2008 RENAULT SCENIC Gas Injection LPG 3000 Workshop Manual

17C-65
MR-372-J84-17C000$472.mif
V2
LPG 3000
Program No.
Vdiag No: 08/10GAS INJECTION
Fault finding - Conformity check17C
MAIN SCREEN
NOTESOnly perform this conformity check after a complete check with the diagnostic tool.
The values indicated in this conformity check are given as examples.
Application conditions: Engine running at idle speed at 80°C and LPG mode
selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
1Main relay ET049:General relayACTIVEIn the event of a fault,
apply the interpretation
of DF007 Main relay circuit.
2
Petrol/LPG
mode
consistencyET021:Mode selectedLPG NONE
3ET094:Petrol modeNORMAL
Then NOCheck the consistency between
statuses ET094 Petrol mode
and ET093 LPG mode.
If there is inconsistency, contact
the Techline. 4PR093:LPG modeNO
Then YES
5
Engine speedPR006:Engine speedPR006 = 750 rpm
± 50 rpmIn the event of a fault, carry out
a full fault finding procedure on
the petrol injection system. Deal
with any other faults.
6PR012:Engine speed
multiplex signalPR012 = 0 mph (0 km/h)In the event of a fault, apply the
interpretation of
DF074 TDC signal circuit.
7LPG switch ET105:LPG switchPRESSED In the event of a fault, apply
the interpretation of DF020 Fuel
sender switching relay circuit.
8Sensor
voltagePR114:Sensor feed
voltage4.9 V < PR114 < 5 VIn the event of a fault, apply
the interpretation of
DF096 Sensor supply voltage.
GAZ3000_V08_CCONF

17C-66
MR-372-J84-17C000$472.mif
V2
LPG 3000
Program No.
Vdiag No: 08/10GAS INJECTION
Fault finding - Conformity check17C
MAIN SCREEN (CONTINUED)
NOTESOnly perform this conformity check after a complete check with the diagnostic tool.
The values indicated in this conformity check are given as examples.
Application conditions: Engine running at idle speed at 80°C and LPG mode
selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
9
Temperatures PR103:Air temperatureIndicates the temperature
– of water in °C.
– of air in °C.
Check the consistency of the
temperatures by performing
fault finding on the petrol
computer.In the event of a fault, carry
out a full fault finding
procedure on the petrol
injection system.
Deal with any other faults. 10 PR002:Coolant
temperature
11LPG
temperaturePR113:LPG temperatureGives the LPG temperature
in °C.
- 40°C < PR113 < 120°CNONE

17C-67
MR-372-J84-17C000$472.mif
V2
LPG 3000
Program No.
Vdiag No: 08/10GAS INJECTION
Fault finding - Conformity check17C
SUB-FUNCTION: PETROL → LPG TRANSITION
NOTESOnly perform this conformity check after a complete check with the diagnostic tool.
The values indicated in this conformity check are given as examples.
Application conditions: Engine running at idle speed at 80°C and LPG mode
selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
1
LPG / Petrol
switchET094:Petrol modeNORMAL
Then NOCheck the consistency between
statuses ET094 Petrol mode
and ET093 LPG mode.
If there is inconsistency,
contact the Techline.
2ET084:Forced petrol
mode, empty tankNOIf YES, carry out a multiplex network
test. If the multiplex network is
correct, check that
the LPG tank is full.
If the tank is full, apply
the interpretation of status ET084
Forced petrol mode, tank empty.
3ET023:Forced Petrol
mode, LPG faultNOIf YES, apply the interpretation
of status ET023 "Forced petrol
mode, LPG fault".
4ET021:Mode selectedLPG NONE
5ET100:LPG system readyYESIf there is inconsistency, apply the
interpretation of status
ET100 LPG system ready.
6ET022:Waiting for LPG
conditionsNOIf there is inconsistency, apply the
interpretation of status ET022
Waiting for LPG conditions.
7ET096:Petrol to LPG
TransitionNO
Then YESWhen the LPG operating mode has
been selected, if ET022 Waiting for
LPG conditions is NO
and ET100 LPG system ready is
YES, then ET096 Petrol to LPG
Transition should be YES. If NO,
apply the interpretation of ET096.

17C-68
MR-372-J84-17C000$472.mif
V2
LPG 3000
Program No.
Vdiag No: 08/10GAS INJECTION
Fault finding - Conformity check17C
SUB-FUNCTION: PETROL → LPG TRANSITION (CONTINUED)
NOTESOnly perform this conformity check after a complete check with the diagnostic tool.
The values indicated in this conformity check are given as examples.
Application conditions: Engine running at idle speed at 80°C and LPG mode
selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
8LPG / Petrol
switchET093:LPG modeNO
Then YESCheck the consistency
between statuses
ET094 Petrol mode
and ET093 LPG mode.
If there is inconsistency,
contact the Techline.
9
Petrol
injection
signalsPR006:Engine speedIndicates the engine's speed
of rotation in rpm.
PR006 = 750 rpm
± 50 rpmIn the event of a fault, carry
out a full fault finding
procedure on the petrol
injection system.
Deal with any other faults.
10 PR002:Coolant
temperatureIndicates the engine coolant
temperature in °C.
Check the consistency of
the temperatures by
performing fault finding on
the petrol computer.In the event of a fault, carry
out a full fault finding
procedure on the petrol
injection system.
Deal with any other faults.
11 PR103:Air temperatureIndicates the air temperature
in °C.
Check the consistency of
the temperatures by
performing fault finding on
the petrol computer.
12LPG
temperaturePR113:LPG
TemperatureGives the LPG temperature
in °C.
- 40°C < PR113 < 120°CNONE

17C-69
MR-372-J84-17C000$472.mif
V2
LPG 3000
Program No.
Vdiag No: 08/10GAS INJECTION
Fault finding - Conformity check17C
SUB-FUNCTION: LPG → PETROL TRANSITION
NOTESOnly perform this conformity check after a complete check with the diagnostic tool.
The values indicated in this conformity check are given as examples.
Application conditions: Engine running at idle speed at 80°C and Petrol mode
selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
1
LPG / Petrol
switchET093:LPG modeYES
Then NO Check the consistency
between statuses
ET094 Petrol mode
and ET093 LPG mode.
If there is inconsistency,
contact the Techline.
2ET021:Mode selectedPETROL NONE
3ET095:LPG to Petrol
TransitionYES
NONONE
4ET094:Petrol modeNO
Then NORMALCheck the consistency
between statuses
ET094 Petrol mode
and ET093 LPG mode.
If there is inconsistency,
contact the Techline.
5ET084:Forced petrol
mode, empty tankNOIf YES, test the multiplex
network. If the multiplex
network is correct, check that
the LPG tank is full. If the tank
is full, apply the interpretation
of status ET084 Forced petrol
mode, tank empty.
6ET023:Forced Petrol
mode, LPG faultNOIf YES, apply the interpretation
of status ET023 Forced petrol
mode, LPG fault.

17C-70
MR-372-J84-17C000$472.mif
V2
LPG 3000
Program No.
Vdiag No: 08/10GAS INJECTION
Fault finding - Conformity check17C
SUB-FUNCTION: LPG → PETROL TRANSITION
NOTESOnly perform this conformity check after a complete check with the diagnostic tool.
The values indicated in this conformity check are given as examples.
Application conditions: Engine running at idle speed at 80°C and Petrol mode
selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
7
Petrol injection
signalsPR006:Engine speedIndicates the engine's speed
of rotation in rpm.
PR006 = 750 rpm
± 50 rpm
In the event of a fault,
carry out a full fault
finding procedure on
the petrol injection
system.
Deal with any other
faults. 8PR002:Coolant
temperature Indicates the engine coolant
temperature in °C.
Check the consistency of
the temperatures by
performing fault finding on
the petrol computer.
9PR103:Air temperatureIndicates the air temperature
in °C.
Check the consistency of the
temperatures by performing
fault finding on the petrol
computer.

17C-71
MR-372-J84-17C000$472.mif
V2
LPG 3000
Program No.
Vdiag No: 08/10GAS INJECTION
Fault finding - Conformity check17C
SUB-FUNCTION: OPERATION IN LPG MODE
NOTESOnly perform this conformity check after a complete check with the diagnostic tool.
The values indicated in this conformity check are given as examples.
Application conditions: Engine running at idle speed at 80°C and LPG mode
selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
1
LPG / Petrol
switchET021:Mode selectedLPG NONE
2ET093:LPG modeYESCheck the consistency
between statuses
ET094 Petrol mode
and ET093 LPG mode.
If there is inconsistency,
contact the Techline.
3Petrol
injection
signalsPR006:Engine speedIndicates the engine's speed
of rotation in rpm.
PR006 = 750 rpm
± 50 rpmIn the event of a fault, carry out
a full fault finding procedure on
the petrol injection system.
Deal with any other faults.
4LPG
expansion
valve
solenoid
valveET106:LPG
expansion
valve solenoid
valveOPENThe LPG expansion valve
solenoid valve must be OPEN
in LPG operation with the
engine running and CLOSED
in petrol operation. If there is
inconsistency, apply the
interpretation of DF103 LPG
expansion valve solenoid
valve circuit.
5Manifold
pressurePR001:Manifold
pressureIndicates the inlet manifold
vacuum pressure in mb.In the event of a fault, carry out
a full fault finding procedure on
the petrol injection system.
Deal with any other faults.
6
LPG pressurePR003:Pressure
difference:
LPG/ manifoldCalculation of the difference
between LPG pressure
and manifold pressure
in mb.
PR003 ≈ 800 mbarCheck that:
PR112 - PR001 = PR003
7PR112:LPG pressure
downstream of
expansion
valveIndicates the LPG pressure
downstream of the
expansion valve in mb.
PR112 = PR001 + 800 mbarIn the event of a fault, apply the
interpretation of
DF092 Expansion valve
downstream LPG pressure
sensor circuit and
DF017 LPG leak detection
downstream of expansion
valve.

17C-72
MR-372-J84-17C000$472.mif
V2
LPG 3000
Program No.
Vdiag No: 08/10GAS INJECTION
Fault finding - Conformity check17C
SUB-FUNCTION: OPERATION IN LPG MODE (CONTINUED)
NOTESOnly perform this conformity check after a complete check with the diagnostic tool.
The values indicated in this conformity check are given as examples.
Application conditions: Engine running at idle speed at 80°C and LPG mode
selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
8LPG flow
rate settingPR111:LPG flow rate
settingIndicates the LPG flow rate
setpoint in g/h.
0 g/h < PR111 < 600 g/h
NONE
9LPG
injection
durationPR110:LPG injection
timingDisplays the injection duration
in ms.
PR110 ≈ 5 ms
10
Tank senderPR013:LPG tank
sender
supply
voltage4.8 V < PR008< 5.2 VIn the event of a fault, apply
the interpretation
of DF030 LPG tank
sender supply voltage.
11 PR009:LPG tank
sender signal
voltageIndicates the signal voltage
compared to the pressure
in the LPG tank.For Logan: In the event
of a fault, apply the
interpretation
of DF029 LPG tank
sender signal voltage.
For Mégane II: In the event
of a fault, apply the
interpretation of fault
DF029 LPG tank sender
signal voltage
and parameters
PR009 and PR116. 12 PR116:Sender
resistanceFor Logan: Ignore this parameter.
For Mégane II:
Tank full:
20 Ω ± 2 Ω
Reserve tank:
290 Ω ± 2 Ω
Tank empty:
320 Ω ± 2 Ω