LAND ROVER DISCOVERY 2002 Workshop Manual

ENGINE MANAGEMENT SYSTEM - V8
18-2-74 REPAIRS
5.Disconnect multiplug from ECT sensor.
6.Remove sensor from inlet manifold and discard
sealing washer.
Refit
1.Clean sealant from threads in manifold.
2.Apply Loctite 577 to sensor threads.
3.Fit new sealing washer to ECT sensor and
tighten sensor to 10 Nm (7 lbf.ft).
4.Connect multiplug to ECT sensor.
5.Position alternator, fit bolts and tighten to 45
Nm (33 lbf.ft).
6.Fit auxiliary drive belt.

+ CHARGING AND STARTING,
REPAIRS, Belt - auxiliary drive.
7.Top up cooling system.
8.Connect battery earth lead.
9.Fit battery cover and secure with fixings.
Sensor - crankshaft position (CKP)
$% 18.30.12
Remove
1.Release fixings and remove battery cover.
2.Disconnect battery earth lead.
3.Raise front of vehicle.
WARNING: Do not work on or under a
vehicle supported only by a jack. Always
support the vehicle on safety stands.
4.Release fixings and remove underbelly panel.
5.Release CKP sensor multiplug from bracket.
6.Remove 2 bolts securing CKP sensor heat
shield and position aside.
7.Remove 2 nuts securing CKP sensor, remove
2 spacers, CKP sensor and sensor mounting.
8.Disconnect CKP sensor multiplug from engine
harness.
Refit
1.Ensure all components are clean.
2.Connect CKP sensor multiplug to engine
harness.
3.Fit sensor mounting, CKP sensor, 2 spacers
and tighten CKP sensor retaining nuts to 6 Nm
(5 lbf.ft).

ENGINE MANAGEMENT SYSTEM - V8
REPAIRS 18-2-75
4.Fit CKP sensor heat shield and secure with
bolts.
5.Fit underbelly panel and secure with fixings.
6.Remove stand(s) and lower vehicle.
7.Connect battery earth lead.
8.Fit battery cover and secure the fixings.
9.Reset adaptions using TestBook.
Sensor - radiator temperature
$% 18.30.20
Remove
1.Disconnect battery earth lead.
2.Position container to collect coolant spillage.
3.Disconnect multiplug from sensor.
4.Remove sensor and discard sealing washer.
Refit
1.Fit new sealing washer to sensor.
2.Fit and tighten sensor.
3.Connect multiplug to sensor.
4.Refill cooling system.
5.Connect battery earth lead.

ENGINE MANAGEMENT SYSTEM - V8
18-2-76 REPAIRS
Sensor - camshaft position (CMP)
$% 18.30.24
Remove
1.Release fixings and remove battery cover.
2.Disconnect battery earth lead.
3.Raise front of vehicle.
WARNING: Do not work on or under a
vehicle supported only by a jack. Always
support the vehicle on safety stands.
4.Release fixings and remove underbelly panel.
5.Remove engine oil filter.

+ ENGINE - V8, REPAIRS, Filter - oil.
6.Disconnect engine harness from CMP sensor
and release CMP sensor multiplug from
bracket.
7.Remove bolt from clamp securing CMP sensor
to timing gear cover.
8.Remove clamp and CMP sensor. Discard 'O'
ring from CMP sensor.
Refit
1.Ensure CMP sensor is clean, fit new 'O' ring
and sensor to cover.
2.Fit clamp to CMP sensor and tighten bolt to 8
Nm (6 lbf.ft).
3.Fit sensor multiplug to bracket and connect
engine harness to multiplug.
4.Fit engine oil filter.

+ ENGINE - V8, REPAIRS, Filter - oil.
5.Fit underbelly panel and secure with fixings.
6.Lower vehicle and connect battery earth lead.
7.Fit battery cover and secure with fixings.
Knock sensor (KS)
$% 18.30.28
Remove
1.Release fixings and remove battery cover.
2.Disconnect battery earth lead.
3.Raise front of vehicle.
WARNING: Do not work on or under a
vehicle supported only by a jack. Always
support the vehicle on safety stands.
4.Remove fixings securing underbelly panel and
remove panel.
5.Disconnect multiplug from KS.
6.Remove nut securing KS to cylinder block and
remove KS.
Refit
1.Clean mating faces of KS and cylinder block.
2.Fit KS to cylinder block and tighten nut to 22
Nm (16 lbf.ft).
3.Connect multiplug to KS.
4.Fit underbelly panel and secure with fixings.
5.Remove stand(s) and lower vehicle.
6.Connect battery earth lead.
7.Fit battery cover and secure the fixings.

ENGINE MANAGEMENT SYSTEM - V8
REPAIRS 18-2-77
Air cleaner assembly
$% 19.10.01
Remove
1.Remove 2 nuts securing air intake ducting.
2.Remove both parts of air intake ducting.
3.Release 2 clips securing MAF sensor, release
2 clips securing air intake hose.
Note: Pre 03 MY air intake hose illustrated.
4.Release air intake hose and position aside. 5.Remove and discard MAF sensor 'O' ring.
6.Release air cleaner assembly from 3
grommets and remove assembly.
Refit
1.Position air cleaner assembly and secure in
grommets.
2.Fit new 'O' ring to MAF sensor.
3.Position air intake hose, secure MAF sensor
clips and tighten intake hose clips.
CAUTION: Ensure MAF sensor 'O' ring is
not displaced during fitting.
4.Fit air intake ducting and secure with nuts.

ENGINE MANAGEMENT SYSTEM - V8
18-2-78 REPAIRS
Element - air filter
$% 19.10.10
Remove
1.Release 2 clips and disconnect MAF sensor
from air filter cover, remove and discard 'O'
ring.
2.Release 2 clips and remove cover from air
filter.
3.Remove air filter element.
Refit
1.Clean air filter body and cover.
2.Fit new air filter element.
3.Position air cleaner cover and secure clips.
CAUTION: Ensure clips are correctly
located on cover.
4.Fit a new MAF sensor 'O' ring, position MAF
sensor and secure clips.
CAUTION: Ensure 'O' ring is not displaced
during fitting.
Cable - throttle
$% 19.20.06
Remove
1.Release 3 fasteners and remove drivers side
closing panel and move aside.
2.Release inner cable from throttle pedal.
3.Release outer cable from bulkhead.

ENGINE MANAGEMENT SYSTEM - V8
REPAIRS 18-2-79
4.Release outer cable from clip, loosen lock nuts
and remove outer cable from abutment
bracket.
5.Release inner cable from operating lever and
remove cable.
Refit
1.Position cable, secure to bulkhead and
connect inner cable to throttle pedal.
2.Position inner cable to operating lever and
connect outer cable to abutment bracket and
retaining clip.
3.Position closing panel and secure fasteners.
4.Adjust throttle cable.

+ ENGINE MANAGEMENT SYSTEM -
V8, ADJUSTMENTS, Cable - throttle.
Sensor - Mass Air Flow (MAF)
$% 19.22.25
Remove
1.Disconnect multiplug from MAF sensor.
2.Loosen clip and release air intake hose from
MAF sensor.
Note: Pre 03 MY air intake hose illustrated.
3.Release 2 clips and remove MAF sensor from
air cleaner, remove and discard 'O' ring.
Refit
1.Fit new MAF sensor 'O' ring, position MAF
sensor to air cleaner and secure with clips.
CAUTION: Ensure 'O' ring is not displaced
during fitting.
2.Position air intake hose to MAF sensor and
secure with clip.
3.Connect multiplug to MAF sensor.

ENGINE MANAGEMENT SYSTEM - V8
18-2-80 REPAIRS
Throttle Body
$% 19.22.45
Remove
1.Loosen 3 clips securing air intake hose, release
air intake hose and position aside.
Note: Pre 03 MY air intake hose illustrated.
2.Disconnect throttle and cruise control cables
from throttle body. 3.Loosen clip securing breather hose and release
hose.
4.Disconnect multiplug from throttle body.
5.Position a container below the throttle body to
collect coolant spillage.
6.Loosen 2 clips securing coolant hoses to
throttle body and release hoses.
7.Remove 4 bolts securing throttle body to
plenum chamber.
8.Remove throttle body and discard gasket.
Refit
1.Clean plenum chamber and throttle body
mating faces.
2.Using a new gasket, position throttle body, fit
bolts and tighten to 9 Nm (7 lbf.ft).
3.Connect coolant hoses to throttle body and
secure clips.
4.Connect breather hose to throttle body and
secure clip.
M19 2576A
1

ENGINE MANAGEMENT SYSTEM - V8
REPAIRS 18-2-81
5.Connect multiplug to throttle body.
6.Connect throttle and cruise control cables.
l

+ ENGINE MANAGEMENT SYSTEM
- V8, ADJUSTMENTS, Cable - cruise
control.
l

+ ENGINE MANAGEMENT SYSTEM
- V8, ADJUSTMENTS, Cable - throttle.
7.Position air intake hose and secure clips.
8.Top-up cooling system.
Plenum chamber
$% 19.22.46
Remove
1.Remove upper manifold gasket.

+ MANIFOLDS AND EXHAUST
SYSTEMS - V8, REPAIRS, Gasket - inlet
manifold - upper - Without Secondary Air
Injection.
2.Remove 2 bolts securing throttle cable
abutment bracket and remove bracket.
3.Remove breather hose adaptor.
4.Remove 4 bolts securing plenum chamber to
upper manifold and remove plenum chamber.
5.Collect plenum chamber gaskets.
Refit
1.Clean plenum chamber and upper manifold
mating faces.
2.Using new gaskets, position plenum chamber
fit bolts and tighten to 22 Nm (16 lbf.ft).
3.Fit breather adaptor and tighten to 6 Nm (4.4
lbf.ft).
4.Position throttle cable abutment bracket, fit
bolts and tighten to 9 Nm (7 lbf.ft).
5.Fit upper manifold gasket.

+ MANIFOLDS AND EXHAUST
SYSTEMS - V8, REPAIRS, Gasket - inlet
manifold - upper - Without Secondary Air
Injection.

ENGINE MANAGEMENT SYSTEM - V8
18-2-82 REPAIRS
Sensor - throttle position (TP)
$% 19.22.49
Remove
1.Disconnect multiplug from TP sensor.
2.Remove 2 screws securing TP sensor to
throttle body.
3.Remove TP sensor and discard 'O' ring.
Refit
1.Clean TP sensor and throttle body mating
faces.
2.Using a new 'O' ring, position TP sensor. Fit
screws and tighten to 2.2 Nm (1.6 lbf.ft).
3.Connect multiplug to TP sensor.
Valve - idle air control (IACV)
$% 19.22.54
Remove
1.Disconnect multiplug from IACV.
2.Loosen 2 clips securing air hoses and release
hoses.
3.Remove 2 screws securing IACV to inlet
manifold.
4.Collect clamps and remove IACV.
Refit
1.Position IACV to inlet manifold, locate clamps,
fit screws and tighten to 8 Nm (6 lbf.ft).
2.Position air hoses to IACV and secure clips.
3.Connect multiplug to IACV.

ENGINE MANAGEMENT SYSTEM - V8
REPAIRS 18-2-83
Injectors
$% 19.60.12
Remove
1.Remove upper manifold.

+ MANIFOLDS AND EXHAUST
SYSTEMS - V8, REPAIRS, Gasket - inlet
manifold - upper - Without Secondary Air
Injection.
2.Carefully manoeuvre ignition coil assembly
from between inlet manifold and bulkhead.
3.Position absorbent cloth beneath fuel pipe to
catch spillage.
4.Disconnect fuel feed hose from fuel rail
CAUTION: Always fit plugs to open
connections to prevent contamination.
5.Release injector harness from fuel rail and
disconnect injector multiplugs. 6.Remove 4 bolts securing fuel rail to inlet
manifold.
7.Release injectors from inlet manifold and
remove fuel rail and injectors.
8.Release spring clips securing injectors to fuel
rail and remove fuel injectors.
9.Remove and discard 2 'O' rings from each
injector.
10.Fit protective caps to each end of injectors.
Refit
1.Clean injectors and recesses in fuel rail and
inlet manifold.
2.Lubricate new 'O' rings with silicone grease
and fit to each end of injectors.
3.Fit injectors to fuel rail and secure with spring
clips.
4.Position fuel rail assembly and push-fit each
injector into inlet manifold.