1998 JAGUAR X308 ABS

Spin
the wheel by hand and check the meter display.
3
Doe

s the sensor generate a voltage?
Yes GO to E2
.
No

If the WSS ring is in good condition, install a new WSS.
REFER to: Rear Wheel Speed Sensor
(20
6-09 Anti-Lock Control, Removal and Installation).
E2

: CHECK THE WSS SIGNAL CIRCUIT CONTINUITY
Make sure the ignition is off. 1
Di

sconnect the ABS module connector, LF27.
2
Meas

ure the resistance between LF27
, pin 21 (U) and LA02, pin 01 (U).
3
I
s the resistance less than 5 ohms?
Yes GO to E3
.
No

Repair the high resistance circui t. This circuit includes intermediate connector, LA02. Refer to the
electrical guides. Clear the DTC, check for normal operation.
E3
: CHECK THE WSS RETURN CIRCUIT CONTINUITY
Meas

ure the resistance between LF27
, pin 22 (U) and LA02, pin 02 (U).
1
I
s the resistance less than 5 ohms?
Yes The WSS and circuits are OK. Check for DTCs indicating a possible module failure.
No Repair the high resistance circui t. This circuit includes intermediate connector, CA29. Refer to the
electrical guides. Clear the DTC, check for normal operation.
P
INPOINT TEST F : CONT
ROLLER AREA NETWORK (CAN) INTEGRITY TEST
TE
ST
CONDITIONS
D
ETAILS/RESULTS/ACTIONS
F

1: CHECK THE NETWORK INTEGRITY
FROM THE DIAGNOSTIC SOCKET
M
easure the resistance between pins 06 (Y) and 14 (G) of the diagnostic socket.
1
I

s the resistance 60 ohms?
Yes The CAN system is OK. Check for DTCs indicating a fault elsewhere.
No Check the CAN system for open an d short circuits. Refer to the electrical guides. Clear the DTC,
check for normal operation.

Anti-Lock Control - Anti-Lock Brake System (ABS) Module
Remo
val and Installation
Remov
a
l
• C
A
UTIONS:
Replacement of nuts and bolts: Various thread-locking de vices are used on nuts and bolts throughout the vehicle.
These devices restrict the number of times a nut or bolt can be used. See section 100-00 for information.
Remove brake fluid spilla ge immediately from paint work, with clean water.
Sp
ecial Tool(s)

Brake Pedal
H
old Tool
JDS 9013
1. Disc onne
ct battery ground cable (IMPORTANT, see operation
86.15.19 for further information).
2. Position vehicle on a four-post lift.
3. Open engine compartment and fit paint work protection covers
to fenders.

4. NOTE : Th
e following three pictorial procedures must be
carried-out to minimize brake fl uid loss when disconnecting the
brake tubes.
Open Left-Hand-Front and Left-H and-Rear caliper bleed nipples.
Connect a
bleed tube and co
ntainer to the calipers.
Op
en bleed nipples.

5. Depress and hold down brake pedal u s
ing special tool.
1. Position tool between brake pedal and seat frame.
2. Turn the tool wheel unti l the brake pedal is held
60mm down from its released position.
6. Tighten bleed nipples to:
Front caliper blee d nipple 4-6 Nm.

Rear
caliper bleed nip
ple 8-11 Nm.

Remove bleed tub
es and containers.

7. Disc
onnect electrical connectors from ABS/TCCM.
1. Pull plunger upwards.
2. Disconnect electrical connector.
3. Disconnect electrical connector
8. CAUTION: Remove brake flui d spillage immediately from
paint work, with clean water.
Position an absorbent cloth under neath the HCU to collect brake
fluid spillage.

9. NOTE
: To minimize brake fluid
loss, release the brake tubes
from the HCU in the order shown.
Release brake tubes from HCU.
1. Undo union nuts and re lease inlet brake tubes.
Install plugs to HCU inlet por
ts and brake tubes.
2. Undo union nuts and re lease outlet brake tubes.
Inst
all plugs to HCU outlet
ports and brake tubes.

10
.
Remove HCU from vehicle.
Re
move bolts.
T

aking care not to distort
brake tubes remove HCU.
11. Remove ABS/TCCM from the HCU.

In
stallation

Pla
ce the HCU on a work bench.
1. Disconnect electrical connector.
2. Remove bolts.
3. Remove ABS/TCCM.
12. Clean components and mating surfaces.

1. Install th e AB
S/TCCM to the HCU.
1. Install and tighten bolts.
2. Connect electrical connector.

2. Install HCU.
Takin g
care not to distort brake tubes position HCU into
bracket.
Install bolts and tighten to 8-1
0 Nm.

3. NOTE : To min
imize brake fluid lo
ss, install the brake tubes to
the HCU in the order shown.
Install brake tubes to HCU.
Re
move plugs from outlet HC
U ports and brake tubes.
1. Install and tighten outl et brake-tube union nuts.
Refer to Specification section 206-09 for torque
setting.
Re mo
ve plugs from inlet HC
U ports and brake tubes.
2. Install and tighten inlet brake-tube union nuts. Refer to Specification section 206-09 for torque setting.
4. Remove cloth from underneath HCU.
5. Connect electrical connectors to the ABS/TCCM.

Remove bleed tube
s and containers.

7. Disc onne
ct electrical connectors from ABS/TCCM.
1. Pull plunger upwards.
2. Disconnect electrical connector.
3. Disconnect electrical connector
8. CAUTION: Remove brake flui d spillage immediately from
paint work, with clean water.
Position an absorbent cloth under neath the HCU to collect brake
fluid spillage.

9. NOTE : To min
imize brake fluid loss, release the brake tubes
from the HCU in the order shown.
Release brake tubes from HCU.
1. Undo union nuts and re lease inlet brake tubes.
Install plugs to HCU inlet por t
s and brake tubes.
2. Undo union nuts and re lease outlet brake tubes.
Instal
l plugs to HCU outlet
ports and brake tubes.

10 . R
emove HCU from vehicle.
Re
mo
ve bolts.
T
a
king care not to distort
brake tubes remove HCU.
11. Remove ABS/TCCM from the HCU.

I
nstallation

Pl
ace the HCU on a work bench.
1. Disconnect electrical connector.
2. Remove bolts.
3. Remove ABS/TCCM.
12. Clean components and mating surfaces.

1. Install th
e ABS/TCCM to the HCU.
1. Install and tighten bolts.
2. Connect electrical connector.

2. Install HCU.
Takin
g care not to distort brake tubes position HCU into
bracket.
Install bolts an
d tighten to 8-10 Nm.

3. NOTE
: To minimize brake fluid lo
ss, install the brake tubes to
the HCU in the order shown.
Install brake tubes to HCU.
R
emove plugs from outlet HC
U ports and brake tubes.
1. Install and tighten outl et brake-tube union nuts.
Refer to Specification section 206-09 for torque
setting.
Re
move plugs from inlet HC
U ports and brake tubes.
2. Install and tighten inlet brake-tube union nuts. Refer to Specification section 206-09 for torque setting.
4. Remove cloth from underneath HCU.
5. Connect electrical connectors to the ABS/TCCM.

Anti-Lock Control - Wheel Speed Se
nsor Ring
Re
mo
val and Installation
Remov
a
l
CAUTI
O
N: Replacement of
nuts and bolts: Various thread-locking devices are used on nuts and bolts throughout the
vehicle. These devices restrict the number of times a nut or bolt can be used. See section 100-00 for information.
S p
ecial Tool(s)

Hub Holdin
g Tool
2
04-195 (JD 227)

ABS Rotor Nut Socket
2
06-
066A
1.
Op
en engine compartment and
fit paintwork protectors to
fenders.
2. Raise front of vehicle and support on stands. Refer to section
100-02.
3. Remove front wheel. Re fer to section 204-04.
4. Remove front brake disc. Refer to operation 70.10.12.
5. Remove vertical link and hub assembly. Refer to operation
60.25.38.90.

6. Re
move brake-disc shield from vertical link.
1. Remove screws.
2. Remove disc shield.
7. Using special tool, secure vertical link and hub assembly in a
vice.
Secure special tool
in a vice.
Posit
i
on hub in tool.
Fit and

tighten wheel nuts.

Power Steering - Power Steering
Description an
d Operation

Parts List
The power steering system is a rack and pinion design, with an engine-dri ve n pump providing the steering assistance. The
system features variable steering assistance with vehicle spee d, a variable ratio steering rack, and a hydraulic control valve
which has a torsion bar arrangement giving improved center feel to the steering.
Absolute cleanliness must be observed wh en replenishing the fluid or dismantling any part of the system. If any major
component is renewed a new fluid rese rvoir must be fitted. New fluid from a sealed container must be used.
It
em
Par
t Number
De
scription
1—Steeri

ng rack assembly
2—Power as

sisted steering pump
3—F

luid reservoir
4—F

luid cooler
5—Hoses and pipework
6—In-

line quick-fit connector