ESP RENAULT TWINGO RS 2009 2.G Electrical Equipment - Lightening Workshop Manual

80D-3
MR-413-X44-80D000$100_eng.mif
V1
LIGHTING
Fault finding - Introduction80D
Faults
Faults are declared as either present or stored (depending on whether they appeared in a certain context and have
disappeared since, or whether they remain present but have not been diagnosed within the current context).
The present or stored status of faults should be taken into consideration when the diagnostic tool is switched on
after the + after ignition feed (without any system components being active).
For a present fault, apply the procedure described in the Interpretation of faults section.
For a stored fault, note the faults displayed and apply the instructions in the Notes section.
If the fault is confirmed when the instructions in the Notes section are applied, the fault is present. Deal with the fault
If the fault is not confirmed, check:
–the electrical lines which correspond to the fault,
–the connectors on these lines (corrosion, bent pins, etc.),
–the resistance of the component detected as faulty,
–the condition of the wires (melted or split insulation, wear).
Conformity check
The aim of the conformity check is to check data that does not produce a fault on the diagnostic tool because the
data is inconsistent. Therefore, this stage is used to:
–run diagnostics on faults that do not have a fault display, and which may correspond to a customer
complaint.
–check that the system is operating correctly and that there is no risk of a fault recurring after repairs.
This section gives the fault finding procedures for statuses and parameters and the conditions for checking them.
If a status is not behaving normally or a parameter is outside the permitted tolerance values, consult the
corresponding fault finding page.
Customer complaints - Fault finding chart
If the test with the diagnostic tool is OK but the customer complaint is still present, the fault should be processed by
customer complaint.
A summary of the overall procedure to follow is provided on the following page in the
form of a flow chart.

80D-5
MR-413-X44-80D000$100_eng.mif
V1
LIGHTING
Fault finding - Introduction80D
4. FAULT FINDING PROCEDURE (CONTINUED)
Wiring check
Fault finding problems
Disconnecting the connectors and/or manipulating the wiring harness may temporarily remove the cause of a fault.
Electrical measurements of voltage, resistance and insulation are generally correct, especially if the fault is not
present when the analysis is made (stored fault).
Visual inspection
Look for damage under the bonnet and in the passenger compartment.
Carefully check the fuses, insulators and wiring harness routing.
Look for signs of oxidation.
Physical inspection
While manipulating the wiring harness, use the diagnostic tool to note any change in fault status from stored to
present.
Ensure that the connectors are properly locked.
Apply light pressure to the connectors.
Twist the wiring harness.
If there is a change in status, try to locate the source of the fault.
Inspection of each component
Disconnect the connectors and check the appearance of the clips and tabs, as well as the crimping (no crimping on
the insulating section).
Make sure that the clips and tabs are properly locked in the sockets.
Check that no clips or tabs have been dislodged during connection.
Check the clip contact pressure using an appropriate model of tab.
Resistance check
Check the continuity of entire lines, then section by section.
Look for a short circuit to earth, to + 12 V or to another wire.
If a fault is detected, repair or replace the wiring harness.

80D-19
MR-413-X44-80D000$600_eng.mif
V1
80D
LIGHTING
Fault finding - Configurations and programming
UCH LIGHTING CONFIGURATIONS
List of individual configurations available on the diagnostic tool with the associated configuration reading
Procedure for modifying a configuration
–establish dialogue with the computer corresponding to the desired configuration.
–select the "repair mode" menu,
–select the "Write configuration" menu,
–select the line which corresponds to the configuration,
–at the same time, select the line for the vehicle equipment or the customer choice,
–Click on "Confirm",
–in the "Read configuration" menu, check that the configuration has been completed. ConfigurationConfiguration
readingName of configuration Choice of configuration
CF032 LC025"See-me-home lighting" WITH/WITHOUT
CF021 LC015"Front fog lights" WITH/WITHOUT
CF014 LC008"Daytime running lights" WITH/WITHOUT
CF193 LC095"Automatic lighting function" WITH/WITHOUT
CF194 LC096"Automatic wiper function" WITH/WITHOUT
CF035 LC044"Rain/light sensor" PRESENT/ABSENT
CF024 LC018"Hazard warning lights switched on by ABS" WITH/WITHOUT
MR-413-X44-80D000$600_eng.mif