13B-58
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
DF043
PRESENT
OR
STOREDCYLINDER 4 INJECTOR CIRCUIT
CC.1 : short circuit to + 12 V
CO : open circuit
CC : short circuit
1.DEF : Injector control
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after the engine has been started.
Special notes:
If CC.1, CC, or 1.DEF is present, the level 2 warning light is lit.
If CO is present the level 1 warning light is lit.
If CO is still present, the OBD warning light will come on after three consecutive driving
cycles (starting + 5 seconds + switch off the ignition and wait 40 seconds.).
If the fault is present, the injection on cylinder 1 is disabled.
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 test enables the condition and the conformity of the engine wiring harness to be checked.
CC.1
CO
CC
1.DEF
NOTESNone.
Check the connections on injector no 4.
Check the injection computer connections.
Repair if necessary.
Disconnect injector no. 4.
Measure the resistance of injector no. 4 between tracks 1 and 2.
Replace the injector if there is a short circuit (R = 0Ω) or an open circuit (infinite resistance measurement).
Otherwise, reconnect injector no. 4.
Check the continuity, and the absence of resistance of the following connections:
Injection computer grey 32-track connector C, track H3 Track 2 injector no. 4
Injection computer grey 32-track connector C, track G1 Track 1 injector no. 4
If the fault is still present: run test 1 INJECTOR TEST.
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_DF043/EDC16_V48_DF043/EDC16_V4C_DF043
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
13B-67
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
CONTINUED 1
CC.0
CO
NOTESNone.
Check the fuel flow regulator connections.
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 flow 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 earth of the following connection:
Injection computer brown 48-track connector B, track M4 Track 2 of the fuel flow regulator
With the ignition on, check for + 12 V after relay feed on track 1 of the fuel flow regulator.
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.
13B-68
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
*Opening cyclic ratioDF053
CONTINUED 2
1.DEF
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 flow regulator between tracks 1 and 2.
If the resistance is not 3Ω ±1 at 20°C, replace the injection pump.
Check the continuity and absence of interference resistance of the following connections:
Injection computer brown 48-track connector B, track M4 Track 2 of the fuel flow regulator
UPC, connector PPM1, track 1 Track 1 of the rail pressure
regulator
Repair if necessary.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
13B-69
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
CONTINUED 3
2.DEF to
8.DEF
NOTESNone.
Check the operation of the overpressure valve if fitted to the vehicle, run test 6 Incorrect operation of the
overpressure valve.
In the event of rail overpressure:
Check that the injectors are operating correctly (see Component test, Test 1, Injector Test).
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 indicate any abnormality 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 that the injectors are operating correctly (see Component test, Test 1, Injector Test).
Carry out the necessary operations.
If the fault is still present, replace the injection pump.
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.
13B-102
DIESEL INJECTION
Fault finding - Interpretation of faults
13B
V10 MR-372-J84-13B150$376.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
DF276
PRESENT
OR
STOREDINJECTOR CODE PROGRAMMING
1.DEF : Internal electronic fault during programming
2.DEF : no code stored
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after:
– replacing injector(s),
– replacing the injection computer.
Special notes:
If the fault is present:
– the engine speed is limited,
– the level 1 warning light is lit.
1.DEF
NOTESNone.
Program the injector codes using command SC002 Enter injector codes.
Carry out the procedure described in the Interpretation of commands section.
If the fault is still present, after the ignition is switched off and dialogue is established, contact the Techline.
2.DEF
NOTESThis fault appears on any blank computer (new or
recently reprogrammed).
WARNING
A computer without the IMA option can be replaced by a computer with this option. The codes are not
saved during command SC003 Save computer data.
In this case, status ET104 Injector code use changes to YES or FAULTY, fault DF276 will be present, and
the engine will operate in defect mode.
– Program the injector codes using:
command SC002 Enter injector codes, (follow the procedure described in the Interpretation of commands
section).
– After the codes have been entered:
– switch off the ignition,
– wait until power latch closes down and then switch the ignition back on,
– establish dialogue and clear the fault memory,
– end of operation.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test, then check with the diagnostic tool.
EDC16_V44_DF276/EDC16_V48_DF276/EDC16_V4C_DF276
13B-109
DIESEL INJECTION
Fault finding - Conformity check13B
V10 MR-372-J84-13B150$423.mif
EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4CDIESEL INJECTION
Fault finding - Conformity check
MAIN COMPUTER STATUSES AND PARAMETERS
NOTESOnly carry out this conformity check after carrying out a complete check using
the diagnostic tool. The values shown in this conformity check are given as examples.
Test conditions: engine stopped, ignition on.
Order FunctionParameter or Status
Check or ActionDisplay and Notes Fault finding
1 Vehicle impact ET077:Impact detected YES or NOIn the event of a fault, refer
to the interpretation of fault
DF069 Impact detected
signal.
2 Power supplyET001: + After ignition
computer feedPRESENT, ignition on
In the event of a fault carry
out fault finding on the
charge circuit.
PR071: Computer feed
voltage9 V < X < 16 V
PR358: Sensor
reference
voltage3.47 V < X < 3.75 V
(Average of the three
sensor feed voltages)In the event of a fault,
consult the interpretation of
faults DF011 Sensor feed
voltage no. 1, DF012
Sensor feed voltage no. 2
and DF013 Sensor feed
voltage no. 3.
PR076: Refrigerant
sensor voltage0V
for fault DF049 Refrigerant
sensor circuit.
3 Engine running PR055: Engine speedGives the engine's
speed in rpm.
With the ignition on
0rpmIn the event of a fault,
consult the interpretation of
fault DF005 Engine speed
sensor circuit.
4Injection
configurationET104: Injector code
useYES or NO
or
DEFECTIVEThis status indicates that the
IMA function is activated. In
the event of a fault, refer to
the fault finding procedure
for fault DF276 Injector
code programming.
EDC16_V44_CCONF/EDC16_V48_CCONF/EDC16_V4C_CCONF
MR-372-J84-13B150$423.mif
13B-115
DIESEL INJECTION
Fault finding - Conformity check13B
V10 MR-372-J84-13B150$423.mif
EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4C
FUEL CIRCUIT (continued)
NOTESOnly carry out this conformity check after carrying out a complete check using the
diagnostic tool. The values shown in this conformity check are given as examples.
Test conditions: engine stopped, ignition on.
Order FunctionParameter or Status
Check or ActionDisplay and Notes Fault finding
4 Flow PR017: Fuel flowIgnition on
PR017= 0mg/stNONE
5 Rail currentPR006: Rail pressure
regulator currentX = 395 mA
Default value:
1600 mA or 4 mAIn the event of a fault,
consult the interpretation
of fault DF007 Rail
pressure sensor circuit.
PR007: Rail pressure
regulator current
setpointX = 400 mA
Default value:
1600 mA
6 Sensor voltagePR082: Fuel
temperature
sensor voltage1.8 V < X < 3 V
Default value: 5 VIn the event of a fault,
consult the interpretation
of fault DF098 Fuel
temperature sensor
circuit.
PR080: Rail pressure
sensor voltageX= 0.5V
Default value: 5 VIn the event of a fault, refer
to the interpretation of fault
DF013 Sensor supply
voltage no. 3.
7 Fuel flowPR364:Cylinder no. 1
fuel flow
correction
0.0 mg/stIn the event of a fault, refer
to test 1 INJECTOR TEST. PR405:Cylinder no. 2
fuel flow
correction
PR406:Cylinder no. 3
fuel flow
correction
PR365:Cylinder no. 4
fuel flow
correction