Conditions for Checking
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Nominal Value
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Affected terminals: F10
Possible trouble codes: 83,
84, 85
Press key F5 in the system main
menu, select the desired test using the arrow keys and confirm with YES.
Follow the instructions in the TECH 1 display.
Ignition OFF
Wait 12 seconds
Note:
Before the ignition is switched
on, a waiting period of at least 12 seconds must have elapsed since the last
time the ignition was switched off, as otherwise the engine control unit does
not send a new request to the immobiliser control unit for the imo signal
(control unit run-on period).
Ignition ON
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Note:
After the ignition is switched
on, the engine control unit requests the imo signal from the immobiliser
control unit and evaluates the received code. TECH 1 shows the display
on the right:
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IMMO.SIGNAL
TEST
ACTIVE
PLEASE
WAIT
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If the display on the right appears
during the test, the immobiliser control unit is not present.
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IMMO.SIGNAL
TEST
NO
IMMOBILISER!
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If the immobiliser control unit
is not programmed, TECH 1 shows the following display:
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IMMO.SIGNAL
TEST
PROGRAM
IMMOBILISER!
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If no imo signal is received
from the immobiliser control unit, TECH 1 shows the display on the
right:
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IMMO.SIGNAL
TEST
NO
SIGNAL
RECEIVED!
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If an incorrect imo signal is
received from the immobiliser control unit, TECH 1 shows the display on
the right:
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IMMO.SIGNAL
TEST
WRONG
SIGNAL
RECEIVED!
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