light RENAULT SCENIC 2008 J84 / 2.G LPN Radio Workshop Manual
[x] Cancel search | Manufacturer: RENAULT, Model Year: 2008, Model line: SCENIC, Model: RENAULT SCENIC 2008 J84 / 2.GPages: 93, PDF Size: 0.25 MB
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Fault finding - Introduction
1. SCOPE OF THIS DOCUMENT
This document presents the fault finding procedure applicable to all computers with the following specifications:
2. PREREQUISITES FOR FAULT FINDING
Documentation type
Fault finding procedure (this manual):
–Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring Diagrams:
–Visu-Schéma (CD-ROM), paper.
Type of diagnostic tools
–CLIP + multiplex line sensor
Special tooling required
3. REMINDERS
Procedure
Scénic II ph2:
To run fault finding on the vehicle computers, switch on the forced + after ignition feed.
Proceed as follows:
*LPN: Low Price NavigationVehicle(s): Espace IV phase 2, Scénic II phase 2,
Trafic II phase 2, Kangoo 2
Function concerned: Radio, satellite navigationName of computer: LPN* radio navigation
VDIAG NO: C4
Special tooling required
Multimeter
Elé. 1681 Universal bornier
Switch on the forced + after ignition feed:
–with the vehicle card in the card reader,
–press and hold the Start button (longer than 5 seconds) with start-up conditions not fulfilled,
–connect the diagnostic tool and perform the required operations.
Switching off the forced + after ignition feed:
Press the Start button twice briefly (less than 3 seconds).
See that the + after ignition feed has been cut off by checking that the computer warning lights on the instrument
panel have gone out.
LPN_VC4_PRELI
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Vdiag No: C4
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Fault finding - Introduction86A
Procedure (continued)
Espace IV ph2:
In order to save energy, the Espace IV Phase 2 UCH cuts off 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 card 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 active 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 passed, 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 method described in the section on Interpretation of faults.
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 defective,
–the condition of the wires (melted or split insulation, wear).
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Fault finding - Introduction86A
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.
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Fault finding - Customer complaints
LPN RADIO
Vdiag No: C4
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*LPN: Low Price NavigationFRONT PANEL BUTTON FAULT ALP 12
NO NAVIGATION VOICE MESSAGES ALP 13
THE VOLUME DOES NOT INCREASE WITH THE VEHICLE
SPEEDALP 14
NO TRAFFIC INFORMATION MESSAGE ON THE SCREEN ALP 15
THE SCREEN DISPLAY STAYS FROZEN ALP 16
THE SCREEN DISPLAYS "CONNECT A DIAGNOSTIC TOOL" ALP 17
IMPOSSIBLE TO USE TELEPHONE WITH BLUETOOTH ALP 18
THE PERSON I AM CALLING USING THE COMMUNICATION
SYSTEM CANNOT HEAR ME WELL OR CANNOT HEAR ME
AT ALL (IN BLUETOOTH MODE) ALP 19
THE TELEPHONE CONVERSATION VOLUME LEVEL IS LOW ALP 20
DISTANCES ARE NOT SHOWN IN THE CORRECT UNITS ALP 21
NO LPN* RADIO NAVIGATION BACKLIGHTING ALP 22
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Fault finding - Fault Finding Chart
LPN RADIO
Vdiag No.: C4
86A
*LPN: Low Price Navigation
ALP 22 No LPN* radio navigation backlighting
NOTESSwitch on the + after ignition feed to enter fault finding mode with the computer.
Ensure there are no present or stored faults.
Use the wiring diagrams Technical Note for Scénic II ph2, Espace IV ph2,
Trafic II ph2 or Kangoo 2.
Run fault finding on the multimedia network interface unit (see 86D, Multimedia network interface unit).
AFTER REPAIRCarry out a complete check with the diagnostic tool.
LPN_VC4_ALP22