PETROL INJECTION
Fault finding - System operation
17B
17B - 14
PETROL INJECTION
Fault finding - System operation
17B
17B - 14V9 MR-372-J84-17B050$094.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
3. OBD management
Managed OBD programming is as follows:
– catalytic converter operational fault finding,
– upstream oxygen sensor operational fault finding,
– misfiring fault finding with two levels of detection: pollutant misfiring and catalytic converter breakage
misfiring,
– fuel supply system fault finding.
The misfiring and fuel supply system fault finding is performed continuously.
The operational fault finding for the upstream sensor and the catalytic converter can be only be carried out once per
journey, and can never occur at the same time.
OBD fault manager:
The OBD faults manager does not replace or modify conventional electrical fault management. Perform to comply
with OBD standard.
The requirements are:
●storing OBD faults,
●illuminate the OBD warning light for all faults where the OBD emission thresholds are exceeded,
●flash the OBD warning light for misfire faults damaging the catalytic converter.
Operating principle.
If a fault is detected and confirmed during 3 consecutive journeys then:
●an OBD stored fault is raised,
●the OBD fault warning light receives a request to be lit continuously. This request is only recognised if the
fault in question is authorised to activate the OBD warning light.
To deactivate the warning light, no OBD faults should be detected for 3 consecutive journeys.
The electrical fault finding checks taken into consideration by the OBD faults manager are as follows:
– pressure,
– turbocharging pressure,
– coolant temperature,
– air temperature
– upstream sensor,
– downstream sensor,
– upstream sensor heating,
– downstream sensor heating,
–injector1,
–injector2,
–injector3,
–injector4,– ignition coil 1,
– ignition coil 2,
– ignition coil 3,
– ignition coil 4,
– petrol pump,
– wastegate,
– canister bleed,
– air line system,
– turbocharging system
– pinking sensor,
– camshaft dephaser.
PETROL INJECTION
Fault finding - Fault summary table
17B
17B-32
PETROL INJECTION
Fault finding - Fault summary table
17B
17B-32V9 MR-372-J84-17B050$282.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
Tool faultAssociated
DTC codeDescriptionLevel 2 fault
warning light
(Red brake
warning light)Level 1 fault
warning light
(Orange
injection
warning light)No warning
light onOBD
warning light
DF102 2502Signal: power sig.*
available1.DEF
DF105 0585Cruise control/
speed limiter on/off
circuit1.DEF
DF106 0575Cruise control/
speed limiter
function selectors
on steering wheel1.DEF
DF109 0313Low fuel level
misfiring1.DEF/
2.DEF/
3.DEF
DF119 0340Camshaft sensor
signal1.DEF/2.DEF/
3.DEF/4.DEF
DF126 1604Passenger
compartment
heating resistor
(RCH)1.DEF
DF138 0830 Clutch pedal switch 1.DEF
DF154 0335Flywheel signal
sensor circuit1.DEF/2.DEF/
3.DEF
DF196 0225Pedal sensor
circuit gang 11.DEF
CO/CC.0/
CC.1CO/CC.0/
CC.1
2.DEF
DF198 2120Pedal sensor
circuit gang 2CO
CC.0/ CC.1CO
CC.0/ CC.1
DF228 0504 Brake signal 1.DEF/2.DEF
DF232 0530Refrigerant
pressure sensor
circuit1.DEF
DF361 0351Ignition coil control
- cylinders 1 - 4CO.0/CC.1
1.DEFCO.0/CC.1
1.DEF
DF362 0352Ignition coil control
- cylinders 2 - 3CO.0/CC.1
1.DEFCO.0/CC.1
1.DEF
DF377 C115Petrol↔ LPG
connection1.DEF/2.DEF
DF394 0420Catalytic converter
operating fault1.DEF/
2.DEF
DF398 0170Fuel circuit
operating faultCO/ 1.DEF
PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-94
PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-94V9 MR-372-J84-17B050$423.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54PETROL INJECTION
Fault finding - Interpretation of faults
DF361
PRESENT
OR
STOREDCYLINDER 1 - 4 IGNITION COIL CIRCUIT
CO.0: Open circuit or short circuit to earth
CC.1: Short-circuit to + 12 V
1.DEF: Non-compliance with emission control standards
NOTESPriority when dealing with a number of faults:
Deal with faults DF046 Battery voltage, DF084 Actuator relay control circuit or
DF085 Fuel pump relay control circuit first whether they are present or stored.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present with the engine running for 4 seconds at 600 rpm or
0.4 seconds at 6000 rpm.
Special note:
–the OBD warning light is lit,
–level 1 fault warning light on.
CC.0: The coil is continuously supplied, risk of destruction
CC.1: The coil is not supplied, injection cut-off on cylinders 1 and 4, destruction of the
catalytic converter possible and prevention of On board diagnostics.
Disconnect the connector from the pencil coil of cylinders 1 and 4.
Check the cleanliness and condition of the pencil coils and their connections.
Repair if necessary.
Measure the primary and secondary resistance of the cylinder 1 pencil coil.
Replace the cylinder 1 coil if the primary resistance is not 540 mΩ ±30mΩ or the secondary resistance is not
10.7 kΩ ± 1.6 kΩ (K4 engines).
Replace the cylinder 1 coil if the primary resistance is not 520 mΩ ±50mΩ or the secondary resistance is not
6.7 kΩ ± 0.67 kΩ (F4 engines).
Switch off the ignition and disconnect the injection computer.
Check the cleanliness and condition of the connections.
Repair if necessary.
Use the "Universal bornier" to check the insulation and continuity of the following connections:
Injection computer, connector C, track M4 track 2 of coil 1
Coil 4 track 2 track 1 of coil 1
If the fault is still present, replace the faulty pencil coil.
AFTER REPAIRFollow the instructions to confirm repair.
Deal with any other faults.
Clear the stored faults.
S3000_V4C_DF361/S3000_V54_DF361
MR-372-J84-17B050$423.mif
PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-96
PETROL INJECTION
Fault finding - Interpretation of faults
17B
17B-96V9 MR-372-J84-17B050$423.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
DF362
PRESENT
OR
STOREDCYLINDER 2 - 3 IGNITION COIL CIRCUIT
CO.0: Open circuit or short circuit to earth
CC.1: Short-circuit to + 12 V
1.DEF: Non-compliance with emission control standards
NOTESPriority when dealing with a number of faults:
Deal with faults DF046 Battery voltage, DF084 Actuator relay control circuit or
DF085 Fuel pump relay control circuit first whether they are present or stored.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present with the engine running for 4 seconds at 600 rpm or
0.4 seconds at 6000 rpm.
Special note:
–the OBD warning light is lit,
–level 1 fault warning light illuminated.
CC.0: The coil is continuously supplied, risk of destruction.
CC.1: The coil is not supplied, injection cut-off on cylinders 2 and 3, destruction of the
catalytic converter possible and inhibition of OBD fault finding.
Disconnect the connector from the pencil coils of cylinders 2 and 3.
Check the cleanliness and condition of the pencil coils and their connections.
Repair if necessary.
Measure the primary and secondary resistance of the cylinder 2 pencil coil.
Replace the cylinder 2 coil if the primary resistance is not 540 mΩ ±30mΩ or the secondary resistance is not
10.7 kΩ ± 1.6 kΩ (K4 engines).
Replace the cylinder 2 coil if the primary resistance is not 520 mΩ ±50mΩ or the secondary resistance is not
6.7 kΩ ± 0.67 kΩ (F4 engines).
Switch off the ignition and disconnect the injection computer.
Check the cleanliness and condition of the connections.
Repair if necessary.
Use the "Universal bornier" to check the insulation and continuity of the following connections:
Computer, connectorC, track M3 track 2 of coil 2
Coil 3 track 2 track 1 of coil 2
If the fault is still present, replace the faulty pencil coil.
AFTER REPAIRFollow the instructions to confirm repair.
Deal with any other faults.
Clear the stored faults.
S3000_V4C_DF362/S3000_V54_DF362
PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 174
PETROL INJECTION
Fault finding - Interpretation of statuses
17B
17B - 174V9 MR-372-J84-17B050$611.mif
S3000 Injection
Program No.: AD
Vdiag No.: 4C / 54
ET054
IDLE SPEED REGULATION
ACTIVE
INACTIVE
NOTESThere must be no present or stored faults.
Check parameters: PR030 Accelerator pedal position,
PR035 Atmospheric pressure,
PR058 Air temperature,
PR064 Coolant temperature,
PR118 Measured throttle position gang 1,
PR119 Measured throttle position gang 2.
Check that all these parameters are completely correct.
IDLE SPEED TOO
HIGH
Check:
– the engine oil level (too high ⇒ oil combustion),
– that the restrictions are present in the oil vapour rebreathing circuit,
– 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 sealing between the inlet manifold and cylinder head,
– the oil vapour recovery circuit sealing between the inlet manifold and cylinder head,
– the fuel pressure and flow (see MR 364 or 370 Mechanics, 17B, Petrol injection),
– the condition and cleanliness of the injectors,
– the cylinder compressions,
– the timing adjustment,
– the hydraulic tappets if there is camshaft noise (see MR 364 or 370 Mechanics, 11A, Top and front of engine).
Repair the defective component if necessary.
AFTER REPAIRRepeat the conformity check from the start.
S3000_V4C_ET054/S3000_V54_ET054
PETROL INJECTION
Fault finding - Fault Finding Chart
17B
17B-229
PETROL INJECTION
Fault finding - Fault Finding Chart
17B
17B-229V9 MR-372-J84-17B050$940.mif
S3000 Injection
Program No.: AD
Vdiag No.:4C / 54
ALP 3 Idle speed faults
NOTESFollow ALP 3 after a complete check with the diagnostic tool.
WARNING
Never drive the vehicle without checking first that there are no throttle valve
faults.
Check that the oil level is not too high.
Check the inlet system sealing, from the throttle to the cylinder head.
Check that the fuel vapour absorber bleed is not disconnected or jammed open.
Check that there are no leaks in the fuel vapour absorber bleed system.
Check that there are no leaks in the braking assistance system.
Check that there are no leaks in the oil vapour recovery system (manifold/cylinder head).
Check that there are no leaks around the manifold pressure sensor.
Check that there are no leaks around the air temperature sensor.
Check that the air filter is not clogged.
Check that the air inlet circuit is not blocked.
Check that throttle valve is not clogged.
Check the condition of the pencil coils and the cleanliness of their connections.
Check the electrical resistance of the pencil coil secondary circuits.
Check the condition and conformity of the spark plugs.
Check the mounting, cleanliness and condition of the flywheel signal sensor.
Check the flywheel signal sensor air gap.
Check the condition and cleanliness of the flywheel.
Check that the tank vent is not blocked.
Check that the fuel is of the correct type.
Check that there are no leaks in the fuel system, from the tank to the injectors.
Check that there are no kinked hoses (especially after a removal operation).
Check the fuel flow rate and pressure.
Check that the injectors are working properly.
Check that the exhaust system is not blocked and the catalytic converter not clogged.
Check the timing setting.
Check the cylinder compressions.
Check the hydraulic tappets if there is camshaft noise.
AFTER REPAIRRepeat the conformity check from the start.
S3000_V4C_ALP3/S3000_V54_ALP3
PETROL INJECTION
Fault finding - Fault Finding Chart
17B
17B-230
PETROL INJECTION
Fault finding - Fault Finding Chart
17B
17B-230V9 MR-372-J84-17B050$940.mif
S3000 Injection
Program No.: AD
Vdiag No.:4C / 54
ALP 4 Faults occurring while driving
NOTESFollow ALP4 after a complete check using the diagnostic tool.
(Use the relevant section in the Workshop Repair Manual to carry out certain
operations).
WARNING
Never drive the vehicle without checking first that there are no throttle valve
faults.
Check that the oil level is not too high.
Check the condition of the pencil coils and the cleanliness of their connections.
Check the electrical resistance of the pencil coil secondary circuits.
Check the condition and conformity of the spark plugs.
Check the mounting, cleanliness and condition of the flywheel signal sensor.
Check the flywheel signal sensor air gap.
Check the condition and cleanliness of the flywheel.
Check that the air filter is not clogged.
Check that the air inlet circuit is not blocked.
Check that throttle valve is not clogged.
Check the inlet system sealing, from the throttle to the cylinder head.
Check that the fuel vapour absorber bleed is not disconnected or jammed open.
Check that there are no leaks in the fuel vapour absorber bleed system.
Check that there are no leaks in the braking assistance system.
Check that there are no leaks in the oil vapour recovery system (manifold/cylinder head).
Check that there are no leaks around the manifold pressure sensor.
Check that there are no leaks around the air temperature sensor.
Check that the tank vent is not blocked.
Check that the fuel is of the correct type.
Check that there are no leaks in the fuel system, from the tank to the injectors.
Check that there are no kinked hoses (especially after a removal operation).
Check the fuel flow rate and pressure.
Check that the injectors are working properly.
Check that the exhaust system is not blocked and the catalytic converter not clogged.
Check the timing setting.
Check the cylinder compressions.
Check the hydraulic tappets if there is camshaft noise.
AFTER REPAIRRepeat the conformity check from the start.
S3000_V4C_ALP4/S3000_V54_ALP4