Mpi MITSUBISHI ECLIPSE 1991 Owner's Manual

14-20FUEL SYSTEM - Troubleshootinn
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FUEL SYSTEM - Troubleshooting14-21
2.0L DOHC Engine (Non-Turbo)-_
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2.0L DOHC Engine (Turbo)
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FUEL SYSTEM - Troubleshooting
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FUEL SYSTEM - TroubleshootingM-35
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14-36FUEL SYSTEM - Trotibleshooting
2.0L DOHC Engine (Turbo)
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MPICONTROLUNIT
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FUEL SYSTEM - Troubleshooting
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MPICONTROLRELAY
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IL SYSTEM -MPI Svstem InsDection 4.8L Enaine>14-56FUE- _ ~-~~~~~ ~~ ~,~.
MPI SYSTEM INSPECTION <1.8L Engine>COMPONENTS
LncAT’n”’Ignition timing adjustment terminal
Fuel
ourno check terminal
Nl4PAAMAir-flow sensor
Intake air temperature sensor
Barometric pressuresensorCoolant temperature
sensornhibitor switch (A/T)
Inhibitor switch
-xT==-TL--==- IOlAO422
/Pxygen sensor

FUEL SYSTEM - MPI System Inspection <1.8L Engine>
EGR control solenoid valve
[Calif. only]Purge control solenoid valve
Purge control
-/Y solenoid valve_
ISC servo.Idle Dositionswitch, MPS
Crankshaft angle sensor, TDC sensor
EGR temperature sensor
[Calif. only]
Y-4
16A0802 \
)n ject 0 r 1ture sensor
\I/OlA0407
@Power
steermg fluld pressure switch
ressure switch

14-58FUEL SYSTEM -MPI System Inspection <1.8L Engine>
MALFUNCTION INDICATOR LIGHTNWQAB
Among the self-diagnosis items, a malfunction indicator light
comes on to notify the driver of the emission control items
when an irregularity is detected.
However, when an irregular signal returns to
notmal ‘and the
engine control unit judges that it has returned to normal, the
malfunction indicator light goes out.
Moreover, when the ignition switch is turned off, the light goes
out. Even if the ignition switch is turned on again, the light doesnot come on until the irregularity is detected.
Here, immediately after the ignition switch is turn on, the
malfunction indicator light is lit for 5 seconds to indicate that
the malfunction indicator light operates normally.
Items indicated by the lightening malfunction light
Engine control unit
Oxygen sensor
Air-flow sensor
Intake air temperature sensor
Throttle position sensor
Motor position sensor
Engine coolant temperature sensor
Crank angle sensor
No. 1 cylinder TDC sensor
Barometric pressure sensor
Ignition timing adjustment signal
Injector
Fuel pump
EGR system Caution
The malfunction indicator light lights up when the ignition
timing adjustment terminal is short-circuited
,‘t’o ground.
Consequently, it lights up ,when the ignition timing
adjustment is grounded when adjusting ignition timing,
but in this case there is no abnormality.
MALFUNCTION INDICATOR LIGHT INSPECTlON
When turning on the ignition switch, check that the light comes
on.
NOTElf the light does not come on, check the harness and light for
breakage.SELF-DIAGNOSIS
Nl4PMFaThe engine control unit monitors the input/output signals
(some signals at all times and the others under specified
conditions) of the engine control unit.