ABS RENAULT TWINGO 2009 2.G Electrical Equipment - Access Safety Workshop Manual

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Fault finding - Introduction82D
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 - Conformity check
SUB-FUNCTION: ACCESS
SR.*: Sunroof
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
Computer Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
UCH (see 87B,
Passenger
compartment
connection unit)1
TailgateET061:Open tailgate
requestPRESENT
ABSENTIn the event of a fault,
apply the
interpretation of
status ET061
(see 87B, UCH).
2ET463:Door(s) or
tailgateOPEN
CLOSEDIn the event of a fault,
apply the
interpretation of
status ET463
(see 87B, UCH).
3
Locking/unlocking
buttonET186:Short press on
door closing
buttonSignal can be
interpreted if the
ignition is
switched off (key
removed from the
ignition switch).
ACTIVE
INACTIVEIn the event of a fault,
refer to the
interpretation of
status ET186
(see 87B, UCH).
4ET189:Long press on
door opening
buttonSignal can be
interpreted if the
ignition is
switched off (key
removed from the
ignition switch).
ACTIVE
INACTIVEIn the event of a fault,
refer to the
interpretation of
status ET189
(see 87B, UCH).
5Electric central
locking buttonET044:Central
Locking buttonPRESSED
RELEASEDIn the event of a fault,
refer to the
interpretation of
status ET044
(see 87B, UCH).
6One-touch window/
SR*ET087:One-touch
window/SR*
authorisationPRESENT
ABSENTIn the event of a fault,
apply the
interpretation of
status ET087
(see 87B, UCH).
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Fault finding - Conformity check82D
SUB-FUNCTION: PROTECTION (CONTINUED 1)
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
Computer Order FunctionParameter or Status
checked or ActionDisplay and
NotesFault finding
UCH (see 87B,
Passenger
compartment
connection unit)5
KeyET045:Radiofrequency
signal receivedYES = When the
UCH receives a
radiofrequency
signal.
NO = When the
UCH does not
receive a
Radiofrequency
signal.In the event of a fault,
refer to the
interpretation of
status ET045
(see 87B, Passenger
compartment
connection unit).
6ET193:Radiofrequency
signal from a key
allocated to the
vehiclePRESENT =
Reception of a
radiofrequency
signal from a key
allocated to the
vehicle.
ABSENT = No
reception of
frequency signal or
reception of
frequency signal
from a key not
allocated to the
vehicle.In the event of a fault,
refer to the
interpretation of
status ET193
(see 87B, Passenger
compartment
connection unit).
7ET240:Key frequency
(in MHz)433
NONEIf "NONE", check that
there is a
radiofrequency key by
trying with another key
(see 87B, Passenger
compartment
connection unit).
8PR056:Number of keys
allocatedX key(s)In the event of a fault,
refer to the
interpretation of
PR056 (see 87B,
Passenger
compartment
connection unit).

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Fault finding - Conformity check82D
SUB-FUNCTION: PROTECTION (CONTINUED 3)
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
Computer Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
Diesel
Injection
(see 13B,
Diesel
Injection)1Computer + after
ignition feedET001:Computer +
after ignition
feedPRESENT
Indicates + after ignition
computer feed.
PRESENT/ABSENTIn the event of a fault,
use the interpretation
of faults DF047
"Computer feed
voltage" and DF015
"Main relay control
circuit ".
2Engine
immobiliserET003:Engine
immobiliser INACTIVE
- INACTIVE: The
injection computer has
recognised the
immobiliser code
transmitted by the UCH.
- ACTIVE: The injection
computer has not
recognised the
immobiliser code
transmitted by the UCH.If ACTIVE, use the
"help" for ET003 on
the tool.
3Code
programmedET006:Code
programmedYES
States whether the
immobiliser code has
been programmed by the
computer or not.
YES: Code programmed
NO: Code not
programmed into the
injection computerIf NO, test the
multiplex network.
4StartingET076:StartingAUTHORISED
Indicates whether or not
starting has been
authorised by the
injection
AUTHORISED: injection
authorises starting.
PROHIBITED: Injection
does not authorise
startingIf PROHIBITED,
carry out a complete
fault finding
procedure on the
preheating system.

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Fault finding - Conformity check82D
SUB-FUNCTION: PROTECTION (CONTINUED 4)
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
Computer Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
Petrol
Injection
(see 17B,
Petrol
Injection)1Computer +
after ignition
feedET001:Computer +
after ignition
feedPRESENT
Indicates + after
ignition computer feed.
PRESENT/ABSENTIn the event of a
fault, use the
interpretation of
faults DF047
"Computer feed
voltage" and
DF015 "Main relay
control circuit".
2Engine
immobiliserET003:Engine
immobiliser INACTIVE
- INACTIVE: The
injection computer has
recognised the
immobiliser code
transmitted by the UCH.
- ACTIVE: The injection
computer has not
recognised the
immobiliser code
transmitted by the UCH.If ACTIVE, use "the
help" for ET003 on
the tool.
3Code
programmedET341:Immobiliser
code
programmedYES
States whether the
immobiliser code has
been programmed by
the computer or not.
YES: Code programmed
NO: Code not
programmed into the
injection computerIn the event of a
fault, refer to the
interpretation of
status ET341
"Immobiliser code
programmed".
4StartingET076:StartingAUTHORISED
Indicates whether or not
starting has been
authorised by the
injection
AUTHORISED: injection
authorises starting.
PROHIBITED: Injection
does not authorise
startingIf PROHIBITED,
carry out a complete
fault finding
procedure on the
preheating system.

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Fault finding - Fault Finding Chart82D
Vehicle which is not equipped with deadlocking function:
ALP 21
CONTINUED 1
Check the following conformity:
CF192 Central door locking with LC093 Central door locking.
Check that fuses F14 (20 A) are sound and correctly fitted in the passenger compartment fuse and relay box
(for vehicles equipped with deadlocking function).
Replace the fuse if necessary.
Check the condition and connection of the PE1, PE2 and PE3 connectors of the UCH (tabs bent, broken,
oxidised etc.).
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 the condition and connection of the electric central door locking connectors for the driver's and passenger's
doors and the tailgate (tabs bent, oxidised, bent etc.).
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.
Lock component 1391 to check the status of the signal on the following connections using an oscilloscope
(refer to test 1 "Central door locking" (See 87B, Passenger compartment connection unit, test 1)).
Tailgate locks:
Oscilloscope red test pin on
connection 20S of component 1322Oscilloscope black test pin on connection MHY of
component 1322
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
AFTER REPAIRCarry out a complete check with the diagnostic tool.

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Fault finding - Fault Finding Chart82D
ALP 21
CONTINUED 2
Checking the tailgate electric central locking function:
Check the insulation, continuity and the absence of interference resistance on the following connections:
Tailgate lock:
●Connection code 20S between components 1322 or 645.
●Connection code 86H between components 1322 or 645.
●Connection code MYH between component 1322 and earth MYH.
For manual gearbox:
●Connection code 86H between components 1322.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the feeds and the tailgate electric central locking connections are correct, check the tailgate switch, the tailgate
locking switch (with Neman) and the central door locking/warning switch.
Check the insulation, continuity and the absence of interference resistance on the following connections:
Checking the tailgate switch and the tailgate locking switch (with Neman):
●Connection code 20WB between components 560 and 1733.
●Connection code MYH between component 560 and earth MYH.
●Connection code 20G between components 1733 and 645.
Check the central door locking/warning switch:
●Connection code 20AW between components 645 and 1391.
●Connection code 20M between components 645 and 1391.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the connections are correct, replace the component concerned (tailgate switch, tailgate locking switch or central
door locking/warning switch.
If the fault is still present, contact Techline.
AFTER REPAIRCarry out a complete check with the diagnostic tool.

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Fault finding - Fault Finding Chart82D
ALP 23
CONTINUED
Check with parameter "PR008 Vehicle speed" that
the speed signal is reaching the UCH.
Is the speed signal correct?
YES
Run fault finding on the Airbag (see 88C, Airbag
and pretensioners).
If the fault is still present, contact Techline.NOCarry out fault finding on the ABS
(see 38C, Anti-lock braking system).
AFTER REPAIRCarry out another fault finding check on the system.

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Fault finding - Fault Finding Chart82D
ALP 25
CONTINUED 2
Carry out complete fault finding of the injection system (see 13B, Diesel injection and see also 17B, Petrol
injection) (See MR 411 Mechanical systems, 13A, Fuel supply) (see MR 411 Mechanical systems, 13C,
Preheating) (See MR 411 Mechanical systems, Ignition).
If the fault is still present, contact Techline.
Check that there are no powerful electromagnetic wave sources (CB (Citizen Band), mobile phone in close
proximity to the transponder ring).
Switch the ignition off and then on again.
Check that fuse F8 (15 A) is sound and fitted in the passenger compartment fuse and relay box.
Replace the fuse if necessary.
Check the condition and connection of the transponder ring 4-track connector (bent, oxidised, broken tabs).
Repair if necessary.
Check that the earth on connection NAM of the transponder aerial connector is perfect.
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 for + after ignition feed on connection AP43 of the transponder aerial connector.
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 the condition and connection of the 40-track UCH connector PE1 (tabs bent, broken, oxidised, etc.).
Repair if necessary.
Check the insulation, continuity and absence of interference resistance of the following connections:
●Connection code 80Y between components 1618 and 645.
●Connection code 80X between components 1618 and 645.
●Connection code AP43 between components 1618 and 1016.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the connections are correct but the fault is still present, replace the transponder ring.
AFTER REPAIRCarry out another fault finding check on the system.
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