check engine light RENAULT SCENIC 2008 J84 / 2.G Electrical Equipment - Multimedia Workshop Manual

86C-3
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Fault finding - Introduction86C
Procedure (continued)
Espace IV ph2: To save energy, the UCH on the Espace IV Phase 2 cuts out the + after ignition feed after 3 minutes.
To run fault finding on a computer, it is possible to force the + after ignition feed on for 1 hour by applying the following
procedure:
–Press the card unlocking button.
–Insert the card into the reader.
–Press the Start button (interrupting the timed + after ignition feed mode).
–Press and hold the Start button for over 5 seconds until the engine immobiliser warning light starts to flash
rapidly (4 Hz).
This forced + after ignition feed mode remains on for 1 hour.
Pressing the Start button or removing the card from the reader cuts off the forced + after ignition feed but does not cut off
the timed forced + after ignition feed mode. As long as one hour has not elapsed the + after ignition feed function restarts
the forced + after ignition feed for the remaining time.
Trafic II ph2 and Kangoo 2:
To run fault finding on the vehicle computers, switch on the forced + after ignition feed.
Faults
Faults are displayed as present or stored (they appeared in a certain context and have since disappeared, or they are still
present but cannot be diagnosed in the current context).
The present or stored status of faults should be taken into consideration when the diagnostic tool is used following the +
after ignition supply being switched on (without operating the system components).
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 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 repair.
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.
A summary of the overall procedure to follow is provided on the following page in the form
of a flow chart

86C-12
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86C
MULTIMEDIA
Fault finding - Conformity check
MAIN COMPUTER STATUSES AND PARAMETERS
*: degrees per second
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 86A, RadioPR010:Vehicle
speedUnit: km/hIn the event of a fault, consult the
interpretation of parameter PR010
Vehicle speed.
PR008:Number of
satellites
receivedIn an open area, the
number of satellites
received should be
greater than 3 for the
system to operate
correctly.In the event of a fault, consult the
interpretation of parameter PR008
Number of satellites received.
PR009:Angular
positionUnit: ˚/s *
This parameter
determines the angular
speed when corneringIn the event of a fault, consult the
interpretation of parameter PR009
Angular position.
See 86D,
Multimedia network
interface unitET004:+ 12 V side
lightsINACTIVE
SIGNAL
OFF
ONIn the event of a fault, perform
fault finding on the UCH (see 87B,
Passenger compartment
connection unit).
MR-372-J84-86C100$777.mif

86C-19
MR-372-J84-86C100$777.mif
V2
MULTIMEDIA
Fault finding - Conformity check86C
SUB-FUNCTION: DISPLAY
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 unitPR005:Dimmed lightingUse the backlighting
wheel to vary the
parameter value.
Lights on:
from 0 to 100 %
Lights off: 102 %In the event of a fault, refer to
ALP 6 "No LPN
radionavigation
backlighting".
ET004:+ 12 V side lightsINACTIVE
SIGNAL
OFF
ON
ET007:BrightnessDAY: Lights off
NIGHT: Lights on