light MITSUBISHI SPYDER 1990 Service Service Manual

ENGINE (‘TURBO)
AND ENGINE>
INSPECTION PROCEDURE 23
,
Generator output voltage is low (approx.
[Comment]
The cause may be a malfunction of the generator or one of the problems listed at right.l M a l f u n c t i o n o f c h a r g i n g s y s t e m . l Short harness between t e r m i n a l l Malfunction of the ECM.
OK Check the generator.
,
,. . ,
1
Measure at the generator connector l Connect the connector.
l Voltage between and ground
Engine: idle
Radiator fan: stopped
Headlight: off
on
Stop lamp: off on
Check the following
Check the harness wire between generator and ECM co nnector.
Repair, if necessary.
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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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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
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 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> 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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ENGINE (TURBO)
AND ENGINE> Troubleshooting
Terminal’ No.
6 - 1 2
9 - 1 2 11-12
ground
ground
54-12
55-12
72-92
17-92
-Body
Inspection item
EGR solenoid Normal condition (Check condition)
36-44 [At
Evaporative emission purge solenoid
Turbocharger waste gate solenoid
Engine (Turbo)>
36-44 [At
36-44 [At
E C M g r o u n dContinuity
ECM ground
Heated oxygen sensor heater (rear)
Evaporative emission
solenoid Approx. 12
[At
36-44 [At
Heated oxygen sensor heater (front) Approx. 12 [At
Intake air temperature sensor5.3-6.7 intake air temperature is
[When intake air temperature is
1 1.5 intake air temperature is
Engine coolant temperature sensor
intake is
.
[When temperature is
[When coolant temperature is
1.3 [When coolant
coolant temperature is
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Closed throttle position switch
Continuity (when throttle valve is at idle position
)
No continuity (when throttle valve
slightly
Park/Neutral position switch Continuity (when select lever is at or N)
No continuity (when lever is at 2, or

THROTTLE BODY
CLEANING
1.
2.
Start the engine and warm it up the coolant is
to higher and then stop the
Remove the air intake hose from the
.
3.
4.
5.
6.
7.
8.
9.
Plug the bypass passage inlet of
Caution
Do not allow cleaning solvent to enter the bypass
passage.
Spray cleaning solvent into the valve through throttle’
body intake port and leave it for about 5
Start the engine, race it several times and idle it for about
1 minute. If the idling speed becomes unstable (or if the
engine stalls) due to the bypass passage being plug ged,,
slightly open the throttle valve to keep the
If the throttle valve deposits are removed, repeat
steps 4 and 5.
U n p l u g t h e p a s s a g e i n l e t .
Attach the air intake hose.
Use the scan tool to erase the
code.
10. Adjust the basic idle speed. (Refer to
N O T E If the engine hunts while idling after
of the
basic idle speed, disconnect the cable from the battery
for 10 seconds or more, and then reconnect it and r un
the engine at idle for about
minutes.