2005 MITSUBISHI LANCER EVOLUTION IX relay

13A-21MPI – TROUBLESHOOTING
Check connector: B-32
Replace the No 2. waste gate solenoid
valve
Check connector:B-19X
Measure at the waste gate
solenoid valve connector B-32
•Undo the connector and
measure on the solenoid
valve side
•Resistance between 1-2
OK:29~35Ω(when at 20ºC)
Measure at the waste gate
solenoid valve connector B-32
•Undo the connector and
measure on the harness side
•Ignition switch: ON
•Voltage across earth at 63
OK:battery voltage
Measure at the engine ECU
connector C-50
•Measure the voltage at the
engine ECU terminal
•Ignition switch: ON
•Voltage across earth at 63
OK:battery voltage
Check connector:C-50
Inspect the harness between the
No.2 waste gate solenoid valve
and the engine ECU
•Check if the output wire is
damaged
Inspect the harness between the
No.2 waste gate solenoid valve
and the engine control relay
•Check if the power supply wire
is damaged
Replace the engine ECU
Inspect the harness between the No.2
waste gate solenoid valve and the
engine control relay, and repair if
necessary
•Check if the power supply wire is cut
or has short circuited
Check connector:C-50
Inspect the harness between the No.2
waste gate solenoid valve and the
engine ECU
•Check if the output wire is cut or has
short circuited
Replace the engine ECU
NG
OK
OK
OK
OK
OK
NG
NG
NG
NG
Repair
Repair
OK
OK
NG
NG
OK
Repair
NGRepair
Repair
No.2 waste gate solenoid valve systemProbable causes of the malfunction
The No.2 waste gate solenoid valve controls the supercharge pressure
introduced to the waste gate actuator in the turbocharger.•Malfunction of the No.2 waste gate
solenoid valve.
•Circuit break, short circuit or a faulty
connection in the No.2 waste gate
solenoid valve circuit.
•Malfunction of the engine ECU.
OKNGRepair
OKNGRepair
Inspection procedure 37

GENERAL INFORMATION - HOW TO READ THE WIRING DIAGRAMS0-4
Reading Circuit Diagrams
These diagrams show the circuits for each system, from the fuse or fusible link to the earth. In principle, the power supply is
shown at the top and the earth at the bottom, to make it easier to understand the flow of current in the circuit.
The circuit diagrams show a state where none of the switches, etc. are operating.
Indicates power take-out
point.Indicates connector No. The same number is used in the layout
diagrams. Connector numbers shown inside a rounded box indicate
connector symbols that are listed together at the bottom of the page.
Connector numbers that are not shown inside a rounded box indicate
components that are incorporated into the harness.
Indicates that the terminal is
connected via a plate inside
the relay box.
Each circuit diagram is divided into
blocks shown on separate pages.
This number indicates the block.
Indicates the harness branch
point. This number matches the
branch numbers in the other
circuit diagrams.
Indicates the number of the circuit
to which the branch connects.
Indicates the power supply
within the control unit. If no
voltage is indicated, then it is
the battery voltage.
An "X" at the end of a connector
number shows that it is part of the
centralized relay. For more
information, refer to the section
covering the Centralized Junction.
Indicates that circuit diagram
continues at [A] in Block [2].
Indicates the connector symbol,
listed in the order of the connector
numbers in the circuit diagram.
Indicates the operating
conditions of the coolant
temperature switch, etc.Indicates shield
wire.An upward arrow indicates that
the current flows from bottom to
top in the diagram.
RegisterRelayMotor Relay boxFusible link
Fusible link
Diode
Sensor Switch
headlightsignition

GENERAL INFORMATION - HOW TO READ THE WIRING DIAGRAMS0-10
2. Abbreviations used in internal circuits of combination meter
3. Abbreviations used in switch and relay circuits

LAYOUT DIAGRAMS - ENGINE COMPARTMENT1-4
A-01 (2-grey) Side turn signal lamp (RH)
A-02 (2-grey) Brake fluid level switch
A-04 (2-grey) Side turn signal lamp (LH)
A-05 (2-black) Front ABS sensor (LH)
A-06X Fog lamp relay or spare connector for fog
lamp relay
A-07X Horn relay
A-08X Condenser fan relay (LO)
A-09X Condenser fan relay (HI)
A-11X Radiator fan control relay
A-12X Front ECUA-13X (11) Front ECU
A-14 (2-black) Junction between front harness (LH) and
control harness
A-16 (2-black) Headlamp (HI : LH)
A-19 (3-grey) Radiator fan controller
A-20 (1-black) Horn (HI)
A-21 (2-brown) External air temperature sensor (vehicle
fitted with fully automatic A/C)
A-22 (1-black) Horn (LO)
A-23 (2-black) Headlamp (HI: RH)
A-28 Spare connector for fog lamp
A-29 Dummy connector
ENGINE COMPARTMENT
Connector Symbol
Front harness (RH)

LAYOUT DIAGRAMS - ENGINE / TRANSMISSION1-6
B-01 (1-black) Engine oil pressure switch
B-02 Alternator
B-03 (4-grey) Alternator
B-04 Starter
B-05 (1-black) Starter
B-06 (4-black) Throttle position sensorB-07 (2-black) Purge control solenoid valve
B-08 (7-black) Airflow sensor
B-12 (5-grey) Windscreen wiper motor
B-13X Engine speed detection connector
B-14X Starter relay
B-17X Ignition coil relay
ENGINE / TRANSMISSION
Connector Symbol
Control harnessGround cable
Battery
harness

1-7
B-19X (4) Engine control relay
B-20X (4) A/C compressor relay
B-21 (10-black) Control panel / battery harness junction
B-25 (4-black) O
2sensor
B-26 (2-black) Injector 4
B-27 (2-black) Injector 3
B-28 (2-black) Injector 2B-29 (2-black) Injector 1
B-30 (2-grey) Waste gate solenoid valve 1
B-31 (8-black) Control harness / transmission harness
junction
B-32 (2-black) Waste gate solenoid valve 1
B-33 (3-black) Intake cam position sensor
B-34 (2-black) Air temperature sensor
LAYOUT DIAGRAMS - ENGINE / TRANSMISSION
Ground cable

LAYOUT DIAGRAMS - ENGINE / TRANSMISSION1-9
B-126 (6-black) Idle speed control servo
B-127 (4) Electric pump relay
B-128 (4) Fuel pump relay 3
B-129 (6-black) Register (for injector)
B-130 (2-black) Fuel pump register
B-131 (3-black) Vehicle speed sensorB-132 (2-black) Back-up lamp switch
B-133 (2-black) Secondary air control solenoid valve
B-134 (2-black) Oil feeder control valve
B-135 (3-black) Manifold absolute pressure sensor
Ground cable
Transmission harness

LAYOUT DIAGRAMS - INSTRUMENT PANEL1-14
C-201 (6) Ignition switch
C-202 (7) Key reminder switch
C-203 (10) Column switch
C-204 (4-yellow) Clock spring
C-205 (6) Clock spring
C-206 (1) Horn switch
C-207 (2) Driver’s airbag module (squib)
C-208 (13) Instrument panel harness / J/B junctionC-209 (14) Instrument panel harness / J/B junction
C-210 (6) Instrument panel harness / J/B junction
C-211 (1-black) Instrument panel harness / J/B junction
C-212 (28) Instrument panel harness / J/B junction
C-213 (5) Demister relay
Instrument panel (cont’d)
Connector Symbol
Steering wheel
Clock spring
Instrument panel
harness