Mitsubishi Outlander (2003+). Manual - part 37
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-11
NOTE: If malfunctions have been detected in multi-
ple systems, store one malfunction only, which has
been detected first.
READINESS TEST STATUS
The engine-ECU monitors the following main diagno-
sis items, judges if these items are in good condition
or not, and the stores its history. this history can be
read out by using MUT-II. (If the ECU has judged a
item before, the MUT-II displays "Complete").
In addition, if diagnosis codes are erased or the bat-
tery cable is disconnected, this history will also be
erased (the memory will be reset).
Catalyst: P0420
Oxygen sensor: P0130
Oxygen sensor heater: P0135, P0141
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.
88
Fuel control condition
Open loop
OL
Closed loop
CL
Open loop owing to drive condition
OL-DRV.
Open loop owing to system malfunction
OL-SYS.
Closed loop based on one oxygen sensor
CL- H02S
87
Calculation load value
%
Diagnosis code during data recording
-
Item No.
Data
Unit
Malfunctioning item
Control contents during malfunction
Air flow 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 idle speed control servo in the appointed position so idle control is not
performed.
Intake air temperature
sensor
Controls as if the intake air temperature is 25
C.
Barometric pressure
sensor
Controls as if the barometric pressure is 101 kPa.
Throttle position sensor No increase in fuel injection amount during acceleration due to the throttle position
sensor signal.
Engine coolant
temperature sensor
Controls as if the engine coolant temperature is 80
C.
Camshaft position
sensor
Injectors fuel into the cylinders in the order 1-3-4-2 with irregular timing. (After the
ignition switch is turned to the "ON" position, the No. 1 cylinder top dead centre is
not detected at all)
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 (front) installed on the front of the catalytic converter.
Detonation sensor
Fixes the ignition timing as that for regular gasoline.