2008 RENAULT SCENIC Gas Injection LPG 3000 Workshop Manual

17C-57
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 stopped, ignition on and LPG mode selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
7
LPG / Petrol
switchET096:Petrol to LPG
TransitionNOWhen 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 there is
inconsistency, apply the
interpretation of status
ET096.
8ET093:LPG modeNOCheck 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 = 0 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 temperature
–of water in °C.
–of air in °C.
–of gas in °C.
Check the consistency of the
temperatures by performing
fault finding on the petrol
computer.
With a cold engine, the
three temperatures should be
almost identical. 11 PR103:Air
temperature
12LPG
temperaturePR113:LPG
TemperatureNONE

17C-58
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 switched off, ignition on and Petrol mode
selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
1
LPG / Petrol
switchET093:LPG modeNOCheck 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
TransitionNO NONE
4ET094:Petrol modeNORMALCheck 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-59
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 switched off, ignition on and Petrol mode
selected.
Order FunctionParameter or Status
checked or ActionDisplay and
notesFault finding
7
Petrol injection
signalsPR006:Engine speedIndicates the engine's speed
of rotation in rpm.
PR006 = 0 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 temperature
–of water in °C.
–of air in °C.
Check the consistency of the
temperatures by performing
fault finding on the petrol
computer. With a cold
engine, the two
temperatures should be
almost identical. 9PR103:Air temperature

17C-60
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 stopped, ignition on 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 speedShows the engine's
speed of rotation
in rpm.
PR006 = 0 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
valveCLOSEDThe LPG expansion valve
solenoid valve must be OPEN
during LPG operation with the
engine running and CLOSED
in petrol operation.
If inconsistent, apply
the interpretation of
DF103 "LPG expansion
valve solenoid valve circuit".

17C-61
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 1)
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 condition: Engine stopped, ignition on and LPG mode selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
5Manifold
pressurePR001:Manifold
pressureIndicates the inlet manifold
vacuum pressure in mb.
PR001 = atmospheric
pressureIn 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-62
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 2)
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 condition: Engine stopped, ignition on 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.
PR111 = 0 g/h
NONE
9LPG injection
durationPR110:LPG injection
timingDisplays the injection duration
in ms.
PR110 = 0 ms
10
Tank senderPR013:LPG tank
sender supply
voltage4.8 V < PR008< 5.2 VIn the event of a fault,
apply the interpretation of
fault 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 fault
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
13LPG
temperaturePR113:LPG
TemperatureGives the LPG temperature
in °C.
- 40°C < PR113 < 120°CNONE
14 Fuel pump ET025:Fuel pumpACTIVEACTIVE when operating in
Petrol mode. If there is
inconsistency, carry out
a full fault finding
procedure on the petrol
injection system.
Deal with any other faults.

17C-63
MR-372-J84-17C000$472.mif
V2
LPG 3000
Program No.
Vdiag No: 08/10GAS INJECTION
Fault finding - Conformity check17C
SUB-FUNCTION: OPERATION IN PETROL 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 switched off, ignition on and Petrol mode
selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
1
LPG / Petrol
switchET021:Mode selectedPETROL NONE
2ET094:Petrol modeNORMALCheck the consistency
between statuses
ET094 Petrol mode
and ET093 LPG mode.
If there is inconsistency,
contact the Techline.
3ET084: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.
4ET023:Forced Petrol
mode, LPG
faultNOIf YES, apply the interpretation
of status ET023 Forced petrol
mode, LPG fault.
5Petrol
injection
signalPR006:Engine speedShows the engine's speed
of rotation in rpm.
PR006 = 0 rpm
In the event of a fault, carry out
a full fault finding procedure on
the petrol injection system.
Deal with any other faults.
6Manifold
pressurePR001:Manifold
pressureIndicates the inlet
manifold vacuum
pressure in mb.
PR001 = Atmospheric
pressure

17C-64
MR-372-J84-17C000$472.mif
V2
LPG 3000
Program No.
Vdiag No: 08/10GAS INJECTION
Fault finding - Conformity check17C
SUB-FUNCTION: OPERATION IN PETROL 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 switched off, ignition on and Petrol mode
selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
7Fuel pump ET025:Fuel pumpACTIVEACTIVE when operating in
Petrol mode. If there is
inconsistency, carry out
a full fault finding procedure
on the petrol injection
system. Deal with any other
faults.
8
Petrol
injection
signalPR002:Coolant
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.
With a cold engine, the two
temperatures should be
almost identical.In the event of a fault, carry
out a full fault finding
procedure on the petrol
injection system. Deal with
any other faults. 9PR103:Air temperature