2012 RENAULT SCENIC cooling

13B-11V12 MR-372-J84-13B300$030.mif
13B
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74
System outline
The high pressure injection system is designed to deliver a precise quantity of diesel fuel to the engine at a set
moment.
It is fitted with a BOSCH computer, type EDC16CP33.
The system comprises:
– a priming bulb,
– a diesel filter,
– a high pressure pump,
– a fuel pressure regulator (or actuator) on the high pressure pump (MPROP),
– a fuel pressure regulator (or actuator) mounted on the injector rail (DRV),
– an injector rail,
– a fuel pressure sensor,
– four piezoelectric injectors,
– a diesel temperature sensor,
– a coolant temperature sensor,
– an upstream air temperature sensor,
– a cylinder reference sensor,
– an engine speed sensor,
– a turbocharger pressure sensor,
– an exhaust gas recirculation valve,
– a recycled gas cooling solenoid valve,
– an accelerator pedal potentiometer,
– an atmospheric pressure sensor integrated into the injection computer,
– a flow sensor,
– a turbocharging limiter solenoid valve,
– a damper valve,
– a particle filter,
– a turbo upstream temperature sensor,
– a turbo upstream pressure sensor,
– a particle filter differential pressure sensor,
– a particle filter upstream temperature sensor,
– a particle filter downstream temperature sensor,
– an electric coolant pump (turbocharger),
– four thermoplungers.
The common rail direct high pressure injection system works sequentially (based on the petrol engine
multipoint injection).
This system uses piezoelectric injectors which enable a more precise injection since opening and closing times
are shorter compared to conventional solenoid injectors.
This injection system reduces operating noise, reduces the volume of pollutant gases and particles and produces
high engine torque at low engine speeds thanks to a pre-injection procedure.
The high pressure pump generates the high pressure and transmits it to the injector rail. The actuator located on
the pump controls the quantity of diesel supplied, according to the demand determined by the computer.
The rail supplies each injector through a steel pipe. The actuator located on the injector rail controls the pressure
of diesel fuel in the rail according to the demand determined by the computer.
DIESEL INJECTION
Fault finding – System operation

13B-262V12 MR-372-J84-13B300$090.mif
13B
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74
Tool status Diagnostic tool title
ET001+ After ignition computer feed
ET003Engine immobiliser
ET007Pre-postheating control
ET024Thermoplunger no. 1 request
ET025Thermoplunger no. 2 request
ET026Thermoplunger no. 3 request
ET034Clutch signal registered
ET038Engine
ET042Cruise control/speed limiter
ET076Starting
ET077Impact detected
ET079Air conditioning present
ET104Injector code use
ET120Pre-postheating signal
ET143Low-speed fan assembly relay control
ET144High-speed fan assembly relay control
ET205Thermoplunger no. 1 relay control (only on Laguna II ph2 without particle filter)
ET206Thermoplunger no. 2 relay control (only on Laguna II ph2 without particle filter)
ET207Thermoplunger no. 3 relay control (only on Laguna II ph2 without particle filter)
ET238Synchronisation
ET285Injection -> automatic gearbox connection
ET341Immobiliser code programmed
ET405Clutch pedal switch (only for manual gearboxes)
ET415Cruise control/Speed limiter deactivation
ET587Cooling of recirculated exhaust gas
ET589Electric coolant pump control (turbocharger)
ET615Automatic gearbox lever position
ET651EGR programming cut-off
DIESEL INJECTION
Fault finding – Status summary table

13B-263V12 MR-372-J84-13B300$090.mif
DIESEL INJECTION
Fault finding – Status summary table13B
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74
*rege.: regeneration
*cool.: coolingTool status Diagnostic tool title
ET703Cruise control/speed limiter buttons
ET704Brakecontact No. 1
ET705Brakecontact No. 2
ET706Stored engine status no. 1
ET707Stored engine status no. 2
ET708Stored engine status no. 3
ET709Stored engine status no. 4
ET710Stored engine status no. 5
ET711Stored engine status no. 6
ET712Stored engine status no. 7
ET713Stored engine status no. 8
ET714Stored engine status no. 9
ET715Stored engine status no. 10
ET742Stored rege.* request status No.1
ET743Stored rege.* request status No.2
ET744Stored rege.* request status No.3
ET745Stored rege.* request status No.4
ET746Stored rege.* request status No.5
ET747Stored rege.* request status No.6
ET748Stored rege.* request status No.7
ET749Stored rege.* request status No.8
ET750Stored rege.* request status No.9
ET751Stored rege.* request status No.10
ET776Recirculated exhaust gas cool.* setpoint
ET781Heater plugs

13B-286V12 MR-372-J84-13B300$101.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET143LOW-SPEED FAN ASSEMBLY RELAY CONTROL
STATUS
DEFINITIONThis status indicates whether the low speed fan assembly is active.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
If the vehicle is fitted with air conditioning, the fan assembly electrical circuit includes
2 relays. The 1
st speed fan assembly relay will be actuated when the engine coolant
temperature exceeds 99°C and its function is to cool the engine so that the engine
temperature does not exceed 102°C. If the engine coolant temperature exceeds 102°C,
the 2
nd speed fan assembly relay will be actuated and the fan will rotate faster.
Use the Wiring Diagram Technical Note, Laguna II ph2, Vel Satis ph2, Espace IV
ph2, Mégane II ph2, Scénic II ph2.
IMPORTANT:
If the vehicle is equipped with air conditioning, the engine cooling fan will operate at 1
st speed as soon as the air
conditioning compressor is activated.
Conformity check with engine stopped and ignition on.
"INACTIVE"Engine cold and air conditioning switched off
In the event of a fault, consult the interpretation of fault DF018 Low speed fan
assembly control circuit.
EDC16CP33_V18_ET143 / EDC16CP33_V1C_ET143 / EDC16CP33_V54_ET143 / EDC16CP33_V20_ET143 / EDC16CP33_V58_ET143 /
EDC16CP33_V5C_ET143 / EDC16CP33_V24_ET143 / EDC16CP33_V04_ET143 / EDC16CP33_V08_ET143 / EDC16CP33_V44_ET143 /
EDC16CP33_V4C_ET143 / EDC16CP33_V34_ET143 / EDC16CP33_V38_ET143 / EDC16CP33_V74_ET143 / EDC16CP33_V28_ET143 /
EDC16CP33_V26_ET143
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 74

13B-287V12 MR-372-J84-13B300$101.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET143
CONTINUED 1
Conformity check with the engine running and engine coolant temperature > 80°C
INACTIVE or ACTIVE, depending on the engine temperature (air conditioning switched off).
In the event of a fault, refer to the interpretation of fault DF018.
Sensor electrical conformity
"ACTIVE"When the coolant reaches 99°C, the injection computer actuates the low-speed fan
assembly relay, and status ET143 becomes ACTIVE. The relay then supplies the
fan assembly and the cooling fan begins to turn.
If status ET143 is ACTIVE, but the cooling fan is not running, perform the following
operations:
Check the condition of fuse FM15 (60 A) in the engine fuse and relay box (see MR364
(Mégane II ph2), MR370 (Scénic II ph2), MR 395 (Laguna II ph2), 402 (Vel Satis
ph2), 405 (Espace IV ph2) Mechanical, 81C, Fuses, Fuses: List and location of
components).
Disconnect the low speed and high speed relays, check that they are operating
correctly and check the condition of the relay mounting connectors (see Wiring
Diagram Technical Note, Laguna II ph2, Vel Satis ph2, Espace IV ph2, Mégane II
ph2, Scénic II ph2, component code 597).
If one of the connectors is faulty and there is a repair procedure (see Technical
Note 6015A, Electrical wiring repair, wiring: precautions for repair), repair the
connector, otherwise replace the wiring.
Check the + 12 V after relay supply to the low speed fan assembly relay on the
following connection:
•3FB of component 700.
Check the continuity and absence of interference resistance of the following
connections:
•49L between components 700 and 321,
•49B between components 262 and 321,
•3JN between components 700 and 120.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 74

13B-288V12 MR-372-J84-13B300$101.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET143
CONTINUED 2
"ACTIVE"
Check that the earth is in order on connection MAS of component 262.
If the connection or connections are faulty and there is a repair procedure (see
Technical Note 6015A, Electrical wiring repair, Wiring: Precautions for repair),
repair the wiring, otherwise replace it.
"INACTIVE"If the engine temperature is lower than 99°C, the engine cooling fan cannot switch
on and the low speed fan relay of the cannot be run.
Status ET143 should therefore be INACTIVE when the control relay and the engine
cooling fan are not supplied.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 74

13B-289V12 MR-372-J84-13B300$101.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET144HIGH-SPEED FAN ASSEMBLY RELAY CONTROL
STATUS
DEFINITIONThis status indicates whether the high speed fan assembly is active.
NOTESSpecial notes:
Only perform these tests if the parameters do not correspond with the system
operation programming.
If the vehicle is not fitted with air conditioning, low-speed fan assembly relay does not
exist. The circuit therefor only contains a single command relay to supply the engine
cooling fan. The engine cooling fan will thus have only one operating speed.
Use the Wiring Diagram Technical Note, Laguna II ph2, Vel Satis ph2, Espace IV
ph2, Mégane II ph2, Scénic II ph2.
Conformity check with engine stopped and ignition on.
"INACTIVE"Engine cold and air conditioning switched off
In the event of a fault, consult the interpretation of fault DF019 High speed fan
assembly control circuit.
Conformity check with the engine running and engine coolant temperature > 80°C
INACTIVE or ACTIVE, depending on the engine temperature (air conditioning switched off).
In the event of a fault, refer to the interpretation of fault DF019.
EDC16CP33_V18_ET144 / EDC16CP33_V1C_ET144 / EDC16CP33_V54_ET144 / EDC16CP33_V20_ET144 / EDC16CP33_V58_ET144 /
EDC16CP33_V5C_ET144 / EDC16CP33_V24_ET144 / EDC16CP33_V04_ET144 / EDC16CP33_V08_ET144 / EDC16CP33_V44_ET144 /
EDC16CP33_V4C_ET144 / EDC16CP33_V34_ET144 / EDC16CP33_V38_ET144 / EDC16CP33_V74_ET144 / EDC16CP33_V28_ET144 /
EDC16CP33_V26_ET144
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 74

13B-290V12 MR-372-J84-13B300$101.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET144
CONTINUED 1
Sensor electrical conformity
"ACTIVE"When the coolant reaches 102°C, the injection computer actuates the fan assembly
relay and status ET144 becomes ACTIVE. The relay then supplies the cooling fan.
If status ET144 is ACTIVE, but the cooling fan is not running, perform the following
operations:
Check the condition of fuse FM15 (60 A) in the engine fuse and relay box (see MR364
(Mégane II ph2), MR370 (Scénic II ph2), MR 395 (Laguna II ph2), 402 (Vel Satis
ph2), 405 (Espace IV ph2) Mechanical, 81C, Fuses, Fuses: List and location of
components).
Disconnect the low speed and high speed relays, check that they are operating
correctly and check the condition of the relay mounting connectors (see Wiring
Diagram Technical Note, Laguna II ph2, Vel Satis ph2, Espace IV ph2, Mégane II
ph2, Scénic II ph2, component code 597).
If one of the connectors is faulty and there is a repair procedure (see Technical
Note 6015A, Electrical wiring repair, wiring: precautions for repair), repair the
connector, otherwise replace the wiring.
Check the + 12 V after relay supply to the high-speed fan assembly relay on the
following connection:
•3FB of component 234.
Check the continuity and absence of interference resistance of the following
connections:
•3JP between components 234 and 120,
•49B between components 234 and 262.
Check that the earth is in order on connection MAS of component 262.
If the connection or connections are faulty and there is a repair procedure (see
Technical Note 6015A, Electrical wiring repair, Wiring: Precautions for repair),
repair the wiring, otherwise replace it.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 74