1998 JAGUAR X308 fault code

GO to H8
No

Renew O2 sensor. Reconnect plug(s)
GO to H7
H7
: STOP
Perform

appropriate service drive cycle and check for the
presence of DTC.
1
Has
the fault code cleared?
Yes STOP
No Contact Jaguar Service
H
8: CHECK FOR O2 SENSOR CONTINUITY
W

ith EM012 and EM024 disconnected, measure the
resistance between EM012/016 and EM024/002.
1
I
s the resistance < 0.5 OHM
Yes GO to H9
No Inspect harness / connectors EM012 and EM024 for corrosion,
damaged / pushed back pins.
Repair as required an d reconnect plug(s).
GO to H11
H9: O2
SENSOR SCREEN GROUND CONTINUITY

W
ith EM024 disconnected measur
e the insulation resistance
between sensor pin 001 and sensor body.
1
Repeat
for pin 002 and sensor body.
2
I

s the resistance > 10 MOHM?
Yes GO to H12
No Renew the O2 sensor and reconnect all plugs.
GO to H11
H1
1: STOP
Perform

appropriate service drive cycle and check for the
presence of DTC.
1
Has
the fault code cleared?
Yes STOP
No Contact Jaguar Service
H12: SI
GNAL GROUND 1 CONTINUITY

W
ith EM010 and EM014 disconnected, measure the
resistance between EM014/004 and chassis ground EM008L.
1
I
s the resistance < 0.5 OHM?
Yes GO to H15
No Inspect harness / connector EM014 for corrosion, damage, or
pushed back pin.
Inspect ground stud EM008L for corrosion or damage.
Inspect harness / spli ce EMS36 for damage.
Repair as required an d reconnect plug(s).
GO to H14
H1
4: STOP
Perform

appropriate service drive cycle and check for the
presence of DTC.
1
Has
the fault code cleared?
Yes STOP
No Contact Jaguar Service
H
15: CHECK FOR O2 SENSOR CONTINUITY

M
easure the insulation resistance between EM012/016 and
EM012/022.
1
I
s the resistance > 10 MOHM?
Yes Reconnect all plugs.
GO to H21
No Inspect harness / connectors EM012, EM015 and EM024 for
corrosion, bent / pushed back pins.
Repair as required an d reconnect plug(s).
GO to H21
H2
1: END
Perform

appropriate service drive cycle and check for the
presence of DTC.
1
Has
the fault code cleared?
Yes STOP
No Contact Jaguar Service

Pinpoint test B:
P1646
W
i
th conditions as in A14, measure the insulation
resistance between EM013/001 and BT009/001.
1
I s
the resistance > 10M OHM?
Yes Reconnect all plugs and replace relay 4.
GO to A16
No
A 16:
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 Ja
guar Serv ice
PINPOINT TEST B : B: P1646
TE
ST CONDITIONS
D
E
TAILS/RESULTS/ACTIONS
B1
: RETRI
EVE DTCS
•
NOTE
: Battery and or ECM disconnection prior to scanning wi
ll erase all data, ensure that the correct DTC is present.

Pinpoint test C: P0460
Wi
th conditions as in B14, measure the insulation
resistance between EM013/009 and BT009/003.
1
I s
the resistance > 10M OHM?
Yes Reconnect all plugs and replace relay 1.
GO to B16
No
B 16:
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
PI
NPOINT TEST C : C: P0460
T
E
ST CONDITIONS
D
E
TAILS/RESULTS/ACTIONS
C1
: RETRIEVE DTC
S
•
NOTE
: Battery and or ECM disconnection prior to scanning wi
ll erase all data, ensure that the correct DTC is present.

W
ith connectors FC025, FC024, and BT014 disconnected
measure the resistance between FC025/013 and BT014.
1
I
s the resistance < 0.5 OHM?
Yes GO to C7
No Inspect harness / connectors / pins FC024, FC001/004,
BT004/025 and BT014 for corrosion, damage, bent or
pushed back pins. Repair as required and test the system
for normal operation.
C7
: END
Perform

appropriate service drive cycle and check for the
presence of DTC.
1
Has
the fault code cleared?
Yes STOP
No Contact Jaguar Service

Speed Control - Speed
Control
D
iagn
osis and Testing
Pri
n
ciples of operation
The s
p
eed (cruise) control sy
stem is activated by an ON/OFF master switch in the J-gate surround, which has an integral
LED to indicate status.
The steering wheel switches allow the driver to set the speed, increase or decrease the selected speed, cancel and resume
the facility without his/her hand ever leaving the steering wheel
The vehicle speed can be increased an d decreased in increments of 2 kmh (1 mph) by briefly pressing the + or - buttons up
to a maximum of five times.
Alternatively, the + or - button can be held until th e desired speed is reached.
The selected speed (by whichever method) w ill be displayed in the message center.
The system will not function at speeds below 26 kmh (16 mph), and can be cancelled from the master switch, the steering
wheel switches, and by depressing th e brake pedal. The system can be overridden by accelerating as normal.
In
spection and Verification
1.
1. Veri fy the customer concern.
2. 2. Vis
ually inspect for obvious signs of mechanical or electrical damage.
3. 3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding
to the next step.
4. 4. If the cause is not visually evident, verify the symptom, check for DTCs and follow the routines in this section.
Vi
sual Inspection Chart
Diagnostic Trouble Code (D
TC) index
MechanicalElectrical
Throttle body mechan
ism
Throttle body actuator
Module Switch(es) Instrument cluster
DTC

De
scr
iption
Possib
l
e Source
Acti
o
n
P0566Speed
c
ontrol
CANCEL
switch ON fault
Speed
control switches internal steering wheel
short circuit to ground
St
eering wheel cassette reel short circuit to
ground
Cassette reel to ECM circ
uit short circuit to
ground
CANCEL
switch failure (stuck ON)
Fo
r

CANCEL switch circuit
tests,GO to Pinpoint Test A.
P0567Speed c
ontrol
RESUME
switch ON fault
Speed
control switches internal steering wheel
short circuit to ground
St
eering wheel cassette reel short circuit to
ground
Cassette reel to ECM circ
uit short circuit to
ground
RESUME swit
ch failure (stuck ON)
For

RESUME switch circuit
tests,GO to Pinpoint Test B.
P0568Spee
d control switch
ground malfunction
Speed
control switches internal steering wheel
open circuit
St
eering wheel cassette reel open circuit or
high resistance
Cassette reel to ECM ci
rcuit open circuit or high

For

ACCEL/DECEL switch circuit
tests,GO to Pinpoint Test C.