2009 RENAULT TWINGO Engine Starting Charging Workshop Manual

16A-17V2 MR-413-X44-16A000$875.mif
STARTING-CHARGING
Fault finding – Tests16A
New Twingo
TEST1 Alternator supply test
NOTESTest the condition of the battery (see 80A, Battery).
Measure the voltage at the battery terminals with the engine warm and running at idle speed for 2 minutes and with
all consumers switched off.
Voltage value?
Replace the alternator (see MR 411, 16A, Starting - Charging,
Alternator: Removal - Refitting).
Visually inspect the consequences (battery condition, corrosion, etc.).
With the engine at idle speed, connect a current clamp to the alternator B+ wire, connection BPDA, with all
consumers switched off.
Current < 5 ACurrent between 5 A
and 35 ACurrent > 35A
Replace the alternator
(see MR 411, 16A, Starting -
Charging, Alternator:
Removal - Refitting).Keep the engine speed at
3000 rpm and still with no
consumers switched on.Check that there are no
electrical components
consuming an abnormal
amount of current.
Disconnect the fuses one by
one to identify the consumer.
To be examined Value of measured current?
(i 1)
< 14.8V> 14.8V
A

16A-18V2 MR-413-X44-16A000$875.mif
STARTING-CHARGING
Fault finding – Tests16A
New Twingo
TEST1
CONTINUED 1
Keep the engine speed at 3000 rpm with all consumers switched on.
Main beam headlights, de-icing, passenger compartment ventilation.
Value of measured current? (i 2)
Compare i 1 and i 2
i 2 > i 1 + 5A i 2 < i 1 + 5A
The alternator flow rate is
correctReplace the alternator (see MR
411, 16A, Starting - Charging,
Alternator: Removal -
Stop the engine
Value of the electrical current?
> 1A < 1A
Replace the alternator
(see corresponding MR, 16A,
Starting - Charging, Alternator:
Removal - Refitting).Alternator is correct
A

16A-19V2 MR-413-X44-16A000$875.mif
STARTING-CHARGING
Fault finding – Tests16A
New Twingo
TEST2 Test the condition of the power fuse and the cause of its fault
NOTESCheck that the engine is not locked
With the ignition off, measure the voltage between the negative
battery terminal and the power fuse output.
Is the voltage greater than or equal to 10V?
The power fuse is sound The power fuse is faulty
With the battery disconnected, measure the resistance between
the negative battery terminal and the power fuse output.
Is the resistance
≥ 10 Ohms?
Disconnect the alternator + terminal and
then measure the resistance between the
negative battery terminal and the power
fuse output.Possible external causes:
use of a "starter charger", excessively long
use of starter (e.g.: activate the starter, gear
engaged for driving the vehicle) etc.
Is the resistance
≥ 10 Ohms?
YESNO
NOYES
CNO
A
YES
B

16A-20V2 MR-413-X44-16A000$875.mif
STARTING-CHARGING
Fault finding – Tests16A
New Twingo
TEST2
CONTINUED 1
Check the wiring connecting the alternator and the
starter to the battery + terminal (see TEST 3).Replace the alternator (see MR 411, 16A,
Starting - Charging, Alternator: Removal -
Refitting).
Is it in good condition?
Replace the starter (see MR 411, 16A, Starting -
Charging, Starter: Removal - Refitting).
Repair the damaged wires and terminals. If the
connection is faulty and if there is a repair procedure
(see Technical Note 6015A, repairing electrical
wiring, wiring: Precautions for repair), repair the
wiring otherwise change the wiring.
Replace the power fuse (see MR 411, 80A, Battery, Battery: Removal - Refitting).
A
NO
B
YES
NOYES
C

16A-21V2 MR-413-X44-16A000$875.mif
STARTING-CHARGING
Fault finding – Tests16A
New Twingo
TEST3 Wiring test
Check the condition of the battery terminals.
Check that there is no corrosion on the battery
terminals. Check that the terminals are
correctly tightened and secure (see MR 411
Mechanical, 80A, Battery, Battery:
Removal - Refitting).
Are the terminals and posts in good condition
and not corroded?Clean the terminals and posts or replace them,
if necessary.
Check that there are no electrolyte leaks from
the battery (cracks or breakage).
Check that the mechanical mounting of the
battery is sound (see MR 411, Mechanical,
80A, Battery, Battery: Removal - Refitting).
Change the battery and clean the surrounding
area on the vehicle if necessary.
(see MR 411, Mechanical, 80A, Battery,
Battery: Removal – Refitting). Is the battery in good condition?
Inhibit the engine injection (see 13B or 17B,
Interpretation of commands).
With the starter activated, measure the voltage
on connection BPDA between the + terminal of
the battery, component 107, and the B+ of the
starter, component 163.Repair the damaged wires and terminals. If the
connection is faulty and if there is a repair
procedure (see Technical Note 6015A,
Electrical wiring repair, Wiring:
Precautions for repair), repair the wiring,
otherwise replace the wiring Is the voltage > 1 V?
NO
YES
NO
YES
YES
NO
A

16A-22V2 MR-413-X44-16A000$875.mif
STARTING-CHARGING
Fault finding – Tests16A
New Twingo
TEST3
CONTINUED
Check that all the wires connecting the battery,
the alternator and the starter are secure and in
good condition, and that all their terminals are
correctly tightened and secure.
Repair the damaged wires and terminals. If the
connection is faulty and if there is a repair
procedure (see Technical Note 6015A,
Electrical wiring repair, Wiring:
Precautions for repair), repair the wiring,
otherwise replace the wiring With the engine running and the main beam
headlights lit and the heated rear screen on,
measure the voltage between the B+ of the
battery, component 107, and the B+ of the
alternator, component 103.
Is the voltage > 0.7 V?
With the engine running and the main beam
headlights lit and the heated rear screen on,
measure the voltage between the negative
terminal of the battery, component 107, and
the alternator frame, component 103.Check the earths of the engine, the alternator,
the chassis, the gearbox, the battery, or the
starter (check the tightness and condition of
the terminals and the condition of the wires)
(see Technical Note for the relevant
vehicle).
Repair the damaged wires and terminals. If the
connection is faulty and if there is a repair
procedure (see Technical Note 6015A,
Electrical wiring repair, Wiring:
Precautions for repair), repair the wiring,
otherwise replace the wiring Is the voltage > 0.7 V?
The electrical circuit is in good order.
A
NO
YES
NO
YES
NO