key battery MITSUBISHI 3000GT 1994 2.G User Guide

Downloaded from www.Manualslib.com manuals search engine 54-216CHASSIS ELECTRICAL - Theft-alarm System
CIRCUIT DIAGRAM (CONTINUED)
KEYLIGHTi#+#ERAUTOMATIC
SHUT-OFF UNIT
7vI A/T hM/T
1B-LI
7
IGNITIONSWITCHCST)
2%-Y0B-Y
Y-B
M/T ! A/T
i-B
t
;-B ;)LG-E
I
CLUTCH
PEDAL
POSITION
N SWITCH
I(c-64)
2B-Y
2B-Y
I ,
O.05B-Y
A/T i M/T
MFI SYSTEMMFI SYSTEM
BATTERYlm0.85B-R
20B-R
oF;;;fBil?&&R ii'k'AL ^i
-----J;B (c-66)ygYE
R-B%B-LB B
I@ /I
164 5 EA
o , ~ ,o~~~A A
A
DATA LINK CONNECTOR
00
I
(A-09X)(A-66)0 E-22)EiQ(c-02)(c-31)(c-56)cm
El q
(c-65)(c-66)OFRONT SIDE
HR15M02BA
1 TSB Revision

Downloaded from www.Manualslib.com manuals search engine CHASSIS ELECTRICAL - Theft-alarm Svstem
J, c-66fl,
WC’l----i21c-7712-1
A.Ilx
JJT
@j&j Ek!ifkBoR
51
bEYZIF E
ml
“I: ,.,!!IJ,6,
L
p$zsqc-s’
I2 c-58
m3466
[01
ECUr
%,lcH!i iNDERIC-66
1
CHECKING THE CIRCUIT AND INDIVIDUAL PART1. ETACS POWER-SUPPLY AND GROUND CIRCUITS
Description of operationThe battery supplies a stabilized 5 V power supply to the
ECU, via the constant-voltage circuit and terminal 51 (which
is directly connected to the battery).
ECU terminal voltage (Connection condition of the ECU con-
nector).
I
ECU
SignalConditionTerminal
terminal No.
voltage
51ECU power supplyAt all times12v
2. KEY-REMINDER SWITCH INPUT CIRCUIT
Description of operationThe key-reminder switch is switched OFF and HIGH-level
signals are sent to the ECU when the key is inserted into
the ignition key cylinder: when the key is removed, the key-re-
minder switch is switched ON and LOW-level signals are sentto the ECU.
ECU terminal voltage (Connection condition of the ECU con-
nector).
I
ECUTerminal
terminal No.SignalConditionvoltage
\
L)
L)
64Key-reminder
switch
Key removed12 V
Key inserted0 V
d
1 TSB Revision

Downloaded from www.Manualslib.com manuals search engine .,i”i, LlNl Q10. HORN ACTIVATION CIRCUIT
?a/ ;
dl
spored10.
Description of operation
The ECU transistor is turned ON if the vehicle door, etc. are
opened without use of the key.
This energizes the horn relay to activate the horn.
Checking the horn activation circuit (Disconnect the connector
of the ECU, then short-circuit terminal connector No.58, and
activate the horn relay.)
54-230CHASSIS ELECTRICAL - Theft-alarm System
z “2
EL? II A-as ’
I3 Ii3
c!
ig”‘“,1 u~cw ~ I A.,Op+J
x
6IZ)Y.l,.-”Step
1Check objectmatMal-
I Icondi- functionCauseRemedy
Horn relay termi-nalvoltage(4-Ground)12v ovMalfunction of
Check thethe horn relayhorn relay
(Refer to
P.54-118.)
Horn terminal volt-12v ovHarnessdam-age (LH & RH)Repair the
aged or discon-harness(1 -Ground)netted
Horn terminal volt-age (LH & RH)(1 -Ground)Nor-
1IItion
HornHornMalfunction ofReplacesoundoesn’tthe hornthe hornds (0 sound
V)(0 w
BatteryDamaged or dis-Repair thevoltageconnected wiringharness
of ground circuit
11. THEFT ALARM HORN RELAY POWER-SUPPLY
CIRCUIT
Description of operation
Power voltage is always supplied to theft alarm horn relay.
Checking the horn relay power-supply circuit (Disconnect the
theft alarm horn relay)Check object
THEFT ALARMHORNRELAYconnector terminal
voltage 1NormalMal-
condi-func-
CauseRemedy
tion
tion
12v
ovFuse (14)
dam-Replace the
aged or discon-fusenetted
Damaged or dis-Repair the har-connected har-nessness
TSB Revision

Downloaded from www.Manualslib.com manuals search engine 54-234CHASSIS ELECTRICAL - Theft-alarm System
15. STARTER RELAY ACTIVATION CIRCUIT
lgnlllonKey reminderBattery
switch (STIswtch
B-23l-
Starter motor
Lo03 52“:
&Y
. ..--N. OYa.’ ‘pa3
PI/l i M/T
Theft-
alarm
starter
relay
IC-56
A1
ECUm
PANWNEUTNLl. PONlTlON WITCH:1(prom 1993 NODEL)
:2cm2 N@nEL>216Fcas
Description of operationThe ECU transistor is turned ON if the vehicle door etc. are opened without use of the key. This turns
OFF the starter relay and power ceases to be supplied to the starter magnet switch.
Checking the starter relay activation circuit (Disconnect the connector of the ECU, depress fully the clutch
pedal and activate the starter relay)
SW
1
t
2Check object
Starter relay terminal voltage
(2-Ground)
Startermotor terminal
(1 -Ground)I
Normal
condition
12v
12v
:
Malfunc-
tion
ov
ov
Cause
Malfunction of the starter
relay
Harness damaged or dis-
connected:
Remedy
Check the starter relay
Repair the harness
(Starter motor connector B-24: Separation)
3Continuity between “B-24” 0
Q-clDamaged magnet switchReplace magnet switch
connector and ground
( TSB Revision