Land Rover Discovery 99my To 03my Electrical Library 3rd Edition Rover Manual

							DESCRIPTION AND OPERATION
4.160DISCOVERY SERIES II
For the RH front door low range speaker the power amplifier supplies a positive output on a 
KG wire to connector interface C0459-3/C0744-3, then on a BK wire from the interface to 
the speaker. The negative output from the RH front door low range speaker returns on a BR 
wire to connector interface C0459-4/C0744-4, then on a KR wire to the power amplifier.
LH front speakers
The positive output from the head unit is connected by a BW wire to connector interface 
C0229-22/C0067-22, then by a Y wire from the interface to the power amplifier. From the 
power amplifier the positive output continues on a YB wire to connector interface C0459-1/
C0744-1 LHD or C0463-1/C0744-1 RHD, then on an RB wire from the interface to the LH 
front door mid range speaker. From the interface (C0459-1 LHD or C0463-1 RHD), a YB 
wire also supplies the positive output to the LH A post high range speaker.
The negative output of the LH front door mid range speaker is connected by a KB wire to 
connector interface C0459-2/C0744-2 LHD or C0463-2/C0744-2 RHD, then by a YK wire to 
the power amplifier. A YK wire also connects the negative output from the LH A post high 
range speaker to the connector interface (C0459-2 LHD or C0463-2 RHD). From the power 
amplifier, the negative output is connected by an O wire to connector interface C0229-23/
C0067-23, then by a BN wire to the head unit.
For the LH front door low range speaker the power amplifier supplies a positive output on an 
OB wire to connector interface C0463-3/C0744-3, then on a BK wire from the interface to 
the speaker. The negative output from the RH front door low range speaker returns on a BR 
wire to connector interface C0463-4/C0744-4, then on an OK wire to the power amplifier.
LH rear speakers
The positive output from the head unit is connected by a BY wire to connector interface 
C0229-24/C0067-24, then by a U wire from the interface to the power amplifier. From the 
power amplifier the positive output continues on a SK wire to connector interface C0435-1/
C0803-1, then on a BU wire from the interface to the LH rear door low range speaker. A 
second BU wire connects the positive output connection of the LH rear door low range 
speaker to the LH rear door high range speaker.
The negative output of the LH rear door high range speaker is connected by a BG wire to 
the LH rear door low range speaker. A second BG wire connects the negative output 
connection of the LH rear door low range speaker to connector interface C0435-2/C0803-2. 
From the interface the negative output is connected by an SO wire to the power amplifier. 
From the power amplifier the negative output is connected by a P wire to connector interface 
C0229-25/C0067-25, then by a BO wire to the head unit. 
						

							DESCRIPTION AND OPERATION
DISCOVERY SERIES II 4.161
Tail door speakers
The power amplifier is connected to tail door low range speaker 1 on a KB wire. From tail 
door low range speaker 1 the connection returns on an RB wire to the power amplifier.
The power amplifier is connected to tail door low range speaker 2 on an NB wire. From tail 
door low range speaker 2 the connection returns on a WB wire to the power amplifier. 
						

							DESCRIPTION AND OPERATION
4.162DISCOVERY SERIES II
TRAILER SOCKET
DESCRIPTION
General
The 7 pin trailer socket is mounted on the rear bumper to provide power feeds for the exterior 
lighting of a trailer or caravan. Refer to Description and Operation of individual exterior 
lighting circuits for trailer socket details. 
						

							DESCRIPTION AND OPERATION
DISCOVERY SERIES II 4.163
PARK DISTANCE CONTROL (PDC)
DESCRIPTION
General
Park Distance Control (PDC) provides an audible warning to the driver when any obstacles 
are in the path of the vehicle during reverse parking manoeuvres. The system consists of 
four ultrasonic sensors mounted in the rear bumper, an ECU a PDC switch, and a sounder.
For detailed information on PDC, refer to the Driving Aids section of the Workshop manual.
OPERATION
PDC Operation
Circuit supply
A feed from the battery positive terminal is connected by a R wire to the engine compartment 
fusebox, where it passes through fusible link 1 and fusible links 8. Fusible link 1 is connected 
in series with fusible link 7. Fusible link 7 provides a battery feed to the auxiliary circuits relay 
contacts.
Fusible link 8 is connected to the passenger compartment fusebox by an NW wire. From the 
passenger compartment fusebox, current flows to the ignition switch on an N wire.
Ignition switch supply
When the ignition switch is in position I, current flows from the ignition switch on an LGW 
wire to fuse 26 of the passenger compartment fusebox. Fuse 26 provides a feed to the 
auxiliary circuits relay coil on an LG wire. The relay coil is earthed on a B wire via earth 
header C0018.
When the ignition switch is in position II, current flows from the ignition switch on a Y wire to 
fuse 25 of the passenger compartment fusebox. Fuse 25 provides a feed to the reverse lamp 
switch (manual vehicles only) or the automatic transmission starter inhibitor/reverse lamp 
switch (automatic vehicles only) on a GY wire.
PDC ECU
When energised, the auxiliary circuits relay provides a feed to fuse 16 of the passenger 
compartment fuse box on a WG wire. Current flows through fuse 16 to the PDC ECU on an 
LGO wire. The PDC ECU is earthed on a B wire vie earth header C0707. 
						

							DESCRIPTION AND OPERATION
4.164DISCOVERY SERIES II
PDC Switch
The PDC switch is used to switch off PDC if a trailer is attached.
The PDC ECU provides a feed to the PDC switch on an RS wire. When the switch is 
pressed, the contacts close momentarily and a signal is returned to the PDC ECU on an S 
wire. When the PDC ECU registers this signal, it will deactivate PDC.
Reverse Gear
When reverse gear is selected, current from fuse 25 flows across the reverse lamp switch 
(manual vehicles only) or the automatic transmission starter inhibitor/reverse lamp switch 
(automatic vehicles only) to the PDC ECU on a GN wire. When the PDC ECU receives this 
feed it registers that reverse gear has been selected and activates PDC.
PDC Sensors
The PDC ECU provides a feed to connector interface C2403/C2404 on a WG wire, and from 
the connector interface to all four PDC sensors on W wires. The sensors are earthed on B 
wires to connector interface C2404/C2403, and from the connector interface to the PDC 
ECU on a BG wire.
The PDC sensors provide distance signals to the PDC ECU as follows:
zThe RH outer PDC sensor provides a signal to the ECU on an O wire.
zThe RH inner PDC sensor provides a signal to the ECU on a Y wire.
zThe LH inner PDC sensor provides a signal to the ECU on a U wire.
zThe LH outer PDC sensor provides a signal to the ECU on a G wire.
PDC Speaker
The PDC ECU powers the PDC speaker to give the driver an audible indication of the 
distance to an obstacle. The PDC ECU provides the speaker a positive signal on a K wire 
and a negative signal on an N wire. 
						

							CONNECTOR
DISCOVERY SERIES II 5.1
CONN ECTORCIRCUIT REFERENCE NUMBERS
CONNECTOR APPLICABILITY
General
The following table lists the circuit reference numbers against a description of the model or 
feature to which they apply.
This information should be used in conjunction with the connector pin-out tables on the 
following pages to determine the wire configuration of the vehicle being worked on.
Cct Model or Feature
1 All vehicles
2Td5
3V8
4 Td5 with EAT
5 V8 with EAT
6 V8 with EAT and cruise control
7 V8 manual transmission and cruise control
8 Cruise control
9EAT
10 ACE
11 ACE - Td5 only
12 ACE - V8 only
13 SLS
14 FBH
15 ATC
16 Non ATC
17 Rear A/C
18 SAI
19 LEVS 2
20 NAS, LEVS1 and non LEVS only
21 Non LEVS
22 V8 with 2 HO2S
23 V8 with 4 HO2S
24 High line audio
25 High line audio - Phillips
26 High line audio - Harman Kardon
27 High line audio plus telephone
28 All except high line audio
29 Mid-line audio 
						

							CONNECTOR
5.2DISCOVERY SERIES II
30 All except mid-line audio
31 Satellite navigation
32 Non satellite navigation
33 CD autochanger
34 NAS
35 Japanese specification vehicles only
36 NAS and Japanese specification vehicles only
37 All except NAS
38 German border police vehicles only
39 German border police with HFS
40 Folding door mirrors
41 HFS
42 Heated seats
43 Electric seats
44 RH window lift
45 LH window lift
46 Headlamp levelling
47 Diff lock
48 Non diff lock
49 Ignition/shift interlock
50 Ignition/shift interlock and diff lock
51 No Ignition/shift interlock or diff lock 
						

							CONNECTOR DETAILSC0003
DISCOVERY SERIES II
CONN ECTOR DE TAILS
DISCOVERY  SERIES  II
C0 003
Description:Horn-LH
Location:Behind the front grille
Colour:BLACK
Gender:Female
C0003
C0220
C0884
P7080
CavColCct
1BALL
2PGALL 
						

							C0004CONNECTOR DETAILS
DISCOVERY SERIES II
C000 4
Description:Horn-RH
Location:Front of vehicle - RH side
Colour:BLACK
Gender:Female
C0004
C0005
P7041
CavColCct
1BALL
2PGALL 
						

							CONNECTOR DETAILSC0005
DISCOVERY SERIES II
C0 005
Description:Motor-Cooling fan-1
Location:Front of vehicle - RH side
Colour:BLACK
Gender:Female
C0004
C0005
P7041
CavColCct
1BN15
2B15