instrument panel JAGUAR X308 1998 2.G Workshop Manual

                    Ambient Air Temperature  Sensor  (82.20. 02) 
                     Cold Ai
r
 Bypass  Blend  Door  Actuator  (82.20.86)  
                     Defrost Vent/Register  Blend  Door  Actuator  (82.20.84)  
                     Footwell Vent/Duct  Blend  Door Actuator  (80.20.20  or  82.20.85)  
                     Instrument  Panel  Blend Door  Actuator  (82.20.83)  
                     Remote Climate Control  Module  LHD (82.20.65)  
                     Remote Climate Control  Module  RHD (82.20.65)  
 
        413:  Instrumentation  and Warning  Sy
stems  
 
             413‐00:  Instrument  Cluster  and  Panel  Illumination  
                 Description  and  Operation  
                     Instrument  Cluster  and Panel  Illumination  
                 Removal and  Installation  
                     Instrument  Panel  Dimmer  Switch  (86.65.07)  
 
             413‐01:  Instrument  Cluster  
                 Description  and  Operation  
                     Instrument  Cluster  
                 Diagnosis  and  Testing  
                     Instrument  Cluster  
                 Removal and  Installation  
                     Instrument  Clust
er (88.20.01)  
 
             413‐06:  Horn  
                 Description  and  Operation  
                     Horn 
                 Diagnosis  and  Testing  
                     Horn 
 
             413‐07:  Clock  
                 Description  and  Operation  
                     Clock 
                 Diagnosis  and  Testing  
                     Clock 
                 Removal and  Installation  
                     Clock (88.15.07)  

                    Front Doo r
 
Window  Regulator  and  Motor  (76.31.45)  
                     Front Door  Window  Regulator  Motor  (76.31.45)  
                     Front Door  Window  Control  Switch  (86.25.07)  
                     Rear Door  Window  Glass  (76.31.02)  
                     Rear Door  Window  Glass  Weatherstrip  (76.40.29)  
                     Rear Door  Window  Regulator  and  Motor  (86.25.09)  
                     Rear Door  Window  Regulator  Motor  (86.25.09)  
                     Rear Door  Window  Control  Swi
tch (86.25.10)  
                     Rear Quarter  Window  Glass  (76.31.31)  
                     Rear Window  Glass  (76.81.11)  
                     Windshield  Glass  (76.81.40)  
 
             501‐12:  Instrument  Panel  and  Console  
                 Specification  
                 Description  and  Operation  
                     Instrument  Panel  and Instrument  Panel  Console  
                 Removal and  Installation  
                     Audio Unit  Housing  (76.25.15)  
                     Climate Control Assembly  Housing 
                     Coin Stowage  Compartment (76.46.37)  
                     Floor Co
nsole  (76.25.01)  
                     Floor Console  Ashtray  (76.25.25)  
                     Floor Console  Extension  (76.25.05)  
                     Floor Console  Finish  Panel  (76.47.26)  
                     Floor Console  Finish  Panel  Bracket  (76.25.26)  
                     Floor Console  Stowage  Compartment  (76.25.16) 
                     Floor Console  Stowage  Compartment  Lid (76.25.18)  
                     Glove Compartment  (76.52.03) 
                     Glove Compartment  Lid (76.52.02)  
                     Glove Compartment  Lid Damper  (76.52.22)  
                     Glove Co
mpartment  Liner  (76.52.21)  
                     Instrument  Cluster  Finish Panel  (76.47.24)  
                     Instrument  Cluster  Finish Panel  Bezel  (88.20.33)  
                     Instrument  Panel  (76.46.01)  
                     Instrument  Panel  Finish Panel  (76.47.06)  
                     Instrument  Panel  Lower  Trim  Panel  (76.46.11)  
                     Overhead Console  (76.13.69)  

It is a reciprocating two
-circuit pu
mp in which one brake circuit is as signed to each pump circuit.
It supplies th
e fluid pressure and vo
lume to supply the brake circuits under ABS and Traction control.
The pump is driven by an electri
c motor, with the pump
housing incorporating two lo w pressure accumulators and
damping chambers for each brake circuit.
The ac cu
mulator stores the pressure and smooths out the output pu
lses from the pump.
ABS Warning Lamp
The sys
tem will be set in a fail-safe mode if a problem is de
tected; a warning lamp on the instrument panel will notify the
driver there is a problem.
Anti-Lock Braking Sy
stem (ABS)
The AB
S components are combined with
an hydraulic booster and a tandem master cylinder to provide a two circuit braking
system. The system comprises, four wheel speed sensor s, a brake control modulator and an ABS warning lamp.
Should a wheel start to lock-up during braking a signal tr ansmitted from the wheel speed sensor to the brake control
modulator will start the hydraulic pump. The brake control modula tor will close the input valve of the line connected to the
locked-wheel to stop any increase in fluid pressure to the br ake caliper. If this fails to prevent the wheel locking, the
pressure in the caliper will be decreased by opening the return valve until th e wheel starts accelerating again. The fluid
pressure from the return va lve is directed into the low pressure accumulator, housed in the pump.
From the low pressure accumulator, fl uid is pumped through the damping cham ber to the brake master cylinder. The
pressure to the brake caliper will then be increased in small steps to maintain maximum adhesion between the tire and road
surface. This is achieved by closing the return valve, and opening the input valve and using the hydraulic pump to increase
the pressure.
Although the system senses all four wheels independently, the rear wheels are regulated as a pair. If a sensor on a rear
wheel detects a wheel decelerating rapidly, then the fluid pressure to both wheels is reduced. The fluid pressure is then
dictated by the wheel having the lowe st adhesion with the road surface.
The ABS system will be set in a fail-safe mode if a problem is detected; a warn ing lamp on the instrument panel will notify
the driver there is a problem. The brake system will still operate conventionally and with the same standard of performance
as a vehicle not equipped with ABS.
Automa tic Stability Control (ASC)

Th
e ASC utilizes the ABS sensing arrangement to provide the maximum traction force to propel the vehicle.
The ASC is switched on when the engine is started. The system can be switched off by pressing the 'ASC OFF' (the switched
is marked 'TRAC OFF' on vehicles fitted with traction control). The switch, which is situated in the center console switchpack,
lights up to warn that the system is sw itched off. An 'ASC' amber warning light flashes on the instrument panel when the
system detects a spinning wheel.
The ASC system uses engine intervention to reduce the torque delivered to the drive wheels to prevent them spinning.
Engine torque is re duced in three ways:
The
throttle is moved towards the closed position.
The ignition is retarded. F
u
el is cut-off at the cylinder injectors.
Wheel spin is detected by the wheel sp eed sensors and communicated to the AB S/TCCM. The ABS/TCCM uses information
from the controller area network (CAN) to calculate the torque that the engine should produce to stop the wheel spinning.
Torque reductions are then requested from the engine control module (ECM ) through the CAN. The throttle is then
positioned to provide the target torque, which has been calculated to prevent wheel spin. During the transient phase of
torque reduction the fuel is cut-off and th e ignition retarded Both the fuel cut-off an d ignition retard will be restored to
normal when the throttle is set to its new position.
The ASC uses a brake control modulator with six solenoid va lves: three normally open inlet valves and three normally

clos
ed outlet valves.
Traction Control
Trac

tion control has the same capabilities as ASC but with th
e added ability to actuate the brakes of the spinning wheel.
This enhances ASC by improving acceleration particularly on surfaces with uneven friction , e.g. one wheel on ice the other
on tarmac.
When wheelspin occurs, brake line pressure to the slipping wheel is generated, to operate that wheel's brake. The BCM
achieves this by closing the cut-off solenoid valve and oper ating the hydraulic pump. Brake fluid is then drawn from the
reservoir through the non-actuated mast er cylinder to the brake caliper.
A 'TRAC' amber warning light flashes on the instrument panel when the system detects a spinning wheel.
The traction control system uses a brake control modulator with nine solenoid valv es: four normally open inlet valves and
four normally closed outlet valves and one special isolating va lve. The outlet valves control the brakes of each each rear
wheel individually on the traction control system.
Rear Wheel Speed Senso
rs and ABS/TCCM Circuit Diagram

Ai
r Distribution Box (ADB)

The upper air distribution box ADB, is fixed to the defog duct and instrument panel assembly, and seals by contact pressure
to the outlet (top) of the air conditioning unit. The ADB inco rporates two servo motor operated flaps which regulate airflow
to:
Windshield and door drop
glass
Instrument panel

- center, left
hand and right hand vents
The center vent duct incorporat es a baffle plate which balances the volume of air flow between the center and right and left
hand vents.
5R
ear intermediate footwell duct - RH
6R

ear footwell duct - RH
7R

ear face duct - RH
8R

ear face duct - LH
9R

ear footwell duct - LH
10R

ear intermediate footwell duct - LH
11D

river footwell duct - LHD
12Fac

e level duct -

LH
It
em
De
scription
1Ai

r outlet - side vent
2Servo motor -

instrume
nt panel center vent
3Servo motor -
defog vent
4Ai

r outlet - instrume
nt panel center vent
5Ai
r outlet - defog vent


It
em
De
scription
1Fac

e level duct - RH
2Passenger footwel

l duct - LHD
3Fac

e level duct - center
4Rear

face primary duct

I n
strument Pane
l Air Outlets

Ite
m
De
scr
iption
1Ai
r i
nlet - from RH blower (LH opposite, not shown)
2Ai
r outl
et - instrument
panel center vents
3Air ou
tlet - defog
4Ai
r outl
et - instru
ment panel LH and RH side vents
5Air outl
et - footwell
6Flap -
cool air
bypass
7Evaporator
8Matrix -

heater

Internal Components and Ai
r Fl
ow

Ai
r temperature from the center, right and left
hand vents is slightly cooler than the foot outlets; however this temperature
cannot be varied independently.
The instrument panel side vents, not shown, feature similar controls.


1Ai
r flow control
2Air di

rection control



It
em
De
scription

Air Distribution and Filtering - Passenger Side Blower Motor
Removal and Installation
Removal
1. Remove instrument panel; refer to 76.46.01.

2. Remove passenger footwell duct.
Remove nut.

3. Disconnect harness connector from blower assembly.
1. Detach connector from mounting.
2. Disconnect connector.
3. Discard cable ties.

4. Remove fasteners securing duct to heater / cooler unit.
Remove screws.

5. Remove duct connecting blower to heater / cooler unit.
Remove screws.
Remove duct.
6. Remove blower assembly.

Air Distribution and Filtering - Plenum Chamber
Removal and Installation
Removal
Installation

1.
Remove instrument panel for access; refer to 76.46.01.

2. Remove rear face primary duct.
Remove fasteners.
Remove duct.

3. Remove right and left hand ai r distribution box ducts from
instrument panel.
Remove screws.
Remove ducts.

4. Remove air distribution bo x from instrument panel.
Remove nuts.
Position air distribution box for access to connector.
Disconnect connector.
Remove air distribution box.
5. Remove center vent servo motor; refer to 82.20.83.
6. Remove defog vent servo motor; refer to 82.20.84.
1. Installation is a reversal of the removal procedure.

Heating and Ventilation - Heater Core
Removal and Installation
Removal
Installation

1.
Drain radiator coolant only; re fer to 26.10.01 or (SC) 26.10.01.
2. Remove instrument panel for access; refer to 76.46.01.

3. Remove driver footwell duct.
Remove screw.
Remove duct.

4. Disconnect cool air bypass serv o motor connector and heater
matrix pipes.
1. Disconnect connector.
• NOTE: Position suitable clot h to absorb coolant leakage
before disconnecting pipes.
2. Remove screws and retaining brackets.
3. Remove screws and matrix clamps.
• NOTE: Discard O-ring seals from pipes; fit suitable
blanking plugs.
Detach pipes from matrix.

5. Remove heater matrix from heater/cooler assembly.
1. Remove screw.
2. Remove retaining plate.
Reposition instrument panel support bracket to permit
removal of heater matrix (RHD only).
3. Remove heater matrix.
1. NOTE: Lubricate and install new O-ring seals.
Installation is the reverse of removal procedure.