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)

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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

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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

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

ON-BOARD DIAGNOSTICS

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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