1997 RENAULT KANGOO Engine And Peripherals Workshop Manual

DIESEL EQUIPMENT
Fast idle speed LDA
13
REFITTING AND ADJUSTING THE LDA
Fit the LDA (1) on the rear fitting of the injection
pump (2).
Clip the retaining clip (3) onto the LDA.
13043R
Fit the cable stop (4) on the cable.
Position the cable grip on the cable; the
dimension X must be 2 mm ± 1. Tighten the
cable grip nut.
13044R
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DIESEL EQUIPMENT
Coded solenoid valve
13
10713R1 10314R3
10315R2
99780-1R
13-26

DIESEL EQUIPMENT
Coded solenoid valve
13
On this type of vehicle, the replacement of the
solenoid valve and of the coded electronic unit (A)
requires the removal of the injection pump from
the engine.
REMOVAL
With the pump on the bench, remove the protec-
tive fittings at (B).
These are secured by shear bolts which may be re-
moved either :
- using a small cold chisel or a punch and hitting
on the conical heads of bolts (C), (D) and (E)
to loosen them,
- using tool Mot. 1372 for bolt (F), drilling it
using the 4 mm diameter drill (drilling depth
approximately 4 mm) and the large diameter
drilling guide tube on the fitting side (2).
Use extractor (3) and its handle to remove it .
REFITTING
Tighten the fuel cut off solenoid valve to a torque
of 2 daN.m.
Refit a heat shrink cover on the fuel cut off sole-
noid, ensuring the wiring is correctly routed.
Refit the fittings using shear bolts and observing
their location and that of the spacers,
(depending on fitting).
IMPORTANT : using a torque wrench, tighten the
bolts, then remove the bolt heads by bending
them using a tube inserted in the bolt heads.
Location of bolts :
D :
∅ 5 x 25 mm ; torque =0.55 daN.m
C and F :
∅ 6 x 40 mm ; torque =1.2 daN.m
E :
∅ 5 x 33 mm ; torque =0.55 daN.m
Refit the cable of the fast idle speed LDA and
tighten the cable grip, leaving 2 mm play.
Refit the injection pump on the engine.
13-27

DIESEL EQUIPMENT
Load potentiometer
13
In the factory, vehicles are programmed with the full load position. (memorising the voltage delivered by the
potentiometer in the full load position). This value is used to adjust the load potentiometer after it has been
replaced. It is therefore essential, if the diesel injection computer has to be replaced during the vehicle’s li-
fetime , to carry out this programming (G31*).
If it is necessary to replace the load potentiometer, in order to adjust it we compare the voltage delivered by
the potentiometer in full load position, with the value memorised. The new potentiometer is said to be cor-
rectly adjusted when the two voltages are equal. This is displayed on the
XR25. G32* indicates the diffe-
rence in voltage between the value memorised and the one from the potentiometer. The adjustment is cor-
rect if this value is equal to 0 in the full load position.
The potentiometer and the computer cannot be replaced at the same time (if necessary, replace the poten-
tiometer first and then the computer).
REPLACEMENT OF THE LOAD POTENTIOMETER (operation to be carried out by two people)
Remove the three terminals for the load potentiometer from the 10 track pump connector (see method
described in section 13 "Advance solenoid valve").
Remove the two bolts mounting the faulty potentiometer, extract this, and fit the new potentiometer .
Hand tighten the two bolts mounting the potentiometer but do not lock them - it should be possible to turn
the potentiometer body .
Connect the
XR25, and switch on the ignition.
Set the selector to S8.
Enter code
Press down on the accelerator pedal (full load position). Do not act directly on the load lever.
Holding the full load position, turn the potentiometer body until the value 0 appears on the XR25 display (if
you are too far from the 0 value, the screen will display HL , which means "Hors Limite"= "Off limits". Just
to turn the potentiometer body to obtain the display of a decimal value).
Tighten the two bolts mounting the potentiometer in the full load position, when the value read is 0. D
34then
G32*
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DIESEL EQUIPMENT
Computer configuration
13
PROGRAMMING THE FULL LOAD POSITION
Switch the ignition off.
Replace the computer.
Carry out the programming of the full load position; in order to do this :
Switch the ignition on.
Connect the
XR25.
Set the selector to S8.
Enter code
Enter code
When the display flashes "PF", press the accelerator pedal down as far as it will go.
The programming is complete when
the screen displays the following
wording: D
34
G31*
Bargraph N.12 on the right hand side should now be extinguished.
Switch the ignition off.
DPCN LUCAS injection computers are configured before sale to "with air conditioning". If the vehicle is not
fitted with an air conditioning system, use command G50*4* on the
XR25 to carry out the "no air conditio-
ning " programming.
DPCN LUCAS "injection computers are configured before sale to "with power assisted steering " (power as-
sisted steering with pump assembly). If the vehicle is not fitted with a power assisted steering pump as-
sembly, use command G50*9* on the
XR25 to carry out the "no power assisted steering pump assembly"
programming.then
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DIESEL EQUIPMENT
Computer configuration
13
COMPUTER CONFIGURATION IN RELATION TO AIR CONDITIONING.
For vehicles equipped with air conditioning , enter G50*3* on the XR25
For vehicles without air conditioning , enter G50*4* on the XR25 .
COMPUTER CONFIGURATION IN RELATION TO THE PAS (POWER ASSISTED STEERING PUMP ASSEMBLY)
The vehicle may have two types of PAS assembly :
-a
PAS assembly including a high pressure pump driven by a belt. In this case, the computer must be
configured without PAS : enter G50*9* on the
XR25,
-a
PAS assembly with a pump assembly which is driven electrically and controlled by the injection compu-
ter. ( this type of
PAS is fitted in all vehicles which are also equipped with AC). In this case, the computer
must be configured with PAS : enter G50*8* on the XR25.
IMPORTANT : according to the above explanations, only two types of combination are possible for the illumi-
nation of bargraphs 18 and 19.
Vehicle with AC
and PAS pump assemblyVehicle without AC and PAS pump assembly
(with conventional PAS)
18
19
18
19
DA CA
NOTE : if the computer has been replaced, remember to carry out the programming of the load potentio-
meter full load position (see "Load potentiometer " section ).
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DIESEL EQUIPMENT
Injector with sensor (needle lift)
13
10579R1
PRM1315
The needle lift sensor is integrated to the injector
holder (cylinder n° 3). Its function is to transmit
the movements of the injector needle to the
computer. This allows the start of injection to be
deduced. The computer processes this informa-
tion and uses it to compare the advance reques-
ted to the advance corrector on the pump to the
advance actually applied . In this way, the system
works as a closed loop.
Tooling required for the removal of the injector :
Mot. 997-01.
Tightening torque: 7 daN.m.
NOTE : it is possible to modify tool Mot. 997 by
milling the socket at (A), through which passes
the connector of the injector with sensor (B).1 Plunger rod
2 Spacer
3 Injector
4 Spring
5 Winding
13-31

DIESEL EQUIPMENT
Injection warning light
13
OPERATING PRINCIPLE OF THE DIESEL INJECTION WARNING LIGHT ON THE INSTRUMENT PANEL
On switching on the ignition, the diesel injection fault warning light is illuminated. It extinguishes as the en-
gine begins to run.
•Fault in a component of the injection assembly
Faults in the following components may cause the warning light to illuminate :
- injector with sensor
- advance solenoid valve,
- engine speed sensor ,
- load lever potentiometer,
- pre-postheating (according to version).
13-32