check engine light RENAULT KANGOO 1997 KC / 1.G Foult Finding - Injection Workshop Manual

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 - Customer complaints
13
Only consult these customer complaints after a complete check using the XR25.NOTES
No dialogue from the computer to the XR25.
Idle speed too high (when air conditioning not requested)
No fast idle when air conditioning requested
Starting fault (engine will not start or is difficult to start).
Warning light illuminates with no fault shown by the XR25.
Vehicle produces black smoke at altitude
Chart 1
Chart 2
Chart 3
Chart 4
Chart 5
Chart 6
13-37

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 checks
17
E7J 780
engine
Engine stopped, ignition on.NOTES
Order of
operationsFunction to be
checkedAction Bargraph Display and notes Fault finding
6Throttle
position
potentiometer
.No load
# 17
Accelerator
pedal
slightly
depressed
Full load
# 1716 < X < 50
185 < X < 243
DIAG 2
7Pressure sensor
# 01X =Atmospheric pressureDIAG 9
8Coolant
temperature
sensor# 02X = Engine temperature
± 5 °CDIAG 3
9Air
temperature
sensor# 03X = Temperature under
bonnet ± 5 °CDIAG 4
10 Fan assemblyG17*Fan must operateDIAG 17
11Fault warning
lightSwitch
ignition onFault warning light must
illuminate then
extinguishDIAG 19
2
2
2
17-31

Connect the bornier in place of the computer and check the insulation and continuity of the line:
Computer 43 6 Instrument panel
Repair.
JF5111.0
INJECTION
Fault finding - Status and parameter interpretation17
E7J 780
engine
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 19
Fiche n° 27
FAULT WARNING LIGHT CIRCUIT
XR25 aid:None
No fault bargraphs should be illuminated.NOTES
Check the condition of the warning light and its feed.
Repair if necessary.
17-55

JF5111.0
INJECTION
Fault finding - Checking conformity
17
E7J 780
engine
Engine cold, ignition on.NOTES
Order of
operationsFunction to be
checkedAction Bargraph Display and notes
6 Throttle position
potentiometerNo load
# 17
Accelerator
pedal slightly
depressed
Full load
# 17 16 < X < 50
185 < X < 243
7Absolute pressure
sensor# 01 X = Local atmospheric
pressure
8Coolant temperature
sensor# 02 X = Ambient temperature
± 5 °C
9Air temperature
sensor# 03 X = Ambient temperature
± 5 °C
10Idle speed regulation
stepping motor# 12The value read is variable
depending on the coolant
temperature :
7 % ≤ X ≤ 100 %
11Engine speed
# 06 X = 0 rpm
12Canister bleed
# 23 X = 0.7 %
2
2
2
17-65

JF5111.0
INJECTION
Fault finding - Checking conformity
17
E7J 780
engine
NOTES
Order of
operationsFunction to be
checkedAction Bargraph Display and notes
6Anti-pinking noise
measurement# 13
(3500 rpm, no
load) X variable or not zero
7 Manifold pressure# 01
no consumers X is variable and
approximately 350 ± 50 mb
(this pressure varies with
altitude)
8 Richness regulation Stable engine
speed of 2500
rpm then idle
speed
# 05
# 35X varies in the range from 50 to
900 mV approximately
X is close to 128 and varies
slightly
with a maximum of 255
and minimum of 0
9Adaptive idle speed
correction# 21- 2.4 % < X < 6.2 %
(average value after erasing
the memory: 0)
10 Canister bleed# 23Canister bleed is prevented.
The solenoid valve remains
closed. X = 0.7 %
11 PAS pressostat# 06X = 850 rpm
Engine warm, at idle speed, after fan assembly has operated at least once.
6
6
7
13
17-69

Connect the bornier in place of the computer and check the insulation and continuity of the line:
Computer 19 6 Instrument panel
Repair.
JSA051.0
INJECTION
Fault finding - Interpretation of XR25 bargraphs17
D7F 710
engine -
35 tracks
Erase the computer memory using G0**.
Try to start the engine. Switch the ignition on, then deal with the other faults.
Remember to carry out a status and parameter check.AFTER REPAIR
Bargraph 12 LH side illuminatedFiche n° 27 side 1/2
FAULT WARNING LIGHT CIRCUIT
XR25 aid:CO, CC- or CC+ line 19 of the computer

12
NoneNOTES
Check the condition of the warning light and its feed.
Repair if necessary.
17-97

JSA051.0
INJECTION
Fault finding - Status and parameter checks
17
D7F 710
engine -
35 tracks
Engine cold, ignition on.NOTES
Order of
operationsFunction to be
checkedAction Bargraph Display and notes Fault finding
6Throttle
position
potentiometer
.No load
# 17
Accelerator
pedal
slightly
depressed
Full load
# 1710 < X < 50
185 < X < 245
DIAG 2
7
Pressure sensor# 01X =Atmospheric pressureDIAG 9
8Coolant
temperature
sensor# 02
X = Engine temperature
± 5 °CDIAG 3
9Air
temperature
sensor# 03
X = Temperature under
bonnet ± 5 °CDIAG 4
10 Fan assemblyG17*Fan must operateDIAG 16
11Fault warning
light Switch
ignition onFault warning light must
illuminate then
extinguishDIAG 18
2
2
2
17-104

Connect the bornier in place of the computer and check the insulation and continuity of the line:
Computer 19 6 Instrument panel
Repair.
JSA051.0
INJECTION
Fault finding - Status and parameter interpretation17
D7F 710
engine -
35 tracks
AFTER REPAIRStart the status and parameter check again from the beginning.
DIAG 18
Fiche n° 27
FAULT WARNING LIGHT CIRCUIT
XR25 aid:None
No fault bargraphs should be illuminated.NOTES
Check the condition of the warning light and its feed.
Repair if necessary.
17-127