1996 MITSUBISHI 3000GT check engine

Downloaded from www.Manualslib.com manuals search engine L
iGENERAL
- How to Diagnose33
Power supply
Fuse
’ i
ON (2),----c//ISwitch
I
Motor
Z16AO260
GENERAL ELECTRICAL SYSTEM CHECKSA circuit consists of the power supply, switch, relay, load
ground, etc. There are various methods to check a
circui;
including an overall check, voltage check, short circuit checkand continuity check. Each of these methods is briefly de-
scribed in the following.
1. VOLTAGE CHECK
(1) Ground one lead wire of the test light. If a voltmeter
is used instead of the test light, ground the groundingside lead wire.
(2) Connect the other lead wire of the test light to the
power side terminal of the switch connector. The test
light should come on or the voltmeter should indicate
a voltage.
(3) Then, connect the test light or voltmeter to the motor
connector. The test light should not come on, or the
voltmeter should indicate no voltage. When the switch
is turned on in this state, the test light should come
on, or the voltmeter should indicate a voltage, with
motor starting to run.(4) The circuit illustrated here is normal but if there is
any problem such as the motor failing to run, check
voltages beginning at the connector nearest to themotor until the faulty part is identified.
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Downloaded from www.Manualslib.com manuals search engine GENERAL - How to Diagnose2. SHORT-CIRCUITS CHECK
A blown fuse indicates that a circuit is shorted. The circuit responsible can be determined by the
following procedures.Remove the blown fuse and connect a test light in its place
(Switch is in the OFF position)
Test light comes on
+
NO
1 Short circuit between fuse block and switch (A)Turn on the switch
(Test light comes on but the illumination light does not come on)ItDisconnect the illumination light connector
I+Test light remains on
iNO
Short circuit between the illumination light connector and illumina-tion liaht ((3
Short circuit between the switch and illumination
light connector (B)A
Power supply
(Remove the fuse.)
1OFF
gi
location
Switch
a
Illuminationfight
16.4om2
BPower supply
Fuse block(Remove
the fuse.)
* Disconnect the load
iii
Illumination
light
T16Aom
13. CONTINUITY CHECK
Self powertest light
(or ohmmeter)
Z16AO269
C
Power supply
Test
lightFuse block
(Remove the fuse.)
Switch
Disconnect the load
ii
Short-circuit- location
Illumination
light
16Alncd?00000741
(1) When the switch is in the OFF position, the self powertest light should come on or the ohmmeter should
read 0 ohm only when the terminals 1 and 2 are inter-
connected.
(2) When the switch is in the ON position, the self powertest light should come on or the ohmmeter should
read 0 ohm only when the terminals 3 and 4 are inter-
connected.
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Downloaded from www.Manualslib.com manuals search engine 38CONFIGURATION DIAGRAMS - Engine Compartment
ENGINE COMPARTMENT
(UP TO 1993 MODELS)
Connector
symbol
A
01xthru
34X

A-20A-21
A-22
A-01X
A-02X
A-03X
A-04X
A-05X
A-06X
A-07X
A-08X
A-09XHeadlight relayABS power relay
Fog light relay
Radiator fan motor relay (LO)
Taillight relay
Horn relay
Radiator fan motor relay (HI)
Pop-up motor relayStarter
relavA-12 A-13A-14 A-15 A-16A:174-18
A-79 q-20 A:21 4-22
A-10X
A-11X
A-12
A-13
A-14
A-l 5
A-16
A-17
A-18Generator relayIOD or Storage connector
ABS front speed sensor (RH)
ECS front shock absorber (RH)
Washer fluid level sensor
Front wiper motor
Engine speed detection connector
Fuel pump check connector
Ignition timing adjustment connector
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Downloaded from www.Manualslib.com manuals search engine 42CONFIGURATION DIAGRAMS - Engine Compartment
ENGINE COMPARTMENT
(FROM 1994 MODELS)
A01xthru
34X
A-20 A-21
A-22
NOTE*: Up to 1995 models
A-01X
A-02X
A-03X
A-04X
A-05X
A-06X
A-07X
A-09X
A-l OX
A-12A-13 A-14A-15 A-17A-01X!i\1 A-16 /A-18 A-19 A-20 A-21 A-22/I
Headlight relay
ABS power relay
Fog light relay
Radiator fan motor relay (LO)
Taillight relay
Horn relay
Radiator fan motor relay (HI)
Starter relay
Generator relayA-11XIOD or Storage connector
A-12ABS front speed sensor (RH)
A-13ECS front shock absorber (RH)*
A-14
Washer fluid level sensor
A-15Front wiper motor
A-16Engine speed detection connector
A-17Fuel pump check connector
A-18Ignition timing adjustment connector
A-l 9Front washer motorTSB
Revision

Downloaded from www.Manualslib.com manuals search engine CIRCUIT DIAGRAMS - MFI Circuit
109 ~
IGPSW1-
2B
“#
-W
13SA
-W
-W
I
-W
;
i
IONH(IG1)
I
MFIRELD
-L
--o
-L
.R
,
R
-,:f
L
AY7
40
Ll(c-34)
3
]
FUELPUMP
(F-16)
17 m
\
2
J/B
1.250
)I
‘6 (c-71)
:smB-L0.85B-
0.85B-FUEL PUMPCHECKCONNECTOR 1.25B-
B-
59 (D-04)
I
COMBINATION
METER
)
1.25B-r-------.
I
lcD-03)
R
Ij 1.25B-
ZTER)
G-3
&
7
1
I
3c
G-F
(c-54):.
(c-53):2
BM
B
+5
3
0
3
n
/I1. 25:I/Y-WL--------
1. 251
ENGINE
CONTROL
MODULE
21
-.NOTE:l:FEDERAL:2:CALIFORNIA
I
M02AB
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Downloaded from www.Manualslib.com manuals search engine CIRCUIT DIAGRAMS - MFI Circuit 125
IGNITIONSWITCH(IG1)
\,\I
5\IS(c-71)
-___-_---__
WARNING WARNING
LIGHT LIGHT
/
(F>1.25B-W(F>1.25B-W
G-I G-I
IGNITION IGNITION
G-R
1.25B-
,6 (D-44)1.25B-
FUEL PUMP
CHECK
CONNECTOR 1.25B-
tTURN-SIGNAL LIGHT
AND HAZARD LIGHT
59 (D-04)
COMBINATIONMETER1.25B-
7------ ------
COMBINATION
&%O,METE,:Y-W
I
6m_-_____-__-
Y-W
OSic-54)
r--------
.25B-1
1.25E
.25E
2B
tiF1IELAY7
g(c-34)
3
3
FUEL
PUMP
(F-16)
HR05M03AB
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Downloaded from www.Manualslib.com manuals search engine CIRCUIT DIAGRAMS - MFI Circuit 133 ~
IGNSW1
28.
ITI1TCH
a:6
WI
2B-Y(
5
t
(D-44)1.25B-L--------___
(D-03)ICOMBINATION
METER/ 1.25B-L
(F)1.25B-W/
G-lliiiioojllliR:1IIIY-WI
t
I
----~~--~-----------_6m
IGNITIONY-W
I
/II1. :25B
G-h(Y-W)$, (F)Y/I+JI
,
L--------,,E
ELC-4A/TY-WMETER AND
GAUGES
(c-53)35B
------libel l. :0
2B
(IGl)B-W
1
J/BCHARGING
1.25B-L
FUEL PUMP0.85B-wCHECKCONNECTOR 1.25B-1i
TURN-SIGNAL LIGHT
g(D-04)AND HAZARD LIGHT
1
;;y;&NATION1. 25'B-R
-I
t.--r------I
MFIRELAYII7
4ic-30)
g(c-34)
3
1
FUEL
PUMP
m
)
j(F-14)
oFm (c-14)Cc-30)(c-34)(c-53)(c-54)(c-71)(c-82)
HR05M04AB
1 TSB Revision

Downloaded from www.Manualslib.com manuals search engine CIRCUIT DIAGRAMS - MFI Circuit
COMPONENT LOCATIONUp to 1993 models and 1994, 1995 models Non Turbo (Federal)
NameSymbol
Air conditioning relay0
Air conditioning switch
Camshaft position sensor
a
Check engine/malfunction indicator lampP
Crankshaft position sensorD
Data link connectorR
EGR solenoid Z
EGR temperature sensor

Engine control module
Engine coolant temperature sensor
Evaporative emission purge solenoid
Fuel pressure solenoid

Heated oxygen sensorE
idle air control motor (stepper motor)L
Name/ Symbol
Ignition coil (ignition power transistor)
Ignition timing adjusting terminal
Injector
(1
Multrport fuel rnjectron (MFI) relay
ParWNeutral position switch c&T>
Power steering pressure switchH
Resistor W
Throttle position sensor (With built-in closed throttleCposition switch)
Turbocharger waste gate solenoid U
Variable induction control motor (DC motor) (withJbuilt-in induction control valve position sensor)

Vehicle speed sensorFIVolume air flow sensor (with built-in intake air A
temperature sensor and barometric pressure sensor)
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