battery RENAULT TWINGO 2009 2.G Chasiss ABS Workshop Manual

38C-4
MR-413-X44-38C000$047_eng.mif
V1
MK70 ABS
Vdiag No: 04ANTI-LOCK BRAKING SYSTEM
Fault finding - Introduction38C
4. FAULT FINDING PROCEDURE
Check the battery charge and the
condition of the fuses
Print the system fault finding log
(available on CLIP)
Connect CLIP
no
Dialogue with
computer?
yes
Read the faults
no
Faults
present
yes
Deal with present faults
Deal with stored faults
no
The cause is
still presentFault
solved
yes
Refer to ALP No. 1
Conformity check
no
The cause is
still presentFault
solved
Use fault finding charts
(ALPs)
no
The cause is
still presentFault
solved
Contact the Techline with the
completed fault finding log

38C-6
MR-413-X44-38C000$047_eng.mif
V1
ANTI-LOCK BRAKING SYSTEM
Fault finding - Introduction
MK70 ABS
Vdiag No: 04
38C
Visual inspection of the sealing:
(Only for watertight connectors)
●Check for the seal on the connection (between the 2 parts of the connection).
●Check the seal at the back of the connectors:
–For unit joints (1 for each wire), check that the unit joints are present on each electrical wire and that
they are correctly positioned in the opening (level with the housing). Check that plugs are present on
openings which are not used.
–For a grommet seal (one seal which covers the entire internal surface of the connector), check that
the seal is present.
–For gel seals, check for gel in all of the openings without removing the excess or any protruding
sections (it does not matter if there is gel on the contacts).
–For hotmelt sealing (heat-shrink sheath with glue), check that the sheath has contracted correctly on
the rear of the connectors and electrical wires, and that the hardened glue comes out of the side of
the wire.
●Check that there is no damage to any of the seals (cuts, burns, significant deformation, etc.).
If a fault is detected, repair or replace the wiring (see Technical Note 6015A, Repairing electrical wiring, Wiring:
Precautions for repair)
5. FAULT FINDING LOG
You will always be asked for this log:
–when requesting technical assistance from Techline,
–for approval requests when replacing parts for which approval is mandatory,
–to be attached to monitored parts for which reimbursement is requested. The log is needed for
–warranty reimbursement, and enables better analysis of the parts removed.
6. SAFETY INSTRUCTIONS
Safety rules must be observed during any work on a component to prevent any damage or injury:
–check the battery voltage to avoid incorrect operation of computer functions,
–use the proper tools.
It is forbidden to carry out a road test with the diagnostic tool in dialogue with the ECU because the ABS and
Electronic Brake Distribution functions are deactivated. Braking pressure is identical on both vehicle axles
(risk of a spin under heavy braking).IMPORTANTIMPORTANT
Any fault on a complex system requires thorough fault finding with the appropriate tools. The
FAULT FINDING LOG, which should be completed during the procedure, enables you to keep
track of the procedure which is carried out. It is an essential document when consulting the
manufacturer.
IT IS THEREFORE MANDATORY TO FILL OUT A FAULT FINDING LOG EACH TIME FAULT FINDING IS
CARRIED OUT.

38C-8
MR-413-X44-38C000$141_eng.mif
V1
38C
ANTI-LOCK BRAKING SYSTEM
Fault finding - Operating diagram
Number Description
1Computer
2Hydraulic unit (8 solenoid valves)
3Electric power assisted steering
4Instrument panel - engine management
5Passive brake servo
6Brake lights switch
7Diagnostic socket
8Battery
9Wheel speed sensor
10Target
11Brake discs
MK70 ABS
Vdiag No: 04
MR-413-X44-38C000$141_eng.mif

38C-15
MR-413-X44-38C000$470_eng.mif
V1
38C
ANTI-LOCK BRAKING SYSTEM
Fault finding - Interpretation of faults
DF001
PRESENT
OR
STOREDCOMPUTER SUPPLY VOLTAGE
1.DEF: Feed voltage too low
2.DEF: Feed voltage too high
NOTESConditions for applying the fault finding procedure to stored faults:
Apply the fault finding procedure whether the fault is present or stored.
Use the Technical Note wiring diagram for New Twingo.
1.DEF
NOTESSpecial notes: This fault will appear in a road test
(speed greater than 12 mph (20 km/h)) if the computer
supply voltage is below the minimum operating voltage
(9.4 V < min battery voltage < 10 V).
Check the tightness and the condition of the battery terminals.
Check the battery voltage and carry out any work required to obtain the correct voltage (10 V < battery voltage
< 17 V).
Check the charging circuit (see 80A, battery).
Check the condition and position of the 15A and 20A fuses in the engine fuse and relay box.
Check the condition and position of the F10 5 A fuse in the Passenger compartment fuse box.
Consult section 81C, Fuses.
Check the connection and condition (possible damage to the wiring) of the connector of component 1094.
If the connector is faulty (see Technical Note 6015A, Repairing electrical wiring, wiring: Precautions for
repair), repair the connector, otherwise replace the wiring.
●Connector of component 1094 disconnected, check the insulation and continuity of connection MAH of
component 1094 (tightness, oxidisation etc.).
●Connectors of component 1094 and R107 disconnected, check the insulation and continuity of
connection AP5 between component 1094 and intermediate connector R107.
●Check the insulation and continuity of connection AP5 between intermediate connector R107 and
component 1016.
●Connectors of component 1094 and R67 disconnected, check the insulation and continuity of
connections BP8 and BP14 between component 1094 and intermediate connector R67.
●Check the insulation and continuity of connections BP8 and BP14 between intermediate connector R67
and component 597.
If the connection or connections are faulty (see Technical Note 6015A, Electrical wiring repair, Wiring:
Precautions for repair), repair the connectors or wiring, otherwise replace the wiring.
If the checks reveal no faults, perform a conformity check of component 597.
If all the checks are in order, reconnect the computer and clear the computer fault memory.
Exit the fault finding procedure and carry out a road test.
If the fault is still present, contact the Techline.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS_V04_DF001
MK70 ABS
Vdiag No: 04
MR-413-X44-38C000$470_eng.mif

38C-16
MR-413-X44-38C000$470_eng.mif
V1
ANTI-LOCK BRAKING SYSTEM
Fault finding - Interpretation of faults
MK70 ABS
Vdiag No: 04
38C
DF001
CONTINUED
2.DEF
NOTESSpecial notes:
This fault will appear in a road test (speed greater than
12 mph (20 km/h)) if the computer supply voltage is above
the maximum operating voltage (17 V < maximum battery
voltage < 19 V). This fault may appear when starting using a
charger or a 24 V battery.
Check the charging circuit (See MR411 Mechanical systems, 16A, Starting-charging).
If all the checks are in order, reconnect the computer and clear the computer fault memory.
Exit the fault finding procedure and carry out a road test.
If the fault is still present, contact the Techline.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.

38C-23
MR-413-X44-38C000$470_eng.mif
V1
ANTI-LOCK BRAKING SYSTEM
Fault finding - Interpretation of faults
MK70 ABS
Vdiag No: 04
38C
DF010
PRESENT
OR
STOREDPUMP MOTOR CIRCUIT
NOTESSpecial notes:
If this fault appears after the computer is replaced, the pump motor connection
has been twisted. Separate the hydraulic unit from the computer and restore the
connection to working order.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present after: Brake pedal held down and AC016 Test pump
motor actuator command.
Use the Technical Note wiring diagram for New Twingo.
Check the tightness and the condition of the battery terminals.
Check the condition and position of the 15A and 20A fuses in the engine fuse and relay box.
Check the condition and position of the F10 5A fuse in the Passenger compartment fuse box.
Consult section 81C, Fuses.
Check the connection and condition (possible damage to the wiring) of the connector of component 1094.
If the connector is faulty (see Technical Note 6015A, Repairing electrical wiring, wiring: Precautions for
repair), repair the connector, otherwise replace the wiring.
●Connector of component 1094 disconnected, check the insulation and continuity of connection MAH of
component 1094 (tightness, oxidisation etc.).
●Connectors of component 1094 and R107 disconnected, check the insulation and continuity of
connection AP5 between component 1094 and intermediate connector R107.
●Check the insulation and continuity of connection AP5 between intermediate connector R107 and
component 1016.
●Connectors of component 1094 and R67 disconnected, check the insulation and continuity of
connections BP8 and BP14 between component 1094 and intermediate connector R67.
●Check the insulation and continuity of connections BP8 and BP14 between intermediate connector R67
and component 597.
If the connection or connections are faulty (see Technical Note 6015A, Electrical wiring repair, Wiring:
Precautions for repair), repair the connectors or wiring, otherwise replace the wiring.
Use command AC016 Pump motor test. If the fault is still present (no sound of the pump turning or loss of
communication with the computer), replace the entire unit (pump mechanically seized, pump short circuited, etc.).
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS_V04_DF010

38C-59
MR-413-X44-38C000$846_eng.mif
V1
38C
ANTI-LOCK BRAKING SYSTEM
Fault finding - Dealing with command modes
AC003
AC004
AC005
AC006FRONT LEFT-HAND WHEEL SOLENOID VALVES
FRONT RIGHT-HAND WHEEL SOLENOID VALVES
REAR LEFT-HAND WHEEL SOLENOID VALVES
REAR RIGHT-HAND WHEEL SOLENOID VALVES
NOTESConditions of use of the command.
Ignition on, engine stopped and vehicle speed zero.
Before using the commands, check that the battery is fully charged.
The previous 4 commands allow the hydraulic check of each wheel.
Raise the vehicle in order to be able to rotate the wheels, and check that they rotate freely.
Keep the brake pedal depressed to prevent the wheel being tested from being turned by hand (do not brake so
firmly that full braking power is reached).
Select and confirm the command of the wheel being examined (e.g. Front left-hand wheel solenoid valves, etc.)
Turn the wheel concerned by hand; 5 locking/unlocking cycles should be noted on the wheel.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS_V04_AC003 / ABS_V04_AC004
ABS_V04_AC005 / ABS_V04_AC006
MK70 ABS
Vdiag No: 04
MR-413-X44-38C000$846_eng.mif

38C-60
MR-413-X44-38C000$846_eng.mif
V1
ANTI-LOCK BRAKING SYSTEM
Fault finding - Dealing with command modes
MK70 ABS
Vdiag No: 04
38C
AC016
PUMP MOTOR TEST
NOTESConditions of use of the command.
Ignition on, engine stopped and vehicle speed zero.
Before using the command, check that the battery is fully charged.
This command is used to test the pump motor control circuit.
Select command AC016 Pump Motor Test.
The motor must run for 5 seconds.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS_V04_AC016

38C-61
MR-413-X44-38C000$846_eng.mif
V1
ANTI-LOCK BRAKING SYSTEM
Fault finding - Dealing with command modes
MK70 ABS
Vdiag No: 04
38C
AC153
AC154
AC155
AC156BLEED FRONT LEFT-HAND WHEEL
BLEED FRONT RIGHT-HAND WHEEL
BLEED REAR LEFT-HAND WHEEL
BLEED REAR RIGHT-HAND WHEEL
NOTESConditions of use of the command.
Ignition on, engine stopped and vehicle speed zero.
Before using the commands, check that the battery is fully charged.
These 4 commands should only be used if you observe lengthening of the brake pedal travel during a road test
with ABS regulation (the system should have been bled in advance using the conventional procedure).
See ALP8.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS_V04_AC153 / ABS_V04_AC154
ABS_V04_AC155 / ABS_V04_AC156

38C-62
MR-413-X44-38C000$846_eng.mif
V1
ANTI-LOCK BRAKING SYSTEM
Fault finding - Dealing with command modes
MK70 ABS
Vdiag No: 04
38C
AC195
VEHICLE SPEED SIGNAL
NOTESConditions of use of the command.
Ignition on, engine stopped and vehicle speed zero.
Before using the command, check that the battery is fully charged.
This command is used to generate a speed other than 0 mph at the computer's vehicle speed wire output
(connection 47F) for users of that signal (radio, sunroof).
This command has no visible effect on the dashboard speedometer needle.
–Radio: Turn on the radio and make sure that the Adjust volume as a function of speed function is active.
Run command AC195. During the command, you should notice the volume of the sound increase and then
decrease. (See 86A, radio).
–Sunroof: This command has no visible effect on the sunroof. This command changes the activation threshold
of the anti-pinch system (the energy required to close the sunroof varies with vehicle speed due to aerodynamic
constraints). (See 87D ELECTRIC WINDOWS - SUNROOF).
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS_V04_AC195