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-83
MR-372-J84-17C000$649.mif
V2
17C
GAS INJECTION
Fault finding - Interpretation of parameters
Tool parameter Diagnostic tool title
PR001Manifold pressure
PR002Coolant temperature
PR003Pressure difference: LPG/ manifold
PR006Motor speed
PR007LPG tank sender signal voltage
PR012Engine speed multiplex signal
PR013LPG tank sender supply voltage
PR103Air temperature
PR110LPG injection duration
PR111LPG flow rate setpoint
PR112LPG pressure downstream of expansion valve
PR113LPG temperature
PR114Sensor supply voltage
PR116Sender resistance
LPG 3000
Program No.
Vdiag No: 08/10
MR-372-J84-17C000$649.mif
