Mitsubishi MOTORS Colt 2000, Дополнение к руководству по ремонту

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MPI <4G1> -
Troubleshooting
13A-8
FAIL-SAFE FUNCTION REFERENCE TABLE
When the main sensor malfunctions are detected by the diagnosis function, the vehicle is controlled
by means of the pre-set control logic to maintain safe conditions for driving.
Malfunctioning item Control contents during malfunction
Vacuum sensor 1. Uses the throttle position sensor signal and engine speed signal (crank angle sensor
signal) to take reading of the basic injector drive time and basic ignition timing from
the pre-set mapping.
2. Fixes the ISC servo in the appointed position so idle control is not performed.
Intake air temperature
sensor
Controls as if the intake air temperature is 45 _ C.
Throttle position sen-
sor (TPS)
No increase in fuel injection amount during acceleration due to the throttle position sensor
signal.
Engine coolant tem-
perature sensor
Controls as if the engine coolant temperature is 80 _ C.
Camshaft position
sensor
Injects fuel into the cylinders in the order 1-3-4-2 with irregular timing. (After the ignition switch
is turned to ON, the No. 1 cylinder top dead centre is not detected at all.)
Detonation sensor Switches the ignition timing from ignition timing for super petrol to ignition timing for standard
petrol.
Oxygen sensor (front) Air/fuel ratio feedback control (closed loop control) is not performed.
Oxygen sensor (rear) Performs the feedback control (closed loop control) of the air/fuel ratio by using only the
signal of the oxygen sensor (front) installed on the front of the catalytic converter.
Misfire detection The engine-ECU stops supplying fuel to the cylinder with the highest misfiring rate if a
misfiring that could damage the catalytic converter is detected.