1998 JAGUAR X308 relay

Ig
nition switch to position 0
1
R
e
move intercooler
coolant pump relay
Inside EC
M housing
2
Ignition switc
h
to position II
3
Ch
e
ck for battery voltage at relay socket between pins 3
and 2.
4
B+ ?
Yes
GO to D6

No GO to D4
D4: C H
ECK RELAY SOCKET SUPPLY CONTINUITY
•

NOTE: Install fuse F2.
Do not replace relay.

I
gnition switch to position 0
1
Re

move engine management fuse F2
2
Meas

ure the resistance between relay socket pin 3 and
the load side of fuse F2.
3
I
s the resistance < 0.5 OHM?
Yes GO to D5
No Inspect harness / connectors EM020 and EM041 (relay
socket) for corrosion, damage, bent or pushed back pins.
Repair as required and te st the system for normal
operation.
D5:
CHECK RELAY SOCKET
GROUND CONTINUITY

Ig
nition switch to position 0
1
Meas
ure re
sistance between relay socket pin 1 and
ground EM017.
2
I s
the resistance < 0.5 OHM?
Yes GO to D6
No Inspect harness / connec tors EM020, EM041 (relay
socket) and splice EMS11 for corrosion, damage, bent or
pushed back pins. Repair as required and test the system
for normal operation.
D6: CHECK
RELAY COIL SUPPLY VOLTAGE
• NO

TE: Renew relay.

Ignition switc
h to position II
1
Meas

ure voltage between relay socket between pin 2 and
ground EM017.
2
B+ ?
Yes

GO to D8
No GO to D7
D7: C
HECK ECM SUPPLY TO RELAY CONTINUITY

Ig
nition switch to position 0
1
D
i
sconnect EM013
Inside E
C
M housing
2
Me
asure
the resistance between EM013/010 and relay
socket pin 2.
3
I s
the resistance < 0.5 OHM?
Yes STOP, renew the relay and test the system for normal
operation.
No Inspect harness / connector EM013 and relay socket for
corrosion, damage, bent or pushed back pins. Repair as
required and test the syst em for normal operation.
D8:
END
Perform
a
ppropriate service drive cycle and check for the
presence of DTC.
1
Has th
e fault code cleared?
Yes STOP
No Contact Jaguar Service

Ci
rcuit references to injectors:
'A' refers to bank 1;
'B' refers to bank 2.
Fuel C
harging and Controls - Supercharged Vehicles
Ci
rcuit Diagram, Fuel Injection
System - Supercharged Vehicles
It
em
Par
t Number
De
scription
1—E

ngine compartment fuse-box
2—Engine

management fuse-box
3—Splice

- 12V to
other circuits
4—PI m
ain relay
5—Engine

control module (ECM)
6—Fue

l injector 1A - other injectors similar

Ci rcui
t references to injectors:
'A' refers to bank 1;
'B' refers to bank 2.
It e
m
Par
t
Number
De
scr
iption
1—E
n
gine compartment fuse-box
2—Engine
m
anagement fuse-box
3—Splice
- 12V to ot
her circuits
4—PI m
a
in relay
5—Engine
control module (E
CM)
6—Fue
l
injector 1A - other injectors similar

Fuel Char
ging and Controls - Fuel Charging and Controls
D
iagn
osis and Testing
I
n
spection and Verification
1.
1. Veri fy the customer concern.
2. 2. Confi
rm which, if any, warning li
ghts and/or messages were displayed on the instrument cluster.
• NOTE: If any warning lights and/or me ssages were displayed when the fault occurred, refer to the Driver Information
table for DTCs associated with the display, then to the DTC index table for possible sources and actions. Some warnings will
appear to clear when the ignition is cycl ed. This is often because the warning has flagged as a resu lt of one of the vehicle's
on-board diagnostic routines having run to detect the fault. If the same routine is not run when the ignition is switched ON,
the warning will not reflag until the routine does run. See the DTC summaries for drive cycle routines.
3. 3. Visually inspect for obvious signs of mechanical or electrical damage.
Vi
sual Inspection Chart
4.
4. Veri fy the foll
owing syst
ems are working correctly:
Air intake
system
Cooling system


Charging system
5. 5. If
an obvious cause for an observed or
reported concern is found, correct th e cause (if possible) before proceeding
to the next step.
6. 6. Where the Jaguar approved diagnostic sy stem is available, complete the S93 report before clearing any or all fault
codes from the vehicle.
• NOTE: If a DTC cannot be cleared, then there is a permanent fault present that flag s again as soon as it is cleared (the
exception to this is P1260, which will only clear following an ignition OFF/ON cycle after rectification).
7. 7. If the cause is not visually evident and the Jaguar approv ed diagnostic system is not available, use a fault code
reader to retrieve the fault codes be fore proceeding to the Diagnostic Trou ble Code (DTC) Index Chart, or the
Symptom Chart if no DTCs are set.
• NOTE: If the DTC flagged was not present for two or more co nsecutive cycles, it is classed as temporary, and will be
deleted following three cycl es during which no fault was present. This could result in a reported wa rning light/message with
no stored DTCs. If a fault is present for three consecutive cycles, the DTC becomes permanent, and will remain in the
module's memory for 40 drive cycl es (a cycle is an ignition OFF/ON, which will occur during the owner's normal use of the
vehicle. No action on the part of the technician is necessary to perform this cycle. A drive cycle is a series of conditions
needed to make the on-board diagnostic ro utine run, and may need a specific action on the part of the technician. See the
DTC summaries for drive cycle routines).
8. 8. Using the Jaguar approved diagnostic system where available, and a scan tool where not, check the freeze frame
data for information on the conditions applicable when the fault was flagged. The format of this will vary,
depending on the tool used, but can pr ovide information useful to the technician in diagnosing the fault.
MechanicalElectrical
Engine
oil level
Coo
ling system coolant
lev
el
Fuel contamination
Throttle body Poly-ve
e belt
Fu
ses
W
i
ring harness
E
l
ectrical connector(s)
Sens
o
r(s)
Engine
control module (E
CM)
Tran
s
mission control module
Check spark plu
g type. Only r
e
sisted plugs should be fitted. Refer to specifications
section for gap
Relay date codes. I
f the date on the rela
y is between R6 k1 and R6 k8, replace the
relay