Land Rover Freelander 2004my Electrical Library Rover Manual

DESCRIPTION AND OPERATION
4.32FREELANDER 04MY
DIAGNOSTIC SOCKET
DESCRIPTION
General
The diagnostic socket is located behind the centre console, and is accessible from the 
drivers footwell on NAS vehicles, or the passenger footwell on all other vehicle derivatives. 
The socket is compliant with SAE directive J1962 standard, and allows attachment of 
TestBook, T4, or any other suitable diagnostic software tool. It allows detailed fault diagnosis 
checks to be carried out on the vehicle via an ISO 9141 K...

DESCRIPTION AND OPERATION
FREELANDER 04MY 4.33
CENTRAL CONTROL UNIT (CCU)
DESCRIPTION
General
For a full description of the CCU, refer to the  Control Units  section of the System 
Description and Operation Workshop manual.
OPERATION
General
For a full description of CCU operation, refer to the  Control Units  section of the System 
Description and Operation Workshop manual.
NOTE: The CCU is mounted directly onto the rear of the passenger compartment fuse box. 
As there is no harness connecting the...

DESCRIPTION AND OPERATION
4.34FREELANDER 04MY
CHARGING AND STARTING – Td4
DESCRIPTION
Starting
The starting system on the vehicle comprises a 12 volt starter motor which drives the engine 
to start the combustion process. The starter converts electrical energy into mechanical 
power. The vehicle electrical system must be capable of supplying sufficient power to enable 
the engine to be cranked.
Charging
The charging system comprises a battery and an alternator. The battery must be of a 
sufficient...

DESCRIPTION AND OPERATION
FREELANDER 04MY 4.35
Starting
Main Relay
The earth path for the main relay coil (C0576) is controlled by the Engine Control Module 
(ECM) (C0603) on a WK wire. The energised main relay provides a feed to fuse 1 which is 
also located in the engine compartment fuse box. Fuse 1 (C0576) provides a feed to the 
glow plug relay (C0215) on an RW wire.
For a detailed description of main relay operation, refer to the  Engine Management 
Systems – EDC  section of the System Description...

DESCRIPTION AND OPERATION
4.36FREELANDER 04MY
Starter Relay
Fuse 5 of the passenger compartment fuse box (C0581) provides an ignition switch crank 
feed to the immobilisation ECU (C0059) on a WR wire. If the vehicle has been successfully 
re-mobilised, the immobilisation ECU (C0059) provides a feed to the starter relay coil 
(C0576) on an RW wire. The starter relay is located in the engine compartment fuse box, 
and is earthed (C0576) on a B wire. A battery feed from fusible link 7 is now able to flow...

DESCRIPTION AND OPERATION
FREELANDER 04MY 4.37
Charging
Alternator
The battery (C0192) provides a permanent feed to the alternator (C0183) via the starter 
motor (C0631) on an R then N wire. Fuse 41 of the passenger compartment fuse box 
(C0583) provides an ignition feed to the alternator (C0226) on a W then GN wire. 
When the engine is turned over, the alternator (C0226) supplies the ECM (C0606) a Pulse 
Width Modulated (PWM) signal on a U wire. The ECM uses this PWM signal to calculate the 
electrical...

DESCRIPTION AND OPERATION
4.38FREELANDER 04MY
CHARGING AND STARTING – K SERIES
DESCRIPTION
Starting
The starting system on the vehicle comprises a 12 volt starter motor which drives the engine 
to start the combustion process. The starter converts electrical energy into mechanical 
power. The vehicle electrical system must be capable of supplying sufficient power to enable 
the engine to be cranked.
Charging
The charging system comprises a battery and an alternator. The battery must be of a 
sufficient...

DESCRIPTION AND OPERATION
FREELANDER 04MY 4.39
Starting
Main Relay
Fuse 22 of the passenger compartment fuse box (C0580) provides an ignition feed to the 
Engine Control Module (ECM) (C0913) on a W wire. When the ECM receives this feed, it 
energises the main relay by providing an earth path for the relay coil (C0576) on a WK wire. 
The energised main relay is now able to provide a feed to the fuel pump relay. The fuel pump 
relay is also located in the engine compartment fuse box.
For a detailed...

DESCRIPTION AND OPERATION
4.40FREELANDER 04MY
Starter Motor and Starter Motor Solenoid
The starter motor solenoid coil (C0179) receives a feed from the energised starter motor 
relay (C0572) on an NR wire (see above). The energised starter motor solenoid allows a 
battery feed (C0178) to flow across the switch contacts and power the starter motor.
Central Control Unit (CCU)
The CCU (C0428) receives a feed from the inertia switch (C0123) via the engine 
compartment fuse box (C0576) on a UG wire. If this...

DESCRIPTION AND OPERATION
FREELANDER 04MY 4.41
Ignition/No Charge Warning Lamp
Fuse 18 of the passenger compartment fuse box (C0589) provides an ignition feed to the 
ignition/no charge warning lamp (C0233) on a G wire. Current flows across the lamp 
(C0233) and is provided an earth path by the alternator (C0185) on an NY wire. The warning 
lamp will now illuminate.
When the alternator is charging, it provides a feed to the warning lamp (C0233) on the NY 
wire. Because the potential difference across the...