Page 501 of 652
17B-26
PETROL INJECTION
Crankshaft position sensor: Removal - Refitting
K4M
17B
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aRemove the engine undertray.
II - REMOVAL OPERATION
aDisconnect the crankshaft position sensor connector
(1) .
aRemove:
-the crankshaft position sensor bolt (2) ,
-the crankshaft position sensor.
REFITTING
I - REFITTING OPERATION
aRefit the crankshaft position sensor.
aConnect the crankshaft position sensor connector.
II - FINAL OPERATION
aRefit the engine undertray.
132445
Page 511 of 652
19A-1
COOLING
Engine cooling system: Specifications
D4F or D7F or K4M or K9K
19A
Vehicles in the current range have cooling systems
with the following basic specifications:
-hermetically-sealed pressurised circuit (with expan-
sion bottle valve),
-circuit using only type « D » fluid,
-passenger compartment heating system equipped
with a « heater matrix » type radiator located under
the dashboard which helps to cool the engine.
Coolant quantities
Special notes:
-protection down to - 25˚C ±± ± ±
2 for cold and temperate
countries,
-protection down to - 40˚C ±± ± ±
2 for "extreme cold" coun-
tries.
Thermostat opening temperaturesEngine Quantity
(litres)Grade
D7F 800 5.5
Only use coolant
GLACEOL RX
(type D) D4F 772 5.5
K9K 740 5.7
D4F 780 5.7
D4F 782 5.7
K4M 854 5.7
Engine Star t o f
opening (˚C)Fully open (˚C)
D7F89 99
D4F89 99 ±± ± ±
2
K9K83 ±± ± ±
395
K4M89 101
Page 512 of 652

19A-2
COOLING
Engine cooling system: Check
19A
Expansion bottle cap valve rating:
I - CHECKING THE COOLING SYSTEM USING THE
TOOL (MOT. 1700)
a1 - Checking the expansion bottle cap valve
aUse the cooling system filling and diagnostic tool
(Mot. 1700). Consult the user's manual for this tool
(see Cooling system filling and diagnostic tool:
Use) (Technical Note 3857A, 19A, Cooling).
2 - Checking the sealing of the cooling circuit
aUse the cooling system filling and diagnostic tool
(Mot. 1700). Consult the user's manual for this tool
(see Cooling system filling and diagnostic tool:
Use) (Technical Note 3857A, 19A, Cooling).
II - CHECKING THE COOLING SYSTEM USING THE
TOOL (MS. 554-07)
a Special tooling required
Mot. 1700Fault finding and filling -
bleeding the cooling circuit.
Ms. 554-07Instr ument for testing the
cooling circuit and the expan-
sion bottle valve. Contains
caps 554-01, 554-04, 554-06
IMPORTANT
When working in the engine compartment, take
care as the radiator fan(s) may start up unexpect-
edly (risk of being cut).
To avoid any risk of serious burns when the engine
is hot:
-do not open the expansion bottle cap,
-do not drain the cooling system,
-do not open the bleed screw(s).
Note:
There are two procedures for checking the cooling
system:
-the procedure using the (Mot. 1700)
-the procedure using the (Ms. 554-07)
Expansion bottle cap with
...Valve rating
... a brown circle1.2 bar
... a yellow marking1.4 bar
... a white marking1.6 bar
... a grey marking1.8 bar
WARNING
If the coolant is leaking from the expansion bottle
cap, replace the valve.
107138
WARNING
If the coolant is leaking from the expansion bottle
cap, replace the valve.
Page 513 of 652
19A-3
COOLING
Engine cooling system: Check
19A
1 - Checking the expansion bottle cap valve
aFit onto the tester (Ms. 554-07), the adapter (Ms.
554-06).
aFit the expansion bottle cap to the adapter (Ms. 554-
06).
aPump with the (Ms. 554-07), the pressure should
stabilise at the expansion bottle cap valve rating with
a test tolerance of ± 0.1 bar.
2 - Checking the sealing of the cooling circuit
aReplace the expansion bottle cap with the adapter
(Ms. 554-01).
aConnect on the adapter (Ms. 554-01) the tool (Ms.
554-07).
aPump with the (Ms. 554-07) to put the cooling circuit
under pressure.
aStop pumping at 0.1 bar below the valve rating for
the expansion bottle cap valve.aGradually unscrew the union of the (Ms. 554-07) to
decompress the cooling system then remove the
adapter (Ms. 554-01) and refit the expansion bottle
cap.
97871
Note:
The pressure should not drop; if it does, look for
the leak.
Note:
The pressure should not drop; if it does, look for
the leak.
Page 514 of 652
19A-4
COOLING
Engine cooling circuit: List and location of components
K4M
19A
132947
(1) Engine
(2) Cooling radiator
(3) Heater matrix
(4) Expansion bottle
(5) Water pump
(6) Thermostat
(7) Bleed screws
(8) Chok e
Page 515 of 652
19A-5
COOLING
Engine cooling system: Operating diagram
D4F, and 772 – D7F
19A
122038
(1) Engine
(2) Radiator
(3) Heater matrix
(4) Expansion bottle
(5) Water pump
(6) Thermostat
(7) Bleed screws
(8) 10 mm restr iction
Note:
The expansion bottle degassing valve rating is 1.4
bar.
Page 516 of 652
19A-6
COOLING
Engine cooling system: Operating diagram
K9K
19A
The expansion bottle valve rating is 1.4 bar.
121816
(1) Engine
(2) Radiator
(3) Expansion bottle
(4) Heater matrix
(5) Cooled EGR
(6) Water pump
(7) Water chamber with integrated
ther mostat
(8) Bleed screw on the water cham-
ber
(9) Bleed screw on the heater
matr ix hose
Page 517 of 652
19A-7
COOLING
Engine cooling system: Operating diagram
D4F, and 780 or 782
19A
122824
(1) Engine
(2) Radiator
(3) Heater matrix
(4) Expansion bottle
(5) Coolant pump
(6) Thermostat
(7) Bleed screws
(8) 10 mm restr iction
(9) Turbocharger
Note:
The rating of the expansion bottle degassing valve
is 1.4 bar.