low oil pressure JAGUAR X308 1998 2.G Workshop Manual

                    Knock Sensor  (KS)  RH  (18.30.93)  
                    
Variable Camshaft  Timing  (VCT)  Oil  Co ntrol
 
Solenoid  (18.30.90)  
 
        
307:  Automatic  Transmission/Transaxle  
 
             307‐01A : Automatic  Transmission/Transaxle  ‐ 3.2L  NA  V8  ‐ AJ26/4.0L  NA V8  ‐ AJ27  
                 Specification  
                 Description  and  Operation  
                     Transmission  Description 
                 Diagnosis  and  Testing  
                     Diagnostic Strategy  
                 General Procedures  
                     Transmission  Fluid Drain  and  Refill  (44.24.02)  
                 In‐Ve
hicle  Repair  
                     Electronic Pressure  Control (EPC)  Solenoid  (44.15.51)  
                     Extension Housing  Seal  (44.20.18)  
                     Extension Housing  O ‐Ring  Seal  (44.20.19)  
                     Main Control  Valve Body  (44.40.01)  
                     Output Shaft  Speed  (OSS)  Sensor  (44.15.41)  
                     Shift Solenoids  (SS)  (44.15.50)  
                     Transmission  Control Module  (TCM)  (44.15.32)  
                     Transmission  Fluid Filter  (44.24.07)  
                     Transmission  Fl
uid  Pan  (44.24.04)  
                     Transmission  Fluid Pan  Gasket  (44.24.05)  
                     Transmission  Internal Wiring  Harness  (44.15.35)  
                     Transmission  Internal Wiring  Harness  Electrical  Connector  O‐Ring  Seals  
            (44.24.20) 
                     Transmission  Range (TR)  Sensor  
                     Transmission  Support Insulator  (12.45.04)  
                     Turbine Shaft  Speed  (TSS)  Sensor  (44.15.40)  
                 Removal 
                     Transmission  (44.20.01) 
                 Disassembly  and  Assembly  of Subassemblies  
                     Input Sh
aft  Seal  (44.32.07)  
                     Torque Converter  (44.17.07)  
                 Installation  
                     Transmission  (44.20.01) 
Mass
 
Airflow
 
Sen s
or
 
Knock
 Sensor
 (KS)
 LH
 (18.30.92)
 

Safety Standard
Canister PurgeCANPControls pu
rging of the EVAP canister
Carbon dioxideCO2Colorless gas with

a density of a
pproximately 1.5 ti mes that of air
Carbon mon
oxide
COPoi
sonous gas produced as the re
sult of incomplete combustion
Case G
round
CSE GNDControl modu
le casing ground
Catal

ytic converter
In
-line exhaust system device used to reduce the level of engine exhaust
emissions
Ce
lsius
CSI ter
m for the Centigrade scale, with
freezing point at zero and boiling point
at 100°
Central
Processor Unit
CPUTh
e section of a computer that contai
ns the arithmetic, logic and control
circuits. It performs arithm etic operations, controls instruction processing, and
provides timing signals and other housekeeping operations
Cl
osed Loop
CL
Cl

osed Loop System
CLSControl
system with one
or more feedback loops
Col
umn/Mirror Control
Module
C/MC
M
Control ModuleCMA

self-contained group of electrical/electronic components, designed as a
single replaceable un it, and controlling one or more processes
Controll
er Area Network
CANA
communication system which allows control modules to be linked together
in a network.
Crankshaft Posi
tion
Sensor
CKPSGenerates crankshaft positi on informa
tion in conjunct
ion with the CKPTR (also
generates speed information in certain applications)
Crankshaft Posi
tion
Timing Ring
CKPT
R
Toothe
d ring which
triggers the CKPS
Crankcase Ventila
tion
System
CVSys
tem which scavenges camshaft cover and crankcase emissions and feeds
them into the inlet manifold
Cubic ce nt
imeter
cm
3
Curb weightWe

ight of vehicle with fuel, lubrican
ts and coolant, but excluding driver,
passengers or payload
D
Dat
a Link Connector
DLCConne
ctor providing access and/or control of the vehicle information,
operating conditions, and diagnostic information
De
gree
deg, °Angle or tempe
rature
D

epartment of
Transportation (US)
DO
T
D

epartment of Transport
(UK)
DTp
De
utsche In
stitut für
Normung
DINGerman stand
ards regulation body
Di

agnostic Module
DMSuppl
emental Restraint System (non-c
ontrolling) module for diagnostics
overview
Di
agnostic Test Mode
DTMA le
vel of capability in an OBD system.
May include different functional states
to observe signals, a base level to re ad DTCs, a monitor level which includes
information on signal levels, bi-directional control with on /off board aids, and
the ability to interface with remote diagnosis
Diagnostic Trouble CodeDTCAn al
pha/numeric identifier for a fault
condition identified by the On-Board
Diagnostic (OBD) system
D
ial test indicator
DTIA mechan
ical measuring
instrument, with a rotary indicating pointer
connected to a linear operating probe
D
ifferential pressure
Pressure di
fference betwee
n two regions e.g. between intake manifold and
atmospheric pressures
D
ifferential Pressure
Feedback EGR
DP
FE
An
EGR system that monito
rs differential EGR pressure across a remote orifice
to control EGR flow
D
irect current
dcCurrent which f
lows in on
e direction only, though it may have appreciable
pulsations in its magnitude
Du
al linear switch
DLSJ
-gate switch connected to the TCM on SC vehicles
E
EGR

Temperature EGRT
Sensor
EGRTSens
ing EGR function based on temperature change
EGR Vacu

um Regulator
EVRControls EGR
flow by changi
ng vacuum to the EGR valve
EGR Valve
Position
EVPAn EGR
system that direct
ly monitors EGR valve position to control EGR flow
Electrically E
rasable
Programmable Read-Only
Memory
EEP
ROM

High
tension (electrical)
ht
Hourh
Hydro

carbon
HC
I
Idl

e Air Control
IACEl
ectrical control of throttle bypass air
Idl

e Air Control Valve
IACVStepper motor dri
ven device which vari
es the volume of air by-passing the
throttle to maintain the programmed idle speed
Ignitionign
Ignition am
plifier
IAD
evice which amplifies the i
gniti
on system output
Ignition groundIGN GND
In

ertia Fuel Shut-off
IFSAn
inertia system that shuts off the fuel supply when activated by pre-
determined force limits brough t about by (e.g.) collision
In
ertia Fuel Shut-off
Switch
IFSSShut
s down fuel and ignition systems in the event of a vehicle impact
Inta

ke air
Air drawn t
hrough a cleaner and distri
buted to each cylinder for use in
combustion
InputI/PAn
electrical input signal to a controlling device
Inta

ke Air Temperature
IATTem
perature of intake air
Inta

ke Air Temperature
Sensor
IATSDe
vice used to measure IAT
Inta

ke Air Temperature
Sensor Ignition
IATSITherm
istor which signals the ECM to retard
the ignition timing in response to
high inlet air temperatures
Inta
ke Air Temperature
Sensor Injection
IATSFTher
mistor which inputs air density information to the ECM
Internal diameteri.

dia
Inte

rnational Standards
Organization
ISO
K
Kilogramme (mass)kg
Kilogram
me (force)
kg
f
Ki

logramme force per
square centimeter
kg
f/cm2
Kilom

eter
km
Ki

lometer per hour
km
/h
Kilopasc

al
kP
a
KilovoltkV
Knock

Sensor
KSSens
or which detects the onset of detonation, and signals the ECM to retard
the ignition
L
Le
ft-hand
LH
Left-hand drive veh

icle
LHD
Le

ft-hand thread
LH Thd
Ligh

t Emitting Diode
LEDLigh
t-emitting semiconductor diode used
in alphanumeric displays and as an
indicator lamp
Liqu
id Crystal Display
LCDOp
tical digital display system, applied voltage to which varies the way the
crystals reflect light, thereby modifying the display
LiterL
Low ten
sion
ltPrim
ary circuit of the ignition system, linking the battery to the primary
winding in the ignition coil
M
Malfu
nction Indicator
Lamp
MILA
required on-board indicator to aler
t the driver of an emission related
malfunction
Mani
fold Absolute
Pressure
MAPAbsolute pressure o
f the intake manifold air
Mani

fold Absolute
Pressure Sensor
MAPSSensor loca
ted in the ECM and
ported to the intake manifold
Manifol
d Surface
Temperature
MST
Mass Ai
r Flow
MAFSy
stem which provides inform
ation on the mass flow rate of the intake air to
the engine
Mass Ai
r Flow Sensor
MAFSHot-wi
re sensor which monitors air flow
into the intake manifold for fueling
and ignition control
Maxim
um
max.

Mem
ory
Pulse Width ModulationPW

M
A
method of control in an electronic co
ntrol system in which the duration of
pulses in a pulse train is proportional to the amplitude of the modulating
signal
R
Ran
dom Access Memory
RAMF
ast access memory store which is accessible for entry or extraction of data
Re

ad-Only Memory
RO
M
F
ast access memory in which data
is fixed and may not be changed
Re
servoir
RESContaine
r, usually for oils,
coolants or hydraulic fluids
Re
turn
RTNA
dedicated sensor ground circuit
R

evolutions Per Minute
RP
M
Shaft speed o
f a device, us
ually an engine or motor
R
ight-hand
RH
Right-hand drive veh

icle
RHD
S
Scan T

ool
STDe
vice that interfaces with and comm
unicates information on a data link
Se
at Control Module
SCMModule
controlling the seat motor systems (not electric raise/lower-only
seats)
Secon
dary Air
Air pro
vided to the exhaust system
Secon

dary Air Injection
AIRSy
stem used for a period of time each
time the engine is started, unless
certain temperature criter ia are met. Pumps air directly into the exhaust
system which generates extra heat and reduces the time taken for the
catalytic converters to reach operating temperature
Secon
dary Air Injection
Bypass
AIRBVents secon
dary air to atmosphere
Secon

dary Air Injection
Check Valve
AIRCValve wh
ich prevents back-flow of exhaust gas to the AIR system when the
system is inoperative
Secon
dary Air Injection
Diverter
AIRDD
iverts secondary air to either
the catalyst or exhaust manifold
Secon
dary Air Injection
Magnetic Clutch
AIRP
C
Clu
tch mounted on the AIRP drive shaft
Secon

dary Air Injection
Pump
AIRPMe
chanically driven rotary vane
pump, driven through the AIRPC
Secon
dary Air Injection
Relay
AIRRCont
rols the injection of air into the exhaust system
Secon

dary Air Injection
Switchin
g Va
lve
AIRSV
acuum operated valve backing-up the AIRC
Secu

rity and Locking
Control Module
SLCMModul
e controlling the vehicle's security and closure-locking functions
SensorSGeneri

c name for a device
that senses either the absolute value or a change
in a physical quantity su ch as temperature, pressure or flow rate, and
converts that change into an electrical quantity signal
Servic
e Repair Operation
(number)
SRONu
mber generated by Jaguar Methods
and Techniques system which relates
to the time allowed to complete a repair operation. Further information on the
system can be found in the separate Jaguar Publications (for each model
range) entitled 'Repair Operation Times'
Shif
t signal
SDA
shift process signal to the TCM on SC vehicles
Shif

t Solenoid
SSControls shi
fting in an automatic transmission
Si

gnal return
SIG RTN
Slidin

g Roof Control
Module
SRCM
Society of Automotive

Engineers
SAE
Speed
Control Control
Module
SCCMModule con
trolling Speed Control System
Square c

entimeter
cm
2
Stan

dard
std
Stan

dard Corporate
Protocol
SCPA
high-speed, serial communications system linking all body system control
modules. Control messages and data ar e passed between modules at up to
786 messages per second
SuperchargerSCAn in
take system which utilizes a supercharger (mechanically driven device
that pressurizes intake air, thereby in creasing density of charge air and the
consequent power output from a given displacement)
Supercharger
Bypass
SCB
SwitchSW
T

The
Nivomat ride levelling system improves ride quality by al
lowing the use of softer road springs, while controlling the
effects on the suspension of a fully laden vehicle. The system uses special rear dampers in place of the normal units. There
are no other components in th e system. The ride levelling system is comple tely automatic, requiring no input from the
driver.
Ride levelling may be specified as an opti on on certain models; it is not available in north American markets. Ride levelling
and adaptive damping are mu tually exclusive options.
The Nivomat damper:
Su
pplements the load-carrying capacity of th
e road springs at high vehicle loads.
Uses road inputs to the
suspension to power the levelling function.
De

tects suspension height dire
ctly from road wheel travel.
Provi
des load-dependent spring rates; the ac
cumulator gas pressure increases with load.
Pr
ovides load-dependent damping; the fluid pressure increases with load.
Op

eration
F
ollowing an increase in vehicle loading,
the dampers adapt to maintain the height of the vehicle within its design range.
The system uses road inputs to the suspension to power the levelling action, and requires up to approximately two
kilometers of travel, following a change in load, to complete the process.
Normal movement of the suspension caus es a pumping action to occur within the damper, as a result of extension and
compression of the pump rod in the pump chamber. Hydraulic fluid is pumped from the pump cham ber into a high pressure
gas accumulator. The increase in gas pressure augments the force developed between th e vehicle axle and the body,
thereby providing lift.
It
em
De
scription
1Pi

ston rod
2Pum

p chamber
3High

pressure
gas accumulator
4Diaphragm
5Co
ntrol orifice
6Pump rod
7Low pressure gas ch

amber
8Low pressure oil

reservoir


Ride Levelling

A c
ontrol orifice in the pump rod determines the levelling height. When the damper is compressed, this orifice is covered.
When the damper extends, the control orif ice is uncovered, pressure is released to the low pressure oil reservoir and the
system ceases to rise. When the vehicle is high after unloading, the opened control or ifice allows fluid to be returned to the
low pressure oil reservoir, and the suspensi on returns to its normal unladen height.
Ad
aptive Damping

•
NOTE: Items 2 and 5 are ALWAYS located
on the passenger side of the vehicle
Adaptive damping enhances vehicle handli ng by the use of special dampers which are controlled by a dedicated control
module.
Adaptive damping may be specified as an option on certai n models. Adaptive damping and ride levelling are mutually
exclusive options. The adaptive damping system is completely automatic, requiring no input from the driver.
A d
aptive Dampers
The adaptiv
e dampers:
Are inst

alled in place of the normal dampers.
Can be identified

by the cable and connector at the top of the unit.
Have two settings; fi
rm and so
ft.
It
e
m
De
scr
iption
1Dam
p
er, front right-hand
2Accel
e
rometer, lateral
3Accel
e
rometer,
front vertical
4D
a
mper, rear right-hand
5Adaptive dampin
g control module (A
DCM)
6Accel
e
rometer, rear vertical
7D
amper, rear l
eft-hand
8Dam
p
er, front left-hand

sus
pension components
and for damaged coil springs in the front suspension.
as necessary. For addi tional information,
REF
ER to Section 204
-0
2 Rear Suspension
. I

NSTALL new front suspension components
as necessary. For addi tional information,
REFER to Section 204
-01
Front Suspension
.
Chec

k the rear suspension

for loose or worn
suspension components.
TIGHTE
N or INSTALL new components as
necessary. For additi onal information,
REFER to Section 204
-0
2 Rear Suspension
.
Incorre

ct underbody
alignment.
CHECK
underbody alignment. For additional

information,
REFER to Section 502
-00
Uni
-Body, Subframe and M

ounting System
.
Poor r

eturnability of the
steering
Lower steeri
ng column
interference.
CHECK
the steering co
lumn is free from
interference from the en gine harness, sound
proofing or the floor covering.
Incorrect
tire pressure.
CHECK
and ADJUST the tire pressure. For
additional information,
REFER to Section 204
-0
4 Wheels and Tires
.
Incorrect

tire size or type.
IN
STALL a new tire as necessary. For
additional information,
REFER to Section 204
-0
4 Wheels and Tires
.
Steeri

ng column upper
shroud fouling on the steering wheel.
CHECK
steering column upper shroud for
fouling. ADJUST as necessary.
Steeri
ng column universal
joints binding.
IN
STALL a new steering column. For
additional information,
REFER to Section 211
-0
4 Steering Column
.
Steeri

ng column shaft floor

seal binding.
CHE
CK the steering column shaft floor seal
for correct fitm ent and REFIT as necessary.
Steeri
ng column shaft floor

seal may be torn.
IN
STALL a new steering column shaft floor
seal as necessary.
Bin
ding or damaged tie-
rods.
CHECK
tie-rod end for excessive wear or
tightness in ball joint. INSTALL a new tie- rod end. For additional information,
REFER to Section 211
-0
3 Steering Linkage
.
D

amaged or worn front
suspension components.
I
NSTALL new front suspension components
as necessary. For addi tional information,
REFER to Section 204
-01
Front Suspension
.
Incorre

ct toe adjustment.

AD
JUST as necessary. For additional
information,
REFER to Section 204
-00
Suspension
Sy

stem
- General
Information
.
Excessive steeri

ng efforts
required during low speed
manoeuvring and/or during parking manoeuvres
Low power steer
ing fluid.

CHE
CK steering system
for signs of steering
fluid loss.
BLEE
D the power steering system. For
additional information,
REFER to Section 211
-0
0 Steering System
- General Informati

on
.
Damaged accessory driv

e
belt tensioner.
INST
ALL a new accessory drive belt
tensioner.
Hose or cooler li
ne
restriction.
CHECK
hose or cooler lines for correct
routing.
INST
ALL a new hose as necessary.
Fl

uid aeration.
BLEE
D the system. For additional
information,
REFER to Power Steering System Bleeding

in t
his section.

Steeri
ng transducer not
closed - no feed voltage.
CHECK
the steering transducer circuit. For
additional information, REFER to the wiring diagrams.
Carry ou
t the electrical checks and tests.
For additional information, REFER to the
Electrical Checks and Tests in this section.
Steeri
ng transducer not
closed - cable fault.
CHECK
the steering transducer circuit. For
additional information, REFER to the wiring diagrams.
Carry ou
t the electrical checks and tests.

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.

2. In
stall the access grommet to the housing.
36. Lower the ramp.

37. Ins
tall and tighten the nuts which secure the exhaust manifold to the
downpipe catalyst.

38 . In
stall new seals to the A-Bank VVT bush carrier.
1. Install the new sealing ring (scarf jointed) to the carrier bush groove.
2. Install a new O-ring to the carrier oil-way.

39 . Install the bush c
arrier to the cylinder block.
Lu
br
icate the seal (scarf
jointed) and the bush.
1. Install the bush carrier assembly.
Chec k that
the seals are
in place and that the ri ng dowels are engaged
squarely. Fully locate the assembly as much as possible by hand
pressure.
2. Install the three securing bolts. Tighten to 21 Nm.
40. Install new sealing rings to the coolant outlet pipe grooves.

41. Install the coolant
outlet pipe.
1. Install the outlet pipe to the bypass hose and to the cylinder heads.
2. Install the four bolts which secure the outlet pipe.
42. Connect the hoses and multi-plug to the coolant outlet pipe.
1. Connect the heater hose and reposition the hose clip.

14. Remove the camshaft locking tool 303 - 530.
15. Raise the vehicle on the ramp.
16. Remove the crankshaft setting tool 303 - 531.

17. Refit the crankshaft position sensor.
1. Fit the sensor to the fl ywheel housing and fit the
securing bolt. Tighten to 8 - 12 Nm.
2. Refit the access grommet to the housing.
18. Lower the ramp.

19. Fit new seals to the VVT bush carrier, A-Bank.
1. Fit the new sealing ring ( scarf jointed) to the carrier
bush groove.
2. Fit a new O-ring to the carrier oil-way.

20. NOTE: Lubricate the seal (s carf jointed) and the bush.
Fit the VVT bush carrier to the cylinder block.
1. Fit the bush carrier assembly.
1. Check that the seals are in place and that the ring dowels are engaged squa rely. Fully locate the
assembly as much as possible by hand pressure.
2. Fit the three securing bolts. Tighten to 19 - 23 Nm.
21. Fit new seals to the VVT bush carrier, B-Bank.