JAGUAR X308 1998 2.G Workshop Manual

En
gine - Engine
D
iagnosis and Testing
Sym

ptom Chart
Sy
mptom Chart
Pinp

oint test A: P1392 (P1397)
VVT solenoid circuit low input
S
pecial Tool(s)

D

igital multimeter

Generi

c scan tool
Sy

mptom
Possib
le Sources
Acti
on
D

TC P1392 VVT solenoid A circuit low input
So
lenoid coil open circuit
Harness open circuit or blown fuse
Connector pins(s) bent , loose or corroded
*
*
*
GO to
P
inpoint Test A

*
D
TC P1397 VVT solenoid B circuit low input
So
lenoid coil open circuit
Harness open circuit or blown fuse
Connector pins(s) bent , loose or corroded
*
*
*
GO to
P
inpoint Test A

*
D
TC P1393 VVT solenoid A circuit high input
So
lenoid coil short circuit
Harness short circuit
Connector pins(s) bent , loose or corroded
*
*
*
GO to
P
inpoint Test B

*
D
TC P1398 VVT solenoid B circuit high input
So
lenoid coil short circuit
Harness short circuit
Connector pins(s) bent , loose or corroded
*
*
*
GO to
P
inpoint Test B

*
D
TC P1396 VVT solenoid B malfunction
O
il pressure failure
VVT solenoid sticking
Connector pins(s) bent , loose or corroded
Crankshaft position sensor failure
ECM failure
*
*
*
*
*
GO to
P
inpoint Test C

*
P
INPOINT TEST A : P1392 (P1397) VVT SOLENOID CIRCUIT LOW INPUT
•
NOTE: References in brac
kets are for Bank B (2)
T
EST CONDITIONS
D
ETAILS/RESULTS/ACTIONS
A1

: RETRIEVE DTCS
•

NOTE: Battery and or ECM disconnection prior to scanning wi
ll erase all data, ensure that the correct DTC is present.

Connect
the scan tool
1
Have the DTC(s) and fr
eeze f
rame data been recorded?
Yes GO to A2
A2: CH
ECK FUSE / RELAY
Check that fuse F
12 i
s good
and that EMS control relay is
energized
1
OK ?

Yes GO to A3
No Rectify as required
A3: CH
ECK VVT COIL RESISTANCE

W
ith VVT connector PI031 - A bank or (PI032 - B bank)
disconnected, measure the resistance between the pins 1
and 2 at the VVT actuator
1
I
s the resistance less than 5
OHM or greater than 20 OHM?
Yes Renew the VVT solenoid and te st the system for normal
operation.
No GO to A4
A4: CHECK
HARNESS CONTINUITY

Wi
th EM015 and PI031 (PI032) disconnected, measure
the resistance between EM015/009 (EM015/008) and
PI031/001 (PI032/001)
1
Is
the resistance < 0.5 OHM?
Yes GO to A5
No Inspect harness / connec tors EM015, PI031 (PI032),
PI001/016 (PI001/027) for corrosion, damage, bent or
pushed back pins and repair as required. Test the system
for normal operation.
A5: CHEC K HA
RNESS (GROUND) CONTINUITY

Pin
point test B: P1393 (P1398) VVT solenoid circuit high input
W
ith EM014 disconnected, measure the resistance
between EM014/009 and ground EM016L
1
I
s the resistance < 0.5 OHM?
Yes Reconnect EM014, EM015, PI031 or (PI032)
GO to A6
No Inspect harness / connector EM014, ground stud and
splice EMS37 for corrosion, damage, bent or pushed back
pins and repair as required. Test the system for normal
operation.
A6
: 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
P
INPOINT TEST B : P1393 (P1398) VVT SOLENOID CIRCUIT HIGH INPUT
•
NOTE: References in brac
kets are for Bank B (2)
T
EST CONDITIONS
D
ETAILS/RESULTS/ACTIONS
B1

: RETRIEVE DTCS
•

NOTE: Battery and or ECM disconnection prior to scanning wi
ll erase all data, ensure that the correct DTC is present.

Connect
the scan tool
1
Have the DTC(s) and fr
eeze f
rame data been recorded?
Yes GO to B2
B2 : CH
ECK VVT COIL CONTINUITY
W
i
th VVT connector PI031 - A bank or (PI032 - B bank)
disconnected, measure the resistance between the pins 1
and 2 at the VVT actuator
1
I s
the resistance >20 OHM?
Yes Renew the VVT solenoid and te st the system for normal
operation.
No GO to B3
B3: CHECK
SHORT TO B+

R
emove fuse F12
1
W

ith EM015, EM014, PI031 or (PI032) disconnected,
measure the voltage between EM015/009 (EM015/008)
and EM014/009
2
0 V?

Yes Reconnect EM015 and EM0 14 and replace fuse F12
GO to B4
No Inspect EM015, PI031 or (PI032) for bent / pushed back
pins or locate and repair the harness / connector
PI001/016 or (PI001/027) Test the system for normal
operation.
B4
: CHECK B+ AT VVT SOLENOID

Measure
the voltage between PI031/002 (PI032/002) and

ground EM016L
1
B+ ?
Yes
GO to B5
No

Inspect EM020/010, PI001, PI031 (PI032) for bent /
pushed back pins or locate and repair harness / splice
PIS06.
B5
: CHECK HARNESS SHORT TO GROUND

W
ith EM015 and EM014 disconnected, measure the
insulation resistance between EM015/009 (EM015/008)
and ground EM014/009
1
I
s the resistance > 10 MOHM?
Yes Do not reconnect
GO to B6
No Inspect EM015, and EM014 for corrosion, bent / pushed
back pins or locate and repa ir the harness / connector.
Test the system for normal operation.
B6
: CHECK HARNESS SHORT CORE TO CORE

Pinpoint test C: P1396
VVT solenoid malfunction
W
i
th EM015, EM014 PI031 and PI032 disconnected,
measure the insulation resistance between EM015/009
and EM015/008
1
I s
the resistance > 10 MOHM?
Yes Reconnect all connectors
GO to B7
No Inspect EM015 and PI031 (PI032) for corrosion, bent /
pushed back pins or locate and repair the harness /
connector PI001/016 (PI001/027). Test the system for
normal operation.
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 : P1396 VVT SOLENOID MALFUNCTION
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.