Page 56 of 198

13B-56
AFTER REPAIRDeal with any faults displayed by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$061.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF052
PRESENTINJECTORS CONTROL CIRCUITCC.1: Short circuit to +12 volts.
CC.0: Short circuit to earth.
NOTESPriority when dealing with a number of faults:
In the event of a combination of faults DF052 and DF026, DF027, DF028, and DF029,
the fault finding procedure remains the same in order to determine the faulty injector.
Special notes:
The engine stalls when the fault appears. The level 1 warning light illuminates along
with the message Faulty injection.
Switch off the ignition, check the condition and connection of the injector connectors.
Repair if necessary.
Switch off the ignition, disconnect the injectors (or the injector identified by DF026, DF027, DF028, DF029)
and switch the ignition back on.
Using the diagnostic tool, check for changes to DF052.
Is DF052 present or stored?
DF052
presentThe injectors are not defective.
Check the connection and condition of the computer 48-track brown connector B.
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance on
the following connections:
Injector 1 track 1 (+)Track A4, computer connector B
Injector 1 track 2 (earth)Track B4 computer connector B
Injector 2 track 1 (+)Track G4 computer connector B
Injector 2 track 2 (earth)Track H4 computer connector B
Injector 3 track 1 (+)Track C4 computer connector B
Injector 3 track 2 (earth)Track D4 computer connector B
Injector 4 track 1 (+)Track E4 computer connector B
Injector 4 track 2 (earth)Track F4 computer connector B
Repair if necessary.
If the fault is still present, contact the Techline.
DDCR_V44_DF052/DDCR_V48_DF052
Page 58 of 198

13B-58
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
13B
DDCR INJECTION
Vdiag No.: 44, 48
DF053
STOREDRAIL PRESSURE REGULATION FUNCTION
1.DEF: At minimum limit
2.DEF: At maximum limit
3.DEF: Below minimum threshold
4.DEF: Above maximum threshold
5.DEF: High flow current < minimum
6.DEF: High flow current > maximum
7.DEF: Low flow current < minimum
8.DEF: Low flow current > minimum
NOTESSpecial notes:
If DF053, the engine may stop, with the level 1 and 2 warning lights illuminated along
with the message Faulty injection.
Priority when dealing with a number of faults:
– DF007 Rail pressure sensor circuit,
– DF098. Fuel temperature sensor circuit.
Conditions for applying fault finding procedures to stored faults:
The fault is present with the engine running.
4.DEF
6.DEF
8.DEF
NOTESNone.
Check the connection and condition of the fuel flow actuator connector (brown IMV connector on the pump).
Repair if necessary.
Measure the resistance between tracks 1 and 2 of the flow actuator.
Replace the flow actuator if the resistance is not 5.3 Ω +
0.5 Ω at 20°C.
Check the connection and condition of the computer 48-track brown connector B.
Repair if necessary.
Check the insulation, continuity, and the absence of interference resistance on the following connection:
Computer connector B track M4 Track 1 fuel flow actuator
Repair if necessary.
Check that there is fuel present in the tank and that it is correct. Run Test 13 Diesel fuel conformity check.
Run Test 1 Low pressure circuit check.
DDCR_V44_DF053M/DDCR_V48_DF053M
DIESEL INJECTION
Fault finding – Interpretation of faults
Page 63 of 198

13B-63
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF057
STOREDWATER IN DIESEL FUEL DETECTOR CIRCUITCO.1: Open circuit or short circuit to +12 volts
CC.0: Short circuit to earth
1.DEF: Above maximum threshold (water present)
NOTESConditions for applying fault finding procedures to stored faults:
The fault is present with the engine running.
The level 1 warning light illuminates along with the message Check diesel filter.
CO.1
CC.0
NOTESNone.
Check for water in the diesel filter. Clean and replace the filter if necessary.
Check the condition and connection of the 3-track connector of the water detector.
Repair if necessary.
Check the connection and condition of the grey 32-track connector C of the computer.
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance on the following connections:
Sensor connector track 3 Earth
Sensor connector track 2 Track B3 computer connector C
Sensor connector track 1 Track A3 computer connector B
Repair if necessary.
1.DEF
NOTESNone.
Bleed the diesel filter.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
DDCR_V44_DF057M/DDCR_V48_DF057M
Page 64 of 198

13B-64
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF059
STOREDCOMBUSTION MISFIRES ON CYLINDER 1
NOTESSpecial notes:
If DF059, the engine speed is maintained at 1000 rpm, the engine performance is
reduced to 75%, and the level 1 warning light illuminates along with the message
Faulty injection.
Conditions for applying fault finding procedures to stored faults:
The fault is present with the engine idling.
Priority when dealing with a number of faults:
– DF026 Cylinder 1 injector control circuit (CC or CO).
– DF053 Pressure regulation.
Run TEST 13 Diesel fuel conformity check.
Run TEST 3 Injector check.
Check the engine compression.
Repair if necessary.
Check the valve clearance and adjust if necessary.
Check the inlet ducts and the EGR valve, and clean them if necessary.
Replace the injector.
DDCR_V44_DF059M/DDCR_V48_DF059M
Page 65 of 198

13B-65
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF060
STOREDMISFIRING ON CYLINDER 2
NOTESSpecial notes:
If DF060, the engine speed is maintained at 1000 rpm, the engine performance is
reduced to 75%, and the level 1 warning light illuminates along with the message
Faulty injection.
Conditions for applying fault finding procedures to stored faults:
The fault is present with the engine idling.
Priority when dealing with a number of faults:
– DF027 Cylinder 2 injector control circuit (CC or CO).
– DF053 Pressure regulation.
Run TEST 13 Diesel fuel conformity check.
Run TEST 3 Injector check.
Check the engine compression.
Repair if necessary.
Check the valve clearance and adjust if necessary.
Check the inlet ducts and the EGR valve, and clean them if necessary.
Replace the injector.
DDCR_V44_DF060M/DDCR_V48_DF060M
Page 66 of 198

13B-66
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF061
STOREDMISFIRING ON CYLINDER 3
NOTESSpecial notes:
If DF061, the engine speed is maintained at 1000 rpm, the engine performance is
reduced to 75%, and the level 1 warning light illuminates along with the message
Faulty injection.
Conditions for applying fault finding procedures to stored faults:
The fault is present with the engine idling.
Priority when dealing with a number of faults:
– DF028 Cylinder 3 injector control circuit (CC or CO).
– DF053 Pressure regulation.
Run TEST 13 Diesel fuel conformity check.
Run TEST 3 Injector check.
Check the engine compression.
Repair if necessary.
Check the valve clearance and adjust if necessary.
Check the inlet ducts and the EGR valve, and clean them if necessary.
Replace the injector.
DDCR_V44_DF061M/DDCR_V48_DF061M
Page 67 of 198

13B-67
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF062
STOREDMISFIRING ON CYLINDER 4
NOTESSpecial notes:
If DF062, the engine speed is maintained at 1000 rpm, the engine performance is
reduced to 75%, and the level 1 warning light illuminates along with the message
Faulty injection.
Conditions for applying fault finding procedures to stored faults:
The fault is present with the engine idling.
Priority when dealing with a number of faults:
– DF029 Cylinder 4 injector control circuit (CC or CO).
– DF053 Pressure regulation.
Run TEST 13 Diesel fuel conformity check.
Run TEST 3 Injector check.
Check the engine compression.
Repair if necessary.
Check the valve clearance and adjust if necessary.
Check the inlet ducts and the EGR valve, and clean them if necessary.
Replace the injector.
DDCR_V44_DF062M/DDCR_V48_DF062M
Page 68 of 198

13B-68
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF089
PRESENTINLET MANIFOLD PRESSURE SENSOR CIRCUIT
1.DEF: Permanent low level
2.DEF: Permanent high level
3.DEF: Below minimum threshold
4.DEF: Above maximum threshold
5.DEF: Inconsistency
6.DEF: At maximum limit
7.DEF: At minimum limit
NOTESPriority when dealing with a number of faults:
– DF113 Sensor supply voltage.
Special notes:
The level 1 warning light illuminates along with the message Faulty injection.
K9K 722 ENGINE
1.DEF-2.DEF
3.DEF-4.DEF
NOTESNone.
Check the connection and condition of the 4-track connector of the inlet pressure sensor.
Repair if necessary.
Check the connection and condition of the computer 48-track brown connector B.
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance on the following connections:
Sensor connector track 1 track C3 computer connector B
Sensor connector track 2 track J2 computer connector B
Sensor connector track 3 track C1 computer connector B
Sensor connector track 4 track C2 computer connector B
Repair if necessary.
DDCR_V44_DF089P/DDCR_V48_DF089P