DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-80V3 MR-372-J84-13B250$360.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF053
CONTINUED 2
1.DEF
NOTESNone
Ch eck the rail pressure regulator connectors.
Ch eck the in jection computer connections.
Ch eck the lo w p ressu re circu it b y runningtest 2Low pressure circuit check.
Ch eck the conformityof the fuel used by applyingtest 10 Diesel f uel conformity check.
Ch eck the in jector return flow, runtest 8 Poor injector operation.
Ch eck theoperation of the overpressure valve if fitted to the vehicle, run test11 Incorrectopera tion of the
ov erpressure valve.
Re pair if n ecessa ry.
Measure theresistanceof the rail press u r e regulator betweentracks 1 and 2.
If the resistance is not3±1Ωat20˚C,replacetheinjection pump.
Ch eckthe continuity and absence of interference resistanceof the followingconnections:
Injection computer brown 48-track
connectorB,track M4Track 2 of the rail pressure regulator (fuel flow actuator)
Injection supply relay mountingtrack 5 track 1 of the rail pressure regulator (fuel flow actuator)
Re pair if n ecessa ry.
Ch eck the rail pressuresensor using the interpretation ofDF0 07 Rail pressure sensor circuit.
Re pair if n ecessa ry.
If the fault isstill present,check t hat thecomputeroutput is working correctly.
●Either using anammeter:
With the regulator connected, connect the current clamp to the regulator'strack 1connection,respecting t he
direction of the current.
Cle ar a ny rail pressure sensor faults and use commandAC011 Rail pressureregulator.
Th eammeter should display ten cycles of two successive currents:~0.6Athen~2A.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-81V3 MR-372-J84-13B250$360.mif
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16
PROGRAM No.: C1
Vdiag No.: 51
*Opening cyclic ratioDF053
CONTINUED 3
●Or usingavoltmeter:
With the regulator connected, connect the negative terminal of the voltmeter totrack 2of the rail pressure regulator
and thepositive terminal totrack 1.Clear any fuel pressure solenoid valve faults, then run commandAC011 Rail
pressure re gulator:
Thevoltmeter should display two successive voltage readings:
~3.15voltsfor an opening cycle ratio of 25% then~9.45Vfor an opening cycle ratio of 75% (ten cycles).
●Or using an oscillos cope(at 5 V range/division a nd 1 ms/div tim e base):
With the regulator connected, connect the negative terminal of the oscill oscope to the battery earth and the positive
terminal totrack 2of the fuel pressure solenoid valve, clear any r ail pressure regulator faults, and r un command
AC0 11 R ail pressure regulator:
theoscillo sco pe sh ould disp lay a square pulse signal with an a mplitude o f 1 2.5 V at a frequency of 1 85 Hz (with a n
OCR* alternating successively from 25 to 75%).
if the measurement does not show any control or continuous voltage, contact the techline.
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-83V3 MR-372-J84-13B250$360.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF053
CONTINUED 5
In the event of rail overpressure:
Check the operation of the injectors: refer to test 8 Poor injector operation.
Check that the rail pressure sensor is operating correctly using command AC011 Rail pressure regulator. Display
parameter PR038 Rail pressure, and refer to the conformity check to check the operating values.
If these checks do not reveal any faults, and if the fault is still present, replace the injection pump.
in the event of rail underpressure:
Check that the rail pressure sensor is operating correctly using command AC011 Rail pressure regulator. Display
parameter PR038 Rail pressure, and refer to the conformity check to check the operating values.
Check the low pressure diesel circuit priming.
Check the conformity of the diesel filter connections.
Check the condition of the filter (clogging and water saturation).
Check that there are no air bubbles between the filter and the high pressure pump.
Check the low and high pressure diesel fuel circuit sealing (visual inspections, odour, etc.): pump housing,
pressure relief valve, pipes, rail and injector unions, injector wells, etc.
Check the operation of the injectors: refer to test 8 Poor injector operation.
Carry out the necessary operations.
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.
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-84V3 MR-372-J84-13B250$360.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF054
PRESENT
OR
STORED
TURBOCHARGING SOLENOID VALVE CONTROL CIRCUIT
CC.1 : Short circuit to + 12 V
CC.0 : Short circuit to earth
CO : Open circuit
1.DEF : Internal electronic fault
2.DEF : Inconsistent signal
3.DEF : Below minimum threshold
4.DEF : Above maximum threshold
5.DEF : Permanent high signal
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after:
–the engine is started,
–a road test,
–actuator command AC004 Turbocharging solenoid valve.
Special notes:
If the fault is present:
–turbocharging is no longer authorised,
–the EGR function is inhibited,
–the vehicle performance is reduced,
–the level 1 warning light is lit,
–If CC.0 is present, the OBD warning light will come on after three consecutive driving
cycles (starting + 5 seconds + switching off the ignition and waiting for 1 minute).
Use bornier Ele. 1681 or Ele. 1590 for any operation on the injection computer
connectors.
CC.1
4.DEF
5.DEF
NOTESNone
Check the turbocharging solenoid valve connections.
Check the injection computer connections.
Repair if necessary.
Measure the resistance of the turbocharging solenoid valve between tracks 1 and 2:
If the resistance displayed is not 15.4 ± 0.7 Ω at 20˚C, replace the turbocharger solenoid valve.
Check the continuity and insulation from the + 12 V feed of the following connection:
Injection computer grey 32-track connector C,
track E1Track 1 turbocharging solenoid valve
Repair if necessary.
If the fault is still present, replace the turbocharging solenoid valve.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V51_DF054
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-85V3 MR-372-J84-13B250$360.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF054
CONTINUED 1
CC.0
CO
3.DEF
NOTESNone
Check the turbocharging solenoid valve connections.
Check the injection computer connections.
Repair if necessary.
Measure the resistance of the turbocharging solenoid valve between tracks 1 and 2:
If the resistance displayed is not 15.4 ± 0.7 Ω at 20˚C, replace the turbocharger solenoid valve.
Check the continuity and insulation against earth of the following connections:
Injection computer grey 32-track
connector C, track E1Track 1 turbocharging solenoid valve
UPC PPM1 connector Track 1 Track 2 turbocharger solenoid valve
Repair if necessary.
If the fault is still present, replace the turbocharging solenoid valve.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-86V3 MR-372-J84-13B250$360.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
*Opening cyclic ratioDF054
CONTINUED 2
1.DEF
2.DEF
NOTESNone
Check the turbocharging solenoid valve connections.
Check the injection computer connections.
Repair if necessary.
Measure the resistance of the turbocharging solenoid valve between tracks 1 and 2:
If the resistance displayed is not 15.4 ± 0.7 Ω at 20˚C, replace the turbocharger solenoid valve.
Check the continuity and insulation against earth of the following connections:
Injection computer grey 32-track
connector C, track E1Track 1 turbocharging solenoid valve
UPC PPM1 connector Track 1 Track 2 Turbocharger solenoid valve
If the fault is still present, check that the computer output is working correctly.
With the turbocharging solenoid valve connected:
Using a voltmeter:
–Connect the negative terminal of the voltmeter to track 1 of the solenoid valve and the negative terminal to
track 2.
–Clear any solenoid valve faults and run command AC004 Turbocharger solenoid valve.
The voltmeter should display ten cycles of two successive voltages: ~ 2.5 V (opening cyclic ratio* of 20%) then
~ 8.75 V (opening cyclic ratio* of 70%).
Or using an oscilloscope (at 5 V range/division and 1 ms/div time base):
–Connect the negative terminal of the oscilloscope to the battery earth and the positive terminal to track 2 of the
solenoid valve.
–Clear any solenoid valve faults and run command AC004 Turbocharging solenoid valve.
The oscilloscope should display a square wave signal with an amplitude of 12.5V (~ battery voltage) at a frequency
of 140 Hz (with an OCR changing successively 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.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B -101V3 MR-372-J84-13B250$405.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF070
PRESENT
OR
STOREDCLUTCH SWITCH CIRCUIT
1.DEF : No signal
2.DEF : Inconsistent signal
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after the clutch pedal is depressed, or during a road test.
Special notes:
If this fault is present, the cruise control/speed limiter function will be inhibited.
Use bornier Ele. 1681 or Ele. 1590 for any operation 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.
Check the conformity and adjustment of the clutch switch (position, connection).
–display status ET405 Clutch pedal switch:
–when the clutch pedal is engaged, status ET405 should be INACTIVE,
–when the clutch pedal is disengaged, status ET405 should be ACTIVE.
If these checks are not OK, replace the clutch switch.
If the check show the correct results:
Check the connections of the clutch pedal switch.
Check the injection computer connections.
Repair if necessary.
Check continuity and make sure there is no interference resistance on the following connection:
Injection computer black 32-track connector A,
track C4Track 1 clutch pedal switch
Repair if necessary.
Check for the presence of earth on track 2 of the clutch pedal switch.
Repair if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V51_DF070
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B -106V3 MR-372-J84-13B250$405.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF097
CONTINUED
Check the continuity and absence of interference resistance of the following connections:
Injection computer brown 48-track connector B,
Track D1Track 2 Camshaft sensor
Injection computer brown 48-track connector B,
Track A1Track 1 Camshaft sensor
With the ignition on and the camshaft sensor connected:
Use a voltmeter to measure the voltage between tracks 1 and 3 of the camshaft sensor:
The voltage displayed should be equal to the battery voltage 0.08 V)
–If the voltage is outside permitted tolerance values, take the measurement again on the connector, with the
camshaft sensor disconnected,
–If the voltage is still outside permitted tolerance values with the sensor disconnected.
Check for continuity and absence of interference resistance on the following connection:
Camshaft sensor, track 3 Track 5 injection supply relay mounting
–If the measured voltage is correct with the sensor disconnected.
Measure the camshaft sensor resistance between tracks 2 and 3.
Replace the sensor if its resistance is not 10,250 ± 500 Ω at 20˚C
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.