Mitsubishi FUEL Manual page 204

13I-10
Malfunctioning item
Accelerator pedal position sen-
sor (1st channel)
Throttle position sensor (1st
channel)
Electronic-controlled
valve system
Throttle valve position feed-
back
Communication line between
the throttle valve controller and
the engine-ECU <M/T> or
engine-A/T-ECU <A/T>
Throttle valve control servo
motor (Motor 1st phase
malfunction)
Throttle valve control servo
motor (Motor 2nd phase
malfunction)
Misfiring
NOTE
If the electronic-controlled throttle valve system is suspended, the engine warning lamp will illuminate.
GDI -
Control contents during malfunction
1. Suspends lean burn operation.
2. Controls the throttle valve position by using signals from the accelerator pedal
position sensor (2nd channel). (However, this control is not applicable if the
voltage difference between the accelerator pedal position sensor (1st channel)
and accelerator pedal position sensor (2nd channel) is 1.0 V or higher.)
3. Also suspends the electronic-controlled throttle valve system when the
accelerator pedal position sensor (2nd channel) is defective.
1. Suspends lean burn operation.
2. Controls throttle opening angle feedback by using signals from throttle position
sensor (2nd channel). (However, the controlling system is not applied when
the throttle position sensor (1st channel) and throttle position sensor (2nd
channel) combination output voltage is outside 4 - 6 V.)
3. Refrains from controlling the throttle opening angle feedback when throttle
position sensor (2nd channel) is also defective.
throttle 1. Suspends the electronic controlled throttle valve system.
2. Suspends lean burn operation.
3. Suspends the idle speed feedback control.
1. Suspends the electronic controlled throttle valve system.
2. Suspends lean burn operation.
3. Suspends the engine speed feedback control.
1. Communication error between the throttle valve controller and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>:
D Suspends lean burn operation.
D Cuts the fuel supply when the engine speed reaches 3,000 r/min or more.
D Suspends the cruise-control.
2. Communication error between the throttle valve controller and the engine-ECU
<M/T> or engine-A/T-ECU <A/T>:
D Suspends lean burn operation.
D Cuts the fuel supply when the engine speed reaches 3,000 r/min or more.
D Suspends the cruise-control.
D The throttle valve controller controls the throttle valve opening angle by
using signals from accelerator pedal position sensor (2nd channel).
Disables lean-mixture combustion.
1. Disables the electronic-controlled throttle valve system.
2. Disables lean-mixture combustion.
3. Disables idle engine speed feedback control.
If the detected misfiring causes damage to the catalyst, the misfiring cylinder will be
shut down.
Troubleshooting