Mitsubishi Colt Ralliart. Manual - part 673
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-17
NOTE: The engine warning lamp is caused to flash when the electronic-controlled throttle valve system is
deactivated.
Camshaft position
sensor
• The ECU resumes the conditions having existed before the sensor
malfunction was determined and use them for the subsequent control.
• The ECU cuts fuel supply 4 seconds after detection of the malfunction (only
when the No. 1 cylinder top dead center is not sensed at all after the ignition
switch is turned to ON).
Throttle valve control
microcomputer
The ECU controls the engine output with the electronic-controlled throttle valve
system deactivated.
Alternator FR terminal The ECU prohibits the control in which the alternator output is limited depending
on electric load (as a result, the alternator operates free of such a control).
Throttle valve control
servo
The ECU controls the engine output with the electronic-controlled throttle valve
system deactivated.
Throttle valve position
feedback
The ECU controls the engine output with the electronic-controlled throttle valve
system deactivated.
Accelerator pedal
position sensor (sub)
• The ECU determines the accelerator pedal position using the signals from
the accelerator pedal position sensor (main). However, the pedal stroke
position thus determined is interpreted as approximately a half of the normal
state position.
• The ECU cuts off fuel supply when the engine speed exceeds 3,000 r/min.
• When the accelerator pedal position sensor (main) is also malfunctioning,
the ECU deactivates the electronic-controlled throttle valve system and limits
the engine output to a certain low level.
Manifold absolute
pressure sensor
The ECU performs control assuming a 101 kPa manifold absolute pressure.
Malfunctioning item Control detail
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