2008 RENAULT SCENIC air condition

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-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-75
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 running at idle speed at 80°C and Petrol mode
selected.
Order FunctionParameter or Status
checked or ActionDisplay and notes Fault finding
7Fuel pump ET025:Fuel pumpACTIVEACTIVE during
operation 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 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.
9PR103:Air
temperatureIndicates the air temperature in °C.
Check the consistency of the
temperatures by performing fault
finding on the petrol computer.

17C-77
MR-372-J84-17C000$590.mif
V2
17C
GAS INJECTION
Fault finding - Interpretation of statuses
ET022
WAITING FOR LPG CONDITIONS
YES
NO
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).
NOTESThere must be no present or stored faults.
Ignition on, engine stopped.
Status ET022 indicates YES for a variable period during which the computer checks that the LPG system is
operating correctly.
Variable duration depending on:
–ET100 LPG system ready,
–PR002 Coolant temperature,
–PR103 Air temperature,
–PR113 LPG temperature.
Apply the interpretation of faults DF103 LPG expansion valve solenoid valve circuit and DF007 Main relay
circuit.
Manipulate the wiring harness between the LPG computer and the petrol computer until a change in status is
noted.
Check the insulation, continuity and the absence of interference resistance on the connections between:
For Mégane 2:
LPG computer track A1
LPG computer track A2
For Logan:
LPG computer track A1
LPG computer track A2track K3, connector B, petrol computer
track K4, connector B, petrol computer
track 25 of the fuel computer
track 26 of the fuel computer
Repair if necessary.
If the status is still not correct, contact the Techline.
AFTER REPAIRFollow the instructions to confirm repair.
GAZ3000_V08_ET022 / GAZ3000_V10_ET022
LPG 3000
Program No.
Vdiag No: 08/10
MR-372-J84-17C000$590.mif

17C-79
MR-372-J84-17C000$590.mif
V2
GAS INJECTION
Fault finding - Interpretation of statuses
LPG 3000
Program No.
Vdiag No: 08/10
17C
ET084
FORCED PETROL MODE WITH EMPTY TANK
YES
NO
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).
NOTESThere must be no present or stored faults.
Ignition on, engine stopped.
Special note
Check that there is LPG in the tank.
Check that there is no fault on the petrol injection computer.
Test the petrol injection computer (see 17B, Petrol injection).
Status ET084 indicates YES if the LPG tank is empty and LPG mode is selected.
Using parameters PR001 Manifold pressure and PR112 LPG pressure downstream of the expansion valve,
check that PR112 - PR001 = 800 mbar.
If PR112 - PR001 < 800 mbar, check:
–the LPG tank solenoid valve (see DF013 Tank solenoid valve circuit),
–the expansion valve,
–the LPG pressure downstream of the expansion valve (see PR112 LPG pressure downstream of
expansion valve).
Repair or replace the faulty components, if necessary.
If the status is still not correct, check:
–that the injectors are functioning correctly, using commands AC018 Cylinder 4 injector, AC019 Cylinder 3
injector, AC020 Cylinder 2 injector and AC021 Cylinder 1 injector,
–the condition of the hoses between the expansion valve and the injectors.
Repair the faulty components if necessary.
If the status is still not correct, contact the Techline.
AFTER REPAIRFollow the instructions to confirm repair.
GAZ3000_V08_ET084 / GAZ3000_V10_ET084

17C-84
MR-372-J84-17C000$708.mif
V2
17C
GAS INJECTION
Fault finding - Interpretation of parameters
PR003
PRESSURE DIFFERENCE: LPG/ MANIFOLD
IMPORTANT
For an operation on a component of the LPG supply circuit, consult the safety instructions (see 17D,
Gas injection, Introduction, Safety instructions for all operations).
NOTESThere must be no present or stored faults.
Engine running in LPG mode.
Check that the pressure difference is 800 mbar.
Check the consistency in pressure difference using parameters PR001 Manifold pressure, PR003 Pressure
difference: LPG/manifold and PR112 LPG pressure downstream of expansion valve and ensure that
PR003 = PR112 - PR001.
If the fault is still present, manipulate the wiring harness between the manifold pressure sensor and the LPG
pressure/temperature sensor in order to produce a change in status.
Check the connection and condition of the manifold pressure sensor and the LPG pressure / temperature
sensor, and its connections.
If necessary, repair or replace the connector.
If the pressure difference is still inconsistent, apply the interpretation of fault DF031 LPG pressure downstream
of expansion valve.
If the fault is still present, replace the LPG pressure/temperature sensor (see MR 364 Mechanical, 17D,
LPG injection).
If the fault is still present, check the manifold pressure sensor by testing the Petrol computer (see 17B,
Petrol injection, Interpretation of faults).
If the fault is still present, contact the Techline.
AFTER REPAIRFollow the instructions to confirm repair.
GAZ3000_V08_PR003 / GAZ3000_V10_PR003
LPG 3000
Program No.
Vdiag No: 08/10
MR-372-J84-17C000$708.mif

17C-86
MR-372-J84-17C000$708.mif
V2
GAS INJECTION
Fault finding - Interpretation of parameters
LPG 3000
Program No.
Vdiag No: 08/10
17C
PR112
LPG PRESSURE DOWNSTREAM OF EXPANSION VALVE
NOTESThere must be no present or stored faults.
Ignition on, engine stopped.
Check that the LPG pressure downstream of the expansion valve is not more than 800 mbar greater than the
manifold pressure PR001 Manifold pressure.
Check the pressure value using parameters PR001 Manifold pressure, PR003 Pressure difference:
LPG/manifold and PR112 LPG pressure downstream of expansion valve and ensure that
PR003 = PR112 - PR001.
If the fault is still present, manipulate the wiring harness between the LPG computer and the LPG pressure/
temperature sensor to produce a status change.
Check the connection and condition of the LPG pressure/temperature sensor and its connections.
If necessary, repair or replace the connector.
Check for + 5V on track 1 (for Mégane 2) or track 3 (for Logan) of the LPG pressure/temperature sensor in LPG
mode. Check the insulation in relation to earth and the continuity and the absence of interference
resistance on the connection between:
For Mégane 2:
LPG computer track A3
For Logan:
LPG computer track A3track 1 of the LPG temperature/pressure sensor
track 3 of the LPG temperature/pressure sensor
Repair if necessary.
Check for earth on track 3 (for Mégane 2) or track 1 (for Logan) of the LPG pressure/temperature sensor in
LPG mode.
Check the insulation in relation to + 12V and the continuity and absence of interference resistance on
the connection between:
For Mégane 2:
LPG computer track B3
For Logan:
LPG computer track B3track 3 of the LPG temperature/pressure sensor
track 1 of the LPG temperature/pressure sensor
Repair if necessary.
AFTER REPAIRFollow the instructions to confirm repair.
GAZ3000_V08_PR112 / GAZ3000_V10_PR112

17C-91
MR-372-J84-17C000$826.mif
V2
GAS INJECTION
Fault finding - Interpretation of commands
LPG 3000
Program No.
Vdiag No: 08/10
17C
AC015
TANK SOLENOID VALVE
NOTESWith ignition on and engine stopped.
Switch on the ignition and run command AC015.
If the tank solenoid valve does not click ten times, carry out the fault finding procedure below.
Look for possible damage to the harness, and check the condition and connection of the LPG tank solenoid
valve and its connectors.
Repair if necessary.
Check the connection and condition of the LPG solenoid valve connector and its connections.
Replace the connector if necessary.
Check for +12 V on track 1 of the LPG tank relay and track C2 of the LPG computer.
Repair if necessary.
With the ignition on, check for earth on track 2 of the LPG tank solenoid valve relay.
If, with the ignition on, the computer does not control the LPG tank solenoid valve relay on track 2 through an
earth, contact the Techline.
–Check that the solenoid valve is supplied with +12 V by track E4 of the LPG computer.
If necessary, check the insulation, continuity and the absence of interference resistance on the connection
between:
For Mégane 2:
LPG computer track E4
For Logan:
LPG computer track E4track 2 of the LPG tank relay
track B2 of the double relay control unit
Repair if necessary.
AFTER REPAIRRepeat the conformity check from the start.
GAZ3000_V08_AC015 / GAZ3000_V10_AC015