1994 JAGUAR XJ6 instrument panel

GLOSSARY Of
Term(s) Abbreviation Definition Previously used (if applicable) term(s) (or Eng- lish Eauivalent)
U
undercoating
unitized construction
Unit Service Manual
V
valve
valve lifter
vapor Vehicle Condition Monitor
Vehicle Emission Control
Information Label
Vehicle Service Manual
Vehicle Speed Sensor
Vehicle Identification Number
Viscositv Index
volatile
Voltage Regulator VCM
VECl Label
VSM
vss
VI N
VI
VR Service
Manual which pertains
to a major
'unit' (e.g. transmission, engine) fitted to a
Jaguar vehicle (see also Vehicle Service
Manual and Electrical Diagnostic Manual)
a device
by which the flow of liquid, gas,
vacuum or loose materials may be started,
stopped or regulated by a movable part
which opens, shuts or partially obstructs one
or more passageways or ports.
A 'Valve' is
also the movable part of such a device
in an OHC engine, the plunger fitted between
valve stem and cam lobe
instrument panel display which warns of
faults
Service Manual which pertains to a specific
family of Jaguar vehicles (see
also Unit
Service Manual and Electrical Diagnostic
Manual).
sensor which provides vehicle speed
information
number assigned to the vehicle
by the
manufacturer, primarily
for licensing and
identification purposes
(1) vaporizing at room temperature (liquid) (2) not permanent (memory)
device which regulates the variable output
voltaae of a aenerator underseal
unitary
construc
-
tion
tappet, bucket
vapour
road speed sen
- sor
Issue 1 August 1994 27 X300 VSM

12.1 ANTI-LOCK BRAKING SYSTEM (ASS), GENERAL DESCRIPTION
The anti-lock braking system (ABS) components are combined with a hydraulic booster and tandem master cylinder (TMC) to provide a two-circuit braking system. The anti-lock braking system comprises the following components:
0 Four inductive wheel speed sensors, hub end mounted
0 ABS warning light
0 Hydraulic module.
The hydraulic module consists of an electric motor driven pump,
two low pressure accumulators, valve block and an
ABS electronic control module.
m: Electronic control modules for vehicles without traction control are designated ABS CM. Control modules for
vehicles with traction control are designated ABS /TC CM.
The valve block houses solenoid operated valves which are activated by voltage signals from the control module. The
signals are generated using wheel speed information received from the wheel speed sensors.
For vehicles without traction control the valves operate on three circuits, two front and one rear, as necessary to pre
- vent wheel locking during braking. Brake pressure is modulated individually at thefront wheels and collectively at the
rear. Rear wheel control operates on a 'select low' principle i.e. locking in either wheel is sensed, and controlled brake
pressure is applied to both wheels.
For vehicles with traction control the valves operate on four circuits. During ABS control the rear wheel are controlled
on a 'select low' principle (as above), but during traction control operation the rear wheels are controlled individually.
0
1yQfB: Functional and diagnostic information for the ABS CM and the ABS/TC CM is contained in the Electrical Diag-
nostic Manual (EDM), Section 12.
ABS Warning lamp / Traction Control Warning lamp /Fluid level Indicator
The ABS and traction control warning lamps, mounted in the instrument panel, indicate a fault in the ABS or traction
control. These systems are inhibited or disabled when the lamps are lit, although conventional braking is unaffected.
When the ignition is switched on, an ABS self test is initiated. During this test, the ABS and traction control warning
lamps are
lit for approximately 1.7 seconds and then extinguish. A fault is indicated if the warning lamps remain lit or
come on whilst the vehicle is being driven.
W: The ABS self test is masked by the 5 second lamp test initiated when the ignition is switched on.
The fluid level indicator lamp, mounted in the instrument panel, is
lit when the brake fluid falls below the minimum
mark on the brake fluid reservoir.
ABS / Traction Control - Inhibit / Disable
Faults conditions are detected by the ABS/TC CM which disables the ABS and traction control until the fault is rectified.
The ABS and traction control warning lights on the instrument pack remains lit whilst a fault exists. The system will
be disabled when the following conditions occur:
0
0 Valve failure
0 Sensor failure
0 Main driver failure (internal ABS /TC CM fault)
0 Redundancy error (internal ABS JTC CM fault)
0 Overvoltage J undervoltage
0 Pump motor failure.
0 Throttle valve actuator motor failure (traction control vehicles only).
0 Throttle valve actuator potentiometer failure (traction control warning light only).
X300 VSM 1 Issue 1 August 1994

Brakes (e#
12.1.7. Parking Brake
J70 293
W
1. Parking brake lever 2. Front cable 3. Relay lever 4. Driveshaft securing bracket 5. Intermediate cable 6. Cable equalizer
7. In-line cable connector 8. Rear cable RH 9. Rear cable LH
10. Parking brake switch and harness 11. Parking brake warning lamp
Fig.
1 Parking Brake Layout
All vehicles are fitted with identical parking brake systems.
When the parking brake lever
is operated, the cable system applies equal force to both RH and LH brakeshoe expander
assemblies. The brake shoes expand and press against the hub assembly, locking the rear wheels.
The handbrake lever, ratchet assembly and warning
light switch (item 1) are mounted on the transmission tunnel by means of threeflanged screws a blanking plate and gasket. The front cable (item 2) is connected to the relay lever (item 3) which is mounted on the driveshaft securing bracket (item 4). The relay lever operates the intermediate cable (item 5) which incorporates an adjusting screw to allow cable tension to be adjusted. The intermediate cable operates the
equalizer which ensures that equal force is applied to RH and LH parking brakesvia rearcable RH (item 8) and rear cable
LH (item 9). The rear cables are adjustable to allow cable tension to be adjusted.
The park brake switch (item 10) latches when the lever
is operated and lights the parking brake warning light (item 11 mounted in the instrument panel.
X300 VSM Issue 1 August 1994

1. SERVICE TOOLS & EQUIPMENT
Illustration Jaguar Number Description Notes
not illustrated JD 188 Underscuttle pad securing SRO 76.46.1 1/90 and
not illustrated JD
202 Fascia center vent removal SRO 76.46.06
clip removal tool SRO 76.46.15190
tool
11. TORO U€ TIGHTEN1 NG SPEC1 FlCA TlONS
Fixing Tightening Torque (Nm) 1
Fascia I I
Instrument pack to support panel I 1.8 I
Fascia to support bracket
Fascia to console
3
Tunnel bracket to body
22 - 28
22
- 28
Bolster to tunnel bracket 1.5
Instrument pack to fascia
3.0
Strut to fascia 2.0
Fascia support strut to body 7 - 10
CPU bracket to fascia 5
-7
Fascia demister bracket to fascia
1.5
1 .o
1 .o
5-7
5
-7
Fascia
and air con. location to body
Air dist. box duct to air dist. box
Airbag carrier mounting bracket to fascia
Instrument pack support bracket to fascia
Airbag bracket to fascia
2.0
Air dist. box to fascia 2.0
Inst. pack support bracket to fascia 5-7
22 - 28 Fascia assembly to body
Airbag door brackets to fascia 5-7
4.0
4.0
Airbag door bracket to fascia and strut
Airbag door bracket to door frame assembly
Hood
Hood lock to body
Hood buffer assembly 7
-10
Gas strut - ball pin to weld nut
7 - 10
7
- 10
Hood lever 5
-7
Clamp
- hood adjust cable 6-8
Interior
Sun Visor fixings 1.8
Sunblind to parcel shelf
Sunblind bezel assembly
1 .o
Coat hook 3.0
Tighten to prevailing torque

~~ Body Components & Trim
e 13.3.18 Fascia 6oard - Remove
For Access And Refit
SRO 76.46.01/90
. Remove the battery cover. Disconnect the battery.
Remove the drivers side and passenger side underscuttle
. Remove the drivers airbag module, see section 15.5.
. Remove the steering wheel, section 10.
9 Remove the drivers side fascia closing panel, see sub-sec-
. Remove the passenger side fascia closing panel, see sub-
. Remove the fascia center veneer panel, see subsection
. Undo and remove the fascia tie bar securing nuts.
. Displace the tie bars.
. Undo and remove the instrument housing /fascia switch-
. Reposition the multi-plug mounting bracket.
. Disconnect the steering column control module multi-
. Disconnect the fascia switchpack harness multi-plugs.
. Displace and reposition the instrument pack for access.
. Disconnect the instrument pack harness multi-plugs.
. Remove the instrument pack / fascia switchpack assem-
. Disconnect the right hand fascia harness to cabin harness
. Disconnect the column switchgear and column motors
Disconnect the ignition switch harness multi-plug.
. Disconnect the exciter coil harness multi-plug.
. Disconnect the speaker tweeter harness multi-plug.
. Disconnect the speed control control module harness
. Undo and remove the fascia to center console securing
. Displace and remove the passenger side outlet duct.
. Disconnect the fascia harness to console harness multi-
9 Disconnect the let3 hand fascia harness to cabin harness
. Undo and remove the fascia ground eyelets to bodysecur-
. Displace and reposition the ground eyeletsfrom the stud.
. Displace and reposition the airbag control module from
Undo and remove the fascia assembly lower securing nut.
. Undo and remove the fascia outer body bracket to fascia
Carefully displace the fascia rearwards.
pads, see
sub
-sections 13.3.19 and 13.3.20.
tion 13.3.22.
section 13.3.21.
13.2.23.
pack securing screws.
0 plugs.
bly.
multi
-plug.
harness multi
-plug.
multi
-plug.
screws.
0 plugs.
multi
-plug.
ing nut.
the mounting bracket.
securing bolts.
m
0
X300 VSM Issue 1 August 1994 24

Body Components & Trim -
. From behind the fascia passenger side, disconnect the
passenger airbag harness multi-plug.
. With assistance, remove the fascia from the vehicle and
place on a suitably protected bench.
Place the fascia
in position in the vehicle with the center
location peg correctly engaged.
Reconnect the passenger airbag module harness multi-
Plug.
. Carefully fit and align the fascia to the mounting position.
. Fit and tighten the fascia to outer body brackets securing
bolts.
Fit and tighten the fascia assembly lower securing nut.
Reposition and
fit the airbag control module to the mount-
ing bracket.
Reposition and fit the fascia harness ground eyelets to the
ground stud.
Fit and tighten the ground eyelet securing
nut.
harness multi-plug. . Reconnect the left hand fascia harness to cabin housing
. Reconnect the fascia harness to console harness multi- plugs.
Fit and align the passenger side outlet duct.
. Fit and tighten the fascia to console securing screws.
. Reconnect the speed control harness multi-plug.
. Reconnect the speaker tweeter harness multi-plug.
. Reconnect the exciter coil harness multi-plug.
Reconnect the column switchgear and column motor har-
. Reconnect the right hand fascia harness to cabin harness
. Place the instrument pack / fascia switchpack in position.
. Reconnect the instrument pack harness multi-plugs.
. Reposition and fitthe instrument packassemblytothefas-
cia.
Reconnect the fascia switchpack harness multi-plugs.
Reconnect the steering column harness multi
-plugs.
. Reposition and fit the switchpack harness multi-plug mounting bracket.
ness
multi
-plugs.
multi-plug.
. Fit and tighten the instrument pack/ switchpack securing
bolts.
- Fit and align the fascia tie bars.
. Fit and tighten the tie bar securing nuts.
9 Refit the center veneer panel.
Refit the fascia closing panels.
. Refit the steering wheel.
. Refit the drivers airbag module.
. Refit the underscuttle pads.
. Reconnect the battery and refit the battery covers.
Issue 1 August 1994 X300 VSM 25

Climate Control Systems
Manual Inputs
Automatic inputs
outputs
14.5 AIR CONDITIONING CONTROL MODULE (A/CCM)
14.5.1 Description
Theclimate control system peripheralscommunicate with theA/CCMvia three main devicecategories, plusthevehicle
power supply and ground connections.
Control panel Face Vent Temperature Control
Temperature and solar sensors
Flap
servo motor potentiometers
Circulation pump
& coolant flow valve
Power
transistor(fan speed control)
Compressor lock sensor
(12 cylinder only)
Instrument pack (coolant temp
& road speed) (engine revolutions via engine control module)
Blower motors (Left
& Right) & associated relays
Flap
servo motors
Heated front
/ rear screens & exterior mirror relays
Motorized in
-car aspirator
Compressor clutch request to engine control module (not
heater-only cars)
Circulation pump relay
Coolant flow valve
X300 VSM Issue 1 August 1994 7

Climate Control Systems
Action
Simultaneously hold AUTO and RECIRC - Switch
ignition to ON
Press AUTO
Press FACE
Simultaneously press FACE and HRW
Press
RECIRC (Press FAN to skip actuator check)
Press FAN
14.11 SYSTEM SE1 F-TEST
14.11. I Interrogation Procedure via the Control Panel
Result
Display element check
Any stored fault NUMERIC code
(If ZERO appears there are
no stored codes)
Scroll through stored faults (maximum of
5)
Clear stored fault codes (may need to be repeated for each
fault)
Initiate actuator check (Actuator codes
20 through 27*)
Exit error check mode
Fault Code
0
11
12
13
14
15
21
22
0
23
14.1 1.2 Control Panel Fault Code Key
Item Description
Normal Operation No
fault codes present, wait 30 seconds for system self-
check.
Motorized In
-car Aspirator Open /short in sensor circuit. Panel fault codes are not stored
for motorized in
-car aspirator motor failure.
Ambient Temperature Sensor Open
/ short circuits.
Evaporator Temperature Sensor Open
/ short circuits.
Water Temperature Input Instrument pack output.
Heater Matrix Temperature Sensor Open
/ short circuits.
Solar Sensor Open
/ short circuits.
Compressor Lock Signal
- 12 cylin- Open /short circuits. Low gas charge, low compressor oil,
der and supercharged
6 cylinder loose belt.
engines only.
Refrigerant Pressure Switch Open /short circuits. Low gas charge*
31
32
33
34
35
36 0
I 24 1 Face Vent Demand Potentiometer. 1 Open / short circuits
LH Fresh
/ Recirc. Potentiometer
RH Fresh / Recirc. Potentiometer
cool ~i~ by-pass potentiometer
Defrost Vent Potentiometer
Centre Vent Potentiometer
Foot Vent Potentiometer Open
/short circuit
in potentiometer. feed.
w: and log further faults. Cycling the ignition two or three times
after rectification of the fault will cure this.
In certain circumstances, the motor can over-travel
43
44
I Defrost Vent Motor
I Cool Air by-pass Motor
I 41 I LH Fresh / Recirc. Motor I
Check for short / open circuits in motor drive lines. Motor flap
sticking
/ jammed.
1 42 I RH Fresh / Recirc. Motor I
1 45 I Centre Vent Motor I
46 I Foot Vent Motor
w: In ambient temperatures below Oo C, the system may log fault code 23 because the low ambient causes a tem-
porary low gas pressure. Where the ambient temperature rise above 40" C, and if the engine is close to over- heating, feed to the compressor clutch may be cut and code 23 registered.*
X300 VSM 17 Issue 1 August 1994