1990 MITSUBISHI SPYDER check oil

ENGINE
AND ENGINE> Troubleshootina
Code No. Injector Circuit P r o b a b l e c a u s e
function (Cylinder-l,
[Comment]l Injector failedBackgroundl con-l A surge voltage is generated when the injectors are driven and the current flowing tothe injector coil is shut off.
l Engine control module failed
l The engine control module checks this surge voltage .
Check Areal Engine speed is between and 1000 l Throttle position sensor output voltage is not high er than 1.16 l Monitoring Time: 4
Judgement Criterial Injector coil surge voltage (system voltage V) has not been detected for 4 sec.
Engine (Turbo)>
Check the injector. (Refer to Replace
NGCheck the resister. (Refer to
N GMeasure at the resistor connector l Disconnect the connector, and measure at the harnes s side.Check harness wire between the relay and the
l Voltage between 3 and ground. (Ignition switch: ON) tor. Repair, if necessary.
OK: Battery positive voltage
OK
Measure at the injector connectors lDisconnect the connector, and measure at the harnes s side.
l Voltage between 1 and ground. (Ignition switch: ON)
OK: Battery positive voltage
OK
Check the injector control circuit.
(Refer to INSPECTION PROCEDURE 49.)
Engine> connector:
N G Repair
OK
Check trouble I
NG
Check wire between the the injector connector.Repair, if
Check the injector. (Refer to N G
I Replace
Measure at the injector connector.
l Disconnect the connector, and measure at the harnes s side.
l Voltage between 1 and ground (Ignition switch: ON)
OK: Battery positive voltage
OK
PROCEDURE 49.)
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E N G I N E ( T U R B O ) .
AND ENGINE> ,
Code No. Random Misfire Detected
[Comment]l Ignition system related part(s) BackgroundlIf a misfiring occurs while the engine is running, the engine speed suddenly changes.l
Poor crankshaft sensor l Incorrect air/fuel ratiol The engine control module checks for changes in the engine speed.
l Low compression
Check ArealEngine coolant sensor: l 5 or more have passed after the engine was started. l
liming belt broken
l Engine speed is at between 500 and 6000 l Injector failedl Engine coolant temperature is or higher, l
EGR valve failed
l Intake air temperature is or higherlEngine control l Barometric pressure is 76 (11 psi.) or higher.l Running free from sudden accelerations/deceleration s such as shift change.
Judgement Criteria. .
(change in the angular acceleration of the crankshaft is used for misfire detection.)lMisfire has occurred more frequently than allowed during the last 200 revolutions [when
the catalyst temperature is higher than
orlMisfire has occurred in 20 or more of the last 1000 revolutions (corresponding to 1.5
times the limit of emission standard.) I,
SCAN TOOL Data list
22 Crankshaft position sensor (Refer to
l Crankshaft position sensor wave form check
l Engine speed: stable
OK: Constant pulse range
OK
position sensor and
Check the injector (Refer toNG Replace
Check the fuel trim malfunction (bank 1) (Refer to IN-SPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE
OK
SCAN TOOL list
21 Engine coolant temperature sensor (Refer to
OK
Check the engine coolant temperature circuit malfu nction (Refer
to INSPECTION PROCEDURE FOR DIAGNOSTICTROUBLE CODE 5.)
Check the following items.
l Check the ignition coil, spark plugs, spark plug ca bles.
l Check the compression pressure.
l Check for broken timing belt teeth.
l Check the EGR system and the EGR valve.
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ENGINE (TURBO)
AND ENGINE> Troubleshooting
Code No. Exhaust Gas Recirculation Solenoid cause
Malfunction
[Comment]Backgroundl EGR solenoid lOpen or shorted lThe engine control module checks current flows in t he EGR solenoid circuit whenconnector.the solenoid is on and off.
l Engine control module failed.
Check Area Battery voltage is not lower than 10 V.
Judgement Criteria, ,lSolenoid coil surge voltage (system voltage V) is not detected when the EGR solenoidis turned on/off.
NG
Check the EGR solenoid. (Refer to GROUP Emission
Control System) Engine (Turbo)> (Refer toGROUP17 Emission Control System) Engine>
I
Replace
Measure at the EGR solenoid connector lDisconnect the connector and measure at the harness
l Voltage between 1 and ground (Ignition switch: ON) positive
NG
Repair, if necessary. ,
Disconnect the connector and measure at the harness
Check trouble symptom.
NG
Check the harness wire between ECM and solenoid val ve connector.Repair, if necessary.
Replace the ECM.
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ENGINE (TURBO)
AND ENGINE> Troubleshooting
Code No. Evaporative Emission Control System PurgeProbable
Control Valve Circuit Malfunction
[Comment]
Background
lThe engine control module checks whether current flows in the evaporative emission purgesolenoid drive circuit when the solenoid is driven.
Check Area
Battery voltage is not lower than 10
JudgementlSolenoid coil surge voltage (system voltage 2 V) is not detected when the EVAP purge
solenoid is turned on/off. l
Evaporative emission purge
lOpen or shorted solenoid or Engine control module failed
.
Measure at the ECM
Check the evaporative
l
NG
Disconnect the connector and measure at the harness
side.
l
to GROUP
Voltage between 9 and ground (Ignition switch: ON) Control System.)
OK:
oositive
OK
NG
Measure at the evaporative emission purge
lDisconnect the connector and measure at the harness
side.
l Voltage between 2 and ground (Ignition switch: ON)
OK: Battery positive voltage
Replace
and repair if
. . Check the following con-? R e p a i r
OK
Check trouble symptom.
NG
Check the harness wire between ECM and solenoid val ve Repair, if necessary.
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ENGINE (TURBO)
AND ENGINE> Troubleshooting
Code No. Evaporative Emission Control System Vent Probable cause
Control Malfunction
Engine>
[Comment]l Evaporative emission vent Backgroundl Open or shortedevaporativelThe engine control module checks current flows in t he evaporative emission ventilation
solenoid circuit, or loose connector.
solenoid drive circuit when the solenoid is ON and OFF
l Engine control module failed.
Check Area voltage is not lower than V.
Judgement CriterialSolenoid coil surge voltage (system voltage is not detected when the Evaporative
emission vent solenoid is turned on/off.
Check the evaporative emission ventilation solenoid (Refer to
GROUP 17
Emission Control System)
Check the harness wire between relay and
Measure at the ECM connector lDisconnect the connector and measure at the harness side.
l Voltage between 55 and ground
(Ignition switch: ON)
OK: Batten/ positive
OK
c o n n e c t o r . R e p a i r , i f n e c e s s a r y .
NG Check NG
O K
Check trouble symptom.
NG
Check the harness wire between ECM and connec-tor. Repair, if necessary.
Check trouble symptom. Replace the ECM.
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ENGINE (TURBO)
AND
Code No. Turbocharger Waste Gate Solenoid
Malfunction
Engine (Turbo)>
Probable cause
[Comment]l Turbocharger waste gate solenoid BackgroundlThe engine control module checks current flows in t he turbocharger waste gate solenoidl loose connector.
drive circuit when the solenoid is ON and OFF. l Engine control module failed.
Check Areal Battery voltage is not lower than 10 V.
Judgement CriterialSolenoid coil surge voltage (system voltage V) is not detected when the turbochargerwaste gate solenoid is turned on/off.
Check the turbocharger
NG
(Refer to GROUP 15 On-vehicleService.) Replace
OK
Measure at the turbocharger waste gate pressure sol enoidconnectorlDisconnect the connector and measure at the harnessRepair, if necessary.
.
side.l Voltage between 2 and ground (Ignition switch: ON)
OK: Battery positive voltage
Measureat the ECM connector lDisconnect the connectorand measure at the harness
- 1 N G
Check the following con- Repair A-l 00
lVoltage between 11 and ground (Ignition switch: ON)
OK: Battery positive voltageOK
Check trouble symptom.
NG
,
RepairCheck the harness wire between ECM and Repair, if
Check trouble symptom.
N G
[Replace the ECM. ,
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ENGINE (TURBO)
AND ,
Code No. Fuel Pressure Solenoid Malfunction
Engine
BackgroundlThe engine control module checks current flows in the fuel pressure solenoid drive circuitwhen the solenoid is on and off.
Check Area l Battery voltage is not lower than 10 V.
Judgement
lSolenoid coil surge voltage (system voltage 2 V) is not detected when the fuel pressuresolenoid is turned on/off.
Probablecause
l Fuel pressure solenoid lOpen or shorted fuel pressure or loose connector
l E n g i n e
. .
Check the fuel press Replace
OK
Measure at the fuel pressure solenoid connector lDisconnect the connector and measure at the harness
side.
l Voltaae between 1 and (Ignition switch: ON)
. . . . if I
OK: positive voltage.
OK
Check trouble
NG
Check the wire between and Repair, necessary.
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(TURBO)
AND ENGINE> Troubleshooting
Code No. Generator Terminal Circuit Malfunction
[Comment]
Background
lWhen the generator field coil is controlled, the generator terminal inputs a signal to
the engine control module.
lThe engine control module detects the generator out put with the input signal, and controlsthe idle air control motor according to the generator output.
Check Area
l Engine speed is higher than 50
Judgement CriterialInput voltage from the generator terminal has continued to be not lower than 4.5 for 20 sec.
Measure at the generator connector
l Connect the connector.
l Voltage between 4 and ground
Engine: Idle
Radiator fan: stopped
Headlight: off
on
Stop Lamp: off on
Rear defogger switch: off on
OK: voltage drops
NG
Measure at the generator connector lDisconnect the connector, and measure at the harnes s side.
l Voltage between 4 and ground (Ignition switch: ON)
O K :
Probable cause
lOpen circuit in generator terminal circuitl Enginecontrol module failed
,
Replace the ECM.
,
. ,
Check trouble symptom.
NG
NG
Repairbetween theECMand the
OK
connector:
NG Repair
OK
Check trouble symptom. generator
NG
Check the NG Repair Replace the ECM.I
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Replace the generator.1
Code No. Serial Communication Link Malfunction
Probable cause
(with
[Comment]l Automatic transaxle control system Backgroundl Open or short circuit in communication linelThe engine control module receives message signals from the transaxle control modulebetween engine module and transaxlevia the communication line. control module, or poor connector contactlThe engine control module monitors abnormalities in message signals resulting froml
Transaxle control module failed.
a broken communication line or transaxle control mo dule problems.l Engine control module failed.
Check Areal 2 seconds or more have passed since starting was co mpleted.
Judgement CriterialAbnormality in communication line (TCM to ECM) with transaxle control module l Problem with transaxle control module (TCM).