Page 50 of 1007

GENERAL INFORMATION
03-19
Electrical precautions
General
The following guidelines are intended to ensure the 
safety of the operator and ensure the prevention of 
damage to the electrical and electronic components 
fitted to the vehicle. Where necessary, specific 
precautions are detailed in the individual procedures 
of this manual.
Equipment
Prior to commencing any test procedure on the 
vehicle, ensure that the relevant test equipment is 
working correctly and any harness or connectors are 
in good condition. It is particularly important to check 
the condition of the lead and plugs of mains operated 
equipment.
Polarity
Never reverse connect the vehicle battery and 
always ensure the correct polarity when connecting 
test equipment.
High Voltage Circuits
Whenever disconnecting live ht circuits, always use 
insulated pliers and never allow the open end of the 
ht lead to contact other components, particularly 
ECU's.
Exercise caution when measuring the voltage on the 
coil terminals while the engine is running, high 
voltage spikes can occur on these terminals.
Connectors and harnesses 
The engine compartment of a vehicle is a particularly 
hostile environment for electrical components and 
connectors:
lAlways ensure electrically related items are dry 
and oil free before disconnecting and 
connecting test equipment.
lEnsure disconnected multiplugs and sensors 
are protected from being contaminated with oil, 
coolant or other solutions. Contamination could 
impair performance or result in catastrophic 
failure.
lNever force connectors apart using tools to 
prise apart or by pulling on  the wiring harness.
lAlways ensure locking tabs are disengaged 
before disconnection, and match orientation to 
enable correct reconnection.
lEnsure that any protection (covers, insulation 
etc.) is replaced if disturbed.Having confirmed a component to be faulty:
lSwitch off the ignition and disconnect the 
battery.
lRemove the component and support the 
disconnected harness.
lWhen replacing the component, keep oily hands 
away from electrical connection areas and push 
connectors home until any locking tabs fully 
engage.
Battery disconnection
Before disconnecting the battery, disable the alarm 
system and switch off all electrical equipment. If the 
radio is to be serviced, ensure the security code has 
been deactivated.
CAUTION: To prevent damage to electrical 
components, always disconnect the battery 
when working on the vehicle's electrical system. 
The ground lead must be disconnected first and 
reconnected last.
CAUTION: Always ensure that battery leads are 
routed correctly and are not close to any 
potential chafing points.
Battery charging
Only recharge the battery with it removed from the 
vehicle. Always ensure any battery charging area is 
well ventilated and that every  precaution is taken to 
avoid naked flames and sparks.
Ignition system safety precautions
The vehicle's ignition system produces high voltages 
and the following precautions should be observed 
before carrying out any work on the system:
WARNING: Before commencing work on an 
ignition system, ensure all high tension 
terminals, adapters and diagnostic equipment 
are adequately insulated and shielded to prevent 
accidental personal contacts and minimise the 
risk of shock. Wearers of surgically implanted 
pacemaker devices should not be in close 
proximity of ignition circuits or diagnostic 
equipment. 
         
        
        
     
        
        Page 160 of 1007
MAINTENANCE
MAINTENANCE 10-13
Vent filter - turbocharger boost control 
solenoid valve - Td4
Replace
1.Replace turbocharger solenoid valve vent filter. 
 
 +   FUEL DELIVERY SYSTEM - DIESEL, 
REPAIRS, Vent filter - turbocharger boost 
control solenoid valve - Td4.
Spark Plugs – K1.8
Check & Renew
1.Check spark plugs condition and gap. Renew if 
necessary.
 
 +  ENGINE MANAGEMENT SYSTEM - 
MEMS, REPAIRS, Spark plugs.
Spark Plugs – KV6
Check & Renew
1.Check spark plugs condition and gap. Renew if 
necessary.
 
 +  ENGINE MANAGEMENT SYSTEM - 
SIEMENS, REPAIRS, Spark plugs - up to 
03MY.
Air Cleaner – Petrol Models
Replace
1.Replace air cleaner element.
 
 +  FUEL DELIVERY SYSTEM - 
PETROL, REPAIRS, Element - air cleaner - 
KV6.
Clean
1.Clean the drain hole in filter casing. 
         
        
        
     
        
        Page 192 of 1007

ENGINE - K SERIES KV6
REPAIRS 12-3-15
Refit
1.Clean cylinder head mating face.
CAUTION: Use suitable gasket removal 
spray and a plastic scraper.
2.Remove bolts securing cylinder liner clamps 
LRT-12-144 to cylinder block and remove 
clamps.
CAUTION: Do not rotate crankshaft.
3.Clean cylinder block face and dowel holes.
4.Clean cylinder head bolts and wipe dry.
5.Lightly lubricate threads and beneath heads of 
cylinder head bolts with clean engine oil.
6.Check that fitted height of dowels is between 10 
to 11 mm (0.40 to 0.43 in) above cylinder block 
top face. Replace dowels if fitted height is 
incorrect.
7.Fit new cylinder head gasket onto cylinder 
block with the word 'TOP' uppermost.
8.With assistance, fit cylinder head and carefully 
position LH inlet to RH inlet manifold.
9.Carefully enter cylinder head bolts, DO NOT 
DROP. Screw bolts into place by hand.10.Tighten cylinder head bolts progressively in the 
sequence shown to : 
lStage 1 - 25 Nm (18 lbf.ft)
lStage 2 - Tighten in the same sequence to 
25 Nm (18 lbf.ft)
lStage 3 -Tighten in the same sequence to 
25 Nm (18 lbf.ft)
lStage 4 - Using an angle torque gauge, 
tighten bolts in the same sequence a further 
180°
11.Fit LH camshaft cover gasket.
 
 +   ENGINE - K SERIES KV6, REPAIRS, 
Camshaft cover gasket - LH - Up to 03MY.
12.Remove and discard 'O' rings from injectors.
13.Clean injectors and injector locations in fuel rail.
14.Lubricate new 'O' rings with castor oil and fit to 
injectors.
15.Position fuel rail assembly and secure injectors 
to inlet manifolds.
16.Position injector protection cover - if fitted to RH 
fuel rail and secure injector harness to 
protection cover or fuel rail with clips.
17.Fit bolts securing fuel rail to inlet manifolds and 
tighten to 9 Nm (7 lbf.ft).
18.Position CMP sensor bracket, fit and tighten 
bolt to 9 Nm (7 lbf.ft).
19.Connect CMP sensor multiplug and secure to 
bracket.
20.Connect breather hose to LH inlet manifold.
21.Connect coolant bleed hose to inlet manifold 
and secure with clip.
22.Position ignition coils to LH inlet manifold.
23.Position earth lead, fit nuts and bolts securing 
ignition coils to LH inlet manifold and tighten to 
9 Nm (7 lbf.ft).
24.Position ht lead guide bracket, fit and tighten 
special bolt.
25.Connect ht leads to spark plugs and secure ht 
leads in guide clips.
26.Clean camshaft timing belt cover backplate 
bolts and apply sealant, Part No. STC 50552 to 
the first 3 threads.