MULTIMEDIA
Fault finding - Introduction
86C
86C-2
NAV 4R
Program no.: 0000
Vdiag No.: 24
To cut off the + after ignition feed, proceed as follows:
Faults
Faults are declared present or stored (depending on whether they appeared in a certain context and have
disappeared since, or whether they remain present but are not 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:
–carry out fault finding 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 complaints. For vehicles with key/radiofrequency remote control, use the key to switch off the ignition.
For vehicles with a Renault card,
press the Start button twice briefly (less than 3 seconds),
Ensure that the + after ignition feed has been cut off by checking that the computer indicator lights on the
instrument panel have gone out.
A synopsis of the general procedure to follow is provided on the following page in the
form of a flow chart.
MULTIMEDIA
Diagnostic - Fault finding chart86C
86C-81
NAV 4R
Program no.: 0000
Vdiag No.: 24
ALP 14 Front panel button fault
NOTESOnly check the customer complaint after performing a full check with the diagnostic
tool.
Use the Wiring Diagram Technical Note for the vehicle concerned.
Check for + 12 V on connection SP2 and earth on connection MT (Laguna and Trafic), MAO (Mégane and
Scénic) or NL (Master) of component 261 (Trafic: 662).
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check that statuses ET026 Radio On/Off button, ET014 Source button, ET027 CD eject button, ET028 Tone
button, ET029 Voice synthesiser button, ET030 Station preselection button, ET032 Navigation button,
ET033 Directional button, ET034 Mode button, ET036 MUTE button, ET038 Front panel rotary button and
ET039 Front panel rotary button press are consistent during use (see Conformity check).
Do all the front panel buttons operate correctly?
No Yes
Check that no buttons are jammed.
If a button remains jammed, contact the Techline.
End of fault finding.
If the fault recurs, contact Techline.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
NAV4R_V24_ALP14
