1998 JAGUAR X308 fuel injector connector

Fuel Ch
arging and Controls
- Fuel Injector4.0L NA V8 - AJ27/3.2L NA V8 -
AJ26
Re
moval and Installation
Remov

al
S
pecial Tool(s)

R

emover - Fuel Injector
303-539 (JD 231)
1. Disconnect battery ground cable (IMPORTANT, see SRO
86.15.19 for further information).
2. WARNING: BEFORE PROCEEDING, IT IS ESSENTIAL THAT
THE WARNING NOTES GIVEN IN SECTION 100-00 (UNDER THE
HEADING 'SAFETY PRECAUTIONS') ARE READ AND
UNDERSTOOD.
Depressurize the fuel sy stem; refer to 19.50.02.

3. R
emove engine covers.

4. Di
sconnect bank 1 or 2 inject
or connectors and reposition
harness to allow access to injectors.
5. Remove bolts which secure fuel injector clamp plate to inlet
manifold.

Fuel Charging and Controls
- Fuel Injector4.0L SC V8 - AJ26
Rem
oval and Installation
Remov

al
Installation

1.

Disconnect battery ground cabl e (IMPORTANT, see SRO 86.15.19
for further information).
2. WARNING: BEFORE PROCEEDING, IT IS ESSENTIAL THAT
THE WARNING NOTES GIVEN IN SECTION 100-00 (UNDER THE
HEADING 'SAFETY PRECAUTIONS') ARE READ AND UNDERSTOOD.
Depressurize fuel system; refer to 19.50.02.

3.

Disconnect injector connector.
1. Disconnect and reposition bank 1 or 2 fuel injector harness connector to allow access to injector.
2. Loosen but do not remove nut securing injector harness support bracket to camshaft cover. Reposition injector
harness to allow access to injector.
3. Detach injector connector.

4.

Remove fuel injector.
1. Prise out injector retaining clip, ensuring that it is not ejected and lost. Note orientation of clip.
2. Using a suitable implement, carefully lever injector from
fuel rail.
3. Discard injector O-rings.
5. Clean all mating faces.
1. Install fuel injector.
1. Install new O-rings, lubricat ed with petroleum jelly, to
fuel injector.
2. Install fuel injector into fuel rail. Press firmly until it is felt to click into place.
3. Hold injector firmly down and install injector securing clip in correct orientation.
2. Re-connect injector and harness connectors.
3. Tighten harness nut to 4-5Nm.
4. Reconnect battery ground cable (IMPORTANT, see SRO 86.15.15
for further information).

Fuel Char
ging and Controls - Fu
el Injectors4.0L SC V8 - AJ26
Remo
val and Installation
Remov
a
l
Installation
1. Disc onne
ct battery ground cable (IMPORTANT, see SRO
86.15.19 for further information).
2. WARNING: BEFORE PROCEEDING, IT IS ESSENTIAL THAT
THE WARNING NOTES GIVEN IN SECTION 100-00 (UNDER THE
HEADING 'SAFETY PRECAUTIONS') ARE READ AND
UNDERSTOOD.
Depressurize fuel syst em; refer to 19.50.02.
3. Drain radiator coolant; refer to 2
6.10.01.
4. Remove air cleaner cover / inta ke assembly; refer 19.10.30.
5. Remove throttle body; refer to 19.70.04.
6. Remove throttle induction elbo w; refer to (SC) 19.70.28.
7. Remove exhaust gas re-circulation valve (EGR) if fitted; refer
to 17.45.01.
8. Remove supercharger outlet duct and gasket; refer to
18.50.16.
9. Remove coolant outlet pipe; refer to (SC) 26.31.08 .
10. Remove supercharger drive belt; refer to 18.50.08.
11. Remove supercharger assembly; refer to 18.50.15.
12. Remove bank 1 or 2 charge air cooler as required; refer to
18.50.18 and / or 18.50.19.

13 . Di
sconnect fuel injector harness.
1. Disconnect injector connectors.
2. Loosen two nuts which se cure harness to camshaft
cover.
3. Reposition harness to al low access to injectors.

14. CAUTI
ON: Take care to avoi
d dropping any objects or
foreign matter into induction ma nifold with the fuel injectors
removed.
Remove fuel injector(s). 1. Prise out injector retaining clip, ensuring that it is not
ejected and lost. Note orientation of the clip.
2. Using a suitable implemen t, carefully lever injector
from fuel rail.
3. Discard injector O-rings.
15 . Cle
an all mating faces.

7. Re
move engine covers

8. Disc onne
ct electrical connector from each fuel injector.

9. Disc
onnect fuel feed hose.
1. Use special tool 310-044 (JD 182).
10. Disconnect fuel return hose.
1. Use special tool 310-054 (JD 203).

In
stallation
15.
Cle
an manifold and mating faces on cylinder heads.
1. Where necessary, install blanking plate to intake elbow.
Inst al
l new gasket.
Inst
al
l bolts (18-24Nm).

2. Inst al
l intake elbow to intake manifold.
1. Install new seal.
2. Install seven bolts.
3. Install new seals to the eight intake manifold ports. Ensure the
seals are fully seated.

4. Inst al
l intake manifold.
1. Install ten bolts.
5. Connect fuel feed hose to fuel rail feed pipe. Ensure hose is
fully installed.
6. Connect fuel return hose to fuel rail return pipe. Ensure hose is
fully installed.

7. Con n
ect electrical connectors to fuel injectors.
8. Install left-hand support brac ket to intake elbow and re-
connect pipework.
1. Install bolt.

Filler Cap and P
ipe
The fuel
filler cap with bayonet-type fixi
ng is located beneath a remote-release sp ring-latched lid on the rear saddle panel
on the left-hand-side of the vehicle.
Fuel Pum
p
The fu
el pump(s) is energized by an ECM co
ntrolled relay. Fuel is drawn by this pu mp and supplied to the fuel injectors via
the fuel line, filter and fuel rails.
Servicing of the fuel pump re quires fuel tank removal.
Ev
aporative Loss Flange Assembly
The evaporative-loss flan
ge asse
mbly is mounted centrally on top of the tank. The flange assembly consists of a removeable
steel cap which mounts the evaporative emissions system vapor outlet valves and, if applicable, a pressure sensor. The
external electrical supply to th e fuel pump(s) is also made via a connector on the flange.
The flange assembly is fixed to the tank by a locking ring which is turned usin g special tool JD-174. A seal is fitted between
the flange assembly and the tank. Three di fferent flange assemblies are applicable according to the evaporative emission
system fitted to the vehicle. The fl ange size and fixing are identical fo r the three systems, as described.
Removal of the evaporative flange assembly is necessary to gain access to th e fuel pump(s) and other internal components.
To remove the evaporative fl ange assembly the fuel tank must first be removed.
The evaporative flange variant assemblies are described, together with service information, in Section 303-13.
Fuel R
eturn
Excess fuel
is directed back to
the fuel tank via a return line.
Fuel Pum
p Relay
The
fuel pump relay,
under control of the ECM, switches power to the fuel pump motor.
I
nertia Fuel Shutoff (IFS) Switch
The IF
S switch is located in the right-hand
side footwell behind the footboard carpet . When activated the switch isolates the
ignition system and fuel pump, releases any locked doors and disables unnecessary electrical systems. The system can be
reset by pressing down the flexible cover on the top of the switch.
• NOTE: The doors will not unlock if the IFS switch is tripped when the ignition switch is in position '0'.