Fault interpretation
| DF001 PRESENT | COOLANT TEMPERATURE SENSOR CIRCUIT CO.1: Open circuit or short circuit to +12 V |
INSTRUCTIONS
Special notes: If fault DF001 is present, the cooling fan unit runs at low speed (cooling fan unit 1).
If cooling fan unit 1 fails, start cooling fan unit 2 on vehicles fitted with air conditioning.
| Check the connection and condition of the 4-way coolant temperature sensor connector. Repair if necessary. |
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Measure the resistance of the coolant temperature sensor between pins 2 and 3. Replace the coolant temperature sensor if the resistance is not 2252 Ω ± 112.16 Ω at 25 °C. |
| Check the insulation, continuity and absence of parasitic resistance of the following wiring: Sensor connector pin 2 → Pin H3 of ECU connector B Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF003 PRESENT | ATMOSPHERIC PRESSURE SENSOR CIRCUIT CO.0: Open circuit or short circuit to ground |
INSTRUCTIONS
Special notes : Nothing to report.
Contact your techline.
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF005 PRESENT OR STORED | ENGINE SPEED SENSOR CIRCUIT 1.DEF: Inconsistency |
INSTRUCTIONS
Special notes: If fault 1.DEF, 2.DEF, 3.DEF or 6.DEF is present: stop the engine and illuminate the severity 1 warning light with the message "injection fault".
If fault 4.DEF or 5.DEF is present: 75% engine performance, no warning light illuminated.
Conditions for applying the diagnosis for a stored fault: the fault is declared present while cranking or at idle (600 rpm).
| Check the connection and condition of the 2-way engine speed sensor connector. Repair if necessary. Make sure the sensor is correctly fitted to the engine. |
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Measure the resistance across the engine speed sensor terminals. Replace the engine speed sensor if the resistance is not approximately 760 Ω. |
| Check the insulation, continuity and absence of parasitic resistance of the following wiring: Sensor connector pin A → Pin F2 of ECU connector B Repair if necessary. |
| Check that the flywheel ring gear is not damaged (missing teeth). |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF007 STORED | RAIL PRESSURE SENSOR CIRCUIT CC.0: Short circuit to ground |
INSTRUCTIONS
Priority when multiple faults are present: if faults DF007 and DF113 are both present, diagnose the sensor supply voltage fault DF113 first.
Condition for applying the diagnosis for a stored fault: fault declared present following engine start.
Special notes: if DF007 is present, engine stops and cannot restart. Severity 1 warning lamp lights with the message "injection fault".
| Check the connection and condition of the 3-way rail pressure sensor connector. Repair if necessary. |
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Check the insulation, continuity and absence of parasitic resistance of the following wiring: Sensor connector pin 2 → ECU connector B pin D3 Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF008 PRESENT | ACCELERATOR PEDAL POTENTIOMETER TRACK 1 CIRCUIT CO.0: Open circuit or short to ground |
INSTRUCTIONS
Processing priority when multiple faults occur: if DF008 and DF113 occur together, handle the sensor supply voltage fault DF113 first.
Special notes: if fault DF008 is present, engine speed is maintained above 1000 rpm. Severity 1 warning lamp lights with the message "injection fault".
If faults DF008 and DF009 are both present: engine speed is set to 1300 rpm. Severity 1 warning lamp lights with the message "injection fault".
1.DEF - 3.DEF
INSTRUCTIONS
Special notes : Nothing to report.
Disconnect connector A from the ECU and the accelerator pedal potentiometer connector.Check the insulation between pin H2 and pin F3 on ECU connector A.
Repair if necessary.
If the fault persists, replace the accelerator pedal potentiometer.
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
CC.0 CC.1 2.DEF
INSTRUCTIONS
Special notes : Nothing to report.
| Check the condition of the 6-way accelerator pedal potentiometer connector. Repair if necessary. |
| Check the condition of the 32-way ECU connector A. Repair if necessary. |
| Measure the resistance across the accelerator pedal potentiometer terminals: Pin 5 (ground) → Pin 3 (+ 5 V) Replace the accelerator pedal potentiometer if the resistance is not 1.7 kΩ ±0.9 kΩ. |
| Check the insulation, continuity and absence of parasitic resistance of the following wiring: Sensor connector pin 3 → ECU connector A pin G2 Repair if necessary. |
| Disconnect connector A from the ECU and the accelerator pedal potentiometer connector. Check the insulation between pin H2 and pin F3 on ECU connector A. Repair if necessary. If the fault persists, replace the accelerator pedal potentiometer. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF009 PRESENT | ACCELERATOR PEDAL POTENTIOMETER TRACK 2 CIRCUIT CO.0: Open circuit or short circuit to ground |
INSTRUCTIONS
Processing priority when multiple faults occur: if DF009 and DF113 occur together, handle the sensor supply voltage fault DF113 first.
Special notes: if fault DF009 is present, engine speed is maintained above 1000 rpm. Severity 1 warning lamp lights with the message "injection fault".
If faults DF009 and DF008 are both present: engine speed is set to 1300 rpm. Severity 1 warning lamp lights with the message "injection fault".
CO.0
INSTRUCTIONS
Special notes : Nothing to report.
| Check the condition of the 6-way accelerator pedal potentiometer connector. Repair if necessary. |
| Check the condition of the 32-way ECU connector A. Repair if necessary. |
| Measure the resistance across the accelerator pedal potentiometer terminals. Pin 6 (ground) → Pin 2 (+ 5 V) Replace the accelerator pedal potentiometer if the resistance is not 2.85 kΩ ±2.05 kΩ. |
| Disconnect connector A from the ECU and the accelerator pedal potentiometer connector. Check the insulation to ground of pin F3 on ECU connector A. Repair if necessary. |
| Check the continuity of the connection between: Sensor connector pin 1 → ECU connector A pin F3 Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
CC.1
INSTRUCTIONS
Special notes : Nothing to report
| Check the condition of the 6-way accelerator pedal potentiometer connector. Repair if necessary. |
| Check the condition of the 32-way ECU connector A. Repair if necessary. |
| Measure the resistance across the accelerator pedal potentiometer terminals. Pin 6 (ground) → Pin 2 (+ 5 V) Replace the accelerator pedal potentiometer if the resistance is not 1.7 kΩ ±0.7 kΩ. |
| Check the continuity, insulation and absence of parasitic resistance of the connection: Sensor connector pin 2 → ECU connector A pin F2 Repair if necessary. |
| Disconnect connector A from the ECU and the accelerator pedal potentiometer connector. Check the insulation to +12 V of pins F2 and F3 on ECU connector A. Repair if necessary. |
| Check the continuity of the connections: Sensor connector pin 2 → ECU connector A pin F2 |
| Disconnect connector A from the ECU and the accelerator pedal potentiometer connector. Check the insulation between pin F2 and pin F3 on ECU connector A. Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF010 STORED | EGR POSITION SENSOR CIRCUIT CO.0: Open circuit or short to ground |
INSTRUCTIONS
Processing priority when multiple faults occur: if DF010 and DF113 occur together, handle the sensor supply voltage fault DF113 first.
Diagnostic application condition for stored fault: the fault is declared present after engine start.
| Check the connection and condition of the 6-way exhaust gas recirculation (EGR) solenoid valve connector. Repair if necessary. |
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Measure the resistance across the exhaust gas recirculation (EGR) solenoid valve terminals. Replace the solenoid valve if the resistance is not 4 kΩ ±1.6 kΩ at 20 °C between pins 2 and 4, or 1 kΩ ±0.5 kΩ at 20 °C between pins 4 and 6. |
| Check the insulation, continuity and absence of parasitic resistance of the following wiring: Sensor connector pin 2 → ECU connector B pin B1 Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF014 PRESENT | VEHICLE SPEED (VE) INFORMATION CIRCUIT |
INSTRUCTIONS
Special notes : Nothing to report.
On this type of vehicle, the ABS or an additional module (if the vehicle is not fitted with ABS) sends the vehicle speed on the CAN.Perform the multiplex network test to be able to work on the CAN network (fault on CAN H and CAN L lines between injection and ABS). Also check for faults in the ABS system or in the system supplying vehicle speed.
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF015 PRESENT | MAIN RELAY CONTROL CIRCUIT 1.DEF: Permanently low level |
INSTRUCTIONS
Special notes: The main relay is integrated into the UPC.
| Check the main relay supply fuse in the engine compartment (30 A fuse) on the UPC. Replace the fuse if necessary. |
| Check the condition and connection of the 12-way brown PEM D connector and the 4-way black PPM1 connector on the UPC. Repair if necessary. |
| Check the condition of the 32-way connector C. |
| Check the insulation, continuity and absence of parasitic resistance of the following wiring: ECU connector C pin F1 → UPC 12-way brown PEM D connector pin 2 Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF016 STORED | EGR CONTROL CIRCUIT CO.0: Open circuit or short to ground |
INSTRUCTIONS
Diagnostic application condition for stored fault: fault declared present with engine at idle.
Special notes: If fault DF016 is present, engine instability may occur, up to engine stall.
Hard or impossible starting when cold. Severity 1 warning lamp on with the message "injection fault".
| Check the connection and condition of the 6-way exhaust gas recirculation (EGR) solenoid valve connector. Repair if necessary. |
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Measure the resistance at the terminal of the exhaust gas recirculation (EGR) solenoid valve. Replace the solenoid valve if the resistance is not 4 kΩ ±1.6 kΩ at 20 °C between pins 2 and 4, or 1 kΩ ±0.5 kΩ at 20 °C between pins 4 and 6. |
| Check for 12 Volts APC on the connector side, pin 1, at the EGR valve connector. |
| Check the insulation, continuity and absence of parasitic resistance of the following wiring: + APC: PPM1 connector G, black, UPC pin 3 → EGR solenoid valve pin 1 Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF017 PRESENT | GLOW PLUG CONTROL UNIT CIRCUIT CO.0: Open circuit or short circuit to ground |
INSTRUCTIONS
Particularities: If DF017 is present, hard starting (or impossible when cold). If CC.1: continuous glow plug control with risk of damage and risk of engine failure.
| Check the condition and connection of the glow plug control unit connector. Repair if necessary. |
| Check the condition of the 32-way ECU connector C. Repair if necessary. |
| Check the insulation, continuity and absence of parasitic resistance of the following wiring: 12 Volts APC → Pin 3 glow plug control unit Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF024 PRESENT | LOW PRESSURE ACTUATOR CONTROL CIRCUIT CO.0: Open circuit or short circuit to ground |
INSTRUCTIONS
Particularities: If fault DF024 with CO.0 or CC.1, severity 1 warning lamp on with the message "injection fault".
Fuel flow actuator fully open, clicking and engine stop to prevent overspeed.
| Check the condition and connection of the flow actuator connector. Repair if necessary. |
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Measure the resistance between pins 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 insulation, continuity and absence of parasitic resistance of the wiring: ECU connector B pin M4 → Pin 1 fuel flow actuator Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF025 PRESENT | GLOW PLUG CONTROL UNIT DIAGNOSTIC LINK CO: Open circuit |
INSTRUCTIONS
Special notes : Nothing to report.
| Check the condition and connection of the glow plug control unit connector. Repair if necessary. |
| Check the condition and connection of the glow plug connectors. Repair if necessary. |
| Check the condition of the 32-way ECU connector C. Repair if necessary, and replace if necessary. |
| Measure the resistance of each glow plug. Resistance must be less than 1 Ω. Replace faulty glow plugs. |
| Check the insulation, continuity and absence of parasitic resistance of the wiring: ECU connector C pin F2 → Pin 8 glow plug control unit Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF026 PRESENT OR STORED | CYLINDER 1 INJECTOR CONTROL CIRCUIT CO: Open circuit |
INSTRUCTIONS
Diagnostic application condition for stored fault: fault declared present with engine at idle.
Severity 1 warning lamp on with the message "injection fault"
CO
INSTRUCTIONS
Special notes : Nothing to report.
| Switch off ignition and wait 15 seconds. Check the condition and connection of the injector connector. Repair if necessary. |
| Check continuity between the two injector terminals using a multimeter. Replace the injector if necessary. |
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Check continuity and absence of parasitic resistance of the wiring: ECU connector B pin A4 → Pin 1 injector 1 Repair if necessary. |
CC - 1.DEF
INSTRUCTIONS
Diagnostic application condition for stored fault: fault declared present while driving.
Severity 1 and 2 warning lamps on.
| Switch off ignition and wait 15 seconds. Check the condition and connection of the injector connector. Repair if necessary. |
| Switch off ignition, disconnect injector, switch ignition back on. Replace the injector if the fault becomes stored or present as CO. |
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Disconnect ECU connector B and the injector 1 connector. Check insulation between pin A4 and pin B4 on ECU connector B. Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF027 PRESENT OR STORED | CYLINDER 2 INJECTOR CONTROL CIRCUIT CO: Open circuit |
INSTRUCTIONS
Diagnostic application condition for stored fault: fault declared present with engine at idle.
Severity 1 warning lamp on with the message "injection fault".
CO
INSTRUCTIONS
Special notes : Nothing to report.
| Switch off ignition, wait 15 seconds. Check the condition and connection of the injector connector. Repair if necessary. |
| Check continuity between the two injector terminals using a multimeter. Replace the injector if necessary. |
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Check continuity and absence of parasitic resistance of the wiring: ECU connector B pin G4 → Pin 1 injector 2 Repair if necessary. |
CC - 1.DEF
INSTRUCTIONS
Diagnostic application condition for stored fault: fault declared present while driving.
Severity 1 and 2 warning lamps on.
| Switch off ignition, wait 15 seconds. Check the condition and connection of the injector connector. Repair if necessary. |
| Switch off ignition, disconnect injector, switch ignition back on. Replace the injector if the fault becomes stored or present as CO. |
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Disconnect ECU connector B and the injector 2 connector. Check insulation between pin H4 and pin G4 on ECU connector B. Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF028 PRESENT OR STORED | CYLINDER 3 INJECTOR CONTROL CIRCUIT CO: Open circuit |
INSTRUCTIONS
Diagnostic application condition for stored fault: fault declared present with engine at idle.
Severity 1 warning lamp on with the message "injection fault".
CO
INSTRUCTIONS
Special notes : Nothing to report.
| Switch off ignition, wait 15 seconds. Check the condition and connection of the injector connector. Repair if necessary. |
| Check continuity between the two injector terminals using a multimeter. Replace the injector if necessary. |
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Check continuity and absence of parasitic resistance of the wiring: ECU connector B pin C4 → Pin 1 injector 3 Repair if necessary. |
CC - 1.DEF
INSTRUCTIONS
Diagnostic application condition for stored fault: fault declared present while driving.
Severity 1 and 2 warning lamps on.
| Switch off ignition, wait 15 seconds. Check the condition and connection of the injector connector. Repair if necessary. |
| Switch off ignition, disconnect injector, switch ignition back on. Replace the injector if the fault becomes stored or present as CO. |
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Disconnect ECU connector B and the injector 3 connector. Check insulation between pin C4 and pin D4 on ECU connector B. Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF029 STORED | CYLINDER 4 INJECTOR CONTROL CIRCUIT CO: Open circuit |
INSTRUCTIONS
Diagnostic application condition for stored fault: fault declared present with engine at idle.
Severity 1 warning lamp on with the message "injection fault"
CO
INSTRUCTIONS
Special notes : Nothing to report.
| Switch off ignition, wait 15 seconds. Check the condition and connection of the injector connector. Repair if necessary. |
| Check continuity between the two injector terminals using a multimeter. Replace the injector if necessary. |
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Check continuity and absence of parasitic resistance of the wiring: ECU connector B pin E4 → Pin 1 injector 4 Repair if necessary. |
CC - 1.DEF
INSTRUCTIONS
Diagnostic application condition for stored fault: fault declared present while driving.
Severity 1 and 2 warning lamps on.
| Switch off ignition, wait 15 seconds. Check the condition and connection of the injector connector. Repair if necessary. |
| Switch off ignition, disconnect injector, switch ignition back on. Replace the injector if the fault becomes stored or present as CO. |
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Disconnect ECU connector B and the injector 4 connector. Check insulation between pin E4 and pin F4 on ECU connector B. Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF037 PRESENT | IMMOBILISER |
INSTRUCTIONS
Special notes : Nothing to report.
Perform a multiplexed network diagnosis.Refer to the diagnosis of the "keyless vehicle" function.
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF038 PRESENT | CONTROL UNIT 1.DEF: Analogue/digital converter |
INSTRUCTIONS
Special notes : Nothing to report.
7.DEF
INSTRUCTIONS
Special notes : Nothing to report
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Check the insulation, continuity and absence of parasitic resistance of the following wiring: ECU connector B pin A4 → Pin 1 injector 1 Repair if necessary. |
| If the fault persists, contact your techline. |
4.DEF
INSTRUCTIONS
Special notes : Nothing to report.
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Check that the individual injector correction (C2I) matches the injectors; otherwise write the C2I (see "configurations/learning"). |
| If the C2I matches the injectors, contact your technical hotline. |
1.DEF 2.DEF 3.DEF 5.DEF 6.DEF 8.DEF
INSTRUCTIONS
Particularities: Contact your technical hotline.
Contact your techline.
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF039 PRESENT | INTAKE AIR TEMPERATURE SENSOR CIRCUIT CO.1: Open circuit or short circuit to +12 V |
INSTRUCTIONS
Special notes : Nothing to report.
| Check the condition of the 4-pin air temperature sensor connector. Repair if necessary. |
| Check the condition of the 48-way ECU connector B. Repair if necessary. |
| Measure the resistance between pins 1 and 2 of the air temperature sensor. Replace the air temperature sensor if the resistance is not 2051 kΩ ± 120 kΩ at 25 °C. |
| Check the insulation, continuity and absence of parasitic resistance of the following wiring: Sensor 1 connector → Pin C3 of ECU connector B Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF047 STORED | CONTROL MODULE SUPPLY VOLTAGE 1.DEF: Above maximum threshold |
INSTRUCTIONS
Condition for applying the diagnostic on a stored fault: fault reported present with engine running above 1000 rpm.
| Check the battery voltage when switching on the ignition. If battery voltage < 10 V, charge the battery. |
| Check the condition of the battery terminals and cable clamps. Repair if necessary. |
| Check the vehicle charging circuit. Repair if necessary. |
| Check the condition of the 32-way ECU connector A. Repair if necessary. |
| Check the insulation, continuity and absence of parasitic resistance of the following wiring: + APC → Pin D1 of ECU connector A Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF049 STORED | REFRIGERANT FLUID SENSOR CIRCUIT CO.1: Open circuit or short circuit to +12 V |
INSTRUCTIONS
Condition for applying the diagnostic on a stored fault: fault reported present with engine running and air conditioning on.
| Check the connection of the refrigerant pressure sensor. Repair if necessary. |
| Check the condition of the 32-way ECU connector C. Repair if necessary. |
| Check the insulation, continuity and absence of parasitic resistance of the following wiring: Sensor connector pin B → Pin C4 of ECU connector C Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF050 PRESENT OR STORED | BRAKE SWITCH CIRCUIT 1.DEF: No signal |
INSTRUCTIONS
Condition for applying the diagnostic on a stored fault: fault is reported present at ignition on or during deceleration when the brake pedal is pressed.
Treat the fault even if it is stored.
| Check the switch connector. Repair if necessary. |
| Check for +12 V on the switch power supply. Repair if necessary. |
| Check the condition of the 32-pin connector A and the 32-pin connector C of the ECU. Repair if necessary. |
| Check the operation of the switch. Repair if necessary. |
| Check the insulation, continuity and absence of parasitic resistance of the following wiring: Brake switch pin 1 and 3 → + APC Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF051 PRESENT | CRUISE CONTROL/SPEED LIMITER FUNCTION 1.DEF: Inconsistent |
INSTRUCTIONS
Special notes : Nothing to report.
| Check the condition of the 32-way ECU connector A. Repair if necessary. |
| Check the connection of the cruise control/speed limiter on/off switch. Repair if necessary. |
| Check for 12 V APC on pin A2 of the cruise control/speed limiter on/off switch. Repair if necessary. |
| Check the operation of the cruise control/speed limiter on/off switch (refer to the ET042 Cruise control/speed limiter interpretation). If the fault persists, contact your techline. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF052 PRESENT OR STORED | INJECTOR CONTROL CIRCUIT CC.1: Short circuit to +12 volts |
INSTRUCTIONS
Condition for applying the diagnostic on a stored fault: fault reported present at ignition on.
Processing priority when multiple faults are present: if DF052 and DF026, DF027, DF028 and DF029 occur together, the diagnostic procedure remains the same, but the faulty injector can be identified.
Special features: When the fault occurs, the engine stalls. Severity 1 warning light comes on with the message "faulty injection".
| Switch off the ignition and check the injector connections. Repair if necessary. |
| Disconnect the injectors and switch the ignition on. Check whether the fault persists. If the fault does not persist, one injector is faulty; switch off the ignition and reconnect one injector out of the four. Switch the ignition on: if the fault reappears, replace the reconnected injector. Proceed in the same way for the other injectors. |
| If the fault persists with the injectors disconnected. Check the condition of the 48-way ECU connector B. Repair if necessary. Check the insulation, continuity and absence of parasitic resistance of the following wiring:injector 1 pin 1 (+) → pin A4 of ECU connector B Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF053 STORED | RAIL PRESSURE REGULATION FUNCTION 1.DEF: At minimum stop |
INSTRUCTIONS
Condition for applying the diagnostic on a stored fault: fault reported present with engine running.
3.DEF - 4.DEF - 5.DEF - 6.DEF - 8.DEF
INSTRUCTIONS
Special notes : Nothing to report.
| Check the connection of the flow actuator (IMV). Repair if necessary. |
| Measure the resistance between pins 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 condition of the 48-way ECU connector B. Repair if necessary. |
| Check the insulation, continuity and absence of parasitic resistance of the wiring: ECU connector B pin M4 → pin 1 of fuel flow actuator Repair if necessary. |
Check:
Repair if necessary. |
1.DEF 2.DEF 7.DEF
INSTRUCTIONS
Condition for applying the diagnostic on a stored fault: fault reported present with engine running.
Perform Test 7 "HIGH-PRESSURE PUMP CHECK".Perform Test 10 "INJECTOR RETURN FLOW DURING STARTING PHASE".
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF057 STORED | DIESEL WATER DETECTOR CIRCUIT CO.1: Open circuit or short circuit to +12 volts |
INSTRUCTIONS
Condition for applying the diagnostic on a stored fault: fault reported present with engine running.
Severity 1 warning light comes on with the message "check the diesel filter".
| Check for water in the diesel filter; clean and replace the filter if necessary. |
| Check the condition of the 3-pin water detector connector. Repair if necessary. |
| Check the condition of the 32-way ECU connector C. Repair if necessary. |
| Check the insulation, continuity and absence of parasitic resistance of the following wiring: Sensor connector → pin 3 ground Repair if necessary. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF059 STORED | COMBUSTION MISFIRE ON CYLINDER 1 |
INSTRUCTIONS
Diagnostic application condition for stored fault: fault declared present with engine at idle.
Processing priority when multiple faults occur: if DF026 (CC or CO) and DF059 occur together, treat the cylinder 1 injector control circuit fault first: DF026 (CC or CO).
Priority when several faults are present: if faults DF053 (1.DEF, 2.DEF, 7.DEF) and DF059 are stored together, deal with the pressure regulation fault first: DF053.
| Check cylinder sealing. Repair if necessary. |
| Check the valve clearance and adjust if necessary. |
| Check the intake ducts and the EGR valve, and clean them if necessary. |
| Replace the injector. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF060 STORED | MISFIRE ON CYLINDER 2 |
INSTRUCTIONS
Diagnostic application condition for stored fault: fault declared present with engine at idle.
Priority when several faults are present: if faults DF027 (SC or OC) and DF060 are stored together, deal with the cylinder 2 injector control circuit fault first: DF027 (SC or OC).
Priority when several faults are present: if faults DF053 (1.DEF, 2.DEF, 7.DEF) and DF060 are stored together, deal with the pressure regulation fault first: DF053.
| Check cylinder sealing. Repair if necessary. |
| Check the valve clearance and adjust if necessary. |
| Check the intake ducts and the EGR valve, and clean them if necessary. |
| Replace the injector. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
| DF061 STORED | MISFIRE ON CYLINDER 3 |
INSTRUCTIONS
Diagnostic application condition for stored fault: fault declared present with engine at idle.
Priority when several faults are present: if faults DF028 (SC or OC) and DF061 are stored together, deal with the cylinder 3 injector control circuit fault first: DF028 (SC or OC).
Priority when several faults are present: if faults DF053 (1.DEF, 2.DEF, 7.DEF) and DF061 are stored together, deal with the pressure regulation fault first: DF053.
| Check cylinder sealing. Repair if necessary. |
| Check the valve clearance and adjust if necessary. |
| Check the intake ducts and the EGR valve, and clean them if necessary. |
| Replace the injector. |
AFTER REPAIR
Address any faults declared by the diagnostic tool. Clear the ECU memory.
Carry out a road test followed by a further check with the diagnostic tool.
Test yourself
A quick Renault Megane quiz: every answer comes with an explanation and a link to the manual page.