13B-148
DIESEL INJECTION
Fault finding - Interpretation of statuses13B
V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4CDIESEL INJECTION
Fault finding - Interpretation of statuses
ET001
COMPUTER + AFTER IGNITION FEED
NOTESOnly perform the tests if the statuses do not correspond with the system programming
functions.
ABSENT ignition on
Check the condition and conformity of the F5D (5A) supply fuse for the UPC.
Repair if necessary.
Check for the presence of an earth on the following connections:
Injection computer black 32-track connector A, track G4 battery earth
Injection computer black 32-track connector A, track H4 battery earth
Injection computer black 32-track connector A, track H1 battery earth
Repair if necessary.
Check for + 12 V on trackD1 of connector A of the injection computer.
If there is no voltage, check the continuity and insulation against earth of the following
connection:
Injection computer black 32-track connector A, track D1 Track 1 UPC black
connector
Repair if necessary.
PRESENT ignition on
Check that there is not + 12 V with the ignition switched on trackD1 of connector A of
the injection computer.
Repair if necessary.
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
EDC16_V44_ET001/EDC16_V48_ET001/EDC16_V4C_ET001
MR-372-J84-13B150$564.mif
13B-152
DIESEL INJECTION
Fault finding - Interpretation of statuses13B
V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
ET014
FAN ASSEMBLY 1 CHECK
NOTESOnly perform the tests if the statuses do not correspond with the system programming
functions.
Note: Status ET022 Low-speed engine fan request and status ET014 Engine fan assembly check 1 change
their status at the same time.
RUNNING
The low-speed fan assembly is supplied in three scenarios:
– the engine coolant temperature is above 89°C,
– the air conditioning is operating,
– the injection computer has system faults that could lead to the engine overheating.
When the low-speed fan assembly is supplied:
– status ET014 changes to RUNNING
– status ET022 low-speed engine fan request changes to ACTIVE.
In the event that the low-speed engine fan does not work, refer to the UPC fault finding note.
STOPPED
The low-speed fan assembly stops when:
– the engine coolant temperature is below 89°C,
– no air conditioning request made by the driver.
IMPORTANT!WARNING
If the UPC does not detect the injection computer frames, the low-speed engine
fan assembly is supplied until the battery is completely discharged.
In the event that the low-speed engine fan assembly is defective, the high-speed
engine fan assembly will then be activated.
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
EDC16_V44_ET014/EDC16_V48_ET014/EDC16_V4C_ET014
13B-153
DIESEL INJECTION
Fault finding - Interpretation of statuses13B
V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
ET015
FAN ASSEMBLY 2 CHECK
NOTESOnly perform the tests if the statuses do not correspond with the system programming
functions.
Note: Status ET015 Engine fan assembly 2 and status ET021 High-speed engine fan request change their
status at the same time.
RUNNING
The engine fan assembly can be supplied when:
– the engine coolant temperature is above 99°C.
– the injection computer has system faults that could lead to the engine overheating.
When the high speed fan is supplied:
– status ET015 changes to RUNNING
– status ET021 low-speed engine fan request changes to ACTIVE.
In the event that the high-speed engine fan does not work, refer to the UPC fault finding note.
STOPPED
The high-speed fan assembly stops when:
– the engine coolant temperature is below 99°C;
IMPORTANT!WARNING
If the UPC does not detect the injection computer frames, the low speed engine
fan is supplied until the battery is completely discharged.
In the event that the low-speed engine fan assembly is defective, the high-speed
engine fan assembly will then be activated.
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
EDC16_V44_ET015/EDC16_V48_ET015/EDC16_V4C_ET015
13B-154
DIESEL INJECTION
Fault finding - Interpretation of statuses13B
V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
ET021
HIGH-SPEED FAN REQUEST
NOTESOnly perform the tests if the statuses do not correspond with the system programming
functions.
Note: Status ET021 High-speed engine fan assembly request and status ET015 High-speed engine fan 2
test change their status at the same time.
ACTIVE
The injection computer requests the activation of the high speed GMV when:
– the engine coolant temperature is above 99°C.
– the injection computer has system faults that could lead to the engine overheating.
When the high speed fan is supplied:
– status ET021 High-speed engine fan request changes to ACTIVE.
– status ET015 changes to RUNNING
In the event that the high-speed engine fan does not work, refer to the UPC fault finding note.
STOPPED
The high-speed fan assembly stops when:
– the engine coolant temperature is below 99°C;
– no fault which could cause engine overheating is present in the injection system.
IMPORTANT!WARNING
If the UPC does not detect the injection computer frames, the low speed engine
fan is supplied until the battery is completely discharged.
In the event that the low-speed engine fan assembly is defective, the high-speed
engine fan assembly will then be activated.
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
EDC16_V44_ET021/EDC16_V48_ET021/EDC16_V4C_ET021
13B-155
DIESEL INJECTION
Fault finding - Interpretation of statuses13B
V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
Note: Status ET022 Low-speed engine fan request and status ET014 Engine fan assembly check 1 change
their status at the same time.ET022
LOW-SPEED FAN REQUEST
NOTESOnly perform the tests if the statuses do not correspond with the system programming
functions.
ACTIVE
The injection computer requests the activation of the low speed GMV when:
– the engine coolant temperature is above 89°C,
– the injection computer has system faults that could lead to the engine overheating,
– the air conditioning is switched on by the driver.
When the high speed fan is supplied:
– status ET022 High-speed engine fan request changes to ACTIVE,
– status ET014 changes to RUNNING.
In the event that the low-speed engine fan does not work, refer to the UPC fault finding note.
STOPPED
The low-speed fan assembly stops when:
– the engine coolant temperature is below 89°C,
– no fault which could cause engine overheating is present in the injection system.
– the air conditioning is not switched on by the driver.
IMPORTANT!WARNING
If the UPC does not detect the injection computer frames, the low speed engine
fan is supplied until the battery is completely discharged.
In the event that the low-speed engine fan assembly is defective, the high-speed
engine fan assembly will then be activated.
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
EDC16_V44_ET022/EDC16_V48_ET022/EDC16_V4C_ET022
13B - 194
DIESEL INJECTION
Fault finding - Interpretation of commands13B
V10 MR-372-J84-13B150$752.mif
EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4C
AC001
PREHEATING UNIT
NOTESThis command is only carried out if fault DF025 Preheating unit fault finding
connection or DF081 Preheating relay circuit is present or stored and if no other
fault is present.
Refer to the Wiring diagrams Technical Note for the vehicle to locate the fuses and
relays concerned.
Connect the diagnostic tool and turn on the ignition.
With the preheating unit connected:
– connect the negative terminal of the voltmeter to track 8 of the preheating unit,
– connect the positive terminal of the voltmeter to the + 12 V battery,
– run command AC001 Preheating unit.
if the voltmeter does not indicate the battery voltage while the command is running (ten one-second ON/OFF
cycles), contact the Techline:
1. Check the condition of theF01 (70A) fuse which supplies the preheating unit. Replace it if necessary.
2. Check the continuity and the absence of interference resistance on the following connections:
Injection computer connector C, track E2 Track 8 of the preheating unit connector
Injection computer connector C, track A4 Track 9 of the pre-postheating unit connector
Repair if necessary.
3. Check the connections on the preheating unit, heater plugs and injection computer.
Repair if necessary.
4 Measure the resistance of the heater plugs. If the resistance is greater than 2Ω replace the faulty plug(s).
5. Check the continuity and the absence of interference resistance between:
– preheating unit track 1Heater plug for cylinder 3
– preheating unit track 2Heater plug for cylinder 4
– preheating unit track 6Heater plug for cylinder 1
– preheating unit track 7Heater plug for cylinder 2
6. Then check for +12V on track 3 of the preheating relay connector.
If the fault is still present, replace the preheating unit.
AFTER REPAIRRestart the conformity check from the beginning.
EDC16_V44_AC001/EDC16_V48_AC001/EDC16_V4C_AC001
13B - 196
DIESEL INJECTION
Fault finding - Interpretation of commands13B
V10 MR-372-J84-13B150$752.mif
EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4C
AC002
CONTINUED
Step 2: Check the computer output
using a voltmeter:
– Leave the EGR valve connected.
– Connect a "wire clip" to the violet wire between the valve and the injection computer (connection between track 6
of the valve and track J2 of the injection computer connector B).
– Connect the positive terminal of voltmeter to the wire clip.
– Connect the negative terminal of the voltmeter to the battery earth.
– Run command AC002 EGR solenoid valve.
– The voltage should vary over 10 cycles between 1.05 V and 3.5 V.
– If the voltage varies between these values, replace the EGR valve.
– If the voltage does not vary or varies between incorrect values, contact the Techline.
AFTER REPAIRRestart the conformity check from the beginning.
13B - 198
DIESEL INJECTION
Fault finding - Interpretation of commands13B
V10 MR-372-J84-13B150$752.mif
EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4C
* Opening Cyclic Ratio. AC004
CONTINUED
Turbocharger control circuit check (continued)
4) Turbocharging operation check:
a) Connect vacuum pump to the hoses connected to the turbocharger control diaphragm,
– Apply a vacuum pressure of 800 mbar:
If there is a leak, replace the turbocharger (diaphragm included).
b) Check the movement of the control rod (See MR 364, 12B, Mechanical, Turbocharging).
If the control rod is sticking, replace the turbocharger.
c) Engine cold and switched off:
– Remove the turbocharger inlet duct and check that the compressor turns freely on the axis.
d) If the fault is still present:
– Check that the exhaust manifold is not leaking.
– Check that the exhaust is not blocked.
Carry out the necessary repairs.
5) Computer output check (solenoid valve connected):
This operation can only be carried out if the checks indicated in step no. 2 are not conclusive.
Using a voltmeter:
– Connect the voltmeter earth to track 2 of the solenoid valve and the positive cable to track 1.
– Clear any solenoid valve fault then run command AC004:
The voltmeter should display ten cycles of two successive voltages ~ =battery voltage X OCR* current.
either: ~2.5V (OCR for 20 %) then ~8.7V (OCR for 70 %).
Or using an oscilloscope (range 5 V/division and with time base 1 ms/division):
– Connect the earth of the oscilloscope to the battery earth and the positive test pin to track 2 of the solenoid valve.
– Clear any solenoid valve faults, then run command AC004:
the oscilloscope should display a square wave signal of 12.5 V in amplitude at a frequency of 140 Hz
(with an OCR alternating 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 REPAIRRestart the conformity check from the beginning.