check engine MITSUBISHI SPYDER 1990 Service Repair Manual

ENGINE (TURBO)
AND
ENGINE>
2. Evaporative emission control system leak monitor
Test conditions/procedure , . .
1. All of the following conditions should be satisfied ‘when the drive test is carried out.
(1) Engine coolant temperature: or lower engine
is stopped) ,
(2) Outside air temperature: or higher, or lower
(3) A/T condition: .
lSelector lever position: range .
l Overdrive switch: ON
l Power/economy changeover switch: Power
2. Carry out one trip monitoring according to the f ollowing drive pattern
until ignition is turned off). (Takes approximately 8 minutes.)
Check that both the engine coolant temperature’ an d air temperature ‘satisfy
in 1. above (when engine is stopped). ,
Monitor pre-preparation period: start the engine and accelerate’ 97
km/h (55 60 mph). Acceleration, deceleration and braking ca n be carried period.
Drive for 60 seconds or more while maintaining the vehicle speed
(55 60 mph). Braking and throttle ‘operations can be carried out this as
the vehicle speed remains within the specified rang e.
Monitoring period: drive for 150 seconds or more w hile maintaining the throttle opening’
at a constant angle (keeping throttle variations as small as absolutely possible) and the vehicle
speed at between 89
97 km/h (55 60 mph). Drive as consistently as possible during this
time, without making any sudden steering wheel’ mov ements.
Decelerate to a stop. After the vehicle has stopped, turn the ignition switch to OFF.
Drive cycle pattern
150 seconds
Vehicle speed
NOTE:Throttle openingangle
or more __ or more
.
(55 60 mph)
Engine starts
1 0 0
50
0
I
‘ignitionswitch: OFF
,
CautionThe shaded areas in theraph indicate times when the vehiclespeed should not go of the specified range.
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ENGINE (TURBO)
AND
ENGINE> T r o u b l e s h o o t i n g
HOW TO READ AND ERASE DIAGNOSTIC TROUBLE
CODES
Caution
1. If battery voltage is ‘low, diagnostic trouble ‘ codes
may not be output, Be sure to check the’ battery
and charging system before continuing.
2.If the battery is disconnected or if the ECM connec tor
is disconnected, the diagnostic trouble
will be erased. Do not disconnect the battery or EC M
until after the diagnostic trouble codes are record ed.
3.Turn the ignition switch off before connecting or d is-
connecting the scan tool.
,
1. Connect the scan tool to the data and
read the diagnostic trouble. codes.
2.Repair the malfunction while the
CHART FOR DIAGNOSTIC ‘CODES.
3. Turn the ignition switch to OFF and then back to ON
again.
4.Erase the diagnostic trouble codes using the scan tool.
5. ‘Check that the diagnostic trouble code is norma l.
INSPECTION USING SCAN TOOL DATA LIST AND ACTUA-
TOR TESTING
1. Carry out inspection by means of the data list a nd the
actuator test function.
If there is a malfunction, check and repair the chassis
harnesses and components.
2.Recheck using the scan tool and check that the malf unc-
tion has been eliminated as a result of the repairs.’
3. Erase the diagnostic trouble code from memory.
4. Remove the scan tool.
5.Start the engine again and carry out a road test to confirm
that the problem has disappeared.
NOTE
Refer to for Data List.
Refer to
for Actuator Tests..
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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 illuminates at the point when
the ECM detects a problem (except if the related
to emissions), and at the same time the correspondi ng
diagnostic trouble codes are stored.
Furthermore, in the case of comprehensive component
electrical faults (opens/shorts), the time from the occurrence
of the fault to the storing of the DTC is compresse d (4 seconds
1 second).
As a result of this, checking of the trouble symptoms
checking after have been completed are both made
easier.
Once mode II has been selected, it is necessary
ignition switch to OFF or to use the MUT-II to
I once more before mode I operation can resumed.
However, all
readiness test and frame
data will be erased after returning to mode
so this
should be recorded beforehand if necessary.
(1) Using the scan tool, changeover the diagnostic test mode
of the engine control module to DIAGNOSTIC TEST
MODE II. (INCREASED SENSITIVITY)
(2) Road test the vehicle.
(3) Read the diagnostic trouble code in the same ma nner
as “READ OUT OF DIAGNOSTIC TROUBLE CODE” and
repair the malfunctioning part.
(4) Turn off the ignition
NOTE
Turning OFF the ignition switch will cause the engi ne
control module to changeover the ECM from the diagn ostic
test mode II to the diagnostic test
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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
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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
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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.
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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 signal which
corresponds to the volume of air flow.
lThe engine control module checks whether the freque ncy of this signal output by the
volume air flow sensor while the engine is running is at or above the set value.
Check Area, Judgement Criteria
1. Check Area
Engine is not lower than 500
Judgement CriterialSensor output frequency has continued to be 3.3 Hz or lower for 4 sec.
2. Check Area l Throttle position sensor voltage is 2
or lower. Engine speed is not higher than 2000
Judgement CriterialSensor freauencv has continued to be 1000 Hz or hiaher fo r 4 sec. EnginelSensor output frequency has continued to be 800 Hz or higher for 4 sec. Engine>
3. Check Area
l Throttle position sensor voltage is 1.5 or higher.
l Engine speed is 2000 or higher.
Judgement CriterialSensor output frequency is Hz or lower for 4 seconds.
Measure at the volume air flow Check the volume air flow sensor
sensor connector A-l 02. circuit. (Refer to
l Connect the connector. (Use PROCEDURE 47.)
the test harness:
1. Voltage between 3 and ground(Engine: idling)OK: 2.2-3.2 2. Voltage between 7 and ground OK: (Engine: idling)
6 - 9
OK
Replace the ECM.
(Ignition switch: ON)
O K : 6 - 9
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Check the following connector
Probable cause
lVolume air, flow lOpen or shorted sensor or loose connector Engine control module failed
Check trouble symptom.
N G
Repair
Replacethevolumeairflowsensor.
, Check trouble
Repair
Replace the ECM.

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 corresponds to the barometricpressure.
Barometric pressure sensor failedlOpen or shorted barometric or loose connectorl Engine control module failedl The engine control module checks whether this volta ge is within a specified range.
Check Area l 60
or more have passed since the starting sequence wa s completed.
l Battery voltage is not lower than 8 V.
Judgement CriterialSensor output voltage has continued to be 4.5 or higher [corresponding to a barometricpressure of 114 (17 psi) or higher] for 4 sec. ,
or
lSensor output voltage has continued to be 1.95 or lower a barometricpressure of 50 (7.4 psi) or lower] for 4 sec.
theECM and the barometric
NGMeasure at the volume air flow
sensor connector
lDisconnect the connector, andmeasure at the harness side.lVoltage between 1 and ground(Ignition switch: ON)
O K :
l Continuity between 5 andground
sor connector l Connect the connector. (Use
the test harness:
lVoltage between 2 and ground(Ignition switch: ON)
OK: 3.7-4.3
[Altitude: 0 (0 ft.)]
[Altitude: 1,200 (3,937
OK
at the ECM 3-56. Connect the connector. Voltage between 85 and ground (Ignition switch: ON)
OK: 3.7-4.3
[Altitude: 0 (0 ft.)]
I
[(Altitude: 1,200 (3,937ii.)]
Continuity
OKsure sensor connector.I
Check the following connector: Repair
A-i
OK
OK
Check trouble symptom.
NG
Replace the ECM.
N GCheck the harness wire between Repairthe ECM and the barometric pres-sure sensor connector.
OKOK
the ECM and the barometric pres- harness wire
sure sensor connector.
Repair
OK
the ECM.
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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 voltage and
outputs it.
l The engine control module checks whether the voltag e is within a specified range.
Check Area
l 60
or more have passed since the starting sequence wa s completed.
Judgement CriterialSensor output voltage has continued to be 4.6 or higher [corresponding to an intake
air temperature of or lower] for 4 sec.
or
lSensor output voltage has continued to be 0.2 or lower [corresponding to an intake
air temperature of or higher] for 4 sec.
l Intake air temperature lOpen or shorted intake circuit, or loose l Engine control
Check the intake air temperature sor. (Refer to Replace the volume air flow sensor.
Measure at the volume air flow sensor
l
l a n d g r o u n d Check the wire between the RepairECM and the intake air temperaturesensor connector.
Replace the ECM.
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ENGINE (TURBO)
AND ENGINE>
Code No. 5 Engine Coolant Temperature Circuit
Malfunction Probable
[Comment]l
Engine coolant temperature BackgroundlOpen shorted engine l theenginecoolanttemperature and outputs it. sensor circuit, or l
The engine control module checks whether the voltag e is within a specified range.l
Engine control module In addition, it checks that the engine coolant temp erature (signal) does not drop while
the engine is warming up.
Check Area, Judgement Criteria
1. Check Area, Judgement Criteria
lSensor output voltage has continued to be 4.6 or higher [corresponding to an enginecoolant temperature of or lower] for 4 sec.
or
lSensor output voltage has continued to be 0.1 or lower [corresponding to an enginecoolant temperature of or higher] for 4 sec.
2. Check Area, Judgement CriterialSensor output voltage increased from a value lower than 1.6 to a value higher than1.6 [Engine coolant temperature decreases from a highe r than temperature to a lower than temperature.]lThen the sensor output voltage has continued to be 1.6 or higher for 5 min.
3. Check Area
lEngine coolant temperature is approximately immediately after engine
is started.
Judgement CriterialAbout 60 300 have passed for the engine coolant temperature to about after starting sequence was completed.
Measure at the engine coolant
temperature sensor connector
l Disconnect the connector, and
measure at the harness side.
l Voltage between 1 and ground
(Ignition switch: ON)
OK:
l Continuity between 2 and ground
OK: Continuity
Check trouble symptom.
NG
Replace the ECM.
Replace the
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