Mitsubishi Outlander XL. Manual — part 1250

A/C COMPRESSOR RELAY CONTROL

M21302000345USA0000010000

ZK602522

OFF

ON

AA00

R

IG2

ST

LOCK

ACC

IG1

A/C-ECU

CAN communication

ECM

Battery

Ignition switch

A/C compressor relay

A/C compressor

A/C
refrigerant
temperature
switch

A/C compressor
relay control

Magnetic
clutch

The ECM turns on the power transistor when the A/C
switch ON signal is input by the A/C-ECU through the
CAN. This allows the A/C compressor relay to be ON
and to be operated. During the high load operation,

such as the acceleration with the fully opened
accelerator, the ECM secures the acceleration
capability by turning off the A/C compressor relay for
the specified period to produce no load on the A/C
compressor.

13A-48

MULTIPORT FUEL SYSTEM (MFI)

GENERATOR CONTROL

GENERATOR CONTROL

M21302000250USA0000010000

ZK600303AA01

Engine coolant temperature sensor

Generator G terminal

Generator FR terminal

Generator

Crankshaft position sensor

A/C switch (CAN)

Ignition switch-ST

ECM

During engine idle operation, ECM controls duty of
conduction between generator G terminal and
ground. (G terminal duty is controlled to be the same
as ON duty of the power transistor inside the voltage
regulator). If headlights etc. are turned on while
engine is idling, the consumed current increases

suddenly, but by gradually increasing the generator G
terminal OFF duty, ECM restricts sudden increase in
generator's output current and output current is
increased only gradually. (Battery current is supplied
to the headlamp etc. till generator produces sufficient
current.) Thus, ECM prevents change in idle speed
due to sudden increase of engine load.

EVAPORATIVE EMISSION PURGE CONTROL

M21302000120USA0000010000

Refer to GROUP 17 - Emission Control - Evaporative Emission
Control System P.17c-5.

EXHAUST GAS RECIRCULATION CONTROL

M21302000160USA0000010000

Refer to GROUP 17 - Emission Control - Exhaust Gas
Recirculation System P.17c-7.

CONTROLLER AREA NETWORK (CAN)

M21302000190USA0000010000

CAN communication is established to ensure the
reliable transmission of information. Refer to GROUP

54D - Controller Area Network (CAN) - General
Information P.54D-2.

MULTIPORT FUEL SYSTEM (MFI)

13A-49

EVAPORATIVE EMISSION PURGE CONTROL

EVAPORATIVE EMISSION CONTROL SYSTEM INCORRECT PURGE FLOW MONITOR

M21302000353USA0000010000

ZK602758

Battery

Mass airflow sensor

Barometric pressure
sensor

Intake air temperature
sensor

Engine coolant
temperature sensor

Fuel level sensor (CAN)

Fuel tank differential pressure sensor

Fuel tank temperature sensor

MFI relay

ECM

To
injector

Evaporative emission
purge solenoid

Evaporative
emission
ventilation
solenoid

Fuel tank

Fuel level
sensor

AA00

The ECM detects whether the fuel vapor leakage
exists or not from the evaporative emission control
system. By the specified pattern within the certain
operation range, the ECM drives the evaporative
emission purge solenoid and the evaporative

emission ventilation solenoid. This allows slight
vacuum to be produced in the fuel tank.
The ECM measures the vacuum condition through the
fuel tank differential pressure sensor signal. By
comparing the normal (expected) value and the actual
value, the ECM detects whether the fuel vapor
leakage exists or not from the evaporative emission
control system.

HC TRAP CATALYTIC CONVERTER

DETERIORATION MONITOR

M21302000354USA0000010000

Refer to GROUP 17 - Emission Control - Emission Reduction
System P.17c-9.

ON-BOARD DIAGNOSTICS

M21302000090USA0000010000

The engine control module (ECM) has been provided
with the following functions for easier system
inspection.

13A-50

MULTIPORT FUEL SYSTEM (MFI)

HC TRAP CATALYTIC CONVERTER DETERIORATION MONITOR

Diagnostic Trouble Codes and Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine
Lamp) Function

The diagnostic trouble code and malfunction indicator
lamp (SERVICE ENGINE SOON or Check Engine
Lamp) items are shown in the following table.

NOTE:

*1: Diagnostic Trouble Code

NOTE:

*2: Malfunction Indicator Lamp

DTC*1

DIAGNOSTIC ITEM

MIL*2ITEM

-

Engine control module (ECM)

×

P0031

Heated oxygen sensor heater circuit low (bank 1 sensor 1)

×

P0032

Heated oxygen sensor heater circuit high (bank 1 sensor 1)

×

P0037

Heated oxygen sensor heater circuit low (bank 1 sensor 2)

×

P0038

Heated oxygen sensor heater circuit high (bank 1 sensor 2)

×

P0043

Heated oxygen sensor heater circuit low (bank 1 sensor 3) <California>

×

P0044

Heated oxygen sensor heater circuit high (bank 1 sensor 3) <California>

×

P0051

Heated oxygen sensor heater circuit low (bank 2 sensor 1)

×

P0052

Heated oxygen sensor heater circuit high (bank 2 sensor 1)

×

P0057

Heated oxygen sensor heater circuit low (bank 2 sensor 2)

×

P0058

Heated oxygen sensor heater circuit high (bank 2 sensor 2)

×

P0069

Abnormal correlation between manifold absolute pressure sensor and
barometric pressure sensor

×

P0101

Mass airflow circuit range/performance problem

×

P0102

Mass airflow circuit low input

×

P0103

Mass airflow circuit high input

×

P0106

Manifold absolute pressure circuit range/performance problem

×

P0107

Manifold absolute pressure circuit low input

×

P0108

Manifold absolute pressure circuit high input

×

P0111

Intake air temperature circuit range/performance problem

×

P0112

Intake air temperature circuit low input

×

P0113

Intake air temperature circuit high input

×

P0116

Engine coolant temperature circuit range/performance problem

×

P0117

Engine coolant temperature circuit low input

×

P0118

Engine coolant temperature circuit high input

×

P0122

Throttle position sensor (main) circuit low input

×

P0123

Throttle position sensor (main) circuit high input

×

P0125

Insufficient coolant temperature for closed loop fuel control

×

P0128

Coolant thermostat (Coolant temperature below thermostat regulating
temperature)

×

MULTIPORT FUEL SYSTEM (MFI)

13A-51

ON-BOARD DIAGNOSTICS