check engine RENAULT SCENIC 2008 J84 / 2.G Gas Injection LPG 3000 Workshop Manual

1Engine and peripherals
V2 MR-372-J84-17C000$TOC.mif
V2
17C
"The repair procedures given by the manufacturer in this document are based on the
technical specifications current when it was prepared.
The procedures may be modified as a result of changes introduced by the
manufacturer in the production of the various component units and accessories from
which his vehicles are constructed."
V2
All rights reserved by Renault s.a.s.
Edition Anglaise
Copying or translating, in part or in full, of this document or use of the service part
reference numbering system is forbidden without the prior written authority of
Renault s.a.s.
© Renault s.a.s. 2008
GAS INJECTION
LPG 3000
Program No: AB
Vdiag No: 08/10
Fault finding - Introduction 17C - 2
Fault finding - System operation 17C - 9
Fault finding - Replacement of components 17C - 13
Fault finding - Configurations and programming 17C - 14
Fault finding - Fault summary table 17C - 15
Fault finding - Interpretation of faults 17C - 16
Fault finding - Conformity check 17C - 54
Fault finding - Status Summary table 17C - 76
Fault finding - Interpretation of statuses 17C - 77
Fault finding - Interpretation of parameters 17C - 83
Fault finding - Command summary table 17C - 89
Fault finding - Interpretation of commands 17C - 90
Fault finding - Customer complaints 17C - 98
Fault finding - Fault finding chart (ALP) 17C - 99

17C-2
MR-372-J84-17C000$059.mif
V2
17C
GAS INJECTION
Fault finding - Introduction
1. SCOPE OF THIS DOCUMENT
This document presents the fault finding procedures applicable to all computers with the following specifications:
2. PREREQUISITES FOR FAULT FINDING
Documentation type
Fault finding procedures (this manual):
–Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring Diagrams:
–Visu-Schéma.
Type of diagnostic tools
–CLIP + multiplex line sensor
Special tooling required
3. REMINDERS
Procedure for Mégane 2
To carry out fault finding on the vehicle's computers, switch the ignition to fault finding mode (forced + after ignition).
Proceed as follows:
–Put the vehicle card in the card reader.
–Press and hold Start button (longer than 5 seconds) with start-up conditions not fulfilled.
–connect the diagnostic tool and perform the required operations.
To cut off the + after ignition feed, proceed as follows:
–disconnect the diagnostic tool,
–press the Start button twice briefly (less than 3 seconds),
–ensure that the + after ignition feed has been cut off by checking that the computer indicator lights on the
instrument panel have gone out.
Procedure for Logan
To run fault finding on the vehicle computers, switch on the ignition. Connect the diagnostic tool and perform the
required operations.Vehicle (s): LOGAN and MEGANE 2
Function concerned: Gas Injection
Engines: K4M 764/788/698Computer name: GAS 3000
Program No.: AB
Vdiag No.: 08/10
Special tooling required
Multimeter
Elé. 1681 Universal bornier
Note:
The left-hand and right-hand xenon bulb computers are powered when the dipped headlights are lit.
Fault finding on these computers is therefore not possible until after the ignition has been switched on in
diagnostic mode (forced + after ignition) and the dipped beam headlights have been switched on.
GAZ3000_V08_PRELI / GAZ3000_V10_PRELI
LPG 3000
Program No: AB
Vdiag No: 08/10
MR-372-J84-17C000$059.mif

17C-7
MR-372-J84-17C000$059.mif
V2
GAS INJECTION
Fault finding - Introduction
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
Safety instructions that must be followed after any operation is performed on the vehicle
–after working on an LPG union, check that it is not leaking after it has been refitted,
–apply soapy water or the product distributed by SODICAM, part number 77 11 143 071 (leak detector) to the
open union(s),
–fill the fuel tank with a few litres of LPG if it has been bled (the ignition must be switched off first),
–start the engine, put it in LPG mode and check again that there is no leak,
–if a leak is detected, retighten the union concerned. If the leak persists, refit the union,
–fill the fuel tank (80% of the total volume). start the engine, put it in LPG mode and check that there is no leak,
–after refitting, check that all the rubber and encased steel LPG pipes are not in contact with any parts that may
cause them to wear and create an LPG leak.

17C-8
MR-372-J84-17C000$059.mif
V2
GAS INJECTION
Fault finding - Introduction
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
ROAD TEST (in Petrol mode, then in LPG mode)
–check that the stabilisation time is normal,
–check that the engine does not stall under sudden braking and that it maintains a stable idle speed until the vehicle
comes to a stop,
–put the vehicle in 4th gear, at a steady speed of 36 mph (60 km/h). Check that the vehicle accelerates
progressively under full load acceleration.
Maintenance operations:
–no adjustment,
–removal of internal components is not permitted,
–if LPG clips are removed, they must be replaced,
–if LPG unions are removed, they must be replaced.
The tank must be bled before removing:
●the fuel tank,
●a component bolted to the fuel tank,
To remove the following, bleed all gas contained in the gas circuit (except the gas in the tank):
●the filler neck,
●the pipes,
●the filter,
●the pressure relief valve,
●the solenoid valve. IMPORTANT
Before performing any work on the vehicle, drain the LPG circuit.
Only personnel who have undergone special LPG training can work with gas unions where gas is circulating and
which run from the expansion valve via the fuel tank.
Equally, only these persons are permitted to perform servicing and repair operations on LPG vehicles.
Workshops can only carry out work on the fuel tank if they have a degassing burner. If the tank cannot be
degassed, do not carry out any work and contact the Comité Français du Butane et du Propane (French
Butane and Propane Commission) by fax on 01 41 97 02 89.

17C-13
MR-372-J84-17C000$177.mif
V2
17C
GAS INJECTION
Fault finding - Replacement of components
COMPUTER REPLACEMENT OR REPROGRAMMING PROCEDURE
The system can be programmed and reprogrammed via the diagnostic socket using the RENAULT CLIP diagnostic
tool (see Technical Note 3585A or follow the instructions provided by the diagnostic tool).
After reprogramming or replacing the computer:
–Switch the ignition off and then on again.
–Start and run the engine in LPG mode then stop the engine (to initialise the computer) and wait for
30 seconds.
–Switch on the ignition and use the diagnostic tool to carry out the following steps:
–use command VP001 Write VIN,
–after the injection has been reprogrammed, stored faults may appear on other computers. Clear the memories of
these computers,
–carry out a road test followed by another check with the diagnostic tool. IMPORTANT
–switch on the diagnostic tool (mains or cigarette lighter supply),
–connect a battery charger,
–shut down all the electrical consumers (lights, interior lights, air conditioning, radio CD, etc.),
–wait for the engine to cool down (coolant temperature below 60 °C and air temperature below 50 °C).
LPG 3000
Program No: AB
Vdiag No: 08/10
MR-372-J84-17C000$177.mif

17C-16
MR-372-J84-17C000$354.mif
V2
17C
GAS INJECTION
Fault finding - Interpretation of faults
DF003
PRESENT
OR
STOREDENGINE SPEED CONSISTENCY
1.DEF: Signal incoherent
2.DEF: Non-compliance with emission control standards
NOTESConditions for applying fault finding procedures to stored faults:
The fault is declared present after the engine has been running for 10 seconds in
LPG mode.
Appearance conditions:
The fault appears when the difference between the hard-wired petrol computer engine
speed signal and the multiplex network engine speed is greater than 300 rpm.
Manipulate the wiring between the LPG computer and the petrol computer 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 computer and its
connections and carry out the same checks on the injection computer.
Repair if necessary.
Check the insulation and continuity on the wires of the following multiplex connections:
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 petrol computer
track 26 of the petrol computer
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance on the connection between:
LPG computer track F1 track C3, connector B, of the petrol computer
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_DF003 / GAZ3000_V10_DF003
LPG 3000
Program No: AB
Vdiag No: 08/10
MR-372-J84-17C000$354.mif

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-18
MR-372-J84-17C000$354.mif
V2
GAS INJECTION
Fault finding - Interpretation of faults
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
DF013
PRESENT
OR
STOREDTANK SOLENOID VALVE CIRCUIT
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 or fault DF018 + After ignition
feed supply or fault DF016 Impact detected are present or stored, deal with these
faults 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 AC015 Tank solenoid valve is executed.
Manipulate the wiring harness between the gas computer and the gas tank solenoid valves 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 solenoid
valves and their connections.
Repair if necessary.
Check the connection and condition of the LPG tank solenoid valve relay connector and its connections.
Replace the connector if necessary.
–check that the solenoid valve is supplied with +12V via track E3 of the LPG computer.
–check for + 12V on track D (for Mégane 2) or on track A (for Logan) of the LPG tank solenoid valve.
If necessary, check the insulation to earth and the continuity and absence of interference resistance on
the following connections:
For Mégane 2:
LPG tank solenoid valve track D
For Logan:
LPG tank solenoid valve track Atrack B5 of the LPG tank solenoid valve relay
track E3, LPG computer
track B5 of the LPG tank solenoid valve relay
track E3, LPG computer
If the fault is still present, check the intermediate connectors (R2 track 38, for Mégane 2), (R34 track 9,
for Logan).
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_DF013 / GAZ3000_V10_DF013

17C-19
MR-372-J84-17C000$354.mif
V2
GAS INJECTION
Fault finding - Interpretation of faults
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
DF013
CONTINUED
Check for earth on track E (for Mégane 2) or on track B (for Logan) of the LPG tank solenoid valve.
Repair if necessary.
With the engine running, check that the LPG tank solenoid valve relay clicks when LPG mode is selected.
If the fault is still present, check the insulation in relation to +12 V and the continuity and absence
of interference resistance on the following connections:
LPG computer track E4 track 2 of the LPG tank solenoid valve relay
Repair if necessary.
With the ignition on, check for + 12 volts on track C2 of the LPG computer.
Check the insulation in relation to + 12V and the continuity and absence of interference resistance on
the connection between:
LPG computer track C2 track 1 of the LPG tank solenoid valve relay
Repair if necessary.
With the ignition on, check that the relay and the fuel pump are supplied with + 12V.
Check the insulation in relation to + 12V and the continuity and absence of interference resistance on
the connection between:
For Mégane 2:
Fuel pump relay track 2
For Logan:
Fuel pump relay track B5track 3 of the LPG tank solenoid valve relay
track 3 of the LPG tank solenoid valve relay
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.

17C-20
MR-372-J84-17C000$354.mif
V2
GAS INJECTION
Fault finding - Interpretation of faults
LPG 3000
Program No: AB
Vdiag No: 08/10
17C
DF014
PRESENT
OR
STOREDGAUGE SUPPLY CIRCUIT
CC.0: Open circuit or short circuit to earth
CC.1: Short circuit to + 12 volts
NOTESSpecial note:
The system changes to forced petrol mode "LPG system fault" and refuses to change
to LPG mode while the fault is present.
Clear the faults from memory and then start the engine.
If the fault is still present, contact the Techline.
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_DF014 / GAZ3000_V10_DF014