heating RENAULT KANGOO 1997 KC / 1.G Foult Finding - Injection Workshop Manual

DPCF01 1.0
LUCAS DIESEL INJECTION
Fault finding - Interpretation of XR25 bargraphs13
AFTER REPAIRErase the computer memory (G0**), switch the ignition off, then carry out a road
test.
Finish the operation by checking using the XR25.
Bargraph 8 LH illuminated (co.0) or flashing (cc.1)
Preheating relay N° 1 control circuit
XR25 aid:*08 :co.0 : Open circuit or short circuit to earth
cc.1 : Short circuit to 12 volts
8
Use bornier Elé. 1332 for any operations on the computer connector.NOTES
co.0
Ensure the continuity and insulation in relation to earth of the connection between track 14 on the
computer connector and track B1 on the relay unit connector.
Ensure the presence of + after ignition feed on track A1 on the relay unit connector.
Test the connections on the 2 connectors.
None NOTES
If the fault persists after these tests, replace the relay unit.
If the "preheating relay No. 1 control circuit" fault reappears, replace the computer (consult the "Aid"
section for this operation).
cc.1
Ensure insulation in relation to 12 volts of the connection between track 14 on the computer connector
and track B1 on the relay unit connector.
Test the connections on the 2 connectors.
Even if present at the moment of testing, this fault is still declared
by a flashing BG 8LH side. To confirm its presence and the necessity
of following the fault finding below, erase the computer memory
then start command mode G10*1*.
The fault is present if the bargraph flashes again.
NOTES
If the fault persists after these tests, replace the relay unit.
If the "preheating relay No. 1 control circuit" fault reappears, replace the computer (consult the "Aid"
section for this operation).
Fiche n° 60 1/2
13-20

DPCF01 1.0
LUCAS DIESEL INJECTION
Fault finding - Interpretation of XR25 bargraphs13
AFTER REPAIRErase the computer memory (G0**), switch the ignition off, then carry out a road
test.
Finish the operation by checking using the XR25.
Bargraph 10 RH illuminated (Co.0) or flashing (cc.1)
Preheating warning light circuit
XR25 aid:*30 :cc.0 : Open circuit or short circuit to earth
cc.1 : Short circuit to 12 volts
10Fiche n° 60 1/2
co.0
Check the condition of the preheating warning light bulb then the presence of +after ignition feed at
the warning light.
Ensure the continuity and insulation in relation to earth of the connection between track 9 of the
computer connector and the instrument panel preheating warning light (track 5 on CY connector).
Test the connections on the computer connector.
None NOTES
cc.1
Ensure insulation in relation to 12 volts of the connection between track 9 of the computer connector
and the instrument panel preheating warning light (track 5 on connector CY).
Test at the preheating warning light bulb (bulb in short circuit).
Use bornier Elé. 1332 for any operations on the computer connector.NOTES
Even if present at the moment of testing, this fault is still declared
by a flashing BG 10RH side. To confirm its presence and the necessity
of following the fault finding below, erase the computer memory
then start command mode G21*2*.
The fault is present if the bargraph flashes again.
NOTES
13-23

DPCF01 1.0
LUCAS DIESEL INJECTION
Fault finding - Interpretation of XR25 bargraphs13
AFTER REPAIR
Bargraphs 2 RH and LH sides and bargraph 3 RH side
Solenoid valve control2
None NOTES
These bargraphs visualise the control of the various solenoid valves:
- Advance solenoid valve (bargraph 2 LH side is always illuminated).
- Fast idle solenoid valve .
- EGR solenoid valve.
Fiche n° 60 2/2
3
Ensure the bargraphs operate correctly
Bargraph 4 LH side
Erase stored faults
XR25 aid :BG 4LH is illuminated if command mode G0** to erase the memory
has been used since the last XR25 dialogue began.
4Fiche n° 60 2/2
None
NOTES
Bargraph 4 RH side
Preheating prevented
XR25 aid :BG 4RH is illuminated if command mode G59*1* to prevent control
of the heater plugs has been used since the last XR25 dialogue be-
gan.
4Fiche n° 60 2/2
None
NOTES
13-27

Bargraphs 9 RH and 9 LH side
Air conditioning
XR25 aid :BG 9LH illuminated if AC requested
BG 9RH illuminated if AC authorised
DPCF01 1.0
LUCAS DIESEL INJECTION
Fault finding - Interpretation of XR25 bargraphs13
AFTER REPAIR
Bargraphs 5 and 6 RH and LH sides
Relay control5
None NOTES
These bargraphs visualise the control of the various relays:
- Preheating relay N° 1.
- Preheating relay N° 2 (not used).
- Power assisted steering pump assembly relay (for AC + PAS).
- Altimetric corrector relay.
Fiche n° 60 2/2
6
Ensure the bargraphs operate correctly
9Fiche n° 60 2/2
If
BG 9LH is extinguished when AC is requested, ensure the continuity and insula-
tion of the connection between track 11 of the diesel computer connector and
track 20 of the AC computer connector.
NOTES
Bargraph 10 LH side
Warning light control
XR25 aid :BG 10LH is illuminated if the warning light on the instrument panel
is controlled. This bargraph is normally illuminated; it extinguishes
when the engine is running if there is no fault.
10Fiche n° 60 2/2
None
NOTES
13-28

DPCF01 1.0
LUCAS DIESEL INJECTION
Fault finding - Interpretation of XR25 bargraphs13
AFTER REPAIREnsure the bargraphs operate correctly
Bargraph 10 RH side
Preheating warning light control
XR25 aid :BG 10RH illuminated during the preheating phase
10Fiche n° 60 2/2
None
NOTES
Fiche n° 60 2/2
Bargraph 11 LH side
Load information output
XR25 aid :This bargraph allows visualisation of the emission of the load lever
position information (this information is not used for this applica-
tion). It is permanently illuminated.
11Fiche n° 60 2/2
None
NOTES
Bargraph 11 RH side
Engine speed information output
XR25 aid :This bargraph allows visualisation of the emission of engine speed
information (this information is not used for this application). It is
permanently illuminated.
11Fiche n° 60 2/2
None NOTES
13-29

DPCF01 1.0
LUCAS DIESEL INJECTION
Fault finding - Checking conformity
13
Engine cold, ignition onNOTES
Order of
operationsFunction to check Action Bargraph Display and notes
1 Dialogue with XR25D34
(selector on
S8) 6. dlE
Use fiche n° 60
fault test side
2Interpretation of
normally illuminated
bargraphs Fault test
Code present
3 Change to status test
modeG01* 7. dlE
Use fiche n° 60
status test side
4 Interpretation of
normally illuminated
bargraphs
Code present
Advance corrector fed
Illuminated if command mode
G0** has been used since the
last dialogue took place
Fault warning light fed
Illuminated in preheating
phase
Injection computer may give
load lever position to other
computers (not used)
Injection computer may give
engine speed information to
other computers (not used)
1
1
1
2
11
4
11
10
10
13-32

DPCF01 1.0
LUCAS DIESEL INJECTION
Fault finding - Checking conformity
13
Engine warm at idle speed after at least one operation of the engine cooling fan
assembly (air conditioning not selected).NOTES
Order of
operationsFunction to check Action Bargraph Display and notes
4 Interpretation of
normally illuminated
bargraphs
-
Code present
Advance corrector fed
Illuminated if fast idle solenoid
valve is fed
Illuminated for 40 seconds at
idle speed after starting phase
Illuminated if command mode
G0** has been used since the
last dialogue took place
Illuminated for post heating
Illuminated if altimetric
corrector is fed
Illuminated if vehicle has a PAS
pump assembly
(AC version only)
Injection computer may give
load lever position to other
computers (not used)
Injection computer may give
engine speed information to
other computers (not used)1
2
2
3
4
5
6
6
11
11
13-35

DPCF01 1.0
LUCAS DIESEL INJECTION
Fault finding - Fault charts
13
Carry out a road test then check using the XR25.AFTER REPAIR
If the fault persists, check the fuel supply circuits (for the pump and the injectors).
If necessary, carry out a complete check of the engine (starter drive speed, pump timing, condition of
injectors, rocker arm clearances, compression, .....).NOTES
Chart 4STARTING FAULT (ENGINE WILL NOT START OR IS DIFFICULT TO
START) (warning light extinguished).
Only consult this customer complaint after a complete check using the XR25.
If no fault is shown by the XR25, ensure that the fault is not caused by a faulty immobiliser system.
Check the operation of the preheating system:
Start command mode G10*1* and check for a voltage at the plugs.
If the plugs are not fed, check the connection of the 3 track connector on the relay unit and the condition
of the 70 Amp fuse on the engine connection unit.
13-41

JF5111.0
INJECTION
Fault finding - Status and parameter interpretation17
E7J 780
engine
AFTER REPAIRStart the status and parameter check again from the beginning.
NOTES
DIAG 15
Fiche n° 27
EMISSION OF POLLUTANTS
XR25 aid:None
No fault bargraphs should be illuminated.NOTES
0.97 ≤ λ ≤ 1.03
at 2500 rpm.The oxygen sensor loops correctly at 2500 rpm.
If CO > 0.3 % at 2500 rpm.
NOTES 0.97 ≤ λ ≤ 1.03
at 2500 rpm.The oxygen sensor does not loop correctly at 2500 rpm.
There is a fault with the injection or the sensor.
The catalytic converter is faulty.
NOTE : it is vital to determine the cause of the catalytic converter damage to
avoid a new converter also being damaged.
If λ < 0.97 or λ > 1.03 at idle speed
Check the sensor earth and heating.
Check there is no air leak at the manifold.
17-50

JF5111.0
INJECTION
Fault finding -Aid
17
E7J 780
engine
For further details, refer to section 12
Injector resistance = 14.5 Ω
Idle regulation stepping
motor resistance : A - D = 52 Ω
B - C = 52 Ω
Canister bleed valve resistance = 35 Ω
Ignition coil resistance : Primary = 1-3 ; 2-3 = 1 Ω
1-2 = 0.5 Ω
Secondary = 10 kΩ
Oxygen sensor heating resistance = 3 to 15 Ω
Throttle potentiometer resistance : no load 1-2 = 5440 Ωfull load 1-2 = 2200 Ω
1-3 = 4500 Ω1-3 = 4460 Ω
2-3 = 2160 Ω2-3 = 5340 Ω
Flywheel signal resistance = 220 Ω
Fuel pressure = 3 bars ignition on/ 2.5 bars at idle speed
Value for: CO = 0.3 % maximum
HC = 100 ppm maximum
CO2 = 14.5 % minimum
Lambda = 0.97 < λ < 1.03
Sensor resistance
Temperature in °C 0 20 40 80 90
Air temperature sensor
Resistance in ohms7470
to
119703060
to
40451315
to
1600--
Coolant temperature sensor
Resistance in ohms6700
to
80002600
to
30001100
to
1300270
to
300200
to
215
17-62