JAGUAR X308 1998 2.G Workshop Manual

I
gnition switch to position 0
1
Di

sconnect EM011
Inside E

CM housing
2
D

isconnect PI004
Re

ar of top hose
3
Meas

ure the resistance between the ECM connector
EM011/009 and the ECT connector PI004/002.
4
I
s the resistance < 0.5 OHM?
Yes GO to B4
No Inspect harness / connector EM011/009, PI004/002 and
PI001/005 for corrosion, damage , bent or pushed back
pins. Repair as necessary and test the system for normal
operation.
B4: CHECK
HARNESS CONTINUITY
•

NOTE: To avoid a spurious result, disconnect connectors PI042 and PI006 (electronic throttle body) and PI035 (MAF
meter).

Ig
nition switch to position 0
1
Di
sc
onnect EM010
Inside E
C
M housing
2
Meas
ure t
he resistance between the ECM connector
EM011/012 and the ECT connector PI004/001.
3
I s
the resistance < 0.5 OHM?
Yes GO to B5
No Inspect harness / connector EM011/012, PI004/001,
PI001/006 and splices EMS02 / PIS01 for corrosion,
damage, bent or pushed back pins. Repair as necessary,
reconnect all connectors. Te st the system for normal
operation.
B5: CHECK HARNESS
CONTINUITY
•
NOTE
: Do not reconnect electronic thro
ttle body connectors PI042 and PI006.

I
gnition switch to position 0
1
Di

sconnect EM010
Inside E

CM housing
2
Meas

ure the resistance between the ECM connector
EM010/020 and the ECT connector PI004/001.
3
I
s the resistance < 0.5 OHM?
Yes GO to B6
No Inspect harness / connector EM010/020, PI004/001,
PI001/006 and splices EMS02 / PIS01 for corrosion,
damage, bent or pushed back pins. Repair as required and
reconnect all connectors. Te st the system for normal
operation.
B6:
CHECK FOR SHORT TO B+

Pinpoint test C: P0118
I
g
nition switch to position 0
1
Di
sc
onnect EM011
Inside E
C
M housing
2
I
g
nition switch to position II
3
Measure the
voltage betwee n pin
s 9 and 12 of the
connector.
4
Is th e volt
age > 1 V?
Yes Inspect harness / connector EM011/009, PI004/002,
PI001/005 and splices EMS02 / PIS01 for corrosion,
damage, bent or pushed back pins. Repair as required and
reconnect all connectors. Te st the system for normal
operation.
No GO to B7
B7: EN
D
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
PINPOINT TES
T C : P0118
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.

Conne
ct the scan tool
1
Have the DTC(s) and fr

eeze
frame data been recorded?
Yes GO to C2
C2
: CHECK ECT SENSOR SHORT
I

gnition switch to position 0
1
D

isconnect PI004
Re

ar of top hose
2
Meas

ure the resistance between sensor pins 1 and 2.
3
Re

sistance < 100 OHM?
Yes Renew sensor and proceed to C5
No GO to C3
C3
: CHECK FOR SHORT TO GROUND

Pinpoint test D
: P1474
I
g
nition switch to position 0
1
Di
sc
onnect EM011
Inside E
C
M housing
2
Meas
ure t
he resistance betw
een pins 9 and 12 of the
connector.
3
Re si
stance < 0.5 OHM?
Yes Inspect harness / connector EM011/0012, PI004/001,
PI001/006 and splices EMS02 / PIS01 for corrosion,
damage, bent or pushed back pins. Repair as required and
reconnect all connectors. Te st the system for normal
operation.
No GO to C4
C4: 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
PINPOINT TES
T D : P1474
T
E
ST CONDITIONS
D
E
TAILS/RESULTS/ACTIONS
D1
:
RETRIEVE DTCS
•
NOTE
: Battery and or ECM disconnection prior to scanning wi
ll erase all data, ensure that the correct DTC is present.

Conne
ct the scan tool
1
Have the DTC(s) and fr

eeze
frame data been recorded?
Yes GO to D2
D
2: CHECK FUSE
•

NOTE: See further steps for poss
ible cause of fuse failure.
Chec
k fuse F2 integrity (located in the engine
management fuse box).
1
OK
?
Yes GO to D3
No Renew fuse and test the syst em for normal operation.
D3: C
HECK RELAY SOCKET SUPPLY VOLTAGE
•

NOTE: Do not replace 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.