Page 201 of 431

13B-201
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition until the end of the power-latch phase, and carry out a road test
followed by a check using the diagnostic tool.
V9 MR-372-J84-13B450$104.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
*ADAC: Trip Computer
DF1020
PRESENT
OR
STOREDENGINE OIL DILUTION
1. DEF: Above maximum threshold
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after:
– the engine is started.
– a road test.
Special notes:
If the fault is present:
– particle filter regeneration is inhibited.
Use bornier Elé. 1681 for any operations on the injection computer connectors.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
Note:
This fault is activated in case of considerable oil dilution due to a significant number of particle filter regenerations.
Carry out the following:
– An oil change (see MR 364 (Mégane II) or MR 370 (Scénic II), Mechanical, 10A Engine and peripherals,
Engine oil: Draining – Filling),
– reset the oil wear meter,
– clear the faults.
Reset the oil wear meter after the oil change:
It will be necessary to reinitialise the display of the trip computer.
With the ignition on:
– hold down the TC* button for 5 s.
Re-initialisation has worked when the on-board computer no longer displays the key.
If this is not the case, restart the procedure.
Specific case:
If an oil change is performed before the oil service interval warning is exceeded, reinitialise the display.
EDC16C36_V50_DF1020/EDC16C36_V58_DF1020EDC16 C36
Program No.: 91
Vdiag No.: 50, 58
Page 237 of 431

13B-237V9 MR-372-J84-13B450$131.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET341IMMOBILISER CODE PROGRAMMED
STATUS DEFINITIONYES: This status indicates that the immobiliser code has been programmed.
NO: This status indicates that the immobiliser code has not been programmed.
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature
> 80°C
YESStatus ET341 is YES if dialogue is possible between the UCH computer and the
injection computer and if the key code is recognised.
Engine starting authorisation is only given if the code is correctly recognised by the
UCH computer and status ET003: Engine immobiliser is INACTIVE.
In the event of a fault (see 87B, passenger compartment connection unit,
conformity check).
NOStatus ET341 is NO if dialogue is not possible between the UCH computer and the
injection computer (status ET003 Engine immobiliser remains ACTIVE).
This fault may be caused by incorrect key programming or a lack of key programming.
In this case, refer to the UCH fault-finding note (see 87B, Passenger compartment
connection unit) and follow the key programming procedure.
If the key programming is not the cause, run a multiplex network test (see 88B,
Multiplexing) and check that dialogue between the UCH and the injection computer
is possible.
If dialogue is not established, contact Techline.
EDC16C36_V44_ET341/EDC16C36_V4C_ET341/EDC16C36_V48_ET341/EDC16C36_V50_ET341/EDC16C36_V54_ET341/
EDC16C36_V58_ET341
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58, 58
Page 423 of 431

13B-423V9 MR-372-J84-13B450$200.mif
DIESEL INJECTION
Fault finding – Tests13B
2. Check the injector return flow balance:
TEST10
CONTINUED 7
Does the engine start?–Fit Mot. 1760 as shown in the tool fitting procedure.
– Start the vehicle or do a starting sequence of 15 s (with ignition
key).
– Measure the length travelled by the diesel fuel in the pipes of the
Mot. 1760.
– Replace the injector if the length travelled by the fuel is more than
10 cm compared with the average of the other three injectors.
– The injector return pipes must be fitted to the injectors.
– Start the engine.
– Display the sub-function Fuel circuit in the CLIP diagnostic tool.
– Raise the temperature of the engine.
– Read the diesel fuel temperature with the PR063 Fuel temperature until the diesel fuel temperature is greater
than 50°C
– Switch off the engine.
–Fit Mot. 1760 as shown in the installation procedure (see step 1).
– Check the value of the PR038 Rail pressure.
– Ask another Cotech to monitor the rise in fuel in the cans during engine turnover, as one of the cans will fill up
quickly if one of the injectors is leaking.
– Start the engine.
– Accelerate the engine until the pressure in the rail is 550 bar:
– if the engine speed is less than 3,000 rpm, maintain this pressure.
– if the engine speed is more than 3,000 rpm, reduce the engine speed until the rail pressure is 500 bar
and maintain this pressure.
– Maintain these conditions for 1min.
– Release the accelerator pedal and maintain the idle speed for 10 seconds.
– Switch off the engine.
– Measure the quantity of fuel contained in each measuring cylinder.
– Replace the injector if the quantity of fuel is more than 50 ml.
– Remove Mot. 1760 as shown in the tool removal procedure (see step 3).
NO
YES
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58