2008 RENAULT SCENIC fuel

17C-21
MR-372-J84-17C000$354.mif
V2
GAS INJECTION
Fault finding - Interpretation of faults
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
DF016
PRESENT
IMPACT DETECTED
1.DEF: Impact detected
2.DEF: Non-compliance with emission control standards
NOTESPriority when dealing with a number of faults:
If faults DF021 LPG tank solenoid valve relay circuit or fault DF018 + After ignition
feed supply are present or stored, deal with these faults first.
Special note:
As soon as the LPG computer receives this signal, engine operation is prohibited.
If the vehicle has been involved in an accident:
Carry out any necessary repairs,
–clear the fault,
–switch off the ignition,
–wait for the engine immobiliser indicator light to flash,
–switch on the ignition,
If the fault does not recur, end the fault finding procedure.
If the fault recurs, carry out fault finding on the AIRBAG computer.
If the vehicle has not been involved in an accident:
Check for + 12V on track 3 of the fuel pump cut-off relay and the LPG tank relay.
Repair if necessary.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
GAZ3000_V08_DF016P / GAZ3000_V10_DF016

17C-25
MR-372-J84-17C000$354.mif
V2
GAS INJECTION
Fault finding - Interpretation of faults
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
DF020
PRESENT
OR
STOREDFUEL SENDER SWITCHING RELAY CIRCUIT
CC.1: Short circuit to + 12 Volts
CO.0: Open circuit or short circuit to earth
2.DEF: Non-compliance with emission control standards
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after the engine is started and switched to LPG mode
or when command AC005 Fuel sender relay is executed.
Manipulate the wiring harness between the LPG computer and the fuel sender relay in order to produce a change
in status (present ↔ stored).
Look for possible damage to the wiring harness and check the connection and condition of the fuel sender relay
and its connections.
Repair if necessary.
Check the continuity and insulation of the following connection:
Fuel sender relay track 5 track E3, LPG computer
Replace the fuse if necessary.
With the ignition on, check for +12V on track C1 of the LPG computer.
Check the insulation in relation to earth and the continuity and the absence of interference resistance on
the connection between:
LPG computer track C1 track B1 of the LPG or petrol selector switch
If the fault is still present, check the intermediate connector (R34 on track 7, for Mégane 2 and R212 on
track B6, for Logan).
Repair if necessary.
Check the insulation in relation to earth and the continuity and the absence of interference resistance on
the connection between:
LPG computer track E4 track 2 of the fuel sender relay
Repair if necessary.
In LPG operation, check for earth on track 2 of the fuel sender relay.
If, with the ignition on, the computer does not control the fuel sender relay on track 2 via an earth, contact
the Techline.
If the fault is still present, replace the fuel sender relay.
If the fault is still present, deal with the other faults, then proceed to the conformity check.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
GAZ3000_V08_DF020 / GAZ3000_V10_DF020

17C-26
MR-372-J84-17C000$354.mif
V2
GAS INJECTION
Fault finding - Interpretation of faults
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
DF021
PRESENT
OR
STOREDLPG TANK SOLENOID VALVE RELAY CIRCUIT
CC.1: Short circuit to + 12 Volts
CO.0: Open circuit or short circuit to earth
1.DEF: Non-compliance with emission control standards
NOTESPriority when dealing with a number of faults:
If fault DF024 Fuel pump cut-off relay circuit is present or stored, deal with this fault
first.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present after the engine has been started and switched to LPG
mode.
Manipulate the wiring harness between the LPG computer and the LPG tank solenoid valve relay in order to
produce a change in status (present ↔ stored).
Look for possible damage to the wiring harness and check the condition and connection of the LPG tank
solenoid valve relay and its connections.
If necessary, repair or replace the connector.
With the ignition on, check for + 12V on track 1 of the LPG tank solenoid valve relay and track C2 of the LPG
computer.
If no + 12 V:
–disconnect the battery,
–in the Protection and Switching Unit, disconnect the grey connector,
–check the cleanliness and condition of the connections,
–Use the universal bornier to check the continuity of the following connection:
For Mégane 2:
Protection and Switching Unit, grey connector, track 1
For Logan:
Fuse box, track S4track 3 of the main relay
track A5 of the main relay
Repair if necessary.
Check for + 12V on track 3 of the LPG tank solenoid valve relay.
If + 12V is not present, use the universal bornier to check the continuity of the following connection:
For Mégane 2:
Tank solenoid valve relay track 3
For Logan:
Double control relay unit track B3track 5 of the fuel pump relay
track B5 of the fuel pump relay
Repair if necessary.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
GAZ3000_V08_DF021 / GAZ3000_V10_DF021

17C-29
MR-372-J84-17C000$354.mif
V2
GAS INJECTION
Fault finding - Interpretation of faults
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
DF024
PRESENT
OR
STOREDFUEL PUMP CUT-OFF RELAY CIRCUIT
CO.0: Open circuit or short circuit to earth
CC.1: Short circuit to + 12 Volts
1.DEF: Non-compliance with emission control standards
NOTESPriority when dealing with a number of faults:
If fault DF021 LPG tank solenoid valve relay circuit is present or stored, deal with
this fault first.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present after the engine has been running for 10 seconds in
LPG mode.
Manipulate the wiring harness between the LPG computer and the fuel pump cut-off relay in order to produce
a change in status (present ↔ stored).
Look for any damage to the wiring harness and check the connection and condition of the fuel pump cut-off
relay and its connections.
Check the insulation in relation to earth and the continuity and the absence of interference resistance on
the connection between:
For Mégane 2:
Main relay track 5
For Logan:
Double control relay unit track A3track 1 of the fuel pump cut-off relay
track B5 of the fuel pump cut-off relay
Repair if necessary.
Check the insulation in relation to + 12V and the continuity and absence of interference resistance on
the connection between:
LPG computer track F3 track 2 of the fuel pump cut-off relay
Repair if necessary.
In LPG operating mode, using status ET025 Fuel pump, check that status ET025 is ACTIVE when starting
and then changes to INACTIVE after 1 minute.
If ET025 does not change to INACTIVE, check for earth on track 2 of the fuel pump cut-off relay.
If, with the ignition on, the computer does not control the fuel pump cut-off relay on track 2 through an earth,
contact your Techline.
If the fault is still present, replace the fuel pump cut-off relay.
If the fault is still present, deal with the other faults, then proceed to the conformity check.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
GAZ3000_V08_DF024 / GAZ3000_V10_DF024

17C-33
MR-372-J84-17C000$354.mif
V2
GAS INJECTION
Fault finding - Interpretation of faults
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
DF030
PRESENT
OR
STOREDLPG TANK SENDER SUPPLY VOLTAGE
1.DEF: Voltage outside permitted range of values
2.DEF: Non-compliance with emission control standards
IMPORTANT
When carrying out an operation on an LPG supply circuit component, consult the safety instructions
(see 17D, Gas injection, Introduction, Safety instructions for all operations).
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after the engine has been started and switched to LPG
mode.
Manipulate the wiring harness between the LPG computer and the LPG tank sender in order to produce a change
in status (present ↔ stored).
Look for any damage to the wiring harness and check the connection and condition of the LPG tank sender
connector.
Replace the connector if necessary.
Check for a supply on track A4 (for Mégane 2) or on track B2 (for Logan) of the LPG computer and on track A
(for Mégane 2) or on track A2 (for Logan) of the fuel sender during LPG operation.
For Mégane 2: check the intermediate connectors R2 track 39, R34 track 15 and R345 track A.
Contact the Techline if the voltage value is not between 4.6V and 5.2V.
Check the insulation and continuity of the following connection:
For Mégane 2:
LPG computer track D3
For Logan:
LPG computer track D3track C of the LPG tank sender
track A1 of the LPG tank sender unit
If the fault is still present, check the intermediate connectors (R2 track 37, for Mégane 2, R674 track 4,
for Logan) and (R34 track 16 and R345 track C, for Mégane 2).
Repair if necessary.
If the fault is still present, deal with the other faults, then proceed to the conformity check.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
GAZ3000_V08_DF030 / GAZ3000_V10_DF030

17C-54
MR-372-J84-17C000$472.mif
V2
17C
GAS INJECTION
Fault finding - Conformity check
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 stopped, ignition on and LPG mode selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
1Main relay ET049:General relayINACTIVEIn the event of a fault,
apply the interpretation
of DF007 Main relay circuit.
2
Petrol/LPG
mode
consistencyET021:Mode selectedLPG NONE
3ET094:Petrol modeNORMALCheck the consistency
between statuses
ET094 Petrol mode
and ET093 LPG mode.
If there is inconsistency,
contact the Techline. 4PR093:LPG modeNO
5
Engine speedPR006:Engine speedPR006 = 0 mph
(0 km/h)In 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
RELEASEDIn the event of a fault, apply
the interpretation
of DF020 Fuel sender
switching relay circuit.
8Sensor voltage PR114:Sensor feed
voltage4.9 V < PR114 < 5 VIn the event of a fault, apply
the interpretation of DF096
Sensor supply voltage.
GAZ3000_V08_CCONF / GAZ3000_V10_CCONF
LPG 3000
Program No.
Vdiag No: 08/10
MR-372-J84-17C000$472.mif

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-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