MITSUBISHI SPYDER 1990 Service Repair Manual

ENGINE (TURBO)
AND
ENGINE>
Inspection
No. item
Inspection contents Normal contentsInspection
p r o c e d u r e p a g e
No.
22
Crankshaftl Engine: Idle
Engine At Code No. position l Closed
throttlecoolant F)
sor position switch: ON
atureAt rpm
24VehicleDrive at 40 (25 miles/h)
Approx. 40 km/hCode No. speed sensor
25BarometricIgnition switch: ON
HeightAt101Code No. pressure
sensor
At 600 95
(1,969 ft.)
(3,937 ft.)
At 1800 81
(5,906 ft.)
26Closedl Ignition switch: ON Throttle valve: SetONCode No. throttlel Depress accelera- to idle position
tion switch tor pedal Throttle valve:
Slightly open
Power steer- Engine: IdleSteering wheel OFFCode No. ing pressure
switchSteering wheel turn- ON
ing
A/C switch
Engine: Idle
A/C switch: OFFOFF
(When A/C switchdure No.
is ON, 32
should beA/C switch: ONON
operating)
Park/Neutral
Ignition switch: ON or positiondure No..
switch 2, or
1Injectors**Engine: Cranking
When engine
ant temperature is Engine,
1 5 - 2 2
Engine>
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E N G I N E
AND ENGINE>. . .
Item Inspection
No. item
41Injectors**Inspection contents
Engine: Cranking
procedure
When engine
a n t t e m p e r a t u r e
Engine>
When engine cool-
ant temperature is Engine
( T u r b o ) ?
7.2-11
.
Engine>
,l Engine coolantEngine is idlingtemperature: Engine
(Turbo)>
2.2-3.4l Lights,electriccooling fan and all Engine>
accessories: OFF l Transaxle: Neutral 1.75
range) E n g i n e
44
When engine is Increases
denly raced
.
Ignition coilsl Engine: WarmEngine is idling
and ignitionl Timing light is set Engine
power(The timing light
sistor is set in order to(Turbo)>
check actual __
tion timing)2,500
. .
.
,
Idle air con-e Engine coolantA/C switch: OFF2-25 steps
trol
position*
re:
l
Lights,Engine
(Turbo)> cooling fan and allA/C switch: OFF Increases by
accessories: OFF
l Transaxle:1 steps
tral range)
l Closedthrottle .
position switch:
l
Idle l
A/C switch: OFF Increases by Select lever:(When A/C switch
is ON, A/C com- r a n g esteps
pressor should be
operating)
A/C
clutch relay Engine: Warm, idle
A/C switch: OFF
A/C switch: ON OFF (Compressor
clutch is not dure No.
ating)32
OFF (Compressor
clutch is operating)
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E N G I N E ( T U R B O ) .AND ENGINE>
Inspection
No.item
Inspection contents , . N
O.
55 motorl Engine coolantA/C switch: OFFIncreases by
positiontemperature:
sor80 (176
Engine>
l Lights, electric
cooling fan and
all accessories: A/C switch: fromIncreases by ,
OFF OFF to ON8 50 steps
l
Transaxle:
Neutral
range)
l Closed throttle
position switch: l
A/C switch:
Increases by
ONOFF 3 steps
l Engine: at idle S e l e c t o r l e v e r :
(When the
from range
switch is on, the to range
compressor
should be
operating.)
59Heatedl
Transaxle:3,500 1,000 Code No.
gen sensor gear
(Rear)rangel Drive with wide
open throttle
31Long-term
fuel
pensation Engine: Warm, 2,500
without any load- 1 2 . 5 - 1 2 . 5Code No.
(during closed loop)
32Short-term
Engine: Warm, 2,500 without any loadCode No.
fuel(during closed loop) Engine
pensation
Engine> .
37Calculationl
Engine: WarmEngine is idling12-19
load valuelDriving range (from Engineidle to maximumoutput) .
,
E n g i n e
.
1 8Fuel control Engine: Warm2,500Closed loop 6 7
condition loop When engine is .
raced condition
ManifoldEngine: Warm; idle32.8-46.2Code No. 94
ferential E n g i n e
pressure
sensor55.3-68.7
‘Engine> .
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ENGINE (TURBO)
AND
ACTUATOR TEST REFERENCE TABLE
iter
NoDrive contents inspection contents Normal condition
Inspection
iteminspection
No.
Code01
02
Cut fuel to
injector Idle speed drops
equally for each
injector
Engine: Warm, idle
(Cut the fuel supply to
each injector in turn and
check cylinders which don’t affect idling.)
l Engine:Crankingl Fuelpump:Activated
inspect
accord-
ing to
both the
above
condi-
tions. Pinch the
return hose
with fingers
to feel the pulse of
fuel being
recircu-
lated.
Listen near
the fuel
tank for the
sound of
pump
operation.
Injectors
Fuel pump Cut fuel to No.
injector
03
04
Cut fuel to No.
injector
Cut fuel to No. 4
injector
Fuel pump oper
ates and fuel is
recirculated.
Pulse is felt. Procedure
No. 28
En-
gine (Tur-
bo)>
Typical
pump whine.
when
valve is
Procedure
29
En-
gine>
Code
when
valve is
when
valve
Code No.
Code No.
when
valve is
No.
BTDC
Fan motor oper-
ates at low speed
Jo.
l Ignition switch: ON Fan motor oper-
l switch: ON ates at low speed. 33
Evaporative
emission
p u r g e
solenoid
Solenoid valve
turns from OFF
to ON.
. .
i -
*‘!
. .
Ignition switch: ON
Fuel pres-
sure solenoid
Engine
(Turbo)>
ignition switch: ON
Solenoid valve
turns from OFF
to ON.
10EGR
solenoid
ignition switch: ON
Solenoid valve
turns from OFF
to ON.
Solenoid valve
turns from OFF
to ON.
12Ignition switch: ONTurbocharger
waste gate
solenoid
Engine
(Turbo)>
Basic ignitionl Engine: Idling
Timing light is set
17Set to ignition
nent mode’
the fan
notors (radiator
condenser).
Ignition switch: ON
l A/C switch: ON
fan
Hi)
an (Hi)
the fan
notors (radiator
condenser).
fanHi)
an (Low)
Revision

ENGINE (TURBO)
AND Troubleshooting ,
CHECK AT THE ENGINE
TERMINAL VOLTAGE CHECK CHART1. Connect a needle-nosed wire probe (paper
etc.) to
a
probe.
2.insert the needle-nosed wire probe into each of the ECM
connector terminals from the wire side, and measure the
voltage referring to the check chart.
NOTE
1.Measure voltage with the ECM connectors connected.
2. You may find it convenient to pull out the ECM to
make it easier to reach the connector terminals.’
3.Checks don’t have to be carried out in the order gi ven
in the chart.
Caution
Short-circuiting the positive
probe between a con-
nector terminal and ground
vehicle
wiring, the sensor, ECM, or all three. Use care to pre-
vent this!
3.If voltmeter division from standard value, check
the corresponding sensor, actuator and related elec trical
wiring, then repair or replace.
4. After repair or replacement,, recheck with the v oltmeter
to confirm that the repair has corrected the proble m.
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E N G I N E
AND ENGINE>
ECM Connector Terminal Arrangement
Check item (Engine Normal conditionTerminalNo.
Engine
TerminalNo.
Engine>
1No. 1 injector Engine: Warm, idleFromlNo. 2 injector Suddenly depress the accelerator mentarily drops sl
ightlypedal.
No. 3
No. 4 injector
Fuel pressure solenoidIgnition switch: ON
Engine: From cranking to idling
(Within approx. 2 minutes)
1
14 14
2
15
2
15
3
l W a r m i d l e
l . Check after hot re-
Stepper motor coil I
Stepper motor coil I
Idle air control motor Ignition switch: Immediately or more
turning ONtartly) O-l
Idle air control motorIgnition switch: Immediately after or more
turning ONtartly) O-l
Idle air control motorIgnition switch: Immediately after (Momentarily)
valve position sensor
turning ON O-l or 4.5-5.5
Idle air control motor Ignition switch: Immediately after (Momentarily)
valve position sensor
turning ON O-l or 4.5-5.5
EGR solenoid Ignition switch: ON
l
Engine: IdleFrom momentarily
l Suddenly depress the accelerator drops
4
17
5
18
6
p e d a l .
Engine/transaxle general Engine: Idle4.5-5.5
torque reduction
signal 1During driving and speed-changingafter engine warming upI
I
I
I
I
pump relay
pump relay module Ignition switch: ON
Engine: Idle
Ignition switch: ON
Engine: Cranking
.
Evaporative emission
solenoid Engine: Idle
Ignition switch: ON
Engine: Warm, 3,000
77
8
9
9
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ENGINE (TURBO)
AND ENGINE>
Check itemIgnition power transistorCheck (Engine Normal
Engine: 3,000 .
Ignition power transistor
Terminal No.
Engine
Terminal
No.
Engine>
10 10
23 23
11
12
Turbocharger waste gate Ignition switch: ON
solenoid
Engine: Idle premium
gasoline is used)
Power supply Ignition switch: ON
2525
Boost meter
Ignition switch: ON
l Engine: IdleFrom depress the accelerator drops
16
19
19Volume air flow sensor re- Engine: IdleQ - l
set signal
Engine:6-9
Fan motor relay (High)Radiator fan is not operating [Engine
coolant
2020
21
22
33
.
Radiator fan is operating at high
s p e e d [ E n g i n e
i s
Fan motor relay (Low)Radiator fan is not operating [Engine temperature
Radiator. fan is operating at low
speed [Engine coolant temperature
is
or more]
A/C compressor clutch
l Engine: Idle or
relaylA/C switch: OFF ON 6 or more i s o p e r a t i n g ) , as A/C clutch
cycles
2 1
22
33
ine: idle after I OFF) . . A Ndrops
II. .
Generator terminal
l
36Ignition switch: OFF ON
lamp(after several seconds
have passed)
pressureEngine: Warm,W h e n s t e e r i n g
idlewheel is station-
ary
When steering
wheel is turned
37
relay (Power supply) Ignition switch: OFF
Ignition switch: ON
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ENGINE (TURBO)
AND ENGINE> Troubleshooting
TerminalCheck itemCheck condition (Engine condition) c o n d i t i o n
No.
Engine>
Terminal
No.
Engine
41 41Generator Terminall Engine: idle after warm-up (radia-
tor fan: OFF)
l Headlight: OFF ONl switch: OFF l Stop lamp: OFF ON
A/C refrigerant A/C refrigerant1 , 3 7 3
ate pressure switch
pressurepsi) or less
pressure side)
1,863 (270
psi) or more
Engine/transaxle general
control torque reduction
request signal 2 Engine: Idle
During driving and
after engine warming up
Engine: Idle
Turn the A/C
,
switch OFF
switch ON (A/C
compressor is
operating)
Engine: Idle at the coolant b - l
ture of or lower
Engine: Warm, idle
Engine: Warm, idle
Engine: 5,000
the at a constant speed
Engine: 3,000
Warm, idle
Engine: 5,000
Engine: Idle
I
Engine: CrankingIor more
Ignition switch:
ON When intake air
t e m p e r a t u r e i s
When intake air 2.3-2.9
t e m p e r a t u r e i s
When intake air
temperature is
When intake air
t e m p e r a t u r e i s
.
42
4343
A/C switch45
46Engine/transaxle general
control torque execution
signal
Heated oxygen
heater (Rear)
55Evaporative emission
ventilation solenoid
58Engine ignition signal
Heated oxygen sensor
heater (Front)
60
61Fuel tank differential pres-
sure sensor
71Ignition switch-ST
Intake air temperature
sensor
‘272
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ENGINE (TURBO)
AND
ENGINE>
Terminal TerminalCheck itemCheck condition (Engine
No. No.
Engine Engine>
7373Manifold differential Engine: Idle
sure sensorl Engine: Idle‘rises from l Suddenly depress the accelerator suddenlypedal
75
75 Heated oxygen sensorl T r a n s a x l e : range
(Rear)l Driving with the throttle widely
3,500 or more
76
76Heated oxygen sensor Engine: Warm, 2,500 0
(Front)(Use a digital-type voltmeter)(repeats)
Backup power supply Ignition switch: OFF
81Sensor impressed voltage Ignition switch: ON4.5-5.5
92IgnitionIgnition switch: ON
3383 Engine coolant Ignition switch:When engine3.2-3.8
ture sensorONcoolant tempera-_
ture is
When engine2.3-2.9
coolant tempera-
ture is
F)
When engine
coolant tempera-
ture is
When engine
coolant tempera-
ture is
1484Throttle position sensor Ignition switch:Idle
ON (Check for
smooth voltage increase as
throttle valve is Wide open
4.5-5.5
moved from idlethrottle valve
position to wide
open throttle.)
85Barometric pressure Ignition switch: When altitude is3.7-4.3
sorON0 (0 ft.)
When altitude is
3.2-3.8
1,260 (3937
86Vehicle speed sensorl Ignition switch: ON 0l Move the vehicle slowly forward (repeats)
Revision

ENGINE (TURBO)
AND
ENGINE> Troubleshooting
Terminal TerminalCheck itemCheck condition (Engine condition) Normal
No. No.
Engine Engine>. .
87Closed throttle position Ignition switch:Set throttle O-l
switchONto idle position
Slightly open 4
or more
throttle valve
88 88Camshaft position sensor
Engine: Cranking. . --
8989
90 90
9191
Engine: Idle
Crankshaft position Engine: Cranking
sor Engine: Idle
Volume air flow sensor Engine: Idle 2 . 2 - 3 . 2
Engine: 2,500 __
Park/Neutral positionIgnition switch: s e l e c t o r
switchONto or
S e t - s e l e c t o r l e v e r . 8 - 1 4 .
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