2008 MITSUBISHI LANCER EVOLUTION X heater

GENERAL DESCRIPTION
MULTIPORT FUEL SYSTEM (MFI)13A-5

AK604118
Fuel tank
Fuel level
sensor Air
inlet
2 Exhaust engine
oil control valve
1 Intake engine
oil control valve4 Manifold absolute pressure sensor
2 Intake air
temperature sensor
1 Mass airflow sensor
6 Intake
camshaft
position
sensor
7 Exhaust
camshaft
position
sensor
3 Throttle position
sensor (main/sub)
5 Evaporative emission
purge solenoid
3 Throttle actuator
control motor
12 Fuel tank differential
pressure sensor
13 Fuel tank
temperature
sensor11 Heated oxygen sensor (rear)
10 Heated
oxygen
sensor
(front)
12 Heated oxygen sensor (3rd)
8 Crankshaft position sensor5 Engine
coolant
temperature
sensor
9 Knock sensor
4 Injector
Fuel pump Fuel pressure
regulator Evaporative
emission
canister
6 Evaporative
emission
ventilation
solenoid
7 EGR valve
(stepper motor)
1 Mass airflow sensor
2 Intake air temperature sensor
3 Throttle position sensor (main/sub)
4 Manifold absolute pressure sensor
5 Engine coolant temperature sensor
6 Intake camshaft position sensor
7 Exhaust camshaft position sensor
8 Crankshaft position sensor
9 Knock sensor
10 Heated oxygen sensor (front)
11 Heated oxygen sensor (rear)
12 Heated oxygen sensor (3rd)
13 Fuel tank differential pressure sensor
14 Fuel tank temperature sensor
Ignition switch-IG
Ignition switch-ST
Power supply
CAN communication (input signal)1 Intake engine oil control valve
2 Exhaust engine oil control valve
3 Throttle actuator control motor
4 Injector
5 Evaporative emission purge solenoid
6 Evaporative emission ventilation
solenoid
7 EGR valve (stepper motor)
Ignition coil, ignition power transistor
Multiport fuel injection (MFI) relay
Fuel pump relay
Starter relay
Throttle actuator control motor relay
Generator G terminal
Heated oxygen sensor heater
A/C compressor relay
Diagnostic output
CAN communication (output signal) SenseAct
Engine oil pressure switch
Power steering pressure switch
Generator FR terminal
Generator L terminal
Vehicle speed sensor Accelerator pedal position sensor (main/sub)
Decide
ECM
(with barometric
pressure sensor)
AB

SENSOR
MULTIPORT FUEL SYSTEM (MFI)13A-14
.
HEATED OXYGEN SENSOR (except centor
exhaust pipe heated oxygen sensor )
Heated oxygen sensors are installed in 2 positions (front, rear)
on the catalytic converter. Heated oxygen sensor has a built-in
heater to help early activation of the sensor. This allows feed
-
back control of air-fuel ratio soon after engine start.
.
This sensor uses the oxygen concentration cell principle of
solid electrolyte (zirconia) and displays the property of sudden
change in output voltage near theoretical air-fuel ratio. This
property is used to detect oxygen density in exhaust gas. Feed
-
back to ECM allows it to judge whether air-fuel ratio is rich or
lean compared to theoretical air-fuel ratio.
AK602211
5V 5V
5
4
3
2
1
0
AE
Accelerator pedal position sensor
Accelerator pedal
position sensor (main)
Accelerator pedal
position sensor (main)
Accelerator
pedal stroke Accelerator pedal
position sensor (sub)
Accelerator pedal
position sensor (sub) Hall IC Hall IC
Fully
opened
Output voltage V
ECM
AK602572 AC
Sensing area
AK602262
AC
0.8
14 15 16Theoretical air fuel ratio Electro motive
force (V)
Rich Lean
Air fuel ratio

SENSOR
MULTIPORT FUEL SYSTEM (MFI)13A-15
This allows ECM precise feedback control to get theoretical
air-fuel ratio with best cleaning efficiency of 3-way catalytic con
-
verter.
.
CRANKSHAFT POSITION SENSOR
A crankshaft position sensor is installed on the right side of the
cylinder block. The crankshaft position sensor monitors rotation
of crankshaft sensing ring (36 teeth including 3 missing teeth)
installed on the crankshaft and converts to voltage (pulse sig
-
nal) that is output to ECM. ECM uses crankshaft position sen-
sor's output pulse to detect crankshaft position.
.
AK602263AC
100
0HC
CONOx 50 Purge ratio
Theoretical air fuel ratio
AK602576AC
From MFI relay
Heated xygen sensor
Heater
Zirconia elementECM
0.5V
AK602737AC
Crankshaft
position
sensor Crankshaft sensing ring
(36 teeth including 3 missing teeth)

HEATED OXYGEN SENSOR HEATER CONTROL
MULTIPORT FUEL SYSTEM (MFI)13A-49
HEATED OXYGEN SENSOR HEATER CONTROLM2132007000206
When exhaust gas temperature is low, the heated
oxygen sensor response is dull. So, response is
improved by raising the sensor temperature by pass
-
ing current through the heater at a low exhaust gas
temperature, such as in the immediate aftermath of
the engine start, or during the warm up operation and in cutting the fuel during deceleration. Based on driv
-
ing conditions and the heated oxygen sensor activa-
tion state, ECM changes the amount of current (duty
ratio) to the heater to quicken the activation of the
heated oxygen sensor.
AK602241AD
Battery Heated oxygen sensor heater
Engine coolant
temperature sensor MFI relay
ECM

SEAT
INTERIOR52A-5
SEAT
FRONT SEATM2520004000996
The front seats offer the following advantages.•The cross frame has been installed below the
seat cushion to reduce a risk of injury by restrain
-
ing the forward travel of the passenger. (Waist
position travel reduction frame structure)
AC609378


AB

Head restraint
vertical adjustment Head restraint
vertical adjustment
Reclining adjustment Reclining adjustment
Seatback pocket
Heated seat
switch
Height adjustment
(Driver's side)
Sliding adjustment Sliding adjustment
Seat heater
Height adjustment
(Driver's side)

FRONT SEAT ASSEMBLY
TSB Revision
INTERIOR52A-19
INSPECTIONM1522005500287
CONTINUITY TEST OF HEATED SEAT SWITCH
.1. Check for continuity between terminals.
2. Check that the indicator is lighted at HI or LO when battery voltage is supplied to terminal 5 and terminal 8 is grounded.
3. Check that indicator is lighted when battery voltage is
supplied to terminal s 2 and terminal 6.
.
SEAT CUSHION HEATER CHECK
Measure the resistance between terminals.
Standard value: At room temperature 20 °C (68 °F)
Between terminals 1 and terminal 2
Standard type: Approximately 3.82 ± 4.66 ohms
Spots type: Approximately 4.47 ± 5.48 ohms
Between terminals 1 and terminal 4
Standard type: 8.90 ± 10.88 ohms
Spots type: 8.79 ± 10.75 ohms
.
ItemSwitch
positionTester
connectionSpecified
condition
Driver's
seat sideHI1 − 5, 3 − 8Continuity
exists (2
Ω
or less)
OFF1 − 5, 3 − 5, 5
− 8
Open
circuit
LO3 − 5Continuity
exists (2
Ω
or less)
Front
passenger'
s seat sideHI4 − 5, 8 − 9Continuity
exists (2
Ω
or less)
OFF4 − 5, 5 − 8, 5
− 9
Open
circuit
LO5 − 9Continuity
exists (2
Ω
or less)
ACX00625
AC610374

FRONT SEAT ASSEMBLY
TSB Revision
INTERIOR52A-20
SEATBACK HEATER CHECK
Measure the resistance between terminals.
Standard value: At room temperature 20 °C (68 °F)
Standard type: 4.86 ± 5.94 ohms
Spots type: 4.06 ± 4.96 ohms
HEATED SEAT RELAY CONTINUITY CHECK
12
AC200100
Battery voltageTester
connectionSpecified
condition
Not applied3 − 4Open circuit
•Connect
terminal 1 to
the positive
battery
terminal
•Connect
terminal 2 to
the negative
battery
terminal
3 − 4Continuity
exists (2
Ω or
less)
AC610364
2
3
4
1
AB
Heated seat
relay