alarm MITSUBISHI 3000GT 1991 Owner's Manual

51-28EXTERIOR - Windshield Wiper and Washer
2. WIPER SWITCH
‘ANT” INPUT CIRCUIT
Iin,Ullnl,,en, ll”lC I”,CI”,IIdctcclion CIICUI,
5v
i-i
7 ;;:2
A3II--
ETACS unrt‘,ij I
Wrperswitch
Lolumn switch
” J/B
“I : Vehicles without theft-alarm system“2: Vehicles with theft-alarm system16FO320
Operation Description
L+,When the wiper switch is set to the “INT” position, LOW-level signals are input to the electronic control unit;
the intermittent time interval detection circuit is then activated, and the wipers operate at the intermittent
time interval according to the setting of the intermittent variable volume switch.
Electronic Control Unit Terminal Voltage (Connection Status of Electronic Control Unit Connector)
ECUterminal No.
9”’
1 1 *2
Signal
Wiper switch “INT” signalStatus
Wiper switch “OFF”Wiper switch “INT”
Terminal
voltage
5Vov
Checking the Wiper Switch
(“INT” Position) Circuit (Disconnect the ECU Connector and Check at the
Wiring Harness Side.)
ECUConnected to/measured
terminal No.componentMeasurement TesterconnectionCheck conditionsStandardWiper switch “INT”
No continuityChecking Individual Part
Wiper switch: Refer to
P.51-33.
NOTE
*l : Vehicles without theft-alarm system
“2: Vehicles with theft-alarm system
TSB Revision

EXTERIOR - Windshield Wiper and Washer
3. INTERMITTENT VARIABLE VOLUME SWITCH INPUT CIRCUIT51-29
ETACSunit (ECU)Xi
i-7 II Column switch
JIB
*l : Vehicles without theft-alarm system
“2: Vehicles with theft-alarm systemA-16FO321
eiOperation Description
This circuit functions to input (to the intermittent time interval detection circuit of the electronic control unit)
the set value of the intermittent variable volume switch.
Electronic Control Unit Terminal Voltage (Connection Status of Electronic Control Unit Connector)
ECU terminal No.
SignalStatusTerminal
voltage
13”’
15*2Intermittent variable
volume switch signalIntermittent variable volume switch“FAST” -+ “SLOW”0 + 2.5V
Checking the Intermittent Variable Volume Switch Circuit (Disconnect the Connector of the Electronic
Control Unit and Check at the Wiring Harness Side.)
ECUterminal No.
13”’
15*2
Connected to/measured
component
Intermittent variable
volume switchMeasurement TesterCheck conditionStandardconnection
Resistance
13*‘-ground“FAST” + “SLOW”O+ IkS1(Should change in
1 S*‘-groundaccordance with
changes of the inter-
mittent variable
volume.)Checking Individual Part
Intermittent variable volume switch: Refer to
P.51-33./
idNOTE
“1: Vehicles without theft-alarm system
“2: Vehicles with theft-alarm system
TSB Revision

51-30
EXTERIOR - Windshield Wiper and Washer
4. WIPER RELAY ACTIVATION CIRCUIT
Columnswitch
ETACS untt(ECU) t,
lgnttton switch (ACC)I
Junction block(Multi-purpose fuse)0.85L
*11 $0J\
i?+”
coii
aIt
0.85L-W dA
*’II16FO322
Wiper
motor
Ei
123 4
Operation Description
With the wiper switch at the “INT” position, switch ON the transistor (by the intermittent activation signal
from the electronic control unit) in order to activate the wiper relay.
Electronic Control Unit Terminal Voltage (Connection Status of Electronic Control Unit Connector)
ECUterminal No.SignalStatusTerminal
voltage
4”’
6*2Wiper relay signal)N$Fy switch
I,Ignition switch “OFF”
Ignition switch “ACC”ov
System
voltage
NOTE“I : Vehicles without theft-alarm system
“2: Vehicles with theft-alarm system
Checking Individual Part
Wiper relay: Refer to
P.51-34.
Lj 1
I
I
I
I
‘d ’1
I
\ ~
1 TSB Revision

EXTERIOR - Windshield WiDer and Washer51-315. WASHER SWITCH INPUT CIRCUIT
lgnitlon swatch (ACC)
Columnswitch
ETACS unit(ECU)*,
-7-l
Junction block15~ @ (Multi-purpose fuse)
ON-time detec-\I\I1a
“I : Vehicles without theft-alarm system
“2: Vehicles with theft-alarm system16FO323
Operation Description
While the washer switch is ON, HIGH-level signals are sent to the washer switch ON-time detection circuit
simultaneous with the activation of the washer motor, thus causing the transistor to be switched ON and the
wipers to be activated for a certain fixed time.
Electronic Control Unit Terminal Voltage (Connection Status of Electronic Control Unit Connector)
ECUterminal No.58”’
60*2Signal
Washer switch signal
Status
Ignition switch
“ACC”Washer switch “OFF”Washer switch “ON“
Terminal
voltageov
System
voltage
NOTE*I : Vehicles without theft-alarm system
“2: Vehicles with theft-alarm systemChecking Individual Part
Washer switch: Refer to
P.51-33
1 TSB Revision

INTERIOR - Troubleshootina
TENSION-REDUCER TYPE SEAT BELT
M52EBIACIRCUIT DIAGRAM
ON(IGIlFUSIBLE LiNK@Im
Ia
E?I
qEl2C-68 ,.l 'I/C I/“I u0
1OA015A
,XL
z C-80
i
1 c-77j1'121"14151sij[pER@gqi
C-Slm 3
pTE$i@
r
d
F-19 $6
E-26
@yiq
2
FRONT SEAT;;B; S;;Y$H
FRONT SEATE-14BELT SOLENOID
/EzJ(RH)(LH)
2
I
E-20
m
1
EFS?J---_-___-~~~~__---I
:2cpjX3cc351ck---------------j2_----1kC-65
pziEgqX'
mx2
IIII
I
I
06L----v-----------v ________ Y
7 16"7 14:'" Err1
>>& lo:20
c-?9 PI
SELF-DIAGNOSIS mCHECK CONNECTORat1:VEHTCT.F.S WiTHOUT
\ (RI%(LH) /
#jT m- @$;"LA"'4
*cl - \PxJTPI UC w+c.v,a,,,uhhu ,,ITH7.iREpp&JqH(35AC-RlSlO-NYDOOR SWITCH
;tjgFgiALARMTSB Revision

.52A-6INTERIOR - Troubleshooting
BUZZER
?IIy. 101
COMBINATION
METER
D-05
dl
s“ssl
BUZZER,-& 102
A
T=I-----3>
cA
II:
A
“c:i:~ n (Y-R
piT!$Rq:
D-43 9r----43
A
E-2112
- -
DOORSWITCH(LH)
DIODE
c-09
:
cp>3
LT
ON(IGl)
MSZEBAF
J/B
ETACS UNIT
S&DIAGNOSIS
~oIw~CT~R3ETc-79
mIa
i%i'THEFT-ALARM SYSTEMTSB Revision

INTERIOR - Seat Belt52A-27
CHECKING INDIVIDUAL PART AND CIRCUIT
IGNITION SWITCH INPUT CIRCUITBattery
Fusible link
2oB-y~~/l,l(l,l,,~~ !jw u03w
30AJunction block
*I : Vehicles without theft-alarm system“2: Vehicles wtth theft-alarm system16FO35.3
It/Description of operationA condition for operation of this system is the sending of HIGH-level signals to the electronic control unit
when the ignition switch is switched to the “ON” position.
Electronic control unit terminal voltage (Disconnect the connector of the electronic control unit andcheck the wiring harness side.)
IECU terminal No. SignalCondition-1 ~StandardI
52Ignition switch “ON”Ignition switchOFF
ONov
System
voltageChecking the ground circuit (Disconnect the connector and check the wiring harness side.)
Terminal No.Connected to/measured part
57,’Electronic control unit ground
59*2
NOTE
*I : Vehicles without theft-alarm system
“2: Vehicles with theft-alarm systemMeasurementTester
connectronCheck conditionsStandard
Resistance
57*‘-groundAt all timesContinuity
59*.‘-groundChecking the individual part
Ignition switch: Refer to GROUP 54
- Ignition Switch.
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52A-28INTERIOR - Seat Belt2. SEAT BELT WARNING LIGHT AND BUZZER ACTIVATION CIRCUIT
Fusible link @
Junctron block(Multr-purpose fuse)
ETACS unit (ECU)Description of operation
Place the ignition switch in the ON position, and the transistor will be turned on, blinking the warning light and
sounding the buzzer four times. However, the warning buzzer will not sound unless the key-reminder switch
and seat belt switch are in the ON position.
Electronic control unit terminal voltage (Disconnect the connector of the electronic control unit andcheck the wiring harness side.)
IIIIIECU terminal No. Signal
ConditionTerminal
voltageI\!
Warning light signalAt all timesSystem
6*1voltage
Warning buzzer signal
Key-reminder switch or seat belt switch “OFF”ov8*2
Key-reminder switch and seat belt switch “ON”System
voltage
NOTE“1. Vehicles without theft-alarm system
“2: Vehicles with theft-alarm systemChecking the individual part
Key-reminder switch: Refer to GROUP 54
- Ignition Switch.dSeat belt switch: Refer to
P.5?A-30.
1 TSB Revision