ABS RENAULT SCENIC 2008 J84 / 2.G Electrical Equipment - Multimedia Workshop Manual

86C-5
MR-372-J84-86C100$111.mif
V2
MULTIMEDIA
Fault finding - Introduction86C
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.
Tactile inspection
While manipulating the wiring harness, use the diagnostic tool to note any change in fault status from stored to
present.
Make sure 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.

86C-8
MR-372-J84-86C100$333.mif
V2
86C
MULTIMEDIA
Fault finding - Operating diagram
Layout of the main LPN* radio system components:
*LPN: Low Price NavigationCAN V M diagnostic
socketUCH
SUPPLY
(Kangoo 2)Passenger electric
mirror (Trafic II ph2)
Other computersMultimedia network
interface unit
Steering column
control
Multifunction aerial
(Trafic II ph2)
GPS aerialLPN*
radionavigation
Aerial amplifier
(Espace IV ph2,
Scénic II ph2,
Kangoo 2)Passenger
compartment fuse box
and relay
Radionavigation
display
ABS computer, ABS/
ESP or wheel speed
depending on
equipment level
Microphone
CD changer
(if optional)Speakers
Vehicle multiplex network
Multimedia multiplex network
MR-372-J84-86C100$333.mif

86C-15
MR-372-J84-86C100$777.mif
V2
MULTIMEDIA
Fault finding - Conformity check86C
SUB-FUNCTION: USER SELECTION (CONTINUED 2)
NOTESOnly carry out a conformity check after a complete check with the diagnostic tool.
The values shown in this conformity check are given as a guide.
Application conditions: Engine stopped, ignition on.
ComputerParameter, Status checked or
ActionDisplay and notes Fault finding
See 86D,
Multimedia network
interface unitET001:Activation signalACTIVE
INACTIVEIn the event of a fault, consult
ALP 2 "The multimedia
system does not switch on".
ET002:Radio on/off buttonACTIVE
INACTIVE
ET003:Timed battery
voltageACTIVE
INACTIVENONE
ET005:Silence modeACTIVE
INACTIVE
DECREASEIn the event of a fault, refer to
the interpretation of status
ET005 “Silence mode”.
ET006:User profile in
progress0/1/2/3/4NONE
ET008:Vehicle movement
directionFRONT
REAR
NEUTRALIn the event of a fault, refer to
the interpretation of status
ET008 "Vehicle movement
direction".
PR002:Battery voltage11 V < PR002 < 14 VIn the event of a fault, refer to
the interpretation of parameter
PR002 Battery voltage.
PR003:Vehicle speed0 mphIn the event of a fault, carry out
fault finding on the ABS system
(see 38C, ABS system).
PR001:Mileage last fault
appearedIn KmThe parameter PR001
"Mileage last fault appeared"
indicates the distance travelled
since the last fault appeared.