PETROL INJECTION
Fault finding – Interpretation of faults17B
17B - 87V12 MR-372-J84-17B000$405.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48
DF637
PRESENT
OR
STOREDLPG CYLINDER 3 COMBUSTION MISFIRE
1 DEF: Destructive misfire
2 DEF: Pollutant misfire
3 DEF: Non-compliance with emission control standards
NOTESPriority when dealing with a number of faults:
– LPG fuel system: see 17C, LPG injection,
– ignition:
DF072 Cylinder 1 ignition coil circuit
DF073 Cylinder 2 ignition coil circuit
DF074 Cylinder 3 ignition coil circuit
DF075 Cylinder 4 ignition coil circuit
– flywheel signal:
DF154 Flywheel signal sensor circuit
DF125 "Torque sensor programming"
Check whether there are other cylinders with an LPG combustion misfire fault detected
by the tool before starting the following fault finding procedure.
Conditions for applying the fault finding procedure to stored faults:
The fault appears under the following conditions:
– there must be no further electrical faults,
– the programming must have been done, particularly the flywheel target,
– warm engine (minimum 75 °C),
– run the engine at idle speed with all electrical consumers switched on for
approximately 15 minutes.
Special note:
– catalytic converter misfire: OBD warning light flashes when the fault is present then
is continuously lit,
– pollutant combustion misfire: OBD warning light lit continuously.
– engine unstable, loss of power and vibrations.
Misfiring on
cylinder 3 only
The fault is probably due to a component that can only affect this cylinder:
check the cylinder 3 pencil coil,
check the condition and conformity of the spark plugs,
check the cylinder 3 LPG injector
If everything is in order, check the same components on cylinder 2 (to cover a possible
cylinder recognition error).
The fault is probably due to a component that affects a pair of cylinders:
– check the ignition coil circuit concerned (apply interpretation of fault
DF072 Cylinder 1 ignition coil circuit
DF073 Cylinder 2 ignition coil circuit
DF074 Cylinder 3 ignition coil circuit
DF075 Cylinder 4 ignition coil circuit
– check the condition and conformity of the spark plugs.
Combustion
misfires in
cylinders 2 and 3
AFTER REPAIRFollow the instructions to confirm repair.
Deal with any other faults.
Clear the stored faults.
PETROL INJECTION
Fault finding – Interpretation of faults17B
17B - 88V12 MR-372-J84-17B000$405.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48
DF638
PRESENT
OR
STOREDLPG CYLINDER 4 COMBUSTION MISFIRE
1 DEF: Destructive misfire
2 DEF: Pollutant misfire
3 DEF: Non-compliance with emission control standards
NOTESPriority when dealing with a number of faults:
– LPG fuel system: see 17C, LPG injection,
– ignition:
DF072 Cylinder 1 ignition coil circuit
DF073 Cylinder 2 ignition coil circuit
DF074 Cylinder 3 ignition coil circuit
DF075 Cylinder 4 ignition coil circuit
– flywheel signal:
DF154 Flywheel signal sensor circuit
DF125 "Torque sensor programming"
Check whether there are other cylinders with an LPG combustion misfire fault detected
by the tool before starting the following fault finding procedure.
Conditions for applying the fault finding procedure to stored faults:
The fault appears under the following conditions:
– there must be no further electrical faults,
– the programming must have been done, particularly the flywheel target,
– warm engine (minimum 75 °C),
– run the engine at idle speed with all electrical consumers switched on for
approximately 15 minutes.
Special note:
– catalytic converter misfire: OBD warning light flashes when the fault is present then
is continuously lit,
– pollutant combustion misfire: OBD warning light lit continuously.
– engine unstable, loss of power and vibrations.
Misfiring on
cylinder 4 only
The fault is probably due to a component that can only affect this cylinder:
– check the pencil coil of cylinder 4,
– check the condition and conformity of the spark plugs,
– check the cylinder 4 LPG injector
If everything is in order, check the same components on cylinder 1 (to cover a possible
cylinder recognition error).
The fault is probably due to a component that affects a pair of cylinders:
– check the ignition coil circuit concerned (apply interpretation of fault
DF072 Cylinder 1 ignition coil circuit
DF073 Cylinder 2 ignition coil circuit
DF074 Cylinder 3 ignition coil circuit
DF075 Cylinder 4 ignition coil circuit
– check the condition and conformity of the spark plugs.
Combustion
misfires on
cylinders 1 and 4
AFTER REPAIRFollow the instructions to confirm repair.
Deal with any other faults.
Clear the stored faults.
PETROL INJECTION
Fault finding – Interpretation of faults17B
17B - 89V12 MR-372-J84-17B000$405.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48
DF639
PRESENT
OR
STOREDCOMBUSTION MISFIRE IN LPG MODE
1 DEF: Destructive misfire
2 DEF: Pollutant misfire
3 DEF: Non-compliance with emission control standards
NOTESPriority when dealing with a number of faults:
– LPG fuel system: see 17C, LPG injection,
– ignition:
DF072 Cylinder 1 ignition coil circuit
DF073 Cylinder 2 ignition coil circuit
DF074 Cylinder 3 ignition coil circuit
DF075 Cylinder 4 ignition coil circuit
– flywheel signal:
DF154 Flywheel signal sensor circuit
DF125 "Torque sensor programming"
DF059 Combustion misfire in cylinder 1,
DF060 Combustion misfire in cylinder 2,
DF061 Combustion misfire in cylinder 3,
DF062 Combustion misfire in cylinder 4.
Conditions for applying the fault finding procedure to stored faults:
The fault appears under the following conditions:
– there must be no further electrical faults,
– the programming must have been done, particularly the flywheel target,
– warm engine (minimum 75 °C),
– run the engine at idle speed with all electrical consumers switched on for approximately
15 minutes.
Special note:
– catalytic converter misfire: OBD warning light flashes when the fault is present then is
continuously lit,
– pollutant combustion misfire: OBD warning light lit continuously.
– engine unstable, loss of power and vibrations.
Check the LPG injectors.
Check the condition and conformity of the spark plugs.
Check the ignition pencil coils.
If the fault is still present, carry out the following checks:
– check the flywheel sensor,
– check the condition and cleanliness of the flywheel,
– check the flywheel sensor mounting
– check the sensor/flywheel air gap,
– check the cylinder compression's,
– check the LPG fuel system,
– check the complete ignition system (see MR 364 or 370 Mechanics, 17A, Ignition),
– check the hydraulic tappets if there is camshaft noise (see MR 364 or 370 Mechanics, 11A, Top and front of engine).
If the fault is still present, deal with the other faults, then proceed to the conformity check.
AFTER REPAIRFollow the instructions to confirm repair.
Deal with any other faults.
Clear the stored faults.
PETROL INJECTION
Fault finding – Conformity check17B
17B-92V12 MR-372-J84-17B000$450.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48
FUEL CIRCUIT SUB-FUNCTION
NOTESOnly check conformity after a thorough check with the diagnostic tool.
The values shown in this conformity check are given as a guide.
Application condition: engine off, ignition on.
Order FunctionParameter or Status
Checked or ActionDisplay and notes Fault finding
1Engine
speedPR055: Engine speedIndicates the engine's speed
of rotation in rpm.
0 rpm < PR055 < 500 rpmIn the event of a fault
apply the interpretation
for DF154 Flywheel
signal sensor circuit.
2
Motorised
throttlePR014: Idling speed
correctionShows engine idling speed
correction value.
PR014= 0rpm.
The idle speed regulator
performs all of the
calculations that allow the idle
speed actuator to be
controlled physically: the
motorised throttle. The
functional component of the
regulator is adaptive
(variation programming and
ageing).WITHOUT
3 PR054: Idle speed
regulationACTIVE
INACTIVEIf ACTIVE apply the
interpretation for ET054
Idle speed regulation.
4 PR010: Idle speed
regulation
setpointThe idle speed regulation
setpoint depends on the
coolant and oil temperature,
the position of the gear lever,
and which electrical
consumers are operating.
752 rpm. < PR010
< 1216 rpm.
If a manifold pressure sensor
fault is present or stored, the
idle speed setting is 896 rpm.In the event of a fault
apply the interpretation
for ET054, Idle speed
regulation.
JSAA741.0
PETROL INJECTION
Fault finding – Conformity check17B
17B-101V12 MR-372-J84-17B000$450.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48
EMISSION CONTROL/OBD SUB-FUNCTION (continued)
Order FunctionParameter or Status
Checked or ActionDisplay and notes Fault finding
9
Oxygen
sensorAC018: Upstream O
2
sensor heatingThe upstream
oxygen sensor
should heat upIn the event of a fault, apply
the interpretation of DF082
Upstream O
2 sensor
heating circuit.
10 AC019: Downstream O
2
sensor heatingThe downstream
oxygen sensor
should heat upIn the event of a fault, apply
the interpretation of DF083
Downstream O
2 sensor
heating circuit.
11Oil vapour
defreeze
resistorET542: Oil vapour
defreeze resistorCONNECTED
NOT CONNECTEDIn the event of a fault, apply
the interpretation for fault
DF612 Oil vapour defreeze
resistor circuit.
JSAA741.0
PETROL INJECTION
Fault finding – Conformity check17B
17B-113V12 MR-372-J84-17B000$450.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48
FUEL CIRCUIT SUB-FUNCTION
NOTESOnly check conformity after a thorough check with the diagnostic tool.
The values shown in this conformity check are given as a guide.
Application conditions: Engine warm, at idle speed.
Order FunctionParameter or Status
Checked or ActionDisplay and notes Fault finding
1Engine
speedPR055: Engine
speedIndicates the engine's speed of
rotation in rpm.
700 rpm < PR055 < 6500 rpmIn the event of a
fault, apply the
interpretation for
DF154 Flywheel
signal sensor
circuit.
2
Motorised
throttlePR014: Idling
speed
correctionShows engine idling speed
correction value.
0 rpm < PR014 < 224 rpm.
The idle speed regulator performs all
of the calculations that allow the idle
speed actuator to be controlled
physically: the motorised throttle.
This regulator has a built-in adaptive
component (variation and ageing
programming).WITHOUT
3ET054: Idle speed
regulationACTIVE
INACTIVEIf INACTIVE apply
the interpretation for
ET054 Idling speed
regulation.
4 PR010: Idle speed
regulation
setpointThe idle speed regulation setpoint
depends on the coolant and oil
temperature, the position of the gear
lever, and which electrical
consumers are operating.
752 rpm < PR010 < 1216 rpm.
If a manifold pressure sensor fault is
present or stored, the idle speed
setting is 896 rpm.In the event of a
fault, apply the
interpretation of
ET054 Idle speed
regulation.
JSAA741.0
PETROL INJECTION
Fault finding – Conformity check17B
17B - 122V12 MR-372-J84-17B000$495.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48
EMISSION CONTROL/OBD SUB-FUNCTION (continued)
Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
9
Oxygen
sensorAC018: Upstream O
2
sensor heatingThe upstream
oxygen sensor
should heat upIn the event of a fault, apply the
interpretation for DF082
Upstream O2 sensor heating
circuit.
10 AC019: Downstream
O
2 sensor
heatingThe downstream
oxygen sensor
should heat upIn the event of a fault, apply the
interpretation of DF083
Downstream O2 sensor
heating circuit.
11Oil vapour
defreeze
resistorET542: Oil vapour
defreeze
resistorCONNECTED
NOT CONNECTEDIf there is a fault, apply the
interpretation for the fault DF612
Oil vapour defreeze resistor
circuit.
JSAA741.0
PETROL INJECTION
Fault finding – Status summary table17B
17B - 133V12 MR-372-J84-17B000$540.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48
*AT: automatic transmission
*RCH: passenger compartment heating resistorTool Status Diagnostic tool title
ET074OBD warning light lit by AT*
ET075Pedal released and throttle closed
ET076Starting
ET077Impact detected
ET079Air conditioning present
ET081Accelerator pedal position
ET082Motorised throttle position
ET083Camshaft dephaser in defect mode
ET084Camshaft dephaser
ET086Camshaft dephaser control
ET088Compressor actuation request
ET089Flywheel target programming
ET111RCH* number set
ET112RCH* cut-off
ET405Clutch pedal switch
ET415Deactivation of cruise control/speed limiter
ET542Oil vapour defreeze resistor
ET543Coolant pump control
ET564Type 1 defect mode
ET565Type 2 defect mode
ET566Type 3 defect mode
ET567Type 4 defect mode
ET568Type 5 defect mode
ET569Type 6 defect mode
ET582LPG combustion misfire fault finding
ET703Cruise control/speed limiter buttons
ET704Brake switch No. 1
ET705Brake switch No. 2
JSAA741.0