13B-7V4 MR-372-J84-13B000$010.mif
DIESEL INJECTION
Fault finding – Introduction13B
DDCR INJECTION
Vdiag No.: 44, 48
Advice to be followed before any operation
Protect the accessories and timing belts, the electrical accessories (starter, alternator, electric power assisted
steering pump) and the mating face to prevent diesel fuel spilling onto the clutch friction plate).
Check that you have plugs for the unions to be opened (set of plugs available from the Parts Department). The plugs
are single-use only. After use, they must be discarded (once used they are soiled and cleaning is not sufficient to
make them reusable). Unused plugs must be discarded.
Ensure that you have hermetically resealable plastic bags for storing removed parts. Parts stored in this way will be
less susceptible to the risk of contamination. These are single-use bags; after use they must be discarded.
Use lint-free cleaning cloths (part no. 77 11 211 707). Using normal cloth or paper is prohibited. They are not lint-free
and could contaminate the fuel circuit. Each cloth should only be used once.
Use fresh cleaning agent for each operation (used cleaning agent is contaminated). Pour it into an uncontaminated
container.
For each operation, use a clean brush in good condition (the brush must not shed its bristles).
Use a brush and cleaning agent to clean the unions to be opened.
Blow compressed air over the cleaned parts (the tools and workbench, as well as the parts, unions, and injection
system sections). Check that no bristles remain.
Wash your hands before and during the operation if necessary.
When wearing leather protective gloves cover them with latex gloves to prevent contamination.
Instructions to be followed during the operation
As soon as the circuit is open, all openings must be plugged to prevent impurities from entering the system.
The plugs to be used are available from the Parts Department. They must not be reused under any circumstances.
Close the hermetically sealed bag, even if it has to be reopened shortly afterwards. Ambient air carries impurities.
All components removed from the injection system must be stored in a hermetically sealed plastic bag once they
have been plugged.
Using a brush, cleaning agent, air gun, sponge or normal cloth is strictly prohibited once the circuit has been
opened. These items are likely to allow impurities to enter the system.
A new component replacing an old one must not be removed from its packaging until it is to be fitted to the vehicle.
13B-101V4 MR-372-J84-13B000$070.mif
DIESEL INJECTION
Fault finding – Conformity check13B
DDCR INJECTION
Vdiag No.: 44, 48
CRUISE CONTROL / SPEED LIMITER SUB-FUNCTION:
NOTESOnly check conformity after a full check with the diagnostic tool.
The values shown in this conformity check are given as examples.
Application conditions: Engine off, ignition on.
FunctionParameter or
Status
Check or
actionDisplay and notes Fault finding
Cruise
control/speed
limiterET042:
Cruise
control/speed
limiterNOT DETECTED: Vehicle not equipped with the
cruise control - speed limiter function buttons, OR
after reprogramming the injection computer, the
switch is in the rest position.
INACTIVE: when no buttons are pressed
SPEED LIMITER: Main switch in speed limiter
position.
CRUISE CONTROL: Main switch in cruise control
position.Consult the
interpretation of status
ET042 Cruise
control - speed
limiter.
ET703: Cruise
control/speed
limiter buttonsINACTIVE: No cruise control - speed limiter buttons
are pressed. These buttons are located on the
steering wheel.
PLUS: When the cruise control - speed limiter
+button is pressed. This button is on the steering
wheel, on the left-hand side.
- MINUS: When the cruise control - speed limiter
- button is pressed. This button is on the steering
wheel, on the left-hand side.
- SUSPEND: When the cruise control - speed limiter
0 button is pressed. This button is located on
the steering wheel, to the right.
- RESUME: When the cruise control - speed limiter
R button is pressed. This button is located on
the steering wheel, to the right.Consult the
interpretation of status
ET703 Cruise
control - speed
limiter button.
13B-121V4 MR-372-J84-13B000$070.mif
DIESEL INJECTION
Fault finding – Conformity check13B
DDCR INJECTION
Vdiag No.: 44, 48
CRUISE CONTROL / SPEED LIMITER SUB-FUNCTION:
NOTESOnly check conformity after a full check with the diagnostic tool.
The values shown in this conformity check are given as examples.
Application conditions: Engine off, ignition on.
FunctionParameter or
Status Check or
actionDisplay and notes Fault finding
Cruise control/
speed limiterET042:
Cruise control/
speed limiterNOT DETECTED: Vehicle not equipped
with the cruise control - speed limiter
function buttons, OR after
reprogramming the injection computer,
the switch is in the rest position.
INACTIVE: when no buttons are
pressed
SPEED LIMITER: Main switch in speed
limiter position.
CRUISE CONTROL: Main switch in
cruise control position.Consult the interpretation of
status ET042 Cruise
control - speed limiter.
ET703: Cruise
control/speed
limiter buttonsINACTIVE: No cruise control - speed
limiter buttons are pressed. These
buttons are located on the steering
wheel.
PLUS: When the cruise control - speed
limiter + button is pressed. This button is
on the steering wheel, on the left-hand
side.
- MINUS: When the cruise control -
speed limiter - button is pressed. This
button is on the steering wheel, on the
left-hand side.
- SUSPEND: When the cruise control -
speed limiter 0 button is pressed. This
button is located on the steering wheel,
to the right.
- RESUME: When the cruise control -
speed limiter R button is pressed. This
button is located on the steering wheel,
to the right.Consult the interpretation of
status ET703 Cruise
control - speed limiter
button.
13B-133
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$090.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
DDCR INJECTION
Vdiag No.: 44, 48
ET415
CONTINUED 2
STATUS 4
Cancel button pressed
The cruise control/speed limiter function is deactivated each time the suspend button
is pressed.
Status ET415 becomes STATUS 4, when driving when:
– Either the cruise control is active, or
– the speed limiter is active,
– and the driver presses the 0 button.
This action deactivates the Cruise control/Speed limiter.
Reinitialise status ET415 on the injection computer by running command
RZ001 Fault memory.
If status ET415 becomes STATUS 4 without pressing the 0 button, consult the
interpretation of status ET703 Cruise control - speed limiter buttons and run fault
finding on the R/0 control button located on the right-hand side of the steering wheel.
13B-137
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$090.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
DDCR INJECTION
Vdiag No.: 44, 48
ET703 CRUISE CONTROL/SPEED LIMITER BUTTONS
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system programming
functions.
INACTIVEStatus ET703 becomes INACTIVE when none of the cruise control - speed limiter
buttons are pressed. These buttons are located on the steering wheel.
To remove the driver's airbag to perform the checks in complete safety.
(see 88C, Airbag and pretensioners)
If status ET703 does not display INACTIVE,
• check the condition of the cruise control/speed limiter +/- button and the condition
of its connector.
• check the condition of the cruise control/speed limiter R/0 button and the condition
of its connector.
Repair if necessary.
DDCR_V44_ET703/DDCR_V48_ET703
13B-138
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$090.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
DDCR INJECTION
Vdiag No.: 44, 48
ET703
CONTINUED 1
INCREASE
Status ET703 becomes PLUS when the cruise control / speed limiter + button is
pressed. This button is on the steering wheel, on the left-hand side.
To remove the driver's airbag to perform the checks in complete safety.
(see 88C, Airbag and pretensioners)
If status ET703 does not display INCREASE, check the condition of the cruise control
- speed limiter +/- button and the condition of its connector. Repair if necessary.
Measure the resistance on the following connections while pressing
the + button (on the button tracks):
• Connection code 86G of component 331.
• Connection code 86M of component 331.
If the resistance is not approximately 300 Ωcheck the continuity of the connection
when the button is not pressed. If there is continuity, replace the +/- control button.
(see MR 364 (Mégane II), MR 370 (Scénic II), Mechanical, 83D, Cruise control,
Steering wheel switch: Removal - Refitting).
DECREASEStatus ET703 becomes DECREASE when the - button of the cruise control/speed
limiter is pressed. This button is on the steering wheel, on the left-hand side.
To remove the driver's airbag to perform the checks in complete safety.
(see 88C, Airbag and pretensioners)
If status ET703 does not change to MINUS, check the condition of the cruise control
/ speed limiter +/- button, and the condition of its connector. Repair if necessary.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Measure the resistance of the following connections while pressing the "-"
button (on the button tracks):
• Connection code 86G of component 331.
• Connection code 86M of component 331.
If the resistance is not approximately 100 Ωcheck the continuity of the connection
when the button is not pressed. If there is continuity, replace the +/- control button.
(see MR 364 (Mégane II), MR 370 (Scénic II), Mechanical, 83D, Cruise control,
Steering wheel switch: Removal - Refitting).
13B-139
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$090.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
DDCR INJECTION
Vdiag No.: 44, 48
ET703
CONTINUED 2
SUSPEND
Status ET703 becomes SUSPEND when the cruise control / speed limiter 0 button is
pressed. This button is located on the steering wheel, to the right.
To remove the driver's airbag to perform the checks in complete safety.
(see 88C, Airbag and pretensioners)
If status ET703 does not become SUSPEND, check the condition of the cruise control
- speed limiter R/0 button and the condition of its connector.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Measure the resistance of the following connection whilst pressing the 0 button
(on the button tracks):
• Connection code 86G of component 331.
• Connection code 86M of component 331.
If the resistance is not approximately 0 Ω, replace the R/0 control button.
If there is continuity, replace the R/0 control button (see MR 364 (Mégane II), MR 370
(Scénic II), Mechanical, 83D, Cruise control, Steering wheel switch: Removal -
Refitting).
13B-140
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$090.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
DDCR INJECTION
Vdiag No.: 44, 48
ET703
CONTINUED 3
RESUME
Status ET703 becomes RESUME when the R button of the cruise control/speed
limiter is pressed. This button is located on the steering wheel, to the right.
To remove the driver's airbag to perform the checks in complete safety.
(see 88C, Airbag and pretensioners)
If status ET703 does not change to RESUME, check the condition of the cruise
control / speed limiter R/0 button, and the condition of its connector. Repair if
necessary.
If there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
Measure the resistance on the following connection while pressing
the R button (on the button tracks):
• Connection code 86G of component 331.
• Connection code 86M of component 331.
If the resistance is not approximately 900 Ω, check the continuity of the connection
when the button is not pressed. If there is continuity, replace the R/0 control button
(see MR 364 (Mégane II), MR 370 (Scénic II), Mechanical, 83D, Cruise control,
Steering wheel switch: Removal - Refitting).