TRANSPONDER IMMOBILISER
Page : 14
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Troubleshooting chart
If the engine will not start, a first diagnostic may be carried out using the LED before checking the other parts
of the ignition system
TEST TO BE CARRIED OUT ONLY WITH THE BLACK KEY
LED SIGNAL
PHASE 1
PHASE 2
PHASE 3
DISPLAYS
SOLUTIONS
2 s
Blank immobiliser
connected to a blank
ECU
Program the system using the keys
0.5 s
Blank ECU
connected to a
programmed
immobiliser
Disconnect the diagnostic plug loop, turn
on the ignition with the master key and
start the engine
If OK, connect the diagnostic plug loop,
turn on the ignition with the master key
and start the engine or turn on the
ignition for 3 seconds to memorise the
keys in the system
0.5 s
Permanent
Black key and
programmed
immobiliser module
from another machine
Refit the immobiliser and the original
keys or replace by a new one and
program the system using the original
keys
0.5 s
0.5 s
Permanent
No diagnostic plug
loop or faulty
immobiliser/ECU
link
Refit the diagnostic plug loop or check
the interface wire between the
immobiliser and the ECU
0.5 s
0.5 s
Permanent
Antenna disconnected
or faulty
Key without
transponder
Check the antenna connection and
resistance (17
Ω
)
Change the key
0.5 s
0.5 s
Permanent
Wrong or faulty key
or programmed
immobiliser from
another machine
Refit the original immobiliser or replace
by a new one and program the system
using the original keys
2 s
0.5 s
Permanent
Blank immobiliser
connected to a
programmed ECU
Program the system using the keys
