change time RENAULT SCENIC 2014 J95 / 3.G Petrol Injection - Sagem3000 Workshop Manual
[x] Cancel search | Manufacturer: RENAULT, Model Year: 2014, Model line: SCENIC, Model: RENAULT SCENIC 2014 J95 / 3.GPages: 181
Page 8 of 181

PETROL INJECTION
Fault finding – System operation17B
17B - 8V12 MR-372-J84-17B000$090.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48
Engine immobiliser
The immobiliser function is managed by the UCH and engine management computers.
Before any driver request (card + button press), the engine management and UCH computers exchange
authentication CAN frames to determine whether or not to start the engine.
After more than five consecutive failed authentication attempts, the engine management computer goes into
protection (anti-scanning) mode and no longer tries to authenticate the UCH computer. It only leaves this mode when
the following sequence of operations is carried out:
– the ignition is left on for at least 60 seconds,
– ignition is switched off,
– the injection computer self-supply cuts out when it should (the time varies according to engine temperature).
After this, only one authentication attempt is allowed. If it too fails, the sequence of operations described above must
be repeated.
If the engine management computer still fails to unlock, contact the Techline.
Impact detected
If an impact has been registered by the injection computer (Impact detected), switch off the ignition for 10 seconds
then switch it back on to start the engine. Then clear any faults.
WARNING
Disconnect the injection computer when carrying out any welding work on the vehicle.
JSAA741.0
Page 155 of 181

PETROL INJECTION
Fault finding – Interpretation of statuses17B
17B - 155V12 MR-372-J84-17B000$540.mif
SAGEM 3000
Program No.: A7
Vdiag No.: 44, 48
ET704
ET705
BRAKE SWITCH NO. 1
BRAKE SWITCH NO. 2
NOTESSpecial notes:
Only perform the tests if the statuses do not correspond with the system programming
functions.
Note:
Statuses ET704 and ET705 should change status at the same time. If they are inconsistent, consult the
interpretation of fault DF228 Brake signal.
ACTIVE
or
INACTIVEIf the brake lights are working, check the continuity and the absence of interference
resistance between the following connections:
Brake light switch, track 3 Injection computer, connector A,
black, 32-track track E4
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Repair precautions), repair the wiring, otherwise replace it.
If the brake lights are not operational, check:
– the condition and fitting of the brake switch,
– the condition and conformity of the brake light fuse,
– the conformity of the values in the following table:
Continuity between
tracksInsulation between
tracks
Switch pressed
(Brake pedal released)3 and 4 1 and 2
Switch released
(brake pedal pressed)1 and 2 3 and 4
Replace the switch if the values obtained are not correct.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
1JSAA741.0