2011 RENAULT SCENIC battery

13B-302
MR-372-J84-13B200$756.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of commands
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
AC001
PRE-POSTHEATING UNIT
NOTESThis command is only run if fault DF025 Preheating unit diagnostic line or DF017
Preheating unit control circuit is present or stored and if no other faults are present.
Refer to the Wiring Diagrams Technical Note for the vehicle to locate the fuses and
relays concerned.
Switch on the ignition and connect the diagnostic tool.
with the pre-postheating unit connected:
– connect the negative terminal of the voltmeter to connection 3FF of component 257,
– connect the positive terminal of the voltmeter to the + 12 V battery,
– run command AC001.
If the voltmeter does not indicate the battery voltage while the command is running (ten 1-second ON/OFF
cycles):
1- Check the condition of the preheating unit supply fuse F01 (70A).
Replace it if necessary.
2- Check the continuity and the absence of interference resistance of the following connections:
– connection code 3FF,
– connection code 3FY.
Between components 120 and 257.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Repair if necessary.
3- Check the connections on the preheating unit, heater plugs and injection computer.
Repair if necessary.
4- Measure the resistance of the heater plugs. If this resistance is greater than 2 Ω, replace the faulty plug(s).
5- Check the continuity and the absence of interference resistance between the following connections:
– connection code 37AB,
– connection code 37Z,
– connection code 37AC,
– connection code 37AA.
Between components 257, 680, 681, 682 and 683.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
6- Check for + 12 V on connectionBP35 of component257.
if the fault is still present, replace the preheating unit
EDC16_V50_AC001/EDC16_V58_AC001/EDC16_V5C_AC001/EDC16_V18_AC001/EDC16_V1C_AC001/EDC16_V20_AC001

13B-304
MR-372-J84-13B200$756.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of commands
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
*ocr = opening cyclic ratioAC004
CONTINUED
Turbocharger control circuit check (continued)
4) Check the operation of the turbocharger:
a) Attach a vacuum pump to the hose connected to the turbocharger control diaphragm,
Apply a vacuum of 700 mbar < X < 900 mbar:
If there is a leak, replace the turbocharger (diaphragm included).
b) Check the movement and adjustment of the control rod (see MR 364 (Mégane II), 370 (Scénic II) or 395
(Laguna II), Mechanical, 12B, Turbocharging).
If the control rod is sticking, replace the turbocharger.
c) Engine cold and stopped:
Remove the turbocharger inlet duct and check that the compressor turns freely on the axis.
d) If the fault persists:
Check that the exhaust manifold is not leaking.
Check that the exhaust is not blocked.
Carry out the necessary repairs.
5) Check the computer output stage with the solenoid valve connected:
This operation can only be carried out if the checks indicated in step no. 2 are not conclusive.
→Or using a voltmeter:
Connect the voltmeter earth lead to connection 3FB (Laguna II and Mégane II) or 3FB1 (Scénic II) of
component 1475 and the positive lead to connection 3MG.
Clear any solenoid valve fault then run command AC004:
The voltmeter should display ten cycles of two successive voltages ~ = battery voltage X current OCR*.
Either: ~ 2.5 V (OCR* of 20%) then ~ 8.7 V (OCR* of 70%).
→Or using an oscilloscope (range 5 V/division and time base 1 ms/division):
Connect the oscilloscope earth lead to the battery earth and the positive test pin to connection 3FB (Laguna II
and Mégane II) or 3FB1 (Scénic II) of component 1475.
Clear any solenoid valve faults, then run command AC004:
the oscilloscope should display a square wave signal of 12.5 V in amplitude at a frequency of 140 Hz
(with an OCR* passing from ~ 20 to ~ 70%).
if the measurement is correct, replace the solenoid valve.
if the measurement does not show any control or continuous voltage, contact the techline.

13B-305
MR-372-J84-13B200$756.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of commands
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
*ocr: opening cyclic ratioAC011
RAIL PRESSURE REGULATOR
NOTESthis command is used to check:
– the operation of the pressure regulator,
– and the high pressure injection circuit.
Step 1:
Measure the resistance of the pressure regulator between connections 3HI and 3FB.
- Replace the regulator if its resistance is not 2.5 Ω < X < 3.5 Ω at 20°C.
Check the continuity and absence of interference resistance of the following connections:
– connection code 3HI,
– connection code 3FB.
Between components 120 and 11 0 5.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If, when running command AC011, you can hear a slight whistling noise and a clicking noise from the pressure
regulator, go to step 2. Otherwise, check that the computer output stage is functioning correctly:
→Using a voltmeter:
With the solenoid valve connected, connect the voltmeter earth lead to connection 3HI of component 1105 and
the positive lead to connection 3FB (Laguna II and Mégane II) or 3FB1 (Scénic II). Clear any fuel pressure
solenoid valve faults, then run command AC011:
The voltmeter should display two successive voltages: ~2.5V for an OCR* of 20%, then ~8.75V for an OCR* of
70% (ten cycles)
→Or using an oscilloscope (range 5 V/division and time base 1 ms/division):
With the solenoid valve connected, connect the oscilloscope earth to the battery earth and the positive test pin to
connection 3HI of component 11 05; clear any fuel pressure solenoid valve faults then run command AC011:
The oscilloscope should display a square wave signal of 12.5 V in amplitude at a frequency of 185 Hz (with an
OCR* passing successively from 20 to 70%).
if the measurement is correct, replace the regulator.
If the measurement is not correct, contact the Techline.
EDC16_V50_AC011/EDC16_V58_AC011/EDC16_V5C_AC011/EDC16_V18_AC011/EDC16_V1C_AC011/EDC16_V20_AC011

13B-309
MR-372-J84-13B200$756.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of commands
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
AC031
CONTINUED
vdiag 18, 1C, 20:
If the additional heater no. 3 relay does not operate when running command AC031:
Check the additional heater no. 3 relay mounting.
check the engine management computer connections.
Repair if necessary.
if the fault is still present, check as follows that this relay is controlled by the engine management computer:
Disconnect the additional heater no. 3 relay, fit a 50 to 100Ω resistor on the mounting in place of the coil and
connect a voltmeter as follows:
Positive terminal to +12 V battery.
Negative terminal to connection 3JAB of the additional heater no. 3 relay mounting.
Clear the fault and actuate the relay using command AC031.
If the voltmeter shows the battery voltage (two, 2-second ON-OFF cycles), replace the additional heater no. 3
relay.
If the voltmeter does not show the battery voltage (two 2 second ON-OFF cycles), contact the Techline.
If the additional heater no. 3 relay is supplied by command AC031, but there is still a fault with the passenger
compartment heating and demisting, check using a wiring diagram:
– the conformity of the thermoplunger maxi-fuse,
– the presence of + 12 V battery on connection BP9 of the additional heater no. 3 relay mounting,
– the conformity of the additional heater relay 3;
– the continuity between connection 3JAC of the additional heater no. 3 relay mounting and the supply terminal
for thermoplunger no. 3.
– the conformity of the thermoplunger resistance: 0.4 Ω < X < 0.5 Ω at 20 °C,
– the presence of earth at the water chamber (thermoplunger mounting).
Also check the level of the cooling circuit and that there are no leaks.
Carry out the necessary repairs.

13B-310
MR-372-J84-13B200$756.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of commands
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
AC038
LOW-SPEED FAN ASSEMBLY RELAY
NOTESThere must be no present or stored faults.
Perform this fault finding procedure if a malfunction appears on the command menu
or after an engine cooling system or air conditioning fault.
Refer to the Wiring diagrams Technical Note for the vehicle to locate the fuses and
relays concerned.
If the low-speed fan assembly relay does not operate when command AC038 is run:
Check the low speed fan relay mounting and the connections of the engine management computer.
Repair if necessary.
If the fault is still present, check that the relay is actuated by the engine management computer as follows:
Disconnect the low-speed fan assembly relay, fit a 50 Ω < X < 100 Ω resistor on the relay mounting in place of
the coil, and connect a voltmeter as follows:
Positive terminal to the +12 V battery.
Negative terminal to connection 3JN of the low-speed fan assembly relay mounting.
Clear the fault and run command AC038
If the voltmeter indicates the battery voltage (three 2-second ON-OFF cycles), replace the relay.
If the voltmeter does not show the battery voltage (three 2 second ON-OFF cycles), contact the techline.
If the low speed fan assembly relay operates when command AC038, is run, but there is still a fan assembly
activation fault, use the wiring diagram to check the following:
– the conformity of the fan assembly maxi-fuse.
– the conformity of the low-speed fan unit relay,
– the continuity of connection 49L between components 597 and 321.
– the continuity of connection 49B between components 321 and 262.
– the conformity of the fan assembly and the continuity of connection MAS of component 262.
Carry out the necessary repairs.
EDC16_V18_AC038/EDC16_V1C_AC038/EDC16_V20_AC038

13B-311
MR-372-J84-13B200$756.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of commands
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
AC039
HIGH-SPEED FAN ASSEMBLY RELAY
NOTESThere must be no present or stored faults.
Perform this fault finding procedure if a malfunction appears on the command menu
or after an engine cooling system or air conditioning fault.
Refer to the Wiring Diagrams Technical Note for the vehicle to locate the fuses and
relays concerned.
If the high-speed fan assembly relay does not operate when command AC039 is run:
Check the high-speed fan assembly relay mounting and the connections of the engine management computer.
Repair if necessary.
If the fault is still present, check that the relay is actuated by the engine management computer as follows:
Disconnect the high-speed fan assembly relay, fit a 50 Ω < X < 100 Ω resistor on its mounting in place of the
coil, and connect a voltmeter as follows:
Positive terminal to the +12 V battery.
Negative terminal to connection 3JP of the high-speed fan assembly relay mounting.
Clear the fault and run command AC039.
If the voltmeter indicates the battery voltage (three 2-second ON-OFF cycles), replace the relay.
If the voltmeter does not show the battery voltage (three 2 second ON-OFF cycles), contact the techline.
If the high-speed fan assembly relay is supplied by command AC039, but there remains a fault with the
triggering the fan assembly. Check using the wiring diagram:
– the conformity of the fan assembly maxi-fuse.
– + battery feed on connection BP71 of the high-speed fan assembly relay mounting,
– the conformity of the high-speed fan assembly relay,
– the continuity of connection 49B between components 597 and 262,
– the conformity of the fan assembly,
– the continuity of connection MAS of component 262.
Carry out the necessary repairs.
EDC16_V18_AC039/EDC16_V1C_AC039/EDC16_V20_AC039

13B-313
MR-372-J84-13B200$756.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of commands
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
AC063
CONTINUED
vdiag 18, 1C, 20:
If the additional heater no. 1 relay does not operate when running command AC063:
Check the additional heater no. 1 relay mounting.
Check the engine management computer connectors.
Repair if necessary.
if the fault is still present, check as follows that this relay is controlled by the engine management computer:
Disconnect the additional heater no. 1 relay, fit a 50 Ω < X < 100 Ω resistor on the relay mounting in place of the
coil, and connect a voltmeter as follows:
Positive terminal to the +12 V battery.
Negative terminal to connection 3JA of component 597.
Clear the fault and actuate the relay using command AC063.
If the voltmeter shows the battery voltage (two, 2-second ON-OFF cycles), replace the additional heater no. 1
relay.
If the voltmeter does not show the battery voltage (two, 2-second ON-OFF cycles), contact the Techline.
If the additional heater no. 1 relay is supplied by command AC063, but there is still a fault with the passenger
compartment heating and demisting, check the following using a wiring diagram:
– the conformity of the thermoplunger maxi-fuse,
–+12V battery on connection 3FB of component 597.
– the conformity of the additional heater no. 1 relay,
– the continuity between connection 3JB of component 597 and connection 3JB of component 898,
– the conformity of the thermoplunger resistance: 0.40 Ω < X < 0.50 Ω at 20°C,
– the presence of earth at the water chamber (thermoplunger mounting).
Also check the level of the cooling circuit and that there are no leaks.
Carry out the necessary repairs.

13B-315
MR-372-J84-13B200$756.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of commands
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
AC064
CONTINUED
vdiag 18, 1c, 20:
If the additional heater no. 2 relay does not operate when running command AC064,
check the additional heater no. 2 relay mounting,
check the connectors on the engine management computer.
Repair if necessary.
if the fault is still present, check as follows that this relay is controlled by the engine management computer:
Disconnect the additional heater no. 2 relay, fit a 50 Ω < X < 100 Ω resistor on the mounting in place of the coil,
and connect a voltmeter as follows:
Positive terminal to the +12 V battery.
Negative terminal to connection 3JAA of component 597.
Clear the fault and actuate the relay via command AC064.
If the voltmeter shows the battery voltage (two 2-second ON-OFF cycles), replace the additional heater 1 relay.
If the voltmeter does not show the battery voltage (two 2 second ON-OFF cycles), contact the Techline.
If the additional heater no. 2 relay is supplied by command AC064, but there is still a fault with the passenger
compartment heating and demisting, use the wiring diagram to check the following:
– the conformity of the thermoplunger maxi-fuse,
–+12V battery on connection BP91 of component 597,
– the conformity of the additional heater no. 2 relay,
– the continuity of connection 3JAD between components 597 and 1072.
– the conformity of the thermoplunger resistance: 0.40 Ω < X < 0.50 Ω at 20°C,
– the presence of earth at the water chamber (thermoplunger mounting).
Also check the level of the cooling circuit and that there are no leaks.
Carry out the necessary repairs.