2008 RENAULT SCENIC ESP

17C-41
MR-372-J84-17C000$354.mif
V2
GAS INJECTION
Fault finding - Interpretation of faults
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
DF087
PRESENT
OR
STOREDCYLINDER 4 INJECTOR 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
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).
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 is started and switched to LPG mode
or when command AC018 Cylinder 4 injector is executed.
Manipulate the wiring harness between the LPG computer and Injector number 4 to produce a change in status.
(present ↔ stored).
Look for any harness damage, and check the condition and connection of injector no. 4 and its connectors.
If necessary, repair or replace the connector.
Measure the resistance of injector 4 between tracks 1 and 2.
The injector resistance value at approximately 20°C should be between:
0.7 Ω < R < 1.45 Ω
Replace the injector if necessary.
Check for insulation against earth, continuity and absence of interference resistance for the following
connections:
For Mégane 2:
General relay track 5
Black intermediate connector (R37) track 8
LPG Computer track H3
Black intermediate connector (R37) track 4
For Logan:
Injector 4 track 1
LPG Computer track H3track 8 of the black intermediate connector (R37)
track 1of injector 4
track 4 of the black intermediate connector (R37)
track 2 of injector 4
track A1 of the double control relay unit
track 2 of injector 4
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_DF087 / GAZ3000_V10_DF087

17C-43
MR-372-J84-17C000$354.mif
V2
GAS INJECTION
Fault finding - Interpretation of faults
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
DF088
PRESENT
OR
STOREDCYLINDER 3 INJECTOR 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
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).
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 is started and switched to LPG mode
or when command AC019 Cylinder 3 injector is executed.
Manipulate the wiring harness between the LPG computer and Injector number 3 to produce a change in status.
(present ↔ stored).
Look for any damage to the wiring harness and check the connection and condition of the injector and its
connections.
If necessary, repair or replace the connector.
Measure the resistance of injector 3 between tracks 1 and 2.
The injector resistance value at approximately 20°C should be between:
0.7 Ω < R < 1.45 Ω
Replace the injector if necessary.
Check for insulation against earth, continuity and absence of interference resistance for the following
connections:
For Mégane 2:
General relay track 5
Black intermediate connector (R37) track 7
LPG computer track H2
Black intermediate connector (R37) track 3
For Logan:
Injector 3 track 1
LPG computer track H2track 7 of the black intermediate connector (R37)
track 1of injector 3
track 3 of the black intermediate connector
track 2 of injector 3
track A1 of the double control relay unit
track 2 of injector 3
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_DF088 / GAZ3000_V10_DF088

17C-49
MR-372-J84-17C000$413.mif
V2
GAS INJECTION
Fault finding - Interpretation of faults
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
DF098
PRESENT
OR
STOREDCYLINDER 1 INJECTOR CIRCUIT
CO.0 : Open circuit or short circuit to earth
CC.1 : Short circuit to + 12 V
1.DEF : Non-compliance with emission control standards
IMPORTANT
For any operation on a component of the LPG supply circuit, consult the safety instructions (see 17D,
LPG injection, Introduction, Safety instructions for all operations).
NOTESPriority when dealing with a number of faults:
If fault DF021 LPG tank solenoid valve relay circuit is present or stored, deal with it first.
Conditions 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 AC021 Cylinder 1 injector is executed.
Manipulate the wiring harness between the injection computer and the cylinder 1 injector in order to produce a change in
status
(present ↔ stored).
Look for any harness damage, and check the condition and connection points of the injector and its connections.
If necessary, repair or replace the connector.
Measure the resistance of injector 1 between tracks 1 and 2.
The injector resistance value at roughly 20 °C must be between:
0.77 Ω < R < 1.43 Ω
Replace the injector if necessary.
Check for insulation against earth, continuity and absence of interference resistance for the following connections:
For Mégane 2:
General relay track 5
Black intermediate connector (R37) track 5
LPG computer track G3
Black intermediate connector (R37) track 1
For Logan:
Injector 1 track 1
LPG computer track G3track 15 of the black intermediate connector (R37)
track 1 of injector 1
track 1 of the black intermediate connector (R37)
track 2 of injector 1
track A1 of the double relay control unit relay
track 2 of injector 1
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_DF098 / GAZ3000_V10_DF098

17C-52
MR-372-J84-17C000$413.mif
V2
GAS INJECTION
Fault finding - Interpretation of faults
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
DF103
PRESENT
OR
STOREDLPG EXPANSION VALVE SOLENOID VALVE CIRCUIT
CO.0 : Open circuit or short circuit to earth
CC.1 : Short circuit to + 12 V
1.DEF : Non-compliance with emission control standards
IMPORTANT
For any operation on a component of the LPG supply circuit, consult the safety instructions (see 17D,
LPG injection, Introduction, Safety instructions for all operations).
NOTESPriority when dealing with a number of faults:
If fault DF021 LPG tank solenoid valve relay circuit is present or stored, deal with it
first.
Conditions 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 AC024 LPG expansion solenoid valve is executed.
Manipulate the wiring harness between the LPG computer and the LPG expansion valve solenoid valve in order
to produce a change in status (present ↔ stored).
Look for possible damage to the harness, and check the condition and connection of the LPG expansion valve
solenoid valve and its connectors.
Repair if necessary.
Measure the resistance between tracks 1 and 2 of the LPG expansion valve solenoid valve.
Replace the solenoid valve if the resistance is not approximately 12.6 Ω ± 1.3Ω .
Check the following connections for insulation from earth, continuity and absence of extraneous resistance:
For Mégane 2:
LPG expansion valve solenoid valve track 1
For Logan:
LPG expansion valve solenoid valve track 1
Intermediate connector (R674) track 1track 5 of the main relay
Intermediate connector (R674) track 1
track A3 of the main 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_DF103 / GAZ3000_V10_DF103

17C-55
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 stopped, ignition on and LPG mode selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
9
TemperaturesPR103:Air temperature Indicates 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.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
11 Gas temperature PR113:Gas temperatureNONE

17C-105
MR-372-J84-17C000$944.mif
V2
GAS INJECTION
Fault finding - Fault finding chart (ALP)
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
ALP 4 Idle speed faults
IMPORTANT
For any operation on a component of the LPG supply circuit, consult the safety instructions (see 17D,
LPG injection, Introduction, Safety instructions for all operations).
NOTESCheck that there is no fault in petrol mode.
Check that there is LPG in the tank.
Check that hoses are not blocked or pinched (especially after removal operations).
Repair the faulty component or components.
Check the condition of the air filter.
Replace the air filter if necessary.
Check the expansion valve cooling circuit (see MR 364 Mechanical, 17D, LPG injection, Expansion valve).
Repair the circuit if necessary.
Check the conformity of the spark plugs.
Replace the filter if necessary.
Test the operation of the injectors.
Run and interpret commands AC018 Cylinder 4 injector, AC019 Cylinder 3 injector, AC020 Cylinder 2
injector and AC021 Cylinder 1 injector.
AFTER REPAIRCheck using the diagnostic tool.
GAZ3000_V08_ALP4 / GAZ3000_V10_ALP4

17C-106
MR-372-J84-17C000$944.mif
V2
GAS INJECTION
Fault finding - Fault finding chart (ALP)
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
ALP 5 Faults occurring while driving
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).
NOTESCheck that there is no fault in petrol mode.
Check that hoses are not blocked or pinched (especially after removal operations).
Repair the faulty component or components.
Check the condition of the air filter.
Replace the air filter if necessary.
Check the expansion valve cooling circuit (see MR 364 Mechanical, 17D, LPG injection, Expansion valve).
Repair the circuit if necessary.
Check the conformity of the spark plugs.
Replace the filter if necessary.
Test the operation of the injectors.
Run and interpret commands AC018 Cylinder 4 injector, AC019 Cylinder 3 injector, AC020 Cylinder 2
injector and AC021 Cylinder 1 injector.
AFTER REPAIRCheck using the diagnostic tool.
GAZ3000_V08_ALP5 / GAZ3000_V10_ALP5