17C-17
MR-372-J84-17C000$354.mif
V2
GAS INJECTION
Fault finding - Interpretation of faults
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
DF007
PRESENT
OR
STOREDMAIN RELAY CIRCUIT
1.DEF: Voltage outside permitted range of values
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 has been started and switched to LPG
mode.
Manipulate the wiring harness between the LPG computer and the main relay in order to produce a change in
status.
Look for any damage to the wiring harness and check the connection and condition of the main relay and its
connections (present ↔ stored).
If necessary, repair or replace the connector.
With the ignition on, check for +12V on track 1 and track 3 of the main relay.
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 the insulation in relation to + 12V and the continuity and absence of interference resistance on
the connection between:
LPG computer track F4 track 2 of the main relay
Repair if necessary.
With the ignition on, check for earth on track 2 of the main relay.
If, with the ignition on, the computer does not control the main relay on track 2 via an earth, contact the Techline.
With the engine running, check that the relay clicks when LPG mode is selected.
Replace the main relay 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_DF007 / GAZ3000_V10_DF007
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
