Mitsubishi Lancer Evolution IX. Manual - part 621

4WD-ECU

MANUAL TRANSMISSION (FF)

22A-167

4WD-ECU

REMOVAL AND INSTALLATION

M1221012100016

Pre-removal and Post-installation Operation
• Cowl Side Trim <RH> Removal and Installation. (Refer to 

GROUP 52A - Trims 

P.52A-10

). <LH drive vehicles>

• Front Floor Console Removal and Installation. (Refer to 

GROUP 52A 

P.52A-7

). <RH drive vehicles>

AC310944AB

<LH drive vehicles>

<RH drive vehicles>

4.9 ± 0.9 N·m

4.9 ± 0.9 N·m

4WD-ECU

4WD-ECU

SENSOR, SWITCH AND RELAY

MANUAL TRANSMISSION (FF)

22A-168

SENSOR, SWITCH AND RELAY

REMOVAL AND INSTALLATION

M1221012300043

WARNING

Before removing the steering wheel and air bag module assembly, refer to GROUP 52B, Serv-
ice Precautions (

P.52B-3

) and Air Bag Module and Clock Spring (

P.52B-110

).

NOTE: For details on the wheel speed sensor, refer to GROUP 35B 

−

 On-vehicle Service 

P.35B-138

.

AC311353

5

4

3

2

Parking brake lever

1

AC

Steering wheel sensor removal 
steps 

•

Column cover (Refer to GROUP 37 
− Steering Shaft 

P.37-15

).

<<

A

>>

1. Steering wheel sensor

G-sensor removal steps 

•

Front floor console (Refer to 
GROUP 52A 

P.52A-7

).

2. Longitudinal G-sensor
3. Lateral G-sensor

Electric pump relay removal 

4. Electric pump relay

ACD mode changeover switch 
removal steps 

•

Instrument panel ornament (Refer to 
GROUP 52A 

− Instrument Panel 

Assembly 

P.52A-2

).

5. ACD mode changeover switch

SENSOR, SWITCH AND RELAY

MANUAL TRANSMISSION (FF)

22A-169

REMOVAL SERVICE POINT
<<A>> STEERING WHEEL SENSOR 
REMOVAL

CAUTION

Make sure no oil adheres to the steering wheel 
sensor because a photocoupler is used.

Remove the steering wheel sensor from the column 
switch.

INSPECTION

M1221008000016

ELECTRIC PUMP RELAY CONTINUITY 
CHECK

1. Using a jumper wire, connect a battery (+) to 

terminal No.2 of the electric pump relay and 
battery (-) to terminal No.1.

2. While intermittently disconnecting the jumper wire 

at the battery side, check for continuity between 
terminals No.3 and No.4 of the electric pump 
relay.

ACD MODE CHANGEOVER SWITCH 
CONTINUITY CHECK

AC310946AC

Steering wheel sensor

AC311213AB

Jumper wire

Continuity between No.3 

− No.4

Connected

Less than 2 ohms

Disconnected

Open circuit

ACD mode 
changeover switch 
terminal

ACD mode 
changeover 
switch

Continuity

No.1 

− No.2

ON

Less than 2 
ohms

OFF

Open circuit

No.3 

− No.4

−

Less than 2 
ohms

AC311214AB

AIR DUCT

MANUAL TRANSMISSION (FF)

22A-170

AIR DUCT

REMOVAL AND INSTALLATION

M1221013400010

REMOVAL SERVICE POINT
<<A>> AIR DUCT REMOVAL

Turn the splash shield up to the position where the 
air duct mounting bolts can be removed. 

Pre-removal and Post-installation Operation
Front Under Cover Removal and Installation (Refer to 
GROUP 51, Front Bumper Assembly 

P.51-2

.)

AC504974

11 ± 2 N·m

AB

1

Removal steps 

<<

A

>>

1.

Air duct