2011 RENAULT SCENIC air condition

13B-59
DIESEL INJECTION
Fault finding - Interpretation of faults13B
V10 MR-372-J84-13B150$329.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
DF046
PRESENT
OR
STOREDBATTERY VOLTAGE
1.DEF : excess voltage
2.DEF : undervoltage
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present following a road test or after attempting to start the engine.
Special notes:
Computer operating voltage: 9 V < operating voltage < 16 V.
If the battery voltage is too low this may cause the level 1 fault warning light to
come on.
It is then not possible to start the engine.
Use bornier Ele. 1681 for all operations on the injection computer connectors.
1.DEF
NOTESNone.
Check the charge circuits: – battery status,
– alternator status (complete fault finding procedure).
Carry out the necessary repairs.
2.DEF
NOTES(Use the Wiring Diagrams Technical Note for the vehicle).
With the ignition off, measure the voltage across the battery terminals.
If the voltage is less than 11.5 V, test the battery.
If the battery is faulty, replace the battery then test the charge circuit.
With the ignition on and the with the starter motor turning, measure the voltage between the battery terminals
If the voltage drops below 9.6 V, check the tightness and condition of the battery terminals.
Repair if necessary.
If the terminals are in good condition, test the battery.
If they are faulty, replace the battery.
If the starter is cranking the engine correctly, but the fault is still present,
–Check the continuity and absence of interference resistance of the following connections:
+ 12 V timed by UPC Track M2 connector B of the engine management computer
+ 12 V timed by UPC Track G1 connector A of the engine management computer
Battery earth Tracks G4, H4, H1 of connectorA of the injection computer
Repair if necessary.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by a check with the diagnostic tool.
EDC16_V44_DF046/EDC16_V48_DF046/EDC16_V4C_DF046

13B-60
DIESEL INJECTION
Fault finding - Interpretation of faults13B
V10 MR-372-J84-13B150$329.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
DF047
PRESENT
OR
STOREDCOMPUTER SUPPLY VOLTAGE
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after several starting attempts, or with the engine running.
Special notes:
Computer operating voltage: 9 V < operating voltage < 16 V.
If the battery voltage is too low this may cause the level 1 fault warning light to
come on.
It is then not possible to start the engine.
Use bornier Elé. 1681 for all operations on the injection computer connectors.
Check for continuity and the absence of interference resistance on the following connection:
Injection computer connector A, black 32-track track D1 Track 1 black connector of the UPC
Repair if necessary.
Check the condition of the FD5 fuse on the UPC (poor contact, or oxidation on the relay mounting clips).
Repair if necessary.
If the fault does not recur, start the engine and wait 1 min.
Carry out a road test and check the system faults.
If there are no faults, fault finding is complete.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by a check with the diagnostic tool.
EDC16_V44_DF047/EDC16_V48_DF047/EDC16_V4C_DF047

13B-61
DIESEL INJECTION
Fault finding - Interpretation of faults13B
V10 MR-372-J84-13B150$329.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
DF049
PRESENT
OR
STOREDREFRIGERANT SENSOR CIRCUIT
CC.1 : short circuit to + 12 V
CO.0 : open circuit or short circuit to earth
NOTESPriorities when dealing with a number of faults:
Deal with fault DF012 Sensor feed voltage no. 2 first if it is present or stored.
Conditions for applying the fault finding procedure to a stored fault:
The fault is declared present following a road test, or if the air conditioning is
switched on.
Special notes:
If the fault is present, air conditioning is not authorised.
Use bornier Elé. 1681 for all operations on the injection computer connectors.
CC.1
NOTESNone.
Check the refrigerant pressure sensor connectors.
Check the injection computer connections.
Repair if necessary.
Connect an air conditioning filling station (equipped with a high pressure gauge) to the vehicle.
Display parameter PR037 Refrigerant pressure and compare the value displayed by the filling station.
If the values match, carry out a fault finding procedure as described in the fault finding note for that vehicle.
If the values do not match, check the continuity and insulation against + 12 V of the following connections:
Injection computer, brown 48-track connector B, track F1 Track C refrigerant sensor
connector
Injection computer, brown 48-track connector B, track F3 Track B refrigerant sensor
connector
Injection computer grey 32-track connector C, track C3 Track A refrigerant sensor
connector
Repair if necessary.
If the fault is still present, replace the refrigerant pressure sensor.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by a check with the diagnostic tool.
EDC16_V44_DF049/EDC16_V48_DF049/EDC16_V4C_DF049

13B-62
DIESEL INJECTION
Fault finding - Interpretation of faults13B
V10 MR-372-J84-13B150$329.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
DF049
CONTINUED
CO.0
NOTESNone.
Check the refrigerant pressure sensor connectors.
Check the injection computer connections.
Repair if necessary.
Connect an air conditioning filling station (equipped with a high pressure gauge) to the vehicle.
Display parameter PR037 Refrigerant pressure and compare the value displayed by the filling station.
If the values match, carry out a fault finding procedure as described in the fault finding note for that vehicle.
If the values do not match, check the continuity and insulation against earth of the following connections:
Injection computer, brown 48-track connector B, track F1 Track C refrigerant sensor
connector
Injection computer, brown 48-track connector B, track F3 Track B refrigerant sensor
connector
Injection computer grey 48-track connector C, track C3 Track A refrigerant sensor
connector
Repair if necessary.
If the fault is still present, replace the refrigerant pressure sensor.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by a check with the diagnostic tool.

13B-63
DIESEL INJECTION
Fault finding - Interpretation of faults13B
V10 MR-372-J84-13B150$329.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
DF050
PRESENT
OR
STOREDBRAKE SWITCH CIRCUIT
1.DEF : signal incoherence
2.DEF : no signal
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after the brake pedal is depressed, or during a road test.
Special notes:
If the fault is present, cruise control is deactivated.
Use bornier Elé. 1681 for all operations on the injection computer connectors.
WARNING
This fault may appear if the wiring harness has been damaged.
Follow the procedure described in the Wiring Check in the Introduction.
This check enables the condition and the conformity of the engine wiring harness to be checked.
1.DEF
NOTESNone.
Check the brake pedal switch connections.
Check the condition and adjustment of the brake pedal switch.
Repair if necessary.
Check the continuity and the absence of interference resistance on the following connection:
Injection computer black 32-track connector A, track E4 Track 3 of the brake switch
Repair if necessary.
Check the conformity of the switch by consulting the interpretation of statuses ET704 Brake switch no. 1 signal
and ET705 Brake switch no. 2 signal.
If the fault is still present, carry out fault finding on the ABS computer.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by a check with the diagnostic tool.
EDC16_V44_DF050/EDC16_V48_DF050/EDC16_V4C_DF050

13B-64
DIESEL INJECTION
Fault finding - Interpretation of faults13B
V10 MR-372-J84-13B150$329.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
DF050
CONTINUED
2.DEF
NOTESNone.
Check the brake pedal switch connections.
Check the condition and adjustment of the brake pedal switch.
Repair if necessary.
Check the conformity of the brake switch:
Brake pedal released: continuity between tracks 3 and 4
infinite resistance across tracks 1 and 2
Brake pedal depressed: infinite resistance between tracks 3 and 4
continuity between tracks 1 and 2.
Replace the switch if necessary.
Check the condition of the 1H 15A fuse on the passenger compartment fuse and relay board.
Replace the fuse if necessary.
Check the following switch supplies:
+ 12 V after ignition Track 2 of the brake pedal switch connector
+ 12 V battery Track 4 of the brake pedal switch connector (via the UCH)
Replace the switch if necessary.
Check the continuity and insulation of the following connection:
Injection computer black 32-track connector A, track E4 Track 3 brake pedal switch
connector
Repair if necessary.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by a check with the diagnostic tool.

13B-65
DIESEL INJECTION
Fault finding - Interpretation of faults13B
V10 MR-372-J84-13B150$329.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
DF051
PRESENT
OR
STOREDCRUISE CONTROL/SPEED LIMITER FUNCTION
1.DEF : signal incoherence
2.DEF : inconsistent vehicle speed
3.DEF : controls at the steering wheel
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after the engine is started or following a road test.
Special notes:
The cruise control/speed limiter function is inhibited.
Use bornier Elé. 1681 for all operations on the injection computer connectors.
WARNING
This fault may appear if the wiring harness has been damaged.
Follow the procedure described in the Wiring Check in the Introduction.
This check enables the condition and the conformity of the engine wiring harness to be checked.
If fault DF051 is present, refer to the Cruise control/Speed limiter section of the conformity check and refer to
interpretation of statuses ET042 Cruise control/Speed limiter, ET415 Cruise control/Speed limiter
deactivation and ET703 Cruise control/Speed limiter buttons.
Check that by pressing the buttons the statuses change and that, with the ignition switched on, all the values
are correct.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by a check with the diagnostic tool.
EDC16_V44_DF051/EDC16_V48_DF051/EDC16_V4C_DF051

13B-66
DIESEL INJECTION
Fault finding - Interpretation of faults13B
V10 MR-372-J84-13B150$329.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
DF053
PRESENT
OR
STORED
RAIL PRESSURE REGULATION FUNCTION
CC.1 : Short circuit to + 12 V
CC.0 : Short circuit to earth
CO : Open circuit
1.DEF : Internal electrical fault
2.DEF : Measured pressure too low
3.DEF : Measured pressure too high
4.DEF : Insufficient pressure
5.DEF : Pressure < minimum
6.DEF : Pressure > maximum
7.DEF : Extensive pump command
8.DEF : significant pump control at idle speed
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present following a road test or after attempting to start the engine.
Special notes:
If the fault is present:
– It is not possible to start the engine.
– the level 2 warning light is lit.
Use bornier Ele. 1681 for all operations on the injection computer connectors.
CC.1
NOTESNone.
Check the rail pressure regulator connectors.
Check the injection computer connections.
Check the low pressure circuit.
Check the conformity of the fuel used, apply test 5 Diesel fuel conformity check.
Check the injector return flow, run test 1 Injector test.
Check the operation of the overpressure valve if fitted to the vehicle, run test 6 Incorrect operation of the
overpressure valve.
Repair if necessary.
Measure the resistance of the rail pressure regulator between tracks 1 and 2.
If the resistance is not 3Ω ±1 at 20°C, replace the injection pump.
Check the continuity and insulation from + 12 V on the following connection:
Injection computer brown 48-track connector B, track M4 Track 2 of the fuel flow actuator
If the fault is still present, replace the injection pump.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V08_DF053/EDC16_V10_DF053/EDC16_V14_DF053