sensor MITSUBISHI SPYDER 1990 Service Repair Manual

ENGINE (TURBO)
AND ENGINE>
Caution
1. Always apply the brakes when shifting the select or lever to ran&, or vehicle will
forward.
2. Driving tests always need another personnel.
NOTE
In a new vehicle [driven approximately 500 km (300 mile) or less], the volume air sensor output
is sometimes 10 higher than the standard frequency.
The injector drive time represents the time when the cranking speed is at 250 or below when the
supply voltage is 11 V.
In a new vehicle [driven approximately 500 km (300 mile) or less], the injector drive time is sometimes
longer than the standard time.
Fuel is injected into all cylinders simultaneously.
In a new vehicle [driven approximately km (300 mile) or less], the step of the stepper mo tor is sometimes
30 steps greater than the standard value.
If the throttle position sensor voltage rises 100 from the voltage when the engine is at idle and th e
closed throttle position switch turns from on to of f at this time, the sensors are normal. If the throttle position
sensor voltage rises 100
from the voltage when the engine is at idle, the t hrottle valve opens, and the
closed throttle position switch turns from on to of f at this, time, the sensors should be adjusted.
Item Inspection
No.item
Inspection contents Normal contentsInspection
procedure page
11HeatedEngine: WarmWhen at 4000 200 or Code No.
gen sensor engine is suddenly(Air/fuel mixture is 30
(Front)
made leaner
when decelerat- ing, and is made
richer when
When engine is
suddenly raceding.)
Engine: Warm Engine is idling
400 or
(The heated 1,000 ,gen sensor signal(Changes)
is used to check
2,500
the air/fuel mix-
ture ratio.)
Volume airl Engine coolant Engine is idling 22-46 Hz’
flow sensortemperature(4.3-5.3 g/s)
(Mass airl
Lights,electric
flow rate) cooling fan and all Engine
accessories: OFF(Turbo)>
l Transaxle: Neutral Hz
range)(1 g/s)
2,500
Engine is raced
Hz
(9.8-12.1
Engine,
Hz ,
Engine>
Frequency (or air
flow volume) in
creases
re- ,
sponse to racing.
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E N G I N E .
AND ENGINE> Troubleshooting
Item InspectionInspection contentsNormal contents
No. itemInspection
‘ p r o c e d u r e
No., ,
13Intake airIgnition switch: ON orIntakeA tCode No. temperaturewith engine runningair tern- sensor,
tureAt .
,
At
At
A t ,
Throttle Ignition switch: ON Set to idle position ,000 position
sor .
Gradually openVoltage increases
in proportion to
throttle opening
angle
Open fully
PowerIgnition switch: ON Battery
voltage No.
27
8
Cranking Ignition switch: ON Engine: Stopped OFF
s i g n a l No.
tionE n g i n e : C r a n k i n g O N 30
EngineIgnition switch: ON or Engine At Code No. antwith engine runningc o o l a n t
ture sensortemper-
a t u r e
At
At
At
2Crankshaftl Engine: Cranking Engine speeds dis- Code No.
positionl
Tachometer: Connectedplayed on the scan
sor tool and tachome-
ter are identical.
l Engine: Idle
l Closed Engine At , 5 0 0 r p m
throttlecoolantposition switch: ON
atureAt ,400 rpm
(32” F)
At
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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>
Revision

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 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)
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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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