959) sends a cruise 
active message to the instrument pack (C0230) via the CAN-BUS on YN (low) and YB (high) 
wires. This message is used to illuminate the cruise control lamp housed within the 
instrument pack. 

DESCRIPTION AND OPERATION
FREELANDER 02MY 4.51
CRUISE CONTROL – KV6
DESCRIPTION
General
Cruise control is switched on by pressing the cruise control master switch mounted on the 
centre console. The Set + and Res switches mounted on the steering wheel allow the 
driver to either set the vehicle speed as required or resume the last cruising speed set.
The cruise control system uses mechanical, electrical and vacuum operated devices to 
maintain vehicle speed at a setting selected by the driver. As vehicle...

DESCRIPTION AND OPERATION
4.52FREELANDER 02MY
OPERATION
General
Feed from the positive battery terminal (C0192) is supplied to the horn relay and fusible link 
3 of the engine compartment fuse box (C0632) on an R wire. Fusible link 3 (C0571) is 
connected to the ignition switch (C0028) by an N wire. When the ignition switch is turned to 
the ignition position, current flows across the switch (C0028) to fuse 35 of the passenger 
compartment fuse box (C0588) on a G wire. Fuse 35 (C0580) provides an...

DESCRIPTION AND OPERATION
FREELANDER 02MY 4.53
Set + Switch
The non latching Set + switch (C1254) is provided a feed via the horn relay (C0576) on a PY 
wire. When the switch is pulled back against spring pressure, the switch contacts close and 
a feed is provided to the cruise control ECU (C0239) via the rotary coupler (C0082) on a RW 
wire. 
If cruise control is active, and the switch is operated for the first time, the cruise control ECU 
will store the current vehicle speed in its memory and maintain...

DESCRIPTION AND OPERATION
4.54FREELANDER 02MY
Brake Lamp Switch – 02MY Vehicles
The Hall effect brake lamp switch (C0652) is provided an ignition feed from fuse 35 of the 
passenger compartment fuse box (C0580) on a W wire. The switch (C0652) is earthed on a 
B wire. When the brake pedal is in its normal position, the switch provides the cruise control 
interface unit (C1959) a low voltage (between approximately 0V and 2V) on a PG wire. 
When the brake pedal is pressed, this voltage rises to between...

DESCRIPTION AND OPERATION
FREELANDER 02MY 4.55
Engine Control Module (ECM)
The ECM (C0371) provides a feed to the interface unit (C1959) on a BU wire if the following 
conditions exist:

HDC is not activated.

The gear selector lever is not in the park, neutral, or reverse positions.

Engine speed is below 6,496 rpm.
For more information on the Siemens ECM, refer to the  Engine Management Systems – 
Siemens  section of the System Description and Operation Workshop manual.
Cruise Control Pump
When all...

DESCRIPTION AND OPERATION
4.56FREELANDER 02MY
Electronic Automatic Transmission (EAT) ECU
When all conditions for cruise control activation have been met, the cruise control ECU 
(C0239) provides a feed to the EAT ECU (C0932) on a WU wire. When the EAT ECU 
receives this feed, it enters its cruise control mode. For more information on EAT operation 
refer to the  Electronic Automatic Transmission (EAT) – 01MY , or  Electronic 
Automatic Transmission (EAT) – 02MY  section of this manual.
 
+  ELECTRONIC...

DESCRIPTION AND OPERATION
FREELANDER 02MY 4.57
ELECTRONIC AUTOMATIC TRANSMISSION (EAT) – 01MY
DESCRIPTION
General
The Jatco 5–speed automatic transmission fitted to Freelander is controlled by an Automatic 
Transmission Control Unit (ATCU). The ATCU 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;

The Engine Control Module (ECM) via the...

DESCRIPTION AND OPERATION
4.58FREELANDER 02MY
OPERATION
General
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 
the  Interior Lamps  section of this manual.
 
+  INTERIOR LAMPS. 
Operation of the main...

DESCRIPTION AND OPERATION
FREELANDER 02MY 4.59
ATCU
The ATCU monitors the operation of the automatic gearbox via four sensors:

The temperature of the automatic transmission fluid (ATF) is measured by the fluid 
temperature sensor. The fluid temperature sensor (C0243) receives a feed from the 
ATCU (C0932) on a WK wire. The temperature sensor return (C0243) to the ATCU 
(C0932) is via a KB wire. As the temperature of the ATF rises, so the resistance of the 
sensor decreases. The ATCU registers this drop...