light RENAULT TWINGO 2009 2.G Electrical Equipment - Radio R01-08 Workshop Manual

86A-3V2 MR-413-X44-86A100$010.mif
RADIO
Fault finding – Introduction86A
R01-08
Vdiag No.: A4
To cut off the + after ignition feed, proceed as follows:
Faults
Faults are declared 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 the faults should be taken into consideration when the diagnostic tool is used after
the + after ignition feed has been activated (without any of the system components being activated).
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 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 faulty component,
–the condition of the wires (melted or cut insulation, wear). For vehicles with radio frequency remote control/key, use the key to switch off the ignition.
For vehicles with Renault cards,
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 warning lights on the
instrument panel have gone out.

86A-6V2 MR-413-X44-86A100$010.mif
RADIO
Fault finding – Introduction86A
R01-08
Vdiag No.: A4
4. FAULT FINDING PROCEDURE (continued)
4.1 Wiring check
Fault finding problems
Disconnecting the connectors and/or manipulating the wiring may temporarily clear 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
When handling the wiring, use the diagnostic tool to detect any change in the status of the faults from "stored" to
"present".
Make sure that the connectors are firmly secured.
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.
Checking earth insulation
This check is carried out by measuring the voltage (multimeter in voltmeter mode) between the suspect connection
and the 12 V or 5 V. The correct measured value is 0 V.
Checking insulation against + 12 V or + 5 V
This check is carried out by measuring the voltage (multimeter in voltmeter mode) between the suspect connection
and the earth. In the first instance, the earth may be taken on the chassis. The correct measured value should be 0 V
Continuity check
A continuity check is carried out by measuring the resistance (multimeter in ohmmeter mode), with the connectors
disconnected at both ends. The expected result must be between: 0 Ω < X < 2 Ω for every connection. The line must
be fully checked, and the intermediate connections are only included in the method if this saves time during the fault
finding procedure. The continuity check on the multiplex lines must be carried out on both wires. The measured
value must be between: 0 Ω < X < 2 Ω.
Checking the supply
This check may be carried out using a test light (21 W or 5 W depending on the maximum authorised load)

86A-20V2 MR-413-X44-86A100$030.mif
86A
R01-08
Vdiag No.: A4
Role of main components
The radio computer manages the various multimedia system functions according to user requests and transmits
audio data to the vehicle via the speakers.
The radio uses an amplified aerial system to improve radio reception.
The aerial amplifier is incorporated into the roof aerial.
The speakers reproduce the radio system's sound inside the vehicle.
The microphone allows the telephone to be used in hands-free mode via a Bluetooth connection.
The tweeters reproduce the high-frequency sounds of the radio system.
The multimedia interface unit (Display or Multimedia connection unit) receives various signals from the vehicle CAN
(speed, status of exterior lights) and retransmits them for the radio via the Multimedia CAN.
The multimedia interface unit (Display or Multimedia connection unit) transmits the activation signal to the radio and
to the other computers that participate in the multimedia function when the user activates the radio button.
The display shows various multimedia information such as the radio information, the time, etc.
The radio control satellite allows various functions of the radio to be accessed.
RADIO
Fault finding – Role of components

86A-59V2 MR-413-X44-86A100$180.mif
86A
R01-08
Vdiag No.: A4
NOTESOnly refer to the customer complaints after performing a complete check using
the diagnostic tool.
NO DIALOGUE WITH THE COMPUTER ALP1
THE RADIO BEEPS EVERY 2 SECONDS ALP2
THE RADIO DOES NOT OPERATE WHEN THE ON BUTTON IS PRESSED ALP3
RADIO IS SWITCHED ON, BUT THE DISPLAY DOES NOT WORK ALP4
THE RADIO CONTROL SATELLITE DOES NOT OPERATE OR OPERATES POORLY ALP5
RADIO RECEPTION FAULT ALP6
THE VOLUME DOES NOT INCREASE WITH THE VEHICLE SPEED. ALP7
BACKLIGHTING DOES NOT CHANGE WHEN THE VEHICLE LIGHTS
ARE SWITCHED ONALP8
THE RADIO DOES NOT PLAY THE CD IN ORDER OR SKIPS SONGS ALP9
SOUND FAULT FOR A SPEAKER OR TWEETER (REGARDLESS OF SOURCE) ALP10
THE RADIO AND/OR THE DISPLAY REMAINS LIT FOR 1 MINUTE AFTER LOCKING THE
VEHICLE (ON NEW TWINGO ONLY)ALP11
THE CD DOES NOT EJECT ALP12
A RADIO BUTTON(S) NO LONGER OPERATES OR FUNCTIONS POORLY ALP 13
POOR SOUND (REGARDLESS OF THE SOURCE) ALP14
FAULT WHEN USING THE MOBILE CONNECTIVITY TERMINAL ALP15
RADIO
Fault finding – Customer complaints

86A-72
AFTER REPAIRCarry out another fault finding check on the system.
Deal with any faults.
V2 MR-413-X44-86A100$190.mif
RADIO
Fault finding – Fault Finding Chart86A
R01-08
Vdiag No.: A4
ALP 3 The radio does not operate when the ON button is pressed
NOTESNone.
Press the ON button of the radio.
Switch on the lights
Does the radio backlighting operate?See ALP1 No dialogue with the computer.
Is the volume 0 or on pause?Increase the volume or restart play.
Is the front/rear balance set completely to
the rear speakers?Set the front/rear balance to 0.
Are the condition and connections of the
speaker connector and speaker connections
in order?Reconnect or repair the connector(s), otherwise
replace the wiring. (see Technical Note 6015A,
Repairing electrical wiring, Wiring:
Precautions for repair).
See ALP 10 Sound fault for a speaker or
tweeter.
NO
YES
YES
NO
YES
NO
NO
YES
R108_VA4_ALP3

86A-80
AFTER REPAIRCarry out another fault finding check on the system.
Deal with any faults.
V2 MR-413-X44-86A100$190.mif
RADIO
Fault finding – Fault Finding Chart86A
R01-08
Vdiag No.: A4
ALP 8Backlighting does not change when the vehicle lights are
switched on
NOTESUse the Wiring Diagrams Technical Note for Clio III or New Twingo.
NOTE: Switch on the side lights and position the lighting rheostat wheel in the centre
position.
The display, component code 653, is only available when the vehicle does not have
the navigation function.
The multimedia connection unit, component code 1714, is only available when the
vehicle has the navigation function.
Check the backlighting of the following components:
radio, display and instrument panel.
Are all of the components backlit?
Attempt to backlight these components
once again, and if no conclusion can be
made, contact the Techline.
Does the instrument panel light up?Perform fault finding on the instrument
panel (see 83A, Instrument panel).
YES
NO
NO
YES
A
R108_VA4_ALP8

86A-81
AFTER REPAIRCarry out another fault finding check on the system.
Deal with any faults.
V2 MR-413-X44-86A100$190.mif
RADIO
Fault finding – Fault Finding Chart86A
R01-08
Vdiag No.: A4
ALP 8
CONTINUED
Does the display backlighting operate? Replace the display, component code 653
(see MR 392 (Clio III) or MR 411 (New
Twingo) Mechanical, 86A, Radio,
Display: Removal – Refitting) or the
multimedia connection unit, component
code 1714 (see MR 392 Mechanical,
83C, On-board telematics system,
Multimedia network interface unit:
Removal - Refitting).
Does the radio backlighting operate? Replace the radio, component code 261
(see MR 392 (Clio III) or MR 411
(New Twingo) Mechanical, 86A, Radio,
Radio: Removal - Refitting).
Contact the Techline.
A
YES
NO
YES
NO
YES