glove box LAND ROVER DISCOVERY 2002 User Guide

SUNROOF
DESCRIPTION AND OPERATION 76-6-5
Description
General
The sunroof system consists of a front and a rear sunroof assembly. Both sunroof assemblies slide and tilt to open.
The sunroof system consists of the following components:
lSunroof ECU.
lBCU.
lFront sunroof switch.
lFront sunroof motor and microswitch.
lRear sunroof - front switch.
lRear sunroof - rear switch.
lRear sunroof isolation switch.
lRear sunroof motor and microswitch.
The BCU enables operation of the sunroof ECU. If the sunroof ECU does not receive an enable signal from the BCU,
neither sunroof assembly operates. The BCU is located behind the glovebox. The sunroof ECU is located above the
headlining next to the front sunroof assembly.
TestBook diagnoses the sunroof ECU.
Front sunroof switch
The front sunroof switch is located in the roof console above the windscreen in front of the front sunroof. It controls
the front sunroof motor via the sunroof ECU.
The front sunroof switch supplies an earth signal to the sunroof ECU. The pin at the ECU that receives the earth
signal determines whether ECU causes the sunroof to open or close.
TestBook cannot monitor the state of the front sunroof switch.
The following table lists the values which can be measured at the listed ECU pins when the conditions outlined are
met:
Signal values (connector connected)
Connector/Pin
No.Condition Resistance, ohms
C0784-2 Ignition in position II, front sunroof switch released > 10,000
C0784-2 Ignition in position II, front sunroof switch open < 0.5
C0785-7 Ignition in position II, front sunroof switch released > 10,000
C0785-7 Ignition in position II, front sunroof switch closed < 0.5

HEATING AND VENTILATION
REPAIRS 80-15
REPAIRS
Heater control and fan switch
$% 80.10.02
Remove
1.Remove louvre panel assembly.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Louvre panel assembly - centre
fascia.
2.Release temperature and air distribution cable
abutments from heater control housing and
disconnect inner cables from controls.
3.Disconnect multiplugs from switches.
4.Disconnect multiplug from control illumination.
5.Remove heater control.
6.Remove 3 switches from heater control.
Refit
1.Fit switches to heater control housing.
2.Position heater control assembly and connect
multiplugs to switches and illumination.
3.Connect heater control cables and secure
outer cable abutments to casing.
4.Fit louvre panel assembly.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Louvre panel assembly - centre
fascia.
Cables - heater control
$% 80.10.06
Remove
1. Driver temperature control and air flow
control cables:Release fixings and lower
fascia fuse box access cover.
2. Passenger temperature control cable:
Remove 4 screws securing glove box, release
catch and remove glove box.

HEATING AND VENTILATION
80-16REPAIRS
3.Remove louvre panel assembly.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Louvre panel assembly - centre
fascia.
4.Release control cable abutment from control
housing and disconnect inner cable from
control.
5.Release clip securing control outer cable to
heater case and disconnect inner cable from
flap lever.
6.Remove control cable. Refit
1.Fit new control cable, connect inner cable to
control and secure abutment to control
housing.
2.Fit other end of inner cable to flap lever.
3.Position control to maximum heat for
temperature control cables or demist for air
flow control cable, hold flap lever in fully closed
position and secure outer cable in clip on
heater casing.
4.Refit louvre panel assembly.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Louvre panel assembly - centre
fascia.
5. Driver temperature and air flow control
cables: Close fuse access cover and secure
fixings.
6. Passenger temperature control cable: Refit
glove box and secure with bolts.

HEATING AND VENTILATION
REPAIRS 80-17
Servo - recirculation flap
$% 80.10.18
Remove
1.Remove 4 studs securing passenger toe board
and remove toe board.
2.Remove 4 screws securing glove box, release
catch and remove glove box. 3.Remove bolt securing BCM, release BCM from
retaining peg and lower BCM.
4.Remove 2 nuts securing ECU assembly and
lower ECU assembly to gain access to servo
screws.
5.Disconnect multiplug from servo.
6.Remove 2 screws securing servo.
7.Release servo, disconnect operating lever and
remove servo.

HEATING AND VENTILATION
80-18REPAIRS
Refit
1.Position servo and connect operating lever.
2.Fit and tighten screws securing servo.
3.Connect multiplug to servo.
4.Position ECU assembly, fit and tighten nuts.
5.Position BCM, fit and tighten bolt.
6.Position toe board and secure with studs.
7.Position glove box, fit and tighten screws.
Switch - recirculation control
$% 80.10.21
Remove
1.Remove louvre panel assembly.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Louvre panel assembly - centre
fascia.
2.Disconnect multiplug from recirculation switch.
3.Remove recirculation switch from heater
control panel.
Refit
1.Fit recirculation switch to heater control panel
and connect multiplug.
2.Fit louvre panel assembly.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Louvre panel assembly - centre
fascia.

HEATING AND VENTILATION
REPAIRS 80-25
11.Disconnect both evaporator drain hoses.
12.Remove front heater ducting.
13.Remove 4 nuts and bolt securing heater
assembly, release heater assembly from
bulkhead grommet and remove from vehicle.
Refit
1.Position heater assembly to bulkhead, locate
heater in bulkhead grommet.
2.Fit nuts and bolt securing heater and tighten to
16 Nm (12 lbf.ft).
3.Position RH fascia support bracket, fit and
tighten nuts.
4.Fit front heater ducting.
5.Position centre console support bracket, fit and
tighten screws.
6.Connect evaporator drain hoses.
7.Position heater motor to heater casing, fit nuts
and bolt and tighten to 19 Nm (14 lbf.ft).
8.Connect multiplug heater motor.
9.Position rear heater ducting and secure with
screws.
10.Fit fascia.

+ INTERIOR TRIM COMPONENTS,
REPAIRS, Fascia.
11.Using new 'O' rings, position air conditioning
pipes to evaporator fit bolts and tighten to 5 Nm
(3.7 lbf.ft).
12.Position heater hoses and secure hose clips.
13.Recharge air conditioning system.

+ AIR CONDITIONING, REFRIGERANT
RECOVERY, RECYCLING AND
RECHARGING, Refrigerant recovery,
recycling and recharging.
14.Refill cooling system.
l

+ COOLING SYSTEM - V8,
ADJUSTMENTS, Drain and refill.
l

+ COOLING SYSTEM - Td5,
ADJUSTMENTS, Drain and refill.
Blower assembly
$% 80.20.12
Remove
1.Remove 4 studs securing toe board and
remove toe board.
2.Remove 4 screws securing glove box, release
catch and remove glove box.
3.Disconnect battery earth lead.

HEATING AND VENTILATION
80-26REPAIRS
4.Disconnect multiplugs from blower motor.
5.Remove 8 bolts securing passenger side of
fascia panel.
6.Carefully ease fascia away from bulkhead
7.Remove 3 bolts securing blower motor support
bracket and remove bracket.
8.Remove 2 nuts securing motor assembly.
9.Release blower motor assembly from heater
and manoeuvre from under fascia.
Refit
1.Position blower motor assembly under fascia
and locate to heater casing.
2.Position support bracket, fit and tighten nuts
and bolts.
3.Align fascia, fit bolt to support bracket and
tighten to 26 Nm (19 lbf.ft).
4.Connect multiplugs to blower motor.
5.Connect battery earth lead.
6.Fit glove box, align hinges and tighten screws.
7.Position toe board and secure with studs.
Motor - blower
$% 80.20.15
Remove
1.Remove 4 studs securing toe board and
remove toe board.
2.Remove 4 screws securing glove box, release
catch and remove glove box.

HEATING AND VENTILATION
REPAIRS 80-27
3.Remove screw securing harness to blower
motor and release harness.
4.Disconnect multiplug from blower motor.
5.Remove 3 screws securing blower motor to
casing and remove blower motor.
Refit
1.Position blower motor to casing and secure
with screws.
2.Connect multiplug to blower motor.
3.Position harness and secure clip with screw.
4.Fit glove box, align hinges and tighten screws.
5.Position toe board and secure with studs.
Resistor pack - power resistor A/C
$% 80.20.17
Remove
1.Remove 4 studs securing toe board and
remove toe board.
2.Remove 4 screws securing glove box, release
catch and remove glove box.

HEATING AND VENTILATION
80-28REPAIRS
3.Disconnect multiplug from resistor.
4.Remove screws securing resistor, release and
remove resistor.
Refit
1.Position resistor and secure with screw.
2.Connect multiplug to resistor.
3.Position glove box, fit and tighten screws.
4.Position toe board and secure with studs.
Heater matrix
$% 80.20.29
Remove
1.Remove heater assembly.

+ HEATING AND VENTILATION,
REPAIRS, Heater assembly - models with
air conditioning.
2.Remove 2 screws securing coolant pipe
saddles and remove saddles.
3.Loosen screws securing coolant pipes to
matrix, release clamps and remove coolant
pipes.
4.Remove and discard 'O' rings.
5.Remove heater matrix.
Refit
1.Position heater matrix, using new 'O' rings fit
coolant pipes and align clamps.
2.Fit saddle clamps and secure with screws
3.Tighten coolant pipe clamp screws.
4.Fit heater assembly.

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

WIPERS AND WASHERS
84-8 DESCRIPTION AND OPERATION
Description
General
All markets have a common wiper system with headlamp powerwash as an option.
The wipers system comprises two front wipers and one rear wiper which are powered by electric motors. A washer
reservoir is located in the front left hand wheel arch and is fitted with two electric pumps. Each pump supplies washer
fluid to either the front or rear screens. On certain models, a third pump can be fitted to operate a headlamp power
wash function. Operation of the front and rear wipers and washers is controlled by the driver using switches located
on a steering column stalk and push button switches on the fascia.
Control of the wipers and washers is achieved by the following components:
lBCU.
lIDM.
lFront wiper relay.
lFront wash/ wipe switch.
lVariable delay switch.
lFront wiper motor assembly.
lFront washer pump motor.
lRear wiper relay.
lRear wiper switch.
lRear washer switch.
lRear wiper motor.
lRear washer pump motor.
Both the Body Control Unit (BCU) and the Intelligent Driver Module (IDM) control the wiper system. The BCU controls
the time delay function of the wiper system and is located below and behind the passenger glovebox. During engine
cranking the BCU prevents wiper functions. Two relays are located in the passenger compartment fusebox. The
relays control the delay operation of the front and rear wipers. The relays are an integral part of the fusebox and
cannot be renewed separately.
Power for the wiper system is supplied by the IDM, which is integral with the passenger fusebox and cannot be
renewed as a component. A serial communication link allows communication between the IDM and the BCU.
The system has diagnostic capabilities through TestBook.
Front wipers
The two front windscreen wipers are operated by a linkage assembly and an electric motor located under the plenum
grill below the windscreen. The linkage and motor assembly is handed for left and right hand drive vehicles. The motor
is an integral part of the linkage and cannot be replaced separately.
The linkage comprises a pressed steel mounting plate which provides for the attachment of a wheel box at each end.
The mounting plate is secured to the bulkhead with flanged nuts which attach to a stud plate located behind the
bulkhead. A link arm is attached to each wheel box by a short link and secured with circlips. The link arm has an
attachment hole centrally located along its length for the electric motor drive link.
The electric motor is mounted in a recess in the bulkhead below a sealed cover plate. The drive spindle of the motor
protrudes through the cover plate and is fitted with a link. The link is attached to a tapered spline on the motor spindle
and is secured with a lock washer and nut. The opposite end of the link is attached to the central attachment point on
the link arm and secured with a circlip.
Each wheel box has a taper splined shaft which allows for the attachment of the wiper arm which is secured with a
washer and nut. The shaft of each wheel box is passed through a rubber sealed aperture in the plenum. The wiper
arm attachment to the splined shaft has a pivot to which the remainder of the arm is attached. The two parts of the
arm are connected by a spring which controls the pressure of the blade on the screen to a predetermined amount.