check engine RENAULT SCENIC 2008 J84 / 2.G Engine And Peripherals - Starting Charging Workshop Manual

16A-6V1 MR-372-J84-16A000$050.mif
16A
Scénic II ph 2
ALP 1 The starter does not work
NOTESTest the condition of the battery (see 80A, Battery, Test 1 Battery check).
Test the condition of the power fuse (see TEST 2 Test of power fuse condition and
source of fault).
Check ET010 Starting conditions met (see 87B, Passenger compartment
connection unit, Fault finding - Interpretation of statuses).
Check that the engine is not jammed.
Check that the following terminals are correctly
tightened:
the battery,
the starter,
the engine earth,
the bodywork earth.
Are the terminals correctly tightened?
Retighten the terminals (see MR 370,
Mechanical, 80A, Battery, Battery:
Removal - Refitting).
Check that the following wires are in good condition:
the wire connecting the battery +, component code
107, to terminal B+ of the starter, component
code 163,
the wire connecting the battery - to the bodywork
earth,
the wire connecting the engine to the bodywork
earth.
Are the wires in good condition?
Repair the damaged wires and terminals. 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 the wiring.
Try starting.
If the starter still does not turn, can a clicking noise be
heard when the starter is activated?
NO
YES
NO
YES
A
NO
B
YES
STARTING - CHARGING
Fault finding – Fault finding charts

16A-11V1 MR-372-J84-16A000$050.mif
STARTING - CHARGING
Fault finding – Fault finding charts16A
Scénic II ph 2
ALP 2 The starter turns but does not engage
NOTESSpecial notes:
Disconnect the battery earth before handling.
Remove the starter (see MR 370, Mechanical, 16A, Starting - Charging, Starter: Removal - Refitting).
Check that the ring gear of the flywheel is in good condition.
Are the ring gear teeth damaged?
Replace the flywheel (see MR 370, Mechanical,
Engine and peripherals, Engine and cylinder
block assembly).
Check the condition of the starter (broken teeth or
worn gears).
Is the starter in good condition?
Replace the starter (see MR 370,
Mechanical, 16A, Starting - Charging,
Starter: Removal - Refitting).
Refit the starter (see MR 370, Mechanical, 16A,
Starting - Charging, Starter: Removal - Refitting).
YESNO
NO
YES

16A-12V1 MR-372-J84-16A000$050.mif
STARTING - CHARGING
Fault finding – Fault finding charts16A
Scénic II ph 2
ALP 3 The starter is noisy when starting
NOTESTest the condition of the battery (see 80A, Battery, Test 1 Battery check).
Check that the noise is actually coming from the starter.
Try to start the engine.
At what point is the noise heard?
Starting phase Just after the engine has started
Check that the starter is correctly secured.
Is the starter correctly secured?
Tighten the starter mountings (see MR 370,
Mechanical, 16A, Starting - Charging,
Starter: Removal - Refitting).
A
YES
B
NO

16A-13V1 MR-372-J84-16A000$050.mif
STARTING - CHARGING
Fault finding – Fault finding charts16A
Scénic II ph 2
ALP 3
CONTINUED 1
Remove the starter and check that the centring pin is
present. Check the condition of the pinion and carry
out a full check of the ring gear.Inhibit the engine injection (see 13B or 17B,
Interpretation of commands), activate the
starter for 2 seconds, and release the key.
Is a fault noticed?
Does the starter continue to run after the key is
released?
Fit a centring pin, or replace the
flywheel (see MR 370,
Mechanical, 10A, Flywheel:
Removal - Refitting), or replace
the starter (see MR 370,
Mechanical, 16A, Starting -
Charging, Starter: Removal -
Refitting).Starter control fault, check the entire starter
control line (see ALP1 The starter does not
work, continued 3 C).
Replace the starter (see MR 370, Mechanical, 16A,
Starting - Charging, Starter: Removal - Refitting).Make several attempts, waiting for 5 minutes
after 5 attempts (let the starter cool). If the result
is still the same after several attempts, replace
the starter (see MR 370, Mechanical, 16A,
Starting - Charging, Starter: Removal –
Refitting).
B
YES
A
YESNO
YESNO

16A-15V1 MR-372-J84-16A000$060.mif
16A
Scénic II ph 2
NOTESPerform this test only after running complete fault finding on the Engine compartment
connection unit using the diagnostic tool (see 87G, Engine compartment
connection unit).
Because the Engine compartment connection unit houses the CHARGING CIRCUIT
function (sub-function: alternator) and checks the alternator via a serial connection.
CHARGING
ALTERNATOR SUPPLY TESTTEST 1
POWER FUSE AND WIRING
TEST THE CONDITION OF THE POWER FUSE AND THE CAUSE OF ITS FAULT TEST 2
WIRING HARNESS CHECKTEST 3
STARTING - CHARGING
Fault finding – Tests

16A-16V1 MR-372-J84-16A000$060.mif
STARTING - CHARGING
Fault finding – Tests16A
Scénic II ph 2
TEST 1 Alternator supply test
NOTESTest the condition of the battery (see 80A, Battery, Test 1 Battery check).
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 370, Mechanical, 16A, Starting -
Charging, Alternator: Removal - Refitting).
Visually inspect the consequences (battery, corrosion, etc.).
With the engine idling, connect a current clamp to the alternator B+ wire, connection code BPDA, with all
consumers switched off.
Current < 5 ACurrent between 5 A and 35
ACurrent > 35 A
Replace the alternator (see
MR 370, Mechanical, 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.
Value of measured current?
(i 1)
< 16 V
≥ 16 V
A

16A-18V1 MR-372-J84-16A000$060.mif
STARTING - CHARGING
Fault finding – Tests16A
Scénic II ph 2
TEST 2 Test the condition of the power fuse and the cause of its fault
NOTESCheck that the engine is not blocked.
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 correct 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 ΩΩ Ω Ω
?
Disconnect the alternator + terminal, then measure
the resistance between the negative battery terminal
and the power fuse outputPossible external causes:
use of a "starter charger", excessively long use of
starter (e.g.: activating the starter with the gear
engaged to move the vehicle) etc.
Is the resistance
≥ 10 Ω?
Replace the alternator (see MR 370, Mechanical, 16A, Starting - Charging,
Alternator: Removal - Refitting).
Check the wiring connecting the alternator and the
starter to the battery + terminal (see TEST 3 Wiring
check).
Is it in good condition?
YESNO
NOYES
D
NO
YES
CNO
A
YES
B

16A-20V1 MR-372-J84-16A000$060.mif
STARTING - CHARGING
Fault finding – Tests16A
Scénic II ph 2
TEST 3 Wiring check
NOTESNone.
Check the condition of the battery terminals.
Confirm that there is no corrosion on the battery
terminals.
Check the tightness of the terminals (see MR
370, 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 370, Mechanical, 80A,
Battery, Battery: Removal - Refitting).
Is the battery in good condition?Change the battery and clean the surrounding
area on the vehicle if necessary.
(see MR 370, Mechanical, 80A, Battery,
Battery: Removal - Refitting).
Disable 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 code 107, and the B + of
the starter, component code 163.
Is the voltage > 2 V?Repair the damaged wires and terminals. 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
NO
YES
NO
YES
YES
NO
A

16A-21V1 MR-372-J84-16A000$060.mif
STARTING - CHARGING
Fault finding – Tests16A
Scénic II ph 2
TEST 3
CONTINUED
With the engine running and the main beam
headlights and heated rear screen on, measure
the voltage between the battery B+, component
code 107, and the alternator B+, component
code 103.
Is the voltage > 0.7 V?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 there is a repair
procedure (see Technical Note 6015A,
Electrical wiring repair, Wiring: Precautions
for repair), repair the wiring, otherwise replace it
With the engine running and the main beam
headlights and heated rear screen on, measure
the voltage between the negative terminal of the
battery, component code 107, and the alternator
frame, component code 103.
Is the voltage > 0.7 V?Check the earths of the engine, alternator,
chassis, gearbox, battery or starter (tightness,
condition of terminals, condition of wires).
Repair the damaged wires and terminals. 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
The electrical circuit is in good order.
A
NO
YES
NO
YES
NO