2002 LAND ROVER DISCOVERY ignition

WINDOWS
DESCRIPTION AND OPERATION 86-5-11
Operation
Front windows
In order for the windows to operate the ignition switch must either be in position II, or in the off position with the ignition
switched-off timeout operational.
The front window switches provide ground signals to the BCU, which operates the windows.
One-touch down operation
The front windows will open completely with a single touch on the window down switch.
In order for the one-touch down to operate, the following conditions must exist:
lIgnition switch in position II, or in the off position with the ignition switched-off time out operational.
lFront window switch pressed for less than 0.4 second.
When the front window down switch is pressed for less than 0.4 second, the window opens completely. Pressing the
window up switch for less than 0.2 second stops the movement of the window. The BCU stops one-touch down
operation when it detects window stall current or after 10 seconds of window operation.
Depending on market, one-touch down operation can be fitted on both front windows or on the driver's side only.
Rear windows
In order for the windows to operate the ignition switch must either be in position II, or in the off position with the ignition
switched-off timeout operational.
The rear windows operate by the switch providing both power and ground to the window motor. Pressing one side of
the switch provides a power and earth path to the window motor that allows the window motor to operate in one
direction. Pressing the other side of the switch reverses the power and earth, which allows the window motor to
operate in the opposite direction.

HARNESSES
86-7-8 REPAIRS
35.Secure harness to LH side of body with cable
tie clips and retainers.
36.Connect and secure multiplugs to lower LH 'A'
post.
37.Feed harness through roof to centre.
38.Secure harness behind bonnet release cable.
39.Connect rear washer pipe at lower 'A' post and
secure with clip.
40.Secure harness to roof with clips.
41.Connect multiplug to interior mirror, ARC
accelerometer.
42.Position sound deadening panels and secure
with clips.
43.Fit headlining.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Headlining.
44.Fit fascia panel.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Fascia.
Harness - engine - V8
$% 86.70.17
Remove
1.Remove upper inlet manifold.

+ MANIFOLDS AND EXHAUST
SYSTEMS - V8, REPAIRS, Gasket - inlet
manifold - upper - Without Secondary Air
Injection.
2.Disconnect injector multiplugs, release harness
from fuel rail.
3.Disconnect ignition coil multiplugs.

HARNESSES
REPAIRS 86-7-23
62.Remove 2 nuts securing earth headers to LH
lower 'A' post.
63.Disconnect 4 multiplugs from body harness.
64.Remove clip securing washer pipe located at
lower 'A' post
65.Remove pipe.66.Disconnect 2 multiplugs from front door
harness.
67.With assistance withdraw LH side harness into
interior.
68.Disconnect ignition harness multiplug from
passenger compartment fusebox.
69.Remove nut securing passenger compartment
fusebox to steering support bracket.

HARNESSES
86-7-24 REPAIRS
70.Release fusebox and disconnect 8 multiplugs.
71.Remove fusebox.
72.Disconnect 7 multiplugs from ignition passive
coil and steering column switch assembly.

HARNESSES
86-7-28 REPAIRS
18.Secure multiplugs to steering column support
bracket and connect brake and clutch pedal
multiplugs.
19.Connect multiplugs to column switch and
passive coil.
20.Position passenger compartment fusebox,
connect multiplugs, fit fusebox to fascia and
secure with nut.
21.Connect ignition switch multiplug to fuse box.
22.With assistance feed LH side of harness into
engine bay.
23.Connect multiplugs to front door harness and
body harness.
24.Position earth headers to LH lower 'A' post and
secure with nuts.
25.Connect multiplugs to ECU pack.
26.Position harness in engine bay.
27.Connect and secure heated front screen
multiplugs.
28.Fit plenum molding.

+ HEATING AND VENTILATION,
REPAIRS, Plenum Air Intake.
29.Connect multiplugs to ABS sensor and fuel
cut-off switch.
30.Using draw string feed harness through inner
wing, remove draw string, connect repeater
lamp multiplug and fit lamp.
31.Connect multiplugs to ABS modulator.
32.Feed harness through to front panel.
33.Position body earth leads and secure with
bolts.
34.Connect washer reservoir multiplugs and
pipes, secure pipes with clips.
35.Secure fog lamp multiplug.
36.Secure earth header behind headlamp.
37.Connect multiplugs to headlamp level motor,
headlamp and side lamp.
38.Fit indicator lamp

+ LIGHTING, REPAIRS, Lamp - front
repeater.
39.Connect multiplug to LH horn.
40.Feed harness to ACE accelerometer, connect
multiplug and secure with cable ties.
41.Connect cruise control, ABS sensor and brake
fluid level switch multiplugs.
42.Connect engine harness multiplug and feed
harness along RH wing to fuse box.
43.Using draw string pull harness through inner
wing, remove draw string, connect repeater
lamp multiplug and fit lamp. 44.Connect chassis harness multiplugs.
45.Position engine bay fuse box and connect
multiplugs, fit fuse box and secure with screws.
46.Connect multiplugs to front of fuse box.
47.Position battery and starter cables and secure
with screws.
48.Fit fuse box cover.
49.Position earth lead and secure with nut.
50.Feed harness through to front panel.
51.Secure fog lamp multiplug.
52.Connect headlamp level motor, headlamp and
side lamp multiplugs.
53.Fit indicator lamp.

+ LIGHTING, REPAIRS, Lamp - front
repeater.
54.Secure harness to RH front panel.
55.Connect cooling fan and horn multiplug.
56.Secure harness to lower support rail.
57.Connect receiver drier and air temperature
sensor multiplugs.
58.Fit front bumper.

+ EXTERIOR FITTINGS, REPAIRS,
Bumper assembly - front.
59.Fit battery tray.
60.Fit air filter assembly.

+ ENGINE MANAGEMENT SYSTEM -
V8, REPAIRS, Air cleaner assembly.
61.Position both lower 'A' post trims and secure
with studs.
62.Fit heater assembly.

+ HEATING AND VENTILATION,
REPAIRS, Heater assembly - models with
air conditioning.

+ HEATING AND VENTILATION,
REPAIRS, Heater assembly - models
without air conditioning.

DRIVING AIDS
DESCRIPTION AND OPERATION 86-8-3
1PDC sounder
2PDC switch
3Fusible link
4Ignition switch
5Fuse
6PDC ECU
7PDC sensors

DRIVING AIDS
DESCRIPTION AND OPERATION 86-8-5
On vehicles without rear air conditioning, the bracket is located inboard on the LH 'E' post, adjacent to the luggage
compartment trim panel. On vehicles with rear air conditioning, the bracket is located outboard on the LH 'E' post,
adjacent to the outer body panel.
The bracket has integral studs which provide for the attachment of the ECU with nuts. The ECU is located with the
harness connectors uppermost to assist access. The PDC sounder is located on the opposite side of the bracket and
is secured with screws, lockwashers and nuts.
PDC ECU Connector Pin Details
aConnector C0958
bConnector C0957
Connector C0958
Pin No. Description Input/Output
1 Ignition switch power supply Input
2 Sounder - Negative Input
3 Not used–
4 PDC Switch Input
5 Not used–
6 Reverse Gear signal Input
7 Not used–
8 Ground–
9 Not used–
10 Sounder - Positive 12V supply Output
11 Not used–
12 Not used–
13 PDC Switch LED Output
14 to 16 Not used–

DRIVING AIDS
86-8-6 DESCRIPTION AND OPERATION
Connector C0957
Inputs and Outputs
Two connectors provide the interface between the PDC ECU and the external PDC components.
The ECU receives inputs from the following:
lReverse lamp circuit – for system activation when reverse gear is selected
lPDC switch – for activation and de-activation of the system
lIgnition switch – power supply for system operation.
The ECU outputs to the following:
lSensors – power and ground connections
lSensor – digital signal transmit and receive signals
lSounder – signal for sounder operation
lPDC Switch – power supply for switch LED operation.
Diagnostics
The PDC ECU has no diagnostic connection to enable faults to be retrieved using TestBook/T4. An on-board
diagnostic routine monitors the system and alerts the driver to a system fault by emitting a tone from the sounder.
If a PDC system fault has occurred, the sounder will emit a continuous tone for 3 seconds and the PDC switch LED
will flash continuously when reverse gear is selected.
Pin No. Description Input/Output
1 Not used–
2 Sensor - RH Inner - Signal Input
3 Sensor - Rear LH Inner - Signal Input
4 Sensor - Rear RH Outer - Signal Input
5 Sensor - Rear LH Outer - Signal Input
6 and 7 Not used–
8 Ground - All sensors Input
9 Not used–
10 Power Supply - All sensors Output
11 and 12 Not used–