Page 177 of 230

PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 177
PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 177V9 MR-372-J84-17B050$611.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
ET056
CONTINUED 2
Check:
– the condition of the air filter,
– that the air inlet circuit is not blocked,
– the condition and conformity of the spark plugs,
– the sealing between the throttle valve and inlet manifold,
– the manifold pressure sensor sealing,
– the fuel vapour absorber bleed, which must not be jammed open,
– the fuel vapour absorber bleed system sealing,
– the brake servo system sealing,
– the cylinder head oil vapour recovery system sealing,
– the sealing between the inlet manifold and cylinder head,
– the exhaust pipe sealing between the cylinder head and catalytic converter.
– the fuel flow rate and pressure.
If the idle speed is not stable, check:
– the timing adjustment,
– the hydraulic tappets if there is camshaft noise (see MR 364 or 370 Mechanics, 11A, Top and front of engine),
– the cylinder compressions.
Drive the vehicle to check the repair.
Repair the defective components.
AFTER REPAIRRepeat the conformity check from the start.
Page 178 of 230

PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 178
PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 178V9 MR-372-J84-17B050$611.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
ET061
CYLINDER 1 RECOGNITION
COMPLETE
NOT COMPLETE
NOTESThere must be no present or stored faults.
Check the cleanliness and condition of the camshaft sensor connectors.
Repair if necessary.
Check the cleanliness and condition of the camshaft sensor.
Repair if necessary.
Check for the + 12 V feed on track 3 of the camshaft sensor connector with the ignition on.
If +12V is not present:
– Switch off the ignition,
– disconnect the CN connector in the Protection and Switching Unit,
– check the cleanliness and condition of the connections,
– using the Universal bornier, check the continuity on the following connection:
Injection computer, connectorB, track M2 track 3 of the camshaft sensor.
Protection and Communication Unit,
connector CN, track 6
Reconnect the Protection and Switching Unit connector.
If the + 12 V feed is still not present on track 3 of the camshaft sensor connector with the ignition on, there is a
fault with the Protection and Switching Unit.
Contact the Techline.
Switch off the ignition.
Disconnect the computer. Check the cleanliness and condition of the connections.
Using the Universal bornier, check the insulation and continuity of the following connections:
Injection computer, connectorC, track E2 track 1 of the camshaft sensor
Injection computer, connectorC, track F1 track 2 of the camshaft sensor
Repair if necessary.
AFTER REPAIRRepeat the conformity check from the start.
S3000_V4C_ET061/S3000_V54_ET061
Page 179 of 230

PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 179
PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 179V9 MR-372-J84-17B050$611.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
ET062
FLYWHEEL SIGNAL
DETECTED
NOT DETECTED
NOTESThere must be no present or stored faults.
Information: if the flywheel has been replaced or disassembled, reinitialise the
flywheel target programming using command RZ005 Programming.
Check the mounting and positioning of the TDC sensor (see MR 364 or 370 Mechanical, 11A, top and front
of engine).
Repair if necessary.
Check the cleanliness and condition of the TDC sensor and its connections.
Check the condition of the wire.
Repair if necessary.
Disconnect the battery and the injection computer.
Check the cleanliness and condition of the connections.
Using the Universal bornier, check the insulation and continuity of the following connections:
Injection computer, connectorB, track E4 track 2 of the engine speed sensor
Injection computer, connectorB, track F3 track 1 of the engine speed sensor
Repair if necessary.
Measure the resistance of the TDC sensor between tracks 1 and 2.
Replace the TDC sensor if the resistance is not between 200 and 270Ω at 23°C.
If the sensor has been replaced, reset the flywheel signal programming.
Carrying out the flywheel target programming:
– Decelerate a first time with injection cut-off (i.e. feet off the brake, accelerator pedal and clutch pedals) between
3500 and 3000 rpm, in 3rd gear for a manual gearbox and 2nd for automatic transmission, for at least
5 seconds.
– Decelerate a second time with injection cut-off (i.e. feet off the brake, accelerator pedal and clutch pedals)
between 2400 and 2000 rpm for K4 engines and between 1800 and
1400 rpm for F4R engines, in 3rd gear for a manual gearbox and 2nd for automatic transmission, for at least
5 seconds.
When the work is completed, check that status ET089 Flywheel target programming is COMPLETED.
(*This is the moment when, during deceleration with no load, the engine drops to idling speed and recovers torque).
AFTER REPAIRRepeat the conformity check from the start.
S3000_V4C_ET062/S3000_V54_ET062
Page 180 of 230

PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 180
PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 180V9 MR-372-J84-17B050$611.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
ET067
LPG READY
YES
NO
IMPORTANT
Before working on an LPG supply circuit component, always refer to the appropriate section of the
Workshop Repair Manual (see17C, LPG Injection, Introduction, Safety advice for all operations).
NOTESThere must be no present or stored faults.
Ignition on, engine stopped.
Check:
– the LPG tank solenoid valve (see DF013 Tank solenoid valve circuit),
– the general relay (see DF007 Main relay circuit),
– the LPG expansion valve solenoid valve (see DF103 LPG expansion valve solenoid valve),
– the LPG pressure sensor (see DF092 Expansion valve downstream pressure sensor circuit),
– the LPG pressure in the tank (see DF031 LPG pressure downstream of expansion valve).
These faults are detected by the LPG injection computer.
Repair or replace the faulty components, if necessary.
Check:
– the LPG filling hoses,
– the supply hoses upstream of the expansion valve,
– the expansion valve,
– the hoses downstream of the expansion valve.
Repair or replace the faulty components, if necessary.
If the status is still not correct, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.
S3000_V4C_ET067/S3000_V54_ET067
Page 181 of 230

PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 181
PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 181V9 MR-372-J84-17B050$611.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
ET068
LPG TANK EMPTY
YES
NO
IMPORTANT
Before working on an LPG supply circuit component, always refer to the appropriate section of the
Workshop Repair Manual (see17C, LPG Injection, Introduction, Safety advice 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 LPG injection computer (see17C, LPG injection).
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).
This fault is detected by the LPG injection computer.
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 REPAIRRepeat the conformity check from the start.
S3000_V4C_ET068/S3000_V54_ET068
Page 182 of 230

PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 182
PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 182V9 MR-372-J84-17B050$611.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
ET071
TRANSITION FROM PETROL MODE TO LPG MODE
IN PROGRESS
COMPLETE
IMPORTANT
Before working on an LPG supply circuit component, always refer to the appropriate section of the
Workshop Repair Manual (see17C, LPG Injection, Introduction, Safety advice for all operations).
NOTESThere must be no present or stored faults.
Ignition on, engine stopped.
Special note:
The duration of the transition varies according to the outside temperature.
Check that the LPG tank solenoid valve clicks when LPG mode is entered.
If the LPG tank solenoid valve does not click, check:
– the LPG 10A fuse F15,
– the general relay (see DF007 Main relay circuit),
– the LPG tank solenoid valve wiring (see DF013 Solenoid valve tank circuit).
These faults are detected by the LPG injection computer.
Repair or replace the faulty components, if necessary.
If the status is still not correct, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.
S3000_V4C_ET071/S3000_V54_ET071
Page 183 of 230
PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 183
PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 183V9 MR-372-J84-17B050$611.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
ET072
TRANSITION FROM LPG MODE TO PETROL MODE
IN PROGRESS
COMPLETE
NOTESThere must be no present or stored faults.
Ignition on, engine stopped.
Check that the fuel pump starts when petrol mode is entered.
Check status ET025 Fuel pump changes to ACTIVE.
If the fuel pump does not start, check:
– the fuel pump cut-off relay (see DF024 Fuel pump cut-off relay circuit),
– the petrol computer (see17B, Petrol injection).
This fault is detected by the LPG injection computer.
Repair or replace the faulty components, if necessary.
If the status is still not correct, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.
S3000_V4C_ET072/S3000_V54_ET072
Page 184 of 230

PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 184
PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 184V9 MR-372-J84-17B050$611.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
ET073
CONDITIONS FOR SWITCHING TO LPG MODE
AUTHORISED
INHIBITED
IMPORTANT
Before working on an LPG supply circuit component, always refer to the appropriate section of the
Workshop Repair Manual (see17C, LPG Injection, Introduction, Safety advice for all operations).
NOTESThere must be no present or stored faults.
Ignition on, engine stopped.
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 and DF007 Main relay circuit.
These faults are detected by the LPG injection computer.
Manipulate the wiring harness between the LPG computer and the petrol computer until a change in status is
noted.
Check the insulation, continuity and ensure the absence of interference resistance on the connections
between:
Petrol computer connectorB, track K3 track A1 of the LPG computer
Petrol computer connectorB, track K4 track A2 of the LPG computer
Repair if necessary.
If the status is still not correct, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.
S3000_V4C_ET073/S3000_V54_ET073