Page 935 of 2490

Pinpoint test
A: P0116, P0125
Connector
loose or corroded
*
D
TC P0118 ECT circuit high input
Sensor short
Harness open circui
t
Harness short
Connector loose or corroded
*
*
*
*
GO to Pinpoint
Test C
*
D
TC P1474 Intercooler coolant pump relay malfunction
Intercooler pump relay
failure
Intercooler pump relay to ECM drive circuit
fault Intercooler pump relay coil ground circuit
fault Harness fault
Connector loose or corroded
Connector pins(s) bent or tracking between
connections ECM power supply fault
*
*
*
*
*
*
*
GO to Pinpoint
Test D
*
P
INPOINT TEST A : P0116, P0125
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.
Conne
ct the scan tool
1
Have the DTC(s) and fr
eeze
frame data been recorded?
Yes GO to A2
A2: ENGINE
COOLANT SYSTEM CHECK
•
NOTE: Do not use the instrument display, if th
e ECT has failed this will not operate correctly.
Chec
k engine temperature rise using a thermocouple or
similar device.
1
Engine
temperature increasing?
Yes GO to A3
No Check coolant level
Check coolant for contamination
Check/test thermostat
Page 953 of 2490
Engine Cooling - Cooling System Draining,
Filling and Bleeding4.0L NA V8
- AJ27/3.2L NA V8 - AJ26
Gen
eral Procedures
Drain
Refill
1. O
pen the engine compartment and fit paintwork protection
sheets.
2. Ensure that the cooling system is cool and very carefully,
remove the pressure cap from the header tank.
3. Raise the vehicle.
4. Drain th
e coolant.
Pla
ce a coolant drain tray on
the floor, below the radiator
drain plug.
1. Remove the radiator drain plug. and allow the coolant to drain.
5. Fit a new seal to the
drain plug.
1. Remove the seal from the drain plug. and clean the plug face.
Fit a new seal.
6. Re
fit the radiator drain plug.
Cl
ean any coolant from the
underside of the vehicle.
Remove the drain tray.
7. Lower the vehicle.
1. Refill the cooling system with a 50% solution of water and
Jaguar Antifreeze / Corrosion Inhibitor ESD-M97B49-A.
1. Fill the cooling system at the header tank until the level stabilises at the top of the breather neck.
Page 956 of 2490

• NOTE
: To ensure that
air is not drawn into the system during the following operations:
Do
not remove the cap from the header tank whilst the
charge air cooling system is open to atmosphere.
Do
not switch on the ignition when th
e charge air cooling system is open to atmosphere because the electrical
cooling pump may draw air into the system.
2. Fi
ll the cooling system at the header tank until the
level stabilises near the to p of the charge air cooler
fill point. This will take some time, as air is being
purged from the system.
Ensure that the head
er tank is full.
2. Fit the pressure cap to the header tank.
3. Pour coolant careful l
y into the charge air cooler fill point until
the system is full.
Fi t t
he plug and washer to the fill point.
4. Remove the pressure cap from the header tank.
5. Switch on the ignition and switch off the climate control
system.
Le ave
the ignition switched on (do not start the engine)
for at least 2 minutes to allow the air charge cooler
electric water pump to oper ate and to purge any air from
the air charge cooler radiator to the header tank. (This
operation will be repeated later)
6. Switch off the ignition for at least 1 minute.
7. Leave the ignition switched on (do not start the engine) for at
least 2 minutes to allow the air charge cooler electric water
pump to operate and to purg e any air from the air charge
cooler radiator to the header tank.
8. Top up the cooling system.
1. Top up the header tank and fit the pressure cap.
2. Remove the plug from the air charge cooler fill point. Pour coolant carefully into the air charge cooler fill
point until the system is full.
3. Fit the plug and washer to the fill point.
Page 963 of 2490

Engine Cooling - Coolant Expansi
on Tank
Re
moval and Installation
Remov
al
1.
O
pen the engine compartment and fit paintwork protection
sheets.
2. R
emove the centre trim panel
from the engine compartment.
1. Remove the left hand side enclosure panel.
2. Remove the centre trim panel.
3. Ensure that the cooling system is cool and very carefully,
remove the pressure cap.
4. Place a cloth under the expansion tank to absorb any spillage
caused by disconnecting the hoses.
5. R
elease the hoses (Quick Fit connections) from the expansion
tank.
1. Release the hose, expansion tank to thermostat housing (coolant outlet pipe on supercharged
engines).
2. Release the hose, expansion tank to recovery tank.
3. Release the hose, expansion tank to radiator..
6. Fit blanking plugs to the pipes and the tank.
7. Re
move the expansion tank from the mounting.
1. Disconnect the coolant level sensor connector.
2. Remove the nuts which secures the tank.
8. Remove the expansion tank from the vehicle.
1. Use a pipe clamp to clam p the bottom hose branch.
2. Release the pipe clip an d move it along the pipe.
3. Disconnect the tank from the bottom hose and
Page 964 of 2490
In
stallation
re
move it from the vehicle.
9. Empty any surplus coolant from the expansion tank into a
drain tray.
10. Remove the cloth from the engine and clean any spillage from
the engine bay.
11 . R
emove the coolant level sensor
by carefully levering it
downwards at one side.
1. Installation is th e reverse of the re moval procedure.
Page 972 of 2490
Engine Cooling - Engine Coolant Level Switch
Remo
val and Installation
Remov
a
l
Installation
1.
Op
en the engine compartment and fit paintwork protection
sheets.
2. Remove the expansion tank; refe r to Operation (26.15.01.) in
this section.
3. Re
move the coolant level probe.
1. Use a lever to release the probe from the expansion tank and remove it.
4. Clean the expansion tank probe aperture.
1. Installation is th e reverse of the re moval procedure.
Page 978 of 2490
10. F
it the radiator top securing panel.
1. Position and align th e top securing panel.
2. Fit the eight securing bolts to the panel.
11. Tigh
ten the ten bolts which secu
re the radiator top panel.
12. Connect
the radiator coolant bottom hose.
1. Reposition and connect the bottom hose to the radiator.
2. Reposition the hose clip.
13. Fit the twin fan and motor assembly. Refer to Operation
26.25.12 in this section.
14. Remove the temporary wooden support strut and reconnect
the gas struts to the engine compartment cover.
15. Check the level and replenish the transmission fluid as
necessary. Refer to Section 307 for the recommended
procedure.
Page 985 of 2490
10
.
Fit the radiator top securing panel.
1. Position and align th e top securing panel.
2. Fit the eight securing bolts to the panel.
11
.
Tighten the ten bolts which secu re the radiator top panel.
12
.
Connect the radiator coolant bottom hose.
1. Reposition and connect the bottom hose to the radiator.
2. Reposition the hose clip.
13. Fit the twin fan and motor assembly. Refer to Operation
26.25.12 in this section.
14. Remove the temporary wooden support strut and reconnect
the gas struts to the engine compartment cover.
15. Check the level and replenish the transmission fluid as
necessary. Refer to Section 307 for the recommended
procedure.