DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-61V3 MR-372-J84-13B250$360.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51DIESEL INJECTION
Fault finding – Interpretation of faults
DF039
PRESENT
OR
STOREDINLET AIR TEMPERATURE SENSOR CIRCUIT
CO.1 : Short circuit or open circuit to + 12 V
CC.0 : Short circuit to earth
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after one attempt to start the engine, or with the engine
running.
Special notes:
If the fault is present:
–the air temperature value enters defect mode, i.e. PR059 Inlet air temperature =
20˚C.
–the EGR function is inhibited,
–the level 2 warning light is lit.
Use bornier Ele. 1681 or Ele. 1590 for any operation on the injection computer
connectors.
CO.1
NOTESNone
Check the air flowmeter connections.
Check the injection computer connections.
Repair if necessary.
Check the continuity of the following connection:
Injection supply relay mounting Track 5 track 4 air flow sensor connector
Repair if necessary.
Check the continuity and insulation against + 12 V of the following connections:
Injection computer brown 48-track connector B,
track G2Track 1 air flowmeter connector
Injection computer brown 48-track connector B, track E2 Track 2 air flowmeter connector
Injection computer brown 48-track connector B, track B4 Track 3 air flowmeter connector
Injection computer brown 48-track connector B, track L4 Track 6 air flow sensor connector
Repair if necessary.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V51_DF039
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-63V3 MR-372-J84-13B250$360.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF040
PRESENT
OR
STOREDCYLINDER 1 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 + switching off the ignition and waiting for 1 minute).
If the fault is present, the injection on cylinder 1 is disabled.
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 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 1.
Check the injection computer connections.
Repair if necessary.
Disconnect injector no. 1.
Measure the resistance of injector no. 1 between tracks 1 and 2.
Replace the injector if it has a short circuit (R = 0 Ω) or open circuit (infinite resistance measurement).
Otherwise reconnect injector no. 1.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V51_DF040
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-65V3 MR-372-J84-13B250$360.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF041
PRESENT
OR
STOREDCYLINDER 2 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 + switching off the ignition and waiting for 1 minute).
If the fault is present, the injection on cylinder 2 is disabled.
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 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. 2.
Check the injection computer connections.
Repair if necessary.
Disconnect injector no. 2.
Measure the resistance of injector no. 2 between tracks 1 and 2.
Replace the injector if it has a short circuit (R = 0 Ω) or open circuit (infinite resistance measurement).
Otherwise reconnect injector no. 2.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V51_DF041
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-67V3 MR-372-J84-13B250$360.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF042
PRESENT
OR
STOREDCYLINDER 3 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 + switching off the ignition and waiting for 1 minute).
If the fault is present, the injection on cylinder 3 is disabled.
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 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. 3.
Check the injection computer connections.
Repair if necessary.
Disconnect injector no.3.
Measure the resistance of injector no. 3 between tracks 1 and 2.
Replace the injector if it has a short circuit (R = 0 Ω) or open circuit (infinite resistance measurement).
Otherwise reconnect injector no. 3.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V51_DF042
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-69V3 MR-372-J84-13B250$360.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
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 + switching off the ignition and waiting for 1 minute).
If the fault is present, the injection on cylinder 4 is disabled.
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 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 it has a short circuit (R = 0 Ω) or open circuit (infinite resistance measurement).
Otherwise reconnect injector no. 4.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V51_DF043
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-71V3 MR-372-J84-13B250$360.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
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.
Battery voltage that is too low can cause the level 1 fault warning light to come on
thereby causing other faults to appear.
It is then not possible to start the engine.
Use bornier Ele. 1681 or Ele. 1590 for any operation on the injection computer
connectors.
1.DEF
NOTESNone
Check the charge circuits:
–Condition of the battery.
–Condition of the alternator (full fault finding procedure).
–Carry out the necessary repairs.
2.DEF
NOTESNone
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 Supply relay track 5track M2 connector B of the engine management
computer
track 4 of Protection and Switching Unit
grey connectortrack G1 connector A of the engine management
computer
Battery earthtracks G4, H4, H1 injection computer connector A
Repair if necessary.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V51_DF046
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-72V3 MR-372-J84-13B250$360.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF047
PRESENT
OR
STOREDCOMPUTER SUPPLY VOLTAGE
1.DEF : Voltage outside permitted range of values
NOTESConditions for applying the fault finding procedure to stored faults:
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.
Battery voltage that is too low can cause the level 1 fault warning light to come on
thereby causing other faults to appear.
Use bornier Ele. 1681 or Ele. 1590 for any operation on the injection computer
connectors.
Check continuity and make sure there is no interference resistance on the following connection:
injection computer black 32-track connector A, track D1 track 1 UPC black connector
Repair if necessary.
Check fuse F5D (5A) located on the UPC.
Check the condition of the injection control unit supply relay (50A) located on the relay plate in the engine
connection unit under the Protection and Switching Unit (no false contacts, 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 another check with the diagnostic tool.
EDC16_V51_DF047
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B-73V3 MR-372-J84-13B250$360.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF049
PRESENT
OR
STOREDREFRIGERANT SENSOR CIRCUIT
CC.1 : Short circuit to + 12 V
CO.0 : Open circuit or short circuit to earth
NOTESConditions 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 Ele. 1681 or Ele. 1590 for any operation on the injection computer
connectors.
CC.1
NOTESNone
Check the refrigerant pressure sensor connectors.
Check the injection computer connections.
Repair if necessary.
Check that the configuration reading LC009 Air conditioning is WITH.
If LC009 is WITHOUT, run command RZ005 Programming to reinitialise the vehicle configurations.
If necessary, operate the air conditioning to reconfigure the computer to WITH.
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, run fault finding on the air conditioning (see 62A, Air conditioning).
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 another check with the diagnostic tool.
EDC16_V51_DF049