engine JAGUAR X308 1998 2.G Workshop Manual

Is the res
istance greater than 5 ohms?
Yes GO to W10
.
No
GO to W11
.
W10 :
CHECK THE IAT SENSOR REFERENCE
GROUND CIRCUIT FOR HIGH RESISTANCE
Di
sconnect the ECM electrical connectors, EM10 and EM11.
1
Meas
ure t
he resistance between PI35,
pin 04 (BG) and EM10, pin 20 (BG).
2
Measure t
he resistance between PI35,
pin 04 (BG) and EM11, pin 12 (BG).
3
Is either resistance greater
than 5 ohms?
Yes REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. CLEAR the
DTC. TEST the system for normal operation.
No GO to W11
.
W11 :
CHECK THE SENSOR REFERENCE GROUND AT THE IAT SENSOR #2
Re
conn
ect the ECM electrical connectors, EM10 and EM11.
1
Di
sc
onnect the IAT sensor 2 electrical connector, PI03.
2
Meas
ure t
he resistance between PI03, pin 01 (BG) and GROUND.
3
Is th
e res
istance greater than 5 ohms?
Yes GO to W12
.
No
CHECK
for DTCs associated with TP sensor, APP/
mechanical guard sensor, FTP sensor, ECT sensor,
IAT sensor, or IAT sensor 2. INST ALL a new sensor as indicated by the DTC. CLEAR the DTC. TEST
the system for normal operation.
W12 :
CHECK THE IAT SENSOR #2 REFERENC
E GROUND CIRCUIT FOR HIGH RESISTANCE
Di
sconnect the ECM electrical connectors, EM10 and EM11.
1
Meas
ure t
he resistance between PI03,
pin 01 (BG) and EM10, pin 20 (BG).
2
Measure t
he resistance between PI03,
pin 01 (BG) and EM11, pin 12 (BG).
3
Is either resistance greater
than 5 ohms?
Yes REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. CLEAR the
DTC. TEST the system for normal operation.
No CHECK for DTCs associated with TPS, APP/mechanical guard sensor, FTP sensor, ECT sensor, IAT
sensor, or IAT sensor #2. INSTALL a new sensor as indicated by the DTC. CLEAR the DTC. TEST the
system for normal operation.
PINPO
INT TEST X : DTC P1245, P1246; ENGINE CRANK SIGNAL LOW/HIGH VOLTAGE
TE
S
T
CONDITIONS
D E
TAILS/RESULTS/ACTIONS
X
1
: CHECK THE STARTER RELAY SIGNAL CIRC
UIT FROM ECM AND BPM FOR SHORT TO B+
Re
move the starter relay.
1
Meas
ure t
he voltage between the
relay base, pin 02 and GROUND.
2
Is the volt
age greater than 3 volts?
Yes REPAIR the short circuit. For addi tional information, refer to the wiring diagrams. CLEAR the DTC.
TEST the system for normal operation.
No GO to X2
.
X2
: CHECK THE STARTER RELAY SIGNAL CIRCUI
T FROM ECM AND BPM FOR HIGH RESISTANCE
Di
sconnect the ECM electrical connector, EM11.
1
Disc
onne
ct the BPM electrical connector, FC15.
2
Meas
ure t
he resistance between EM11, pin 06
(GO) and the starter relay base, pin 02.
3
Measure t
he resistance between FC15, pin 73
(GO) and the starter relay base, pin 02.
4
Is either resistance greater
than 5 ohms?
Yes REPAIR the high resistance circui t. For additional information, refer to the wiring diagrams. CLEAR
the DTC. TEST the system for normal operation.
No INSTALL a new BPM. CLEAR the DTC. TEST the system for normal operation.

AA1: CHECK THE RA
DIATOR FAN MODULE TO ECM
'SERIES' DRIVE CIRCUIT FOR HIGH RESISTANCE
Disc
onnect the battery negative terminal.
1
D
i
sconnect the ECM electrical connector, EM13.
2
Disc
onne
ct the fan module electrical connector, LS31.
3
Meas
ure t
he resistance between EM13, pin 15 (W) and LS31, pin 09 (W).
4
Is th
e res
istance greater than 5 ohms?
Yes REPAIR the high resistance circui t. For additional information, refer to the wiring diagrams. CLEAR
the DTC. TEST the system for normal operation.
No GO to AA2
.
AA2: CHECK THE RA
DIATOR FAN MODULE TO ECM 'SER
IES' DRIVE CIRCUIT FOR SHORT TO HIGH VOLTAGE
Re
connect the battery negative terminal.
1
Turn the ignition swit

ch to the
ON position.
2
Measure t
he voltage between EM13, pin 15 (W) and GROUND.
3
Is the volt

age greater than 3 volts?
Yes REPAIR the short circuit. For addi tional information, refer to the wiring diagrams. CLEAR the DTC.
TEST the system for normal operation.
No GO to AA3
.
AA3: CHECK THE R A
DIATOR FAN MODULE TO ECM
'SERIES' DRIVE CIRCUIT FOR SHORT TO GROUND
Turn the ignition swit
ch to the
OFF position.
1
Meas ure t
he resistance between EM13, pin 15 (W) and GROUND.
2
Is
t
he resistance less than 10,000 ohms?
Yes
REPAIR the short circuit. For addi tional information, refer to the wiring diagrams. CLEAR the DTC.
TEST the system for normal operation.
No GO to AA4
.
AA4:
CHECK THE RADIATOR FAN MODULE IGNITION SUPPLY
Reconn

ect the ECM electrical connector, EM13.
1
Turn the ignition swit

ch to the
ON position.
2
Measure the voltage between LS 31,
pin 08 (WP) and GROUND.
3
Is the vol
t
age greater than 10 volts?
Yes INSTALL a new radiator fan module. REFER to Section 303
-03
A Engine Cooling
/
303-03B Supercharger Cooli
ng
. CLEA
R the DTC. TEST the sy stem f
or normal operation.
No REPAIR the circuit. This circui t includes the EMS fuse box, (f use 14), the EMS relay, etc. For
additional information, refer to the wiring diagrams. CLEAR the DT C. TEST the system for normal
operation.
PINPOINT TE ST
AB : DTC P1476; RADIATOR
FANS FAST (PARALLEL) CIRCUIT MALFUNCTION
TES
T
CONDITIONS
D E
TAILS/RESULTS/ACTIONS
AB1
:
CHECK THE RADIATOR FAN MODULE TO ECM
'PARALLEL' DRIVE CIRCUIT FOR HIGH RESISTANCE
Disc
onnect the battery negative terminal.
1
D
i
sconnect the ECM electrical connector, EM13.
2
Disc
onne
ct the fan module electrical connector, LS31.
3
Meas
ure t
he resistance between EM13, pin 16 (WU) and LS31, pin 07 (WU).
4
Is th
e res
istance greater than 5 ohms?
Yes REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. CLEAR the
DTC. TEST the system for normal operation.
No GO to AA2
.
AB2:
CHECK THE RADIATOR FAN MODULE TO ECM 'PARALLEL' DRIVE CIRCUIT FOR SHORT TO HIGH VOLTAGE
R
e
connect the battery negative terminal.
1
Turn the ignition swi
t
ch to the ON
position.
2
Measure t
he voltage between EM13, pin 16 (WU) and GROUND.
3

Is th
e voltage greater than 3 volts?
Yes REPAIR the short circuit. For addi tional information, refer to the wiring diagrams. CLEAR the DTC.
TEST the system for normal operation.
No GO to AB3
.
AB3
: CHECK THE RADIATOR FAN MODULE TO ECM
'PARALLEL' DRIVE CIRCUIT FOR SHORT TO GROUND
Turn the ignition swi
tch to the OFF
position.
1
Meas
ure the resistance between EM13, pin 16 (WU) and GROUND.
2
Is

the resistance less than 10,000 ohms?
Yes
REPAIR the short circuit. For addi tional information, refer to the wiring diagrams. CLEAR the DTC.
TEST the system for normal operation.
No GO to AA4
.
AB4
: CHECK THE RADIATOR FAN MODULE IGNITION SUPPLY
Re

connect the ECM electrical connector, EM13.
1
Turn the ignition swi

tch to the ON
position.
2
Measure the
voltage between LS
31, pin 08 (WP) and GROUND.
3
Is the vol
tage greater than 10 volts?
Yes INSTALL a new radiator fan module. REFER to Section 303
-0
3A Engine Cooling
/
30
3
-03
B
Supercharger

Cooling
. CLEA
R the DTC. TEST the sy
stem for normal operation.
No REPAIR the circuit between LS31, pin 08 (WP) and battery. This circuit includes the EMS fuse box-
(fuse 14), the EMS relay, etc. For additional information, refer to the wiring diagrams. CLEAR the
DTC. TEST the system for normal operation.
P
INPOINT TEST AC : DTC P1516, P1517; GEAR
CHANGE PARK/NEUTRAL DRIVING MALFUNCTION
TE
ST
CONDITIONS
D
ETAILS/RESULTS/ACTIONS
AC1: CH

ECK THE TRANSMISSION RANGE (TR) SE
NSOR TO ECM CIRCUIT FOR HIGH RESISTANCE
Di
sconnect the battery negative terminal.
1
Di

sconnect the TR sensor el
ectrical connector, EM47.
2
D
isconnect the ECM electrical connector, EM10.
3
Meas

ure the resistance between EM47, pin K (RU) and EM10, pin 15 (RU).
4
Is th

e resistance greater than 5 ohms?
Yes REPAIR the high resistance circui t. For additional information, refer to the wiring diagrams. CLEAR
the DTC. TEST the system for normal operation.
No GO to AC2
.
AC2: CH
ECK THE TRANSMISSION RANGE (TR)
SENSOR PARK/NEUTRAL SWITCHING ACTION
Meas
ure the resistance between pi
ns J and K of the TR sensor.
1
Mo
ve the selector lever from
PARK to NEUTRAL and back.
2
D
oes the resistance switch between open ci
rcuit and continuity as the lever moves?
Yes GO to AC3
.
No

INSTALL a new transmission range sensor. CLEAR th e DTC. TEST the system for normal operation.
AC3: CH
ECK THE D-4 SWITCH TO
TCM CIRCUIT FOR HIGH RESISTANCE
Di
sconnect the D-4 switch electrical connector, CC07.
1
Di

sconnect the TCM electrical connector, EM07.
2
Meas

ure the resistance between CC07,
pin 01 (US) and EM07, pin 13 (US).
3
Is th
e resistance greater than 5 ohms?
Yes REPAIR the high resistance circui t. For additional information, refer to the wiring diagrams. CLEAR
the DTC. TEST the system for normal operation.
No INSTALL a new transmission range sensor. CLEAR th e DTC. TEST the system for normal operation.
P
INPOINT TEST AD : DTC P1606;
EMS CONTROL RELAY MALFUNCTION

E
lectronic Engine Controls - Ca
mshaft Position (CMP) Sensor
Re
moval and Installation
Remov

al
1.
Disc
onnect battery ground cable (IMPORTANT, see SRO
86.15.19 for further information).
2. Remove engine covers ; refer to 12.30.06.
3. WARNING: BEFORE PROCEEDING, IT IS ESSENTIAL THAT
THE WARNING NOTES GIVEN IN SECTION 100-00 (UNDER THE
HEADING 'SAFETY PRECAUTIONS') ARE READ AND
UNDERSTOOD.
De-pressurize fuel system; refer to 19.50.02.

4. R
emove coolant expansion tank fixings and reposition tank for
access.

5. R
emove bolts securing fuel fe
ed pipe to inlet manifold.

6. Di
sconnect fuel feed pipe from inlet manifold and pull pipe
assembly clear.
Di
scard O-ring.
Inst

all suitable blanking plugs.
7. Disconnect CMP sensor connector.
De
press tang on connector to release, tools are not
necessary.

7.
Instal
l engine covers
; refer to 12.30.06.
8. Reconnect battery ground cable (IMPORTANT, see SRO
86.15.15 for further information).

E
lectronic Engine Controls -
Catalyst Monitor Sensor LH
Re
moval and Installation
General Equipment
Remov
al
Installation


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

2. CAUTI
ON: Make sure the wiring harness is not twisted or
damaged on removal. Failure to fo llow this instruction may result
in damage to the vehicle.
From inside the engine compartment, release the relevant
sensor(s) multiplug from its mounting bracket and disconnect
the plug.

3. NOTE
: Right-hand shown, left-hand similar.
Using the Snap-on tool S6176, remove the sensor from
underneath the vehicle.
1. Fitting is the reverse of the removal procedure, noting that a
new sealing washer should be used.

2. CAUTI
ON: 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 th
e exhaust seals.

El
ectronic Engine Controls -
Catalyst Monitor Sensor RH
Remo
val and Installation
General Equipment
Remov a
l
Installation


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

2. CAUTIO
N: Make sure the wiring harness is not twisted or
damaged on removal. Failure to fo llow this instruction may result
in damage to the vehicle.
• NOTE: Left-hand shown, right-hand similar.
From inside the engine compartment, release the relevant
sensor(s) multiplug from its mounting bracket and disconnect
the plug.

3. Us
ing the Snap-on tool S6176, remove the sensor from
underneath the vehicle.
1. Fitting is the reverse of the removal procedure, noting that a
new sealing washer should be used.

2. CAUTI
O
N: 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. Make good th e exh
aust seals.

E
lectronic Engine Controls - Cr
ankshaft Position (CKP) Sensor
Re
moval and Installation
Remov

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

2. R
emove ABS controller cover for access.

3. Di
sconnect engine harness connector from CKP sensor
connector.
De
press tang on connector to release, tools are not
necessary.

4. Re
lease CKP sensor plug from mounting bracket.
Depress tan

g on sensor plug
to release, tools are not
necessary.
5. Raise vehicle.
6. From below: release harn ess clips from engine.

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.