Land Rover Defender 1999 Td5 Electrical Library Rover Manual

DESCRIPTION AND OPERATION
DEFENDER 1999 MY4.7
DIAGNOSTIC SOCKET
DESCRIPTION
The diagnostic socket is located under the cubby box. The socket is
constructed to ISO standard and allows attachment of TestBook or any other
ISO standard scantool. The diagnostic socket allows diagnostic information
from the Anti-lock Braking System (ABS) ECU, the alarm ECU, or the Engine
Control Module (ECM) to be retrieved.
OPERATION
Feed from the battery positive terminal is connected to fusible link 5 of the
engine...

DESCRIPTION AND OPERATION
4.8
DEFENDER 1999 MY
STARTING AND CHARGING - Td5
DESCRIPTION
The charging system consists of an alternator containing a rectifier pack and
regulator to maintain a constant direct (dc) voltage in the system. The
alternator is belt driven from the crankshaft and is cooled by a fan mounted
behind the pulley. The alternator has a fixed coil wound stator in which a field
coil rotor rotates. Slip rings conduct current to and from the field coils via 2
carbon brushes. The regulator...

DESCRIPTION AND OPERATION
DEFENDER 1999 MY4.9
OPERATION - CHARGING
The battery positive terminal provides a feed to fusible link 1 and fusible link 5
of the engine compartment fuse box (C0632-1) on a brown wire. Both are
connected in parallel.
Fusible link 5 (C0570-2) provides a feed to both the starter relay (C0151-2) and
the ignition switch (C0028-1) on brown/white wires. With the ignition switch in
position II (C0094-1), current flows to fuse 6 and fuse 7 of the passenger
compartment fuse box...

DESCRIPTION AND OPERATION
4.10
DEFENDER 1999 MY
When the voltage applied by the alternator to the ignition/no charge warning
lamp equals that provided by fuse 7 of the passenger compartment fuse box
the warning lamp is extinguished. This shows the alternator is producing
battery charging current.
When the battery is at a low state of charge or the current draw from the
electrical functions of the vehicle causes a voltage drop, the alternator
automatically charges at its maximum rate (dependant on rotor...

DESCRIPTION AND OPERATION
DEFENDER 1999 MY4.11
ENGINE MANAGEMENT - Td5
Refer to Workshop Manual for description and operation. 

DESCRIPTION AND OPERATION
4.12
DEFENDER 1999 MY
FUEL PUMP - Td5
DESCRIPTION
The fuel pump is located above the fuel tank, and is controlled by the Engine
Control Module (ECM).
See ENGINE MANAGEMENT - Td5.
OPERATION
Feed from the battery positive terminal is connected to fuse 4 and fusible link 5
of the engine compartment fuse box (C0632-1) by a brown wire. Fusible link 5
(C0570-2) is connected to the ignition switch (C0028-1) by a brown/white wire.
With the ignition switch in position II (C0094-1)...

DESCRIPTION AND OPERATION
DEFENDER 1999 MY4.13
ANTI-LOCK BRAKING SYSTEM (ABS) - Td5
DESCRIPTION
The Anti-lock Braking System (ABS) is controlled by the ABS ECU, located
under the RH front seat. The system comprises of the ECU, ABS wheel speed
sensors on each wheel, and an ABS modulator.
OPERATION
Feed from the battery positive terminal is connected to fusible link 1 and fusible
link 5 of the engine compartment fuse box (C0632-1) on a brown wire. Fusible
link 1 is wired in series with fuse 2, which...

DESCRIPTION AND OPERATION
4.14
DEFENDER 1999 MY
ABS modulator and ECU
The ABS ECU provides outputs to, and receives inputs from the ABS
modulator as follows;
·Output from ABS ECU (C0506-1) to ABS modulator (C0501-1) to drive LH
front outlet valve on a slate/white wire.
·Output from ABS ECU (C0506-2) to ABS modulator (C0501-2) to drive LH
front inlet valve on a slate/red wire.
·Earth monitoring signal from ABS modulator (C09501-8) to ABS ECU
(C0506-3) on a black wire.
·Output from ABS ECU (C0506-4) to ABS...

DESCRIPTION AND OPERATION
DEFENDER 1999 MY4.15
Wheel speed sensors
The ABS ECU also receives variable inputs from the four wheel speed sensors
as follows;
·The LH front wheel speed sensor (C0516-1 & C0516-2) to the ABS ECU
(C0505-1 & C0505-2 respectively) on a pair of white wires.
·The RH front wheel speed sensor (C0517-1 & C0517-2) to the ABS ECU
(C0505-4 & C0505-5 respectively) on a pair of green wires.
·The LH rear wheel speed sensor (C0502-1 & C0502-2) to the ABS ECU
(C0505-7 & C0505-8 respectively)...

DESCRIPTION AND OPERATION
4.16
DEFENDER 1999 MY
Instrument pack
The ABS ECU will inform the driver of any faults within the ABS or traction
control systems (if fitted). The ABS ECU (C0504-9) supplies a feed to the brake
fluid warning lamp (C0230-14) on a black/white wire if the level of fluid in the
brake fluid reservoir reaches the minimum mark. The warning lamp (C0230-8)
is earthed on a black wire.
If the ABS ECU detects a fault within the ABS system, it supplies a feed
(C0504-18) to the ABS warning...