JAGUAR X308 1998 2.G Workshop Manual

E
lectronic Engine Controls - Engine
Control Module (ECM) Adaptation
Gen
eral Procedures
When to car

ry out adaptations
DTCs P1000/P1111 Conditions for adaptation
Fuelling Adaptations Drive Cycle
•
NOTE: Make sure the engine is at normal operating
temperature. (75°C, 167°F) 1.
Whenever the battery is disconnected, the Engine Control
Module (ECM) adaptations are reset to a "green" ECM
condition. In this condition, certain functions of the ECM are
inhibited, and the ECM must "r elearn" these functions. To
enable the ECM to do this, the vehicle will have to perform
some maneuvres which it may, or may not, do during a normal
road test. The routine in this pr ocedure should be carried out at
Pre-Delivery Inspection, and after any emissions related
rectification work involving the disconnection of the battery.
2. When the DTCs relating to a rectified concern are cleared,
P1000 (system checks not complete since last memory clear)
will be flagged. This DTC does no t indicate a failure, just that
diagnostic drive cycles need to be performed. The vehicle's on-
board diagnostic system will confirm that all the diagnostic
drive cycles are complete by flagging P1111, (system checks
complete since last memory clear)
1. Make sure these conditions are checked and corrected, if
necessary, before carrying ou t the adaptation procedure.
MechanicalElectrical
Engi
ne oil level correct
Coo

lant level correct
F

uel level greater than
30%, less than 80%
F
uel filler cap correctly
fitted/secure, seal in good condition
Al
l rectification work
relating to DTCs completed
F
uel, ignition and cooling
systems in good order
Al
l Diagnostic Trouble
Codes (DTCs) cleared
Al
l rectification work
relating to DTCs completed
F
uses
Harnes

ses
E

lectrical connectors

1.
Either
the Jaguar approved diagnostic system (where
available), or a scan tool should be connected to measure the
Mass Air Flow rate. Most generi c scan tools should be capable
of reading this parameter.
Depending on road conditions and dealer location, it may be
difficult to achieve the road sp eeds necessary to reach the air
flow indicated. It is possible to reach these air flow figures by
inducing a load on the vehicle, (making use of hills, using a
lower gear ratio, etc) or, if no alternative is possible, by
restraining the vehicle and re aching the air flow figure
Si
te
Mass Air Flow
(gra
ms/second)
D
riving Conditions
1Up t

o 7 g/s
Idle
in
P for 2 minutes
21
0 to 14 g/s
O
pen throttle in
P for 2 minutes
31
8 to 22 g/s
O
pen throttle in
P or D with
guidance * for 2 minutes
42
5 to 30 g/s
D
rive with guidance * for 2
minutes

Diagnostic Monitor Comp
letion
stat
ionery in
D.
WARNING: This should not be attempted without the vehicle
being in a safe area and suitably chocked. Failure to follow this
instruction may result in personal injury.
Without using the Jaguar approved diagnostic system or a scan
tool with system readiness capability, it will not be possible to
confirm when the adaptations are complete, unless P1111,
(system checks complete since last memory clear) is flagged. If
such equipment is not available, ALL the diagnostic monitors
will have to run to enable DTC P1111 to be flagged. In some US
states, this code is a requirem ent for annual emissions tests.
1. The dri v
e cycles detailed here w
ill enable the monitors to run,
but only after fuelling adaptations are complete.
Entry C
onditions
Di
agno
stic
Engine

S p
eed
Ve
h
icle
Speed
Mass Air Flow
(gra ms/sec
ond)
Ti
m
e to
Completion
Catalyst Monitor1 100
to

1600 rpm
50 to
72

kph (31 to 45
mph)
5 to
30 g/s
23
se
conds
HO2S6
00 t
o
2500 rpm
29 to

113 kph
(18 to 70
mph)
4 to
16 g/s
F
u
el cut for
more than 10 seconds, but less than 30 seconds *
Catalyst Monitor SensorN/ AN/A10
to 90 g/s
14
0
seconds
F
u
el System
N/
AN/AMore than 6 g/s33 se
conds
AACVN/
A61 to

121 kph
(38 to 75
mph)
4 to
16 g/s
F
u
el cut for 2
seconds *
P /
N switch
1
800
to

2200 rpm
80 to

101 kph
(50 to 63
mph)
N/ A31 se
conds
Evaporative

em is
sions
N/
A48 to
89

kph (30 to 55
mph)
and idle
R e
fer to drive
cycles for leak
tests in this section
Re
fer to drive
cycles for leak
tests in this section
2. During the drive cycle, drive gent ly, avoiding hard acceleration,
braking or cornering and rough roads.
1. Drive at 84 to 97 kph (52 to 60 mph) for 40 seconds.
2. Accelerate to 113 kph (70 mph).
3. Close the throttle, (ideally at the start of a descent)
continue with closed throttle for 10 seconds. (* Fuel
cut)
4. Drive at 56 to 64 kph (35 to 40 mph), holding the throttle as steady as possib le, on a flat level road for
30 seconds minimum.

Drive Cycle for 40 thou leak test
Drive Cycle for 20 thou leak test (2001 my on only)
1. Make sure the "conditions
for ad
aptation" detailed at the start
of this section are met.
1. Avoiding high engine load s, drive the vehicle steadily
between 48 and 89 kph (30 and 55 mph) for 15 to 20
minutes after starting the engine. (Depending on the
amount of fuel vapor gene rated, the test may take
longer than this).
2. Where possible, avoid body roll to minimise fuel movement.
3. If the scan tool being used is able to read TIDs, check
TID 08 in mode 6. If the test has not completed, this
TID will display "0". Any other value indicates that
the test has successfully completed.
4. If the test has not completed, the drive cycle must be repeated.
5. If the scan tool being used is not able to read TIDs, the only way to confirm that the test has run is to
check for P1111 after running the 20 thou test, where
applicable.
1. This test needs to be completed within 50 minutes of starting
the engine from cold. It should be run following the 40 thou
test.
1. Continue driving the vehi cle steadily between 48 and
89 kph, (30 and 55 mph) avoiding high engine loads
for a further 15 minutes.
2. Avoiding excessive fuel movement, bring the vehicle to rest.
3. Allow to idle for two minutes.
4. Provided the vapor conditions are suitable, the test will complete.
5. If the scan tool being used is able to read TIDs, check
TID 06 in mode 6. If the test has not completed, this
TID will display "0". Any other value indicates that
the test has successfully completed.
6. If the test has not completed, the drive cycle must be repeated.
7. Check for DTCs. P1111 will be flagged if all monitors have run.
8. Leak check drive cycles will only normally be necessary if an Evaporative Emissions related DTC is
flagged.
9. Unless P1111 is required for the State inspection, fuelling adaptations will normally be all that is
required for the vehicle to adapt itself and complete

di
agnos
tic drive cycles in the
course of it's normal use.

E
lectronic Engine Controls - Engine Control Module (ECM)
Re
moval and Installation
Remov

al
Installation

1.
Disc
onnect battery ground cable (IMPORTANT, see SRO
86.15.19 for further information).

2. R
emove ECM housing cover.
3. RHD only: Remove security bracket securing screws.
R
emove bracket.
4. Disconnect electrical connectors.

5. Li
ft ECM from housing.
6. RHD only: Remove security bracket securing screws.
R
emove brackets.
1. NOTE: A replacement ECM may only be obtained from an
authorised Jaguar dealer and MU ST be ordered against the VIN.
• NOTE: Check condition of ho using seals and replace as
necessary.
Installation is a reversal of the removal procedure.
2. Synchronize ECM, KTM and BPM using PDU.
3. Complete engine set- up using JDS/PDU.

El
ectronic Engine Controls - En
gine Coolant Temperature (ECT)
Sensor4.0L NA V8 - AJ 27/3.2L NA V8 - AJ26
Remo
val and Installation
Remova

l
Installation
1. Op
en the engine compartment and fit paintwork protection
sheets.

2. Re
move the engine covers.

3. WA
RNING: ENSURE THAT THE ENGINE IS COLD BEFORE
COMMENCING WORK.
Slacken the coolant reservoir ca p to relieve coolant pressure
and re-tighten.

4. Remove t
he engine coolant temperature sensor.
1. Disconnect the harness plug from the sensor.
2. Remove the sensor and sealing washer.
1. Fitting is the reverse of the removal procedure, noting that a
new sealing washer should be us ed and tighten the sensor as
specified

2.
Check and adjust the cool ant
level as required.

El
ectronic Engine Controls - En
gine Coolant Temperature (ECT)
Sensor4.0L SC V8 - AJ26
Re mo
val and Installation
Remova

l
Installation

1.
Op
en the engine compartment and fit paintwork protection
sheets.

2. WA
RNING: ENSURE THAT THE ENGINE IS COLD BEFORE
COMMENCING WORK.
Slacken the coolant reservoir ca p to relieve coolant pressure
and re-tighten.

3. Remove t
he engine coolant temperature sensor.
1. Disconnect the harness plug from the sensor.
2. Remove the sensor and sealing washer.

1. Fi
tting is the reverse of the removal procedure, noting that a
new sealing washer should be us ed and tighten the sensor as
specified
2. Check and adjust the cool ant level as required.

Electron
ic Engine Controls -
Heated Oxygen Sensor (HO2S) LH
Rem
oval and Installation
General Equipment
Remov
al
Installation


Snap
-on tool S6176
1. WARNING: ENSURE THAT TH E EXHAUST AND CATALYST
ARE COLD BEFORE COMMENCING WORK
Disconnect the battery ground lead.

2.

CAUTION: Make sure the wiring harness is not twisted or
damaged on removal. Failure to follow this instruction may result in
damage to the vehicle.
From inside the engine compartm ent, release the relevant sensor
(s) multiplug from its mounting bracket and disconnect the plug.
3.

To gain access to the sensor(s) the front muffler assembly must
be displaced for clearance; refer to 30.10.18.

4.

CAUTION: Make sure the wiring harness is not twisted or
damaged on removal. Failure to follow this instruction may result in
damage to the vehicle.
• NOTE: Right-hand shown, left-hand similar.
Using the Snap-on tool S6176, remove the sensor.
1.

Fitting is the reverse of the remo val procedure, noting that a new
sealing washer should be used.

2.

CAUTION: Make sure the wiring harness is not twisted or
damaged on installation. Failure to follow this instruction may result
in damage to the vehicle.
• NOTE: Right-hand shown, left-hand similar.
Tighten the sensor to specification.
3.

Make good the exhaust seals.

Electronic
Engine Controls -
Heated Oxygen Sensor (HO2S) RH
Remo
val and Installation
General Equipment
Remov a
l
Installation


Snap -on to
ol S6176
1. WARNING: ENSURE THAT TH E EXHAUST AND CATALYST
ARE COLD BEFORE COMMENCING WORK
Disconnect the battery ground lead.

2. CAU
TION: Make sure the wiring harness is not twisted or
damaged on removal. Failure to follow this instruction may result in
damage to the vehicle.
• NOTE: Left-hand shown, right-hand similar.
From inside the engine compartm ent, release the relevant sensor
(s) multiplug from its mounting bracket and disconnect the plug.
3. To
gain access to the sensor(s)
the front muffler assembly must
be displaced for clearance; refer to 30.10.18.

4. CAU
TION: Make sure the wiring harness is not twisted or
damaged on removal. Failure to follow this instruction may result in
damage to the vehicle.
Using the Snap-on tool S6176, remove the sensor.
1. Fittin
g is the reverse of the remo
val procedure, noting that a new
sealing washer should be used.

2. CAU
TION: Make sure the wiring harness is not twisted or
damaged on installation. Failure to follow this instruction may result
in damage to the vehicle.
Tighten the sensor to specification.
3. M
ake good the exhaust seals.