MITSUBISHI SPYDER 1990 Service Repair Manual

ENGINE (TURBO)
AND
ENGINE> General
Engine>
ItemSpecifications
Throttle body Throttle bore mm (in.)54 (2.13)
Throttle position sensorV a r i a b l e r e s i s t o r t y p e
Idle air control motor
DC motor type [DC by-pass air control system
with the fast idle air
Closed throttle position switch
Rotary contact type, within throttle position senso r
Idle air control valve position sensor
Hall element type
Engine control Identification model No.
module (ECM)
SensorsVolume air flow sensor Karman vortex type
Barometric pressure sensorSemiconductor type.
Intake air temperature sensorThermistor type
Engine coolant temperature sensor Thermistor type
Heated oxygen sensor Zircon type
Vehicle speed sensor Electromagnetic resistance element type
Park/neutral position switch Contact switch type
Camshaft position sensor Hall element type
Crankshaft position sensor Hall element type
Power steering pressure switch Contact type
fuel injection (MFI) relay Contact switch type
Fuel pump relay Contact switch type
Fuel pump relay module Electronic control module typ e
Injector type and number Electromagnetic type, 4
Injector identification mark
,
solenoid Duty cycle type solenoid valve
Evaporative emission purge solenoid
Duty cycle type solenoid valve
pressure Regulator (psi)335 (48)
egulator
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E N G I N E ( T U R B O )
AND
ENGINE> General . .
MULTI-PORT FUEL INJECTION SYSTEM DIAGRAM
Engine (Turbo)>
Heated oxygen sensor(front) Volume air flow sensor Intake air temperaturesensor Throttle position sensor Closed throttle positionswitch Camshaft position sensor Crankshaft position sen-sor Barometric pressure sen-sor Engine coolant tempera- ture sensor
Knock sensor Heated oxygen sensor(rear) differential pres-
sure sensor
Power supply
l Vehicle speed sensor
l
switch
l Park/neutral position
switch
Power steering pressureswitch Ignition switch ST
Enginecontrol Injector . Fuel pump
Evaporative emission l injectionpurge relay Idle air control motor lA/Ccompressor solenoid clutch relay Fuel pressure sole-
l C h e c knoide T u r b o c h a r g e r lampg a t e Diagnostic output I g n i t i o n c o i l , i g n i t i o n cower transistor
,
Evaporative
emission
canister
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Manifold differential s e n s o r
IIion. .
Intake air
temperature
sensor
Volume air flow
sensor . insure sensor) IIpres:
Engine coolant temperature sensor
Turbocharger waste gate solenoid TC waste
gate actuator
Knock sensor
Heated oxygen
sensor (rear)
Heated oxygensensor (front)

ENGINE (TURBO)
AND ENGINE> General lnformaiton
Engine>
Heated oxygen sensor Power supply(front)l Vehicle speed sensor Volume air flow sensor l switch Intake air temperature Park/neutral positionsensorswitch Throttle position sensor Power steering pressure Closed throttle positionswitch
switchl Ignition switch ST Camshaft position sensor Crankshaft position sen-sor Barometric pressure sen-sor Engine coolant tempera-
ture sensor
valve position sensor Heated oxygen sensor(rear) Manifold differential pres-sure sensor tank differential pres-
sure sensor
,
Engine control Injector l
Fuel pump relay Evaporative emission lFuel pump relay purge solenoid air control motor injection EGR solenoid relay Evaporative emission l ventilation solenoid clutch relay
l C h e c k
o u t p u t coil, ignition
T h r o t t l e s e n s o r ,
control
Intake air
t e m p e r a t u r e
. . . sensor pressure
a
temperature sensor EGR
solenoidHeated oxygen
Fuel tank pressure
sensor (rear) Heated oxygen
Evaporativeemission canisterFuel tank
Crankshaft position sensor
Camshaft positionsensor
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ENGINE (TURBO)
AND
ENGINE> S e r v i c e
S t a n d a r d v a l u e
Basic at curb idle ,
Curb idle
speed when A/C is ON 850 100 in Neutral
Basic idle speed
750 50
Throttle position sensor adjusting voltage
Throttle position sensor resistance
400 1,000
3.5 6.5
Idle air control motor coil resistance 28 33 [at
Intake air temperature sensor
resistance2.3 3.0,
0.30 0.42
Engine coolant temperature sensor
resistance2.1 2.7
0.26 0.36
Heated oxygen sensor output voltage
0.6 1
Fuel pressure (psi) Vacuum hose disconnected289 309 (42 45) at curb idle Engine (Turbo)>
330
350 (47 50) at curb idle Engine>
Injector coil resistance
solenoid coil resistance
Vacuum hose Approx. 230 (33) at curb idle Engine (Turbo)>
connected Approx. 270 (38) at curb idle
Engine>
2
3 [at Engine (Turbo)>
13
16 [at
36 44 [at
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Ivaporative emission purge solenoid coil resistance
pressure solenoid 36 44 [at Engine (Turbo)>
waste gate solenoid 36 44 [at
SEALANT
Item
coolant temperature sensor threaded portion
S p e c i f i e d s e a l a n t
Nut Locking Part No. 4171 or equivalent

E N G I N E ( T U R B O )
AND ENGINE>
Scan tool
Test harness set
Inspection using an analyze
Toolnotavailable
RevisionI

(TURBO)
TROUBLESHOOTINGD I A G N O S T I C
F L O W C H A R T I:-- . ? ’
Verify complaint.
Does not reoccur.
Read the diagnostic trouble code (Refer to Read the diagnostic trouble code (Refer to
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‘Refer to the INSPECTION CHART FOR DIAGNOSTIC
TROUBLE CODES (Refer to
MALFUNCTIONS to GROUP 00 How to Cope with Intermittent

E N G I N E ( T U R B O )
AND
ENGINE>
DIAGNOSTIC TEST MODE
CHECK
Among the on-board diagnostic a check
function indicator lamp notify the the
emission control items
‘a malfunction is detected.
an ‘irregular signal to normal
engine control judges, has returned to
the check. indicator lamp is switched
Moreover, when switch is turned off, the
is off. if the switch is turned on again,
the lamp does not is detected.
Here, immediately after the is turned
check engine/malfunction, indicator is for 5
to indicate that the,
o p e r a t e s n o r m a l l y .
Indicated by The Check Engine/Malfunction Indicato r Lamp
00
05
20
30
35
36
41
70
Items
Engine control module
malfunction
Volume air flow circuit malfunction
Barometric
circuit malfunction
Intake air temperature circuit malfunction
Engine coolant temperature circuit malfunction
Throttle position circuit malfunction
Excessive time to enter closed loop fuel control
sensor circuit malfunction (bank 1 sensor 2)
sensor heater circuit malfunction (bank 1 sensor 1 )
sensor circuit (bank 1 sensor 2).
sensor heater circuit, malfunction 1
Fuel trim malfunction (bank 1)
Injector circuit malfunction -cylinder 1
Injector circuit malfunction -cylinder 2
Injector circuit malfunction
cylinder 3
Injector circuit malfunction -cylinder 4
Random misfire detected
Cylinder
misfire detected
Cylinder
2misfire detected
Cylinder 3 misfire detected Cylinder 4 misfire detected
Crankshaft position sensor circuit malfunction
Camshaft position sensor circuit malfunction
Exhaust gas recirculation flow malfunction
Exhaust gas recirculation solenoid malfunction
Catalyst system efficiency below threshold (bank 1) Evaporative emission control system malfunction
Engine (Turbo)>
Evaporative emission control system purge control v alve circuit malfunction
Evaporative emission control system leak detected
Engine>
Evaporative emission control system vent control ma lfunction
Engine>
Evaporative emission control system pressure sensor malfunction
control system malfunction
DTC No.
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ENGINE (TURBO)
AND
ENGINE> Troubleshooting
DTC No.
Closed throttle position switch malfunction
Power steering pressure sensorcircuit range/perfor mance
Transaxle range sensor circuit malfunction (RPNDL Input)
Transaxle fluid temperature sensor circuit malfunct ion
Turbocharger waste gate actuator malfunction Engine (Turbo)>
Turbocharger waste gate solenoid malfunction Engine
Fuel pressure solenoid malfunction Engine (Turbo)>
Manifold differential sensor circuit malfunction
Serial communication link malfunction
PG
malfunction
Solenoid assy malfunction
Enaine coolant temoerature level
circuit (to malfunction
NOTElWhen the ECM monitored mal-
1.After the Engine Control Module (ECM) detects function three times* and detected no
a malfunction, the check engine/malfunction
indicator lamp illuminates when the engine isIn this case, one time indicates from
next turned on and the same malfunction is
start to stop.
re-detected.lFor misfiring or a fuel trim malfunction,
However, for items marked with a the checkdriving conditions (engine speed, engine
engine/malfunction indicator lamp illuminatesant temperature, etc.) are similar to those
on the first detection of the malfunction. the malfunction was first recorded.
2. After the check engine/malfunction indicator
lamp illuminates, it will be switched off under
the following conditions.
Caution,
If the check engine/malfunction indicator lamp illu minates because of a malfunction of the
transmission between the scan tool and the PCM cann ot occur. In this the diagnostic
code cannot be read.
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E N G I N E
AND ENGINE>
ON-BOARD DIAGNOSTICS
The engine control module monitors the input/out-
put signals (some signals at all times and the othe rs
under specified conditions) of the engine control
module.
Whenamalfunction has continued for a specified
time or longer since the irregular signal is initia lly
monitored, the engine control module judges that
a malfunction has occurred.
After the ECM first detects a malfunction, a diagno s-
tic trouble code is recorded when the engine is
restarted and the same malfunction is re-detected.
However, for items marked with a
a diagnostic
trouble code is recorded on the first detection of
the malfunction.
There are 45 diagnostic items, and the diagnostic results can be read out with a scan tool.
Moreover, since memorization of the diagnostic
trouble codes is backed up directly by the battery,
the diagnostic results are memorized even if the ignition key is turned off. The diagnostic trouble
codes will, however, be erased when the battery
terminal or the engine control module connector
is disconnected.
In addition, the diagnostic trouble code can also
be erased by turning the ignition switch to ON and
sending the diagnostic trouble code erase signal
from the scan tool to the engine control module.
Caution
If the sensor connector ‘is disconnected wlth
the’ ignition switch turned on, the diagnostic
trouble code is
In send
the diagnostic trouble code erase to the
engine control module in order to erase the
diagnostic memory.
The 45 diagnostic items are as follows,
and if plural items are activated, they are all ind i-
cated sequentially from the smallest code number.
Caution
The diagnostic trouble code of ignition
adjustment signal is output whenever
for ignition timing adjustment Is grounded.
Therefore, it is not a malfunction that the code
is output when adjusting
The ECM records the diagnostic, trouble code and
the engine operating conditions at the time the
malfunction was detected.’ These are called
“freeze frame” data.
This data indicates the engine operafing condition
from when nothing at all is detected to the initial
detection of malfunction.
This data can be read by using the scan tool, and
can then be used in simulation tests trouble-
shooting. Data items are as follows.,,
Data Unit
Engine coolant temperature.
Engine speed
Vehicle speed
Long-term fuel compensation
(Long-term fuel trim)
Short-term fuel compensation
(Short-term fuel trim)
km/h
Fuel control condition O p e n l o o p
l Closed loop
l Open loop-drive condition
l O p e n
set
l Closed
(rear) failed
Calculation load value
Diagnostic trouble code during data recording
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ENGINE (TURBO)
AND
ENGINE> Troubleshooting
OBD-IIDRIVE CYCLE.
All kinds of diagnostic trouble code can be monitor ed by carrying out a drive test in
with the following six drive cycle patterns. In other words, carrying out such a drive test
to reproduce any kind of which involves causing the check indicator
to illuminate and to check that the repair procedur e has eliminated the trouble that the check
engine/malfunction indicator lamp no longer illumin ates). In other words, doing such a drive allows
regenerate any kind of trouble which involves illuminating the check engine/malfunction indicator lamp
and to check the repair procedure has eliminated th e trouble (the check
indicator
lamp is no more illuminated).
Caution
Make sure that there are two people in the vehicle when
1. Catalytic converter monitor
Test conditions/procedure
1. All of the following conditions should be when the drive test is carried out.
(1) Outside air temperature: or higher
(2)
condition:
Selector lever position: range
l Overdrive switch: ON
lPower/economy changeover switch: Power,
(3) switch: OFF
2. Carry out one trip monitoring according to the f ollowing drive pattern (from’ starting
until ignition is turned off). (Takes approximately 20 minutes.)
the engine and quickly accelerate to a speed of 72 km/h (45 mph) or
Monitor pre-preparation period: drive for seconds or more the vehicle Speed,
at between 72 97 (45
during this period.60 mph). Braking (lasting several seconds) . .,
Decelerate until the vehicle speed is between 56 64 km/h (35 40 mph).
Monitoring period: drive for 90 seconds or more on
a level while maintaining the throttle.
opening angle at a constant angle (keeping throttle variations as small as absolutely possible)
and the vehicle speed at between 56
64 km/h (35 40 mph).
Fully close the throttle to make the vehicle decel erate. (Braking is allowed at this time.)
After the vehicle has been decelerating continuousl y for
seconds, quickly
to a speed of between 56 64 km/h (35 40 mph).
Repeat steps l 4 and
six times. (The procedure in steps and should be
total of six times.)
Decelerate to a stop. After the vehicle has stoppe d, turn the ignition
Drive cycle pattern
300 seconds or more
72 97 km/h (45 60 mph)
eed should not outside specified range.’
Vehicle speed
NOTE:Throttle open-ing angle
0
itch: OFF
Engine startsI I
Fully Fully Fully decelerating decelerating decelerating
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