Mitsubishi 3000GT - Page 52

CHASSIS
ELECTRICAL
-
lgnition
Switch
and
lmmobilizer System
54-2
Gode
No. 12 lD codes are not the same or
are
not
registered
Probable
cause
The lD code
which is senl from the transponder
is not the
same as
the lD code
which
is registered in the immobilizer-EOU.
o
The lD code
in the ignition
key
being
used
has nol
been
properly
registered.
o
Malfunction ol
immobilizer-ECU
Re-register
the lD code.
(Refer
ro
P.54-5.)
INSPECTION CHART
FOR TROUBLE SYMPTOMS
Trouble
symptom
Inspection
procedure
No.
Rderence
page
Communication
with the MUT-II is not
possible
1
il-z
Diagnosis code
No. 54 has been
generated
by
the
engine-EGu
2
54-3
lD code cannol be
registered
using
the MUT-II
3
54€
Engine does
not
start
(tums
over but does
not ignite)
4
w
lmmobilizer-ECU
power
circuit and earth circuit check
5
il4
INSPECTION
PROCEDURE FOR TROUBLE SYMPTOMS
lnspectlon
Procedure 1
Gommunlcation
with the MUT-II
ls not
posslble.
Probable
cause
The cause
is
probably
a
malfunction of the diagnosis line or
the immobilizer-ECU
is not functioning.
o
Malfunstioi
of dhgnoeis
line
o
Malfunctbn ol
harn€ss or
cdrnector
o
Malfunction
of immobilizer-EOU
Chcck the following
connectora.
c-70, c-90
Can the MUT-II communicate
with the
Ch€c&
the
andearthc
Disconnect the engine-EcU connector
C-99
and
immobilizer-ECu
connector
C-90 and
measure at the hamess side
o
Continuity between
the
C-99
terminal
No. 91 and C-90 terminal
No. 5
OK: Continuity
Gheck the followlng
clnnectorc.
c-90, c-99
Check
the
ham€ss wi]€ betüreen
tho
engine-EOU
and
immobillzer-EOU, and
Chec*
the hamess between
the immo-
bilizer-EoU
power
circuit and
the eanh
circuit.
(Refer
to inspsction
procedure
5.)