13B-341V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR784
PR785
PR786
PR787
PR788
PR789
PR790
PR791
PR792
PR793DF312 RECORD NO. 1
DF312 RECORD NO. 2
DF312 RECORD NO. 3
DF312 RECORD NO. 4
DF312 RECORD NO. 5
DF312 RECORD NO. 6
DF312 RECORD NO. 7
DF312 RECORD NO. 8
DF312 RECORD NO. 9
DF312 RECORD NO. 10
PARAMETER
DEFINITIONThese parameters are shown in Km.
NOTESSpecial notes:
These parameters must only be interpreted for DF312 Speed request if it is present
or stored.
These parameters exist only in Vdiag48.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature
> 80°C, without electrical consumers
In the event of a fault, consult the interpretation of fault DF312 Speed request.
These parameters are used for looking up the history of the last ten particle filter warning light activations
Each parameter from PR784 to PR793 contains a record of the vehicle mileage when the particle filter warning
light illuminates. The appearance of fault DF312 Speed request is associated with each of these parameters.
PR784 to PR793 operate through successive copying (when the particle filter warning light comes on, the value of
PR784 is copied to PR785, the value of PR785 is copied to PR786 and so on).
When there are more than ten records, the value of PR793 DF312 record no. 10 is cleared. The new mileage is
allocated to PR784.
If none of the parameters between PR784 and PR793 is available in the sub-function, this means that no data has
been saved. The parameters appear in the sub-function when they have a value above zero.
EDC16C36_V48_PR784/EDC16C36_V48_PR785/EDC16C36_V48_PR786/EDC16C36_V48_PR787/EDC16C36_V48_PR788/
EDC16C36_V48_PR789/EDC16C36_V48_PR790/EDC16C36_V48_PR791/EDC16C36_V48_PR792/EDC16C36_V48_PR793/
EDC16C36_V58_PR784/EDC16C36_V58_PR785/EDC16C36_V58_PR786/EDC16C36_V58_PR787/EDC16C36_V58_PR788/
EDC16C36_V58_PR789/EDC16C36_V58_PR790/EDC16C36_V58_PR791/EDC16C36_V58_PR792/EDC16C36_V58_PR793
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 48, 58
13B-343V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
*reg: regeneration
PR816
PR817
PR818
PR819
PR820
PR821
PR822
PR823
PR824
PR825REGENERATION START RECORD NO. 1
REGENERATION START RECORD NO. 2
REGENERATION START RECORD NO. 3
REGENERATION START RECORD NO. 4
REGENERATION START RECORD NO. 5
REGENERATION START RECORD NO. 6
REGENERATION START RECORD NO. 7
REGENERATION START RECORD NO. 8
REGENERATION START RECORD NO. 9
REGENERATION START RECORD NO. 10
PARAMETER
DEFINITIONThese parameters are shown in Km.
NOTESSpecial notes:
For Vdiag48:
These parameters must only be interpreted using ALP11 Particle filter warning light
comes on too often.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature
> 80°C, without electrical consumers
These parameters are used so that the history of the last ten regeneration starts when driving can be found.
EDC16C36_V48_PR816/EDC16C36_V48_PR817/EDC16C36_V48_PR818/EDC16C36_V48_PR819/EDC16C36_V48_PR820/
EDC16C36_V48_PR821/EDC16C36_V48_PR822/EDC16C36_V48_PR823/EDC16C36_V48_PR824/EDC16C36_V48_PR825/
EDC16C36_V50_PR816/EDC16C36_V50_PR817/EDC16C36_V50_PR818/EDC16C36_V50_PR819/EDC16C36_V50_PR820/
EDC16C36_V50_PR821/EDC16C36_V50_PR822/EDC16C36_V50_PR823/EDC16C36_V50_PR824/EDC16C36_V50_PR825/
EDC16C36_V58_PR816/EDC16C36_V58_PR817/EDC16C36_V58_PR818/EDC16C36_V58_PR819/EDC16C36_V58_PR820/
EDC16C36_V58_PR821/EDC16C36_V58_PR822/EDC16C36_V58_PR823/EDC16C36_V58_PR824/EDC16C36_V58_PR825
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58
13B-369
AFTER REPAIRRepeat the conformity check in the interpretation of statuses and parameters
V9 MR-372-J84-13B450$170.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
AC011RAIL PRESSURE REGULATOR
NOTESPerform this fault finding procedure:
– following interpretation of an unresolved fault
– following an inconsistency recorded in the parameters,
– following a customer complaint (starting problems, engine speed instability, injection
noise).
Ignition on and engine stopped.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
Step 1
Check the continuity and absence of interference resistance on the following connections:
– Connection code 3HI between components 1105 and 120.
– Connection code 3FB between components 1105 and 983.
Run command AC011. If there is a slight whistling noise and clicking from the pressure regulator, go to step 2,
otherwise, check that the computer output stage is operating correctly:
Vehicle under + after ignition feed, clear the faults displayed by the diagnostic tool.
With the voltmeter in the direct current position:
With the pressure regulator connected, connect the voltmeter earth lead to connection 3HI of component 1105
and the positive lead to connection 3FB.
Run command AC011; the voltmeter should display four successive voltages of 2.2 V ± 0.2 V.
If the measurement is not correct, contact the Techline.
STEP 2
EDC16C36_V44_AC011/EDC16C36_V4C_AC011/EDC16C36_V48_AC011/EDC16C36_V50_AC011/EDC16C36_V54_AC011/
EDC16C36_V58_AC011EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-380V9 MR-372-J84-13B450$180.mif
13B
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
NOTESOnly refer to these customer complaints after a complete check with the diagnostic
tool.
No dialogue with engine management computer ALP1
Starting difficult or impossibleALP2
Poor performanceALP4
Irregular engine operationALP5
External leaks from the fuel circuit ALP6
Rough idleALP7
Oil leaks from the turbocharger ALP8
Noises of the turbochargerALP9
Exhaust fumesALP10
Particle filter warning light comes on too often ALP11
DIESEL INJECTION
Fault finding – Customer complaints
13B-385
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
V9 MR-372-J84-13B450$190.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP2
CONTINUED 2
Is there diesel fuel in the fuel tank?Fill the tank with diesel fuel.
Bleed the low and high pressure diesel circuit.
Does the starter motor work properly?
Ensure that the engine speed reaches PR055
Engine speed > ~ 200 rpm with the starter in
operation, Consult Technical Note 6014A, Checking the
charging circuit, 16A, Starter fault finding,
Starter.
Using the diagnostic tool, check the conformity of the immobiliser: ET003 Immobiliser must be INACTIVE.
ET003 not
in order, or
immobiliser warning light
permanently onET003 correct
(immobiliser code
warning light off)
Consult the fault finding procedure for the
immobiliser.Continue the fault finding procedure with Part A
of this fault finding chart.
PART
B
NO
YES
NO
YES
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-386
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
V9 MR-372-J84-13B450$190.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP4 Poor performance
NOTESBefore analysing this customer complaint, check that there are no faults, and the
conformity (or otherwise) of the parameters and statuses, using the diagnostic
tool.
If the customer complaint is not eliminated, perform the following checks.
IMPORTANT
In the case of engine overheating to above 118°C, the computer deliberately limits the fuel flow (overheating
warning light lights up from 115°C).
Please observe the cleanliness guidelines and safety advice.
Is the poor performance accompanied by smoke?
Check the conformity of the fuel used by running test 11 Diesel fuel conformity check.
If the diesel fuel is not correct:
– Replace the diesel fuel.
– Change the diesel filter.
– Bleed the low and high pressure diesel circuit.
Test the high pressure fuel circuit:
Run the scenario SC035 High pressure fuel circuit fault finding (see Interpretation of commands).
Check that the injectors are correctly fitted (presence and conformity of the sealing washer).
Checking procedure:
– Take a straightedge approximately 40 cm long and place it on the 4 injectors. The straightedge should rest on
the 4 injectors.
– If 1 injector protrudes, remove the injector and check that the washer is correct.
– If one injector does not touch the straightedge (clearance of more than 1 mm), remove the injector and check
that the washer is present.
– Clean the injector wells and the injector, refit the injector with the correct sealing washer.
– The tightness seal and the condition of the inlet circuit: run test 4: Turbocharged air inlet circuit check.
– The condition of the air flowmeter, run test 5 Air flowmeter.
– The turbocharger, run the following tests:
– test 2: Air path at the turbocharger,
– test 6: Turbocharger control solenoid valve check,
– test 7: Turbocharger.
NOA
YES
EDC16C36_V44_ALP04/EDC16C36_V4C_ALP04/EDC16C36_V48_ALP04/EDC16C36_V50_ALP04/EDC16C36_V54_ALP04/
EDC16C36_V58_ALP04EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-399
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
V9 MR-372-J84-13B450$190.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP11 Particle filter warning light comes on too often
NOTESThis ALP is specific to Vdiag48.
Before dealing with this customer complaint, check that there are no faults
except DF312 Speed request, and check the conformity (or otherwise) of the
"parameters" and "statuses" using the diagnostic tool. Deal with the other faults
first.
If the customer complaint is not eliminated, perform the following checks.
Have the last 10 regeneration attempts failed?
Is the mileage of PR412 Mileage of last successful
regeneration less than all the parameters of group 2? (PR794
to PR803 Stored regeneration failure no. 1 to no. 10)Is at least one status in group 1
= STATUS4?
Symptom not
confirmed
Are all the regeneration failures linked to engine cut-off?
See parameter ET706 Stored engine status no.1 to ET715
Stored engine status no.10 (E.g. ET706 STOPPED)
Check the exhaust pipe for leaks or blockage. Repair if
necessary.
Perform After-Sales regeneration if it was not performed
previously (see Interpretation of commands, SC017 Particle
filter regeneration)
NO
YES
NOYES
A
YESOutput
1
NO
Output
2
EDC16C36_V48_ALP11/EDC16C36_V58_ALP11EDC16 C36
Program No.: 91
Vdiag No.: 48, 58
13B-403
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
V9 MR-372-J84-13B450$190.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
Analysis of output for ALP11 Particle filter warning light comes on too frequently
ALP11
CONTINUED 4
ALP
output no.ALP 11 output
conditionsCause - type of drivingRegeneration
frequencyWhat to tell the
customer?
Output 1The last 10
regeneration attempts
have failed due to the
engine cutting out.Regeneration failures
caused by engine cut-
off.No regeneration
frequency
analysis.Explain to the customer
the need to wait until the
end of regeneration
(warning light goes out)
before switching off the
engine.
Output 2The last 10
regeneration attempts
have failed, but not
because of the engine
cutting out.Unsuitable driving
conditionsNo regeneration
frequency
analysis.Explain to the customer
the driving criteria for
when the warning light
comes on.
Output 3After successful
regenerations stored in
the memory, the
warning light did not
come on. An interval
cannot be calculated.Since the last successful
stored regenerations, the
driving conditions have
not allowed the warning
light to come on.Should be normal Vehicle correct
Output 4The interval between a
successful
regeneration and the
particle filter warning
light coming on is
correct (above the
lowest possible
values). The system
does not have any
irregular components.Unfavourable driving
(urban zone, underspeed,
etc.)Normal Vehicle correct
EDC16 C36
Program No.: 91
Vdiag No.: 48, 58