1990 MITSUBISHI SPYDER Service Repair Manual

bonnet technical data power steering set clock coolant temperature glove box

Page 537 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE (TURBO)
AND
ENGINE> Troubleshooting
DIAGNOSTIC BY TEST
(INCREASED SENSITIVITY)
When mode II is selected using the MUT-II, the chec k
engine/malfunction indicator lamp ill

Page 538 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE
A N D E N G I N E > .
FAIL-SAFE/BACKUP FUNCTION TABLE
When the main sensor malfunctions are by the diagnostic test mode, the vehicle is controlled
by means of the fol

ENGINE
A N D E N G I N E > .
FAIL-SAFE/BACKUP FUNCTION TABLE
When the main sensor malfunctions are by the diagnostic test mode, the vehicle is controlled
by means of the following defaults.
Malfunctioning item Control contents during malfunct ion
Volume air flow sensor
1. Uses the throttle position sensor signal and eng ine speed signal (crankshaft position
sensor signal) for basic injector drive timing and basic ignition timing from the
2. motor in the appointed position so idle air contro l is not performed.
Intake air temperature
Controls as if the intake air temperature is
sensor
Throttle position
sensor (TPS)
Engine coolant
temperaturesensor
Camshaft position
sensor
Barometric pressure
sensor
Knock sensor
Engine (Turbo)>
Ignition coil, power
transistor unit
Heated oxygen sensor
Heated oxygen sensor
Misfire detection
Turbocharger waste
gate actuator Engine
terminal Performs the closed loop control of the air/fuel ra
tio by using only the signal of the heated
oxygen sensor (front) installed on the front side o f the catalytic converter.
The ECM stops supplying fuel to the cylinder with t he highest misfiring rate if a misfiring that
could damage the catalytic converter is detected.
Shuts off fuel in case of overcharge.
Does not restrict the generator output with respect to electrical load.
No increase in fuel amount during acceleration due to the unreliable throttle position
sensor signal.
Controls as if the ‘engine coolant temperature is
fuel into the cylinders in the order with irregular timing.
(After the ignition switch is turned to ON, the No. 1 cylinder top dead center is not de-
tected at all.)
off the fuel supply 4 seconds after a problem is d etected.
(After the ignition switch is turned to ON, the No. 1 cylinder top dead center is not de-
tected at all.)
Controls as if the barometric pressure is 101
(30 (sea level).
Switches the ignition timing from ignition timing f or high octane to ignition timing for standard
octane fuel.
Cuts off the fuel supply to cylinders with an abnor mal ignition signal.
Air/fuel ratio closed loop control is not performed
TSB Revision

Page 539 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE (TURBO)
AND
ENGINE> Troubleshooting
INSPECTION CHART FOR DIAGNOSTIC TROUBLE CODES (FAULT TREE)
DTC No.Diagnostic items Check items (Remedy) MemoryRefer-
,
00Volume air flow

ENGINE (TURBO)
AND
ENGINE> Troubleshooting
INSPECTION CHART FOR DIAGNOSTIC TROUBLE CODES (FAULT TREE)
DTC No.Diagnostic items Check items (Remedy) MemoryRefer-
,
00Volume air flow circuit malfunctionl Harness and connector
R e t a i n e d
(If harness and connector are not
defective, replace volume air flow
sensor assembly.)
Barometric pressurel Harness and connector
‘ R e t a i n e d
circuit malfunction(If harness and connector are not
defective, replace volume air ,
sensor assembly.)
Intake air temperature circuit l Harness and connector R e t a i n e d
functionlIntake air temperature sensor
Engine coolant temperature circuitl Harness and connector
Retained
malfunctionl Engine coolant
20Throttle position circuit malfunctionl Harness and connector R e t a i n e dl Throttle position sensor
l Closed throttle posit& switch
25
30
‘0136
‘0141
‘0170
Excessive time to enter closed sensor (front) R e t a i n e d
Loop Fuel Control*l sensor harness and connector
I n j e c t o r
sensor circuit malfunction (Bankl
Harness and connector R e t a i n e d
1 Sensor 1)(If harness and connector are not
d e f e c t i v e , r e p l a c e
s e n s o r
(front).)
sensor heater circuit malfunctionl Harness and connector R e t a i n e d
(Bank 1 Sensor 1) sensor (front)
sensor circuit malfunction (Bankl Harness and connector R e t a i n e d
1 Sensor 2) sensor (rear)
sensor heater circuit malfunctionl
Harness and connector R e t a i n e d
(Bank 1 Sensor 2)l sensor (rear) heater
Fuel trim malfunctionl
V o l u m e a i r f l o w s e n s o r o u t p u t R e t a i n e d
(Bank 1)frequency
I n j e c t o r
l F u e l p r e s s u r e
l I n t a k e a i r l e a k s
lEngine coolant temperature sensorlIntake air temperature sensor
l Barometric pressure sensor
S e n s o r
l Exhaust manifold
‘0201 Injector circuit malfunction Cylinderl
Harness and connector R e t a i n e d
1 I n j e c t o r
‘0202Injector circuit malfunction Cylinder
2
‘0203Injector circuit malfunction Cylinder.
3
‘0204Injector circuit malfunction CylinderlHarness and connector R e t a i n e d
4Injector
TSB Revision

Page 540 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE (TURBO)
AND ENGINE> Troubleshooting
DTC No.Diagnostic itemsCheck items (Remedy}
page
Random misfire
detected*
Cylinder 1 misfire
detected*
Cylinder 2 misfire
detected*
Cylinder

ENGINE (TURBO)
AND ENGINE> Troubleshooting
DTC No.Diagnostic itemsCheck items (Remedy}
page
Random misfire
detected*
Cylinder 1 misfire
detected*
Cylinder 2 misfire
detected*
Cylinder 3 misfire
detected*
Cylinder 4 misfire
detected*
Knock sensor 1 circuit malfunction
Engine (Turbo)>
Crankshaft position sensor circuit
malfunction
lIgnition coil Retained 74
Ignition power transistor
l Spark plug
R e t a i n e d Ignition circuit
I n j e c t o r
S e n s o r
Compression pressure I,
l
Timing belt
l Crankshaft position sensor
l Air intake
Fuel pressure
l Crankshaft position sensor circuit
and connector
l Harness and connector R e t a i n e d
(If harness and connector are not
defective, replace knock sensor.),
l Harness and connector R e t a i n e d
(If harness and connector are not
defective, replace crankshaft
tion sensor.)
Camshaft position sensor circuit l Harness and connector R e t a i n e d
function(If harness and connector are not defective, replace camshaft position
sensor.),
‘0400
‘0420
Exhaust gas recirculation flow
function
Exhaust gas recirculation solenoid
malfunction
Catalyst system efficiency below
threshold (Bankl) l
Harness and connector R e t a i n e d
l
EGR valve
l E G R s o l e n o i d
valve control vacuum ,
l Manifold differential, pressure sen-
sor
l Harness and connector
l EGR solenoid
l E x h a u s t m a n i f o l d ( R e p l a c e t h e R e t a i n e d
catalytic converter if there is no
cracks)
‘0440Evaporative emission control l Harness and connector R e t a i n e d
malfunction Engine (Turbo)>l
Evaporative emission purge Sole-
noid
l Purge control valve
l Vacuum hoses routing
‘0442
‘0443
‘0446
Evaporative emission control l Harness and connector R e t a i n e d
leak detected l
Evaporative emission purge
s o l e n o i d
l Evaporative emission ventilation
solenoidlVacuum hoses routing
Evaporative emission control system
l Harness and connector Retained
purge control valve circuit malfunc-l
Evaporative emission purgetion solenoid .
Evaporative emission control systeml
Harness and connector R e t a i n e d
vent control malfunction l
Evaporative emission ventilation..
solenoid
TSB Revision

Page 541 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE (TURBO)
AND
ENGINE> Troubleshooting
DTC No.Diagnostic items Check items (Remedy)MemoryRefer-
; ,
Evaporative emission control systeml Harness and connector
Retained
pressure sen

ENGINE (TURBO)
AND
ENGINE> Troubleshooting
DTC No.Diagnostic items Check items (Remedy)MemoryRefer-
; ,
Evaporative emission control systeml Harness and connector
Retained
pressure sensor malfunctionl
Engine>F u e l t a n k d i f f e r e n t i a l p r e s s u r e
sensor
Vehicle speed sensorl Harness and connectormalfunctionl Vehicle speed sensor Retained
Idle control systeml
Harness and connector
RetainedmalfunctionlIdle air control motor
Closed throttle position switch mal-e Harness and connector Retained
functionlClosed throttle position switch
Power steering pressure sensor l Harness and connector
Retained
range/performancelPower steering pressure switch
Transaxle range sensor circuit mal-e Harness and connector Retainedfunction Input)lPark/neutral position switch
Turbocharger waste gate actuatorl Harness and connector
Retained
malfunctionl Turbocharger waste gate solenoid
Engine (Turbo)>l Turbocharger waste gate actuator ,
lVacuum hose routing
Turbocharger waste gate solenoidl Harness and connector Retained
malfunctionl Turbocharger waste gate solenoid
Engine (Turbo)>
Fuel pressure solenoid malfunctionl Harness and connector
Retained
Engine (Turbo)>lFuel pressure solenoid
Manifold differential pressure (MDP)l Harness and connector Retainedsensorcircuitl
MDP sensormalfunction
Pi 500Generator terminal
circuit malfunctionlHarness and connector
Serial communication link
tion
l Harness and connector R e t a i n e d
‘1750
‘1791PG assy malfunction
l
Harness and connector RetainedlPulse generator
Solenoid assy malfunction
l Harness and connector Retained
l
Converter clutch solenoid
l Shift control solenoid
lPressure control solenoid
Engine coolant temperature level in-
lHarness and connectorRetained
put circuit (to TCM) malfunction
1. Do not replace theengine control module (ECM) until a thorough termin al check reveals there are
no short/open circuits.
2.After the ECM detects a malfunction, a diagnostic t rouble code is recorded when the engine is next
started and the same malfunction is re-detected. Ho wever, for items marked with a the diagnostic
trouble code is recorded on the first detection of the malfunction.
3.
Heated oxygen sensor
4. Sensor 1: indicates sensors which are mounted cl osest to the engine.
5. Sensor 2: indicates sensors which are mounted ne xt-closest to the engine.
TSB Revision

Page 542 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE (TURBO)
AND ENGINE> Troubleshooting
Code No. Volume Air Flow Circuit Malfunction
[Comment]Background
lWhile the engine is running, the volume air flow se nsor outputs a

Page 543 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE ( T U R B O )
AND ENGINE> Troubleshooting
Code No. Barometric Pressure Malfunction Probable cause ,
[ C o m m e n t ]BackgroundlThe barometric pressure sensor outputs a voltage wh
ich

Page 544 of 2103

MITSUBISHI SPYDER 1990 Service Repair Manual ENGINE (TURBO)
AND ENGINE> Troubleshooting,
Code No. Intake Air Temperature Circuit
[Comment]
Background
lThe intake air temperature sensor converts the intake air temperature to a voltag

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