airbag RENAULT SCENIC 2011 J95 / 3.G Engine And Peripherals Siemens Injection Workshop Manual

13B-18
MR-372-J84-13B050$195.mif
V17
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2DIESEL INJECTION
Fault finding – Function13B
MANAGEMENT OF PRE/POSTHEATING
Pre-postheating management involves controlling the heater plugs and the heater plugs indicator light on the
instrument panel (via the multiplex network). The heater plugs are activated by a preheating unit and the power is
provided by the battery.
When the ignition is switched on, the preheating period is activated; the indicator light comes on for a period
dependent on the battery voltage, atmospheric pressure and coolant temperature.
When the coolant temperature is below a certain threshold, a postheating function enables combustion stability,
and thereby engine operation, to be improved (reduction in unburned fuel and pollutant emissions).
MANAGEMENT OF ENGINE COOLANT TEMPERATURE
Engine cooling is guaranteed by a 2-speed fan assembly (GMV) (slow: GMV1 and fast: GMV2).
The injection computer requests the UPC to actuate them via the multiplex network.
To provide cooling:
– Engine running:
GMV1 is activated when the coolant temperature exceeds 96°C and is deactivated when it drops below 94°C.
GMV2 is activated when the coolant temperature exceeds 104°C and is deactivated when it drops below 102°C.
If the engine coolant temperature exceeds the warning threshold of 120°C, the injection computer requests the
instrument panel computer, via the multiplex network, to switch on the coolant temperature warning light. The
warning stops if the coolant temperature drops below 117 ° C.
If the engine coolant temperature exceeds the threshold of 11 5 ° C, the injection computer requests the UPC
computer, via the multiplex network, to switch off the air conditioning compressor so as to reduce the load on the
engine and attempt to limit its rise in temperature. The cut-off request is cancelled if the coolant temperature drops
below 110°C.
If a fault in the coolant temperature sensor circuit is detected, the injection computer requests that the coolant
temperature warning light is lit and that GMV2 is activated.
In addition to engine management, the injection computer centralises the cooling requirements for the air
conditioning and automatic gearbox/sequential gearbox functions (if fitted to the vehicle).
OTHER HOSTED FUNCTIONS
The other functions hosted by the computer are:
– Multiplex line.
– ADAC (Trip Computer).
– Trip Computer Display.
– Engine immobiliser.
– Airbag.
– Engine stop management.
– Starter management.
– Air conditioning.
– Cruise control/speed limiter.

13B-150
MR-372-J84-13B050$585.mif
V17
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B1 and B2DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET077
IMPACT DETECTED
STATUS DEFINITION"YES": This status indicates that the airbag computer has detected an impact.
"NO": This status indicates that the airbag computer has not detected an impact.
NOTESSpecial notes:
Only perform these tests if the status does not correspond with the system
programming functions.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature
>80 °C
YES
If the vehicle has had an accident, the injection computer receives the impact signal via
the multiplex network and may switch off the ignition.
Switch off the ignition for 10 seconds, then switch it back on, so the engine can be
restarted.
Test the multiplex network (see88B, Multiplexing), and deal with any faults.
NOIn normal operating conditions, status ET077 is NO if the injection computer has
received no impact signal.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
SID301_V44_ET077/SID304_V45_ET077/SID301_V48_ET077/SID304_V49_ET077/SID304_V4D_ET077/SID301_V4C_ET077

13B-177
MR-372-J84-13B050$624.mif
V17
13B
DIESEL INJECTION
Fault finding – Interpretation of statuses
ET703
CRUISE CONTROL/SPEED LIMITER BUTTONS
STATUS DEFINITIONINACTIVE: This status indicates that no button has been pressed.
INCREASE: This status indicates that the increase button is pressed.
DECREASE: This status indicates that the decrease button is pressed.
SUSPEND: This status indicates that the 0 button is pressed.
RESUME: This status indicates that the R button is pressed.
NOTESSpecial notes:
Only perform these tests if the status does not correspond with the system
programming functions.
Use the Wiring Diagram Technical Note for Mégane II ph2, Scénic II ph2, CLIO III,
MODUS and Kangoo II.
INACTIVE
Status ET703 becomes INACTIVE when the cruise control/speed limiter button is not
pressed. These buttons are located on the steering wheel.
Refer to the airbag technical note for the vehicle for details on removal of the driver's
airbag and carrying out the checks in complete safety (see 88C, Airbag and
pretensioners).
If status ET703 does not display INACTIVE,
●check the condition of the cruise control/speed limiter +/- button and the
condition of its connector.
●check the condition of the cruise control/speed limiter "R/0" button and the
condition of its connector,
If the connectors are faulty and if there is a repair procedure (see Te c h n i c a l N o t e
6015A, Electrical wiring repair, Wiring: Precautions for repair), repair the
connector(s), otherwise replace the wiring.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
SID301_V44_ET703/SID304_V45_ET703/SID301_V48_ET703/SID304_V49_ET703/SID304_V4D_ET703/SID301_V4C_ET703
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B2

13B-178
MR-372-J84-13B050$624.mif
V17
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B2DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET703
CONTINUED 1
INCREASE
Status ET703 becomes INCREASE when the cruise control/speed limiter + button is
pressed. This button is on the steering wheel, on the left-hand side.
Refer to the airbag technical note for the vehicle for details on removal of the driver's
airbag and carrying out the checks in complete safety (see 88C, Airbag and
pretensioners).
If status ET703 does not display INCREASE, check the status of the cruise control/
speed limiter +/- button, and the condition of its connector.
If the connector is faulty and if there is a repair method (see Technical Note 6015A,
Repairing electrical wiring, wiring: Precautions for repair), repair the connector(s);
otherwise replace the wiring.
Measure the resistance on the following connections while pressing the + button
(on the button tracks):
●Connection code86G of component 331.
●Connection code 86M of component 331.
If the resistance is not approximately 300Ω, check the continuity of the connection for
the button when the button is in the rest position.
If there is continuity, replace the +/- control button (see MR 392, 385, 364, 370 and 417
Mechanical, 83D, Cruise control, Switch on the steering wheel: Removal -
Refitting).
If the connection or connections are faulty and there is a repair procedure
(seeTechnical Note 6015A, Electrical wiring repair, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.

13B-179
MR-372-J84-13B050$624.mif
V17
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B2DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET703
CONTINUED 2
DECREASE
Status ET703 becomes DECREASE when the cruise control/speed limiter button is
pressed. This button is on the steering wheel, on the left-hand side.
Refer to the airbag technical note for the vehicle for details on removal of the driver's
airbag and carrying out the checks in complete safety (see 88C, Airbag and
pretensioners).
If status ET703 does not change to DECREASE, check the status of the cruise control/
speed limiter +/- button and check the condition of its connector.
If the connector is faulty and if there is a repair method (see Technical Note 6015A,
Repairing electrical wiring, wiring: Precautions for repair), repair the connector(s);
otherwise replace the wiring.
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.
Measure the resistance of the following connections while pressing the "-" button
(on the button tracks):
●Connection code86G of component 331.
●Connection code 86M of component 331.
If the resistance is not approximately 100Ω, check the continuity of the button when the
button is in the rest position.
If there is continuity, replace the +/- control button.
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.
SUSPENDStatus ET703 becomes SUSPEND when the cruise control/speed limiter "0" button is
pressed. This button is located on the steering wheel, to the right.
Refer to the airbag technical note for the vehicle for details on removal of the driver's
airbag and carrying out the checks in complete safety (see 88C, Airbag and
pretensioners).
If status ET703 does not become SUSPEND, check the status of the cruise control/
speed limiter R/0 button and the condition of its connector.
If the connector is faulty and if there is a repair method (see Technical Note 6015A,
Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring,
otherwise replace the wiring.
Measure the resistance of the following connections while pressing the 0 button
(on the button tracks):
●Connection code86G of component 331.
●Connection code 86M of component 331.
If the resistance is not approximately 0Ω, replace the R/0 control button.
If there is continuity, replace the R/0 control button.
If the connection or connections are faulty and there is a repair procedure
(seeTechnical Note 6015A, Electrical wiring repair, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.

13B-180
MR-372-J84-13B050$624.mif
V17
Siemens Injection
SID301 and 304
Vdiag No.: 44-45-48-49-4D-4C
Program No.: B2DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET703
CONTINUED 3
RESUME
Status ET703 becomes RESUME when the cruise control/speed limiter "R" button is
pressed. This button is located on the steering wheel, to the right.
Refer to the airbag technical note for the vehicle for details on removal of the driver's
airbag and carrying out the checks in complete safety (see 88C, Airbag and
pretensioners).
If status ET703 does not change to RESUME, check the status of the cruise control/
speed limiter R/0 button and the condition of its connector.
If the connector is faulty and if there is a repair method (see Technical Note 6015A,
Repairing electrical wiring, wiring: Precautions for repair), repair the connector(s);
otherwise replace the wiring.
If the connector is faulty and if there is a repair method (see Technical Note 6015A,
Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring,
otherwise replace the wiring. Measure the resistance of the following connections
while pressing the R button (on the button tracks):
●Connection code86G of component 331.
●Connection code 86M of component 331.
If the resistance is not approximately 900 Ω, check the continuity of the connection
when the button is in the rest position.
If there is continuity, replace the R/0 control button.
If the connection or connections are faulty and there is a repair procedure
(seeTechnical Note 6015A, Electrical wiring repair, Wiring: Precautions for
repair), repair the wiring, otherwise replace the wiring.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.