Mitsubishi 3000GT - Page 53

54-3
GHASSIS ELECTRICAL
-
lgnirion
switch and tmmobitizer
system
Inspection
Procedure 2
Diagnosis
code
No.
54
has
been
generated
by the
engine-EGU.
Prcbable
cause
Theß
is
a
problem
wiüt
communication betw€on the
engine-EGU and the
immobilizer-ECU.
o
o
o
Malfurrction
of
hamess
or
connector
Malf
unc.tion of immobilizer-EOU
Malfunction
of engine-EOU
Chock
lho
iollowlng
conncstorr.
c-21
(r..FrD),
c€0
(RHD),
c-90, c-99
Disconnect
tho
engine-EcU @nnector
C-99
and
immobilizer-EOU
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
Ched< he hamess wire
b€twe€n tho
engineECU and
immobilizer-ECU,
and
ls
diagnosis code No. 21
being
gener-
ated by the immobilizer-EOU?
Checkthe hamess
betweenth€ immobi-
lizer-ECU
power
circuit
and the earth
circuit.
to inspection
procedure
5.)
lnspection
Procedurc
3
lD
code
cannot be
rcgistered uslng
the
MUT-tr.
Prcbable
cause
The
cause is
probably
that
the immobilizer-Ecu
cannot read the lD
oode, or there
is
a malfunction
of the immobilizEr-ECU.
.
Matfunction of transponder
o
Malfunction
of ignition key ring
antenna
.
Maffunclion
of hamess or
@nnec.tor
.
Malfunc.tim
of immobilizer-EOu
No
ignition keys
can be
registered.
Replace
lhe ignition key that
cannot
be
registercd.
Re-rcgister
the lD
code.
(Rebr
to Pj54-5.)
ls a normal
diagnosis code
output? To
diagnosis cods classifi€tion
table
(Refer
to P.54-1.)
Checkthe
hamoss
between
the immobi-
lizer-EGU
power
circuit and the
earth
circuit.
to anspection
procedure
5.)