Page 8 of 204

13B-8V1 MR-376-X76-13B000$020.mif
DIESEL INJECTION
Fault finding – Cleanliness guidelines13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
II - INSTRUCTIONS TO BE FOLLOWED BEFORE CARRYING OUT ANY WORK
Ensure that you have plugs for the unions to be opened (set of plugs available from the Parts Department). Plugs
are to be used only once. They must be discarded after use (once used they are soiled and cleaning is not sufficient
to make them reusable). Unused plugs must be thrown away.
Ensure that you have hermetically resealable plastic bags for storing removed parts. Parts stored in this way will be
less susceptible to the risk of contamination. The bags are to be used once only, and discarded after use.
Use lint-free cleaning cloths (cloth part reference 77 11 211 707). The use of ordinary cloth or paper is not permitted.
They are not lint-free and could contaminate the fuel circuit. A lint-free cloth should only be used once.
Use fresh cleaning agent for each operation (used cleaning agent is contaminated). Pour it into a clean receptacle.
For each operation, use a clean brush in good condition (the brush must not shed its bristles).
Use a brush and cleaning agent to clean the unions to be opened.
Blow compressed air over the cleaned parts (tools, workbench, the parts, unions and injection system zones).
Check that no bristles are left.
Wash your hands before and during the operation if necessary.
When wearing leather protective gloves cover them with latex gloves to prevent contamination.IMPORTANT
Before carrying out any work on the high pressure injection system, protect:
– the accessories belts,
– the electrical accessories, (starter, alternator, electric power-assisted steering pump),
– the flywheel surface, to prevent any diesel from running onto the clutch friction plate.
– timing chain
Page 23 of 204

13B-23V1 MR-376-X76-13B000$060.mif
DIESEL INJECTION
Fault finding – Fault summary table13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
Tool fault Associated DTC Diagnostic tool name
DF052 0200Injector control circuit
DF053 0089Rail pressure regulation function
DF056 0100Air flow sensor circuit
DF057 2264Water in diesel fuel detector circuit
DF059 0263Misfiring on cylinder 1
DF060 0266Misfiring on cylinder 2
DF061 0269Misfiring on cylinder 3
DF062 0272Misfiring on cylinder 4
DF089 0235Inlet manifold pressure sensor circuit
DF098 0180Fuel temperature sensor circuit
DF107 062FComputer memory
DF112 0340Cylinder reference sensor circuit
DF113 0641Sensor supply voltage
DF114 0400EGR solenoid valve circuit
DF121 0325Accelerometer circuit
DF122 0651Supply voltage pedal potentiometer gang 2
DF130 0087Flow capacity function
DF159 0635Power steering relay control circuit
DF162 0655Overheating indicator light
DF195 0016Camshaft/engine speed sensor consistency
DF209 0487EGR valve position sensor circuit
DF218 0604Microcontroller
DF221 0830Clutch contact signal
DF236 106FSerious injection fault warning light circuit
Page 100 of 204

13B-100
AFTER
REPAIRDeal with any faults declared by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-13B000$072.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
DF159
PRESENT
OR
STOREDPOWER-ASSISTED STEERING RELAY CONTROL CIRCUIT
CO.0: open circuit or short-circuit to earth
CC.1: short circuit to +12 V
NOTESSpecial notes:
This fault is active if the vehicle is fitted with electric power-assisted steering.
Check the connection and condition of the connectors of the power-assisted steering pump assembly relay
mounting, component code 409 and of the injection computer, component code 120.
If the connectors are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or Technical
Note 9804A (Dacia), Electrical wiring repair, Wiring: Precautions for repair), repair the connectors, otherwise
replace the wiring.
Check the insulation, continuity and the absence of interference resistance on the following connection:
●3FK between components 409 and 120.
If the connection is faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or Technical
Note 9804A (Dacia), Electrical wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise
replace it.
Check for + after ignition feed between the following connections:
tracks 1 and 3 of the relay.
If the connection(s) are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or
Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring,
otherwise replace it.
If the fault is still present, contact the Techline.
DCM1.2_V08_DF159
Page 146 of 204

13B-146V1 MR-376-X76-13B000$130.mif
DIESEL INJECTION
Fault finding – Command summary table13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
Tool
commandDiagnostic tool title Comments
AC029 High pressure circuit sealing testActivating this will request the injection system to detect a
leak on the high pressure circuit after a procedure has been
carried out. This is activated with the engine warm and
running and consists of unladen acceleration repeated 4
times.
AC056 Power-assisted steering
assembly relayActivating this actuates the power assisted steering pump.
AC060 Preheating warning lightActivating this actuates the preheating warning light on the
instrument panel.
AC061 Overheating warning light.Activating this actuates the engine overheating warning light
on the instrument panel.
AC068Injection fault warning light.Activating this actuates the injection fault warning light on
the instrument panel.
AC099Deactivation of electrical
consumersThis activation only deactivates the preheating function.
AC100End deactivation of electrical
consumersActivating this enables preheating to be authorised after the
injection computer has been programmed or reprogrammed
(see Replacement of components).
AC153 High-speed fan assemblyActivating this actuates the high speed fan relay to test the
supply to the high speed fan.
AC154 Fan low speed.Activating this actuates the low speed fan relay to test the
supply to the low speed fan.
AC155MIL warning lightThis activation controls the malfunction indicator light on the
instrument panel (emission control/EOBD warning light).
AC180 Air conditioning compressor
relay control.Activating this enables you to listen to the operation of the
air conditioning compressor.
AC212 New pump chamber fillingThis must only be activated after the high pressure pump
has been replaced (see Replacement of components).
This command is used to activate the pump repriming
sequence.
AC250 Heating resistor 1 relay.Activating this controls the heating resistor no. 1 relay to test
the heating resistor supply.