Mitsubishi Lancer Evolution X. Manual - part 505

DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>

TSB Revision

MANUAL TRANSAXLE

22A-113

97

Yaw rate sensor 
(adjusted value)

Yaw rate sensor 
(Correction amount)

Ignition switch: ON

−6 − 6 deg/s

98

SAS (adjusted value) Steering sensor 

(Correction amount)

Ignition switch: ON

−15 − 15 deg

99

Lateral G 
sensor(adjusted 
value)

Lateral G sensor 
(Correction amount)

Ignition switch: ON

−1.7 − 1.7 m/s

2

100

Longitudinal G 
(adjusted value)

Longitudinal G sensor 
(Correction amount)

Ignition switch: ON

−3 − 3 m/s

2

101

Chassis Number 
writing counter

Chassis number writing 
count

Ignition switch: ON

Writing count

102

Chassis Number 
(original) lock

Chassis number 
(original) lock

Ignition 
switch: ON

Locked

Lock

Unlocked

Unlock

103

Mileage counter

Mileage counter

Ignition switch: ON

Counter value

104

Coding counter

Coding count

Ignition switch: ON

Coding count

Item 
No.

Display on scan tool Item name

Check conditions

Normal 
conditions

DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>

TSB Revision

MANUAL TRANSAXLE

22A-114

SPECIAL FUNCTION REFERENCE TABLE

M1221011300170

ACTUATOR TEST TABLE

CAUTION

Since the fluid in the hydraulic unit will be hard-
ened under low temperature, all the inspection 
items in the table may not be checked properly. 
Therefore, completely remove snow and ice from 
the hydraulic unit and leave the vehicle under 
temperature of 0° C (32° F) or higher for 4 hours 

or more before performing the actuator test.
1. The actuator test can be performed only when all 

the following conditions are satisfied.

• Every wheel speed sensor input is 20 km/h or 

less.

• No system malfunction is detected.

• The steering angle of steering wheel is within 

±30°  from the neutral position.

2. With the actuator test, when any of the conditions 

below is met, the forced activation will be 
canceled.

• Any of the wheel speed sensors detects an input 

of 20 km/h or more (excluding item No. 08 "Con-
trol OFF").

• A system malfunction is detected.
• The forced activation time has elapsed.
• Scan tool is removed.
• Scan tool clear key is operated.

Item 
No.

Display on 
scan tool

Check items Test content

Normal conditions

1

ACD air 
bleeding

Air bleeding 
<ACD>

According to the steering angle of 
steering wheel, energize the 
proportioning valve, and operate 
the proportioning valve for 5 
minutes.

No air comes out from the 
bleeder screw established to the 
transfer.

2

AYC air 
bleeding

Air bleeding 
<AYC>

According to the steering angle of 
steering wheel, energize the 
proportioning valve, and operate 
the direction valve for 5 minutes.

No air comes out from the 
bleeder screw established to the 
torque transfer differential.

3

Oil level 
check

Oil level 
check

Operate the direction valve to left 
and right for 20 seconds.

Oil level of reservoir tank is 
adequate.

4

Motor drive

Electric pump 
operation

Operate the electric pump for 3 
seconds.

Operating sound of the electric 
pump can be heard.

5

ACD 
operation 
check

ACD 
operation 
check

Operate the proportioning valve 
<ACD>, and supply the maximum 
hydraulic pressure to the 
multiplate clutch.

The tight corner braking 
phenomenon occurs.

6

AYC 
operation 
check (left)

Clutch 
operation 
check <left 
side>

Operate the direction valve, and 
supply the maximum hydraulic 
pressure to the left clutch.

With the wheels lifted, a speed 
difference is generated between 
left and right rear wheels.

7

AYC 
operation 
check (right)

Clutch 
operation 
check <right 
side>

Operate the direction valve, and 
supply the maximum hydraulic 
pressure to the right clutch.

With the wheels lifted, a speed 
difference is generated between 
left and right rear wheels.

8

Control OFF Control OFF

Turn OFF the electric pump relay, 
and turn OFF the ACD and AYC 
control.

With the actual driving of vehicle, 
there is a difference between 
when the control is ON and OFF.

DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>

TSB Revision

MANUAL TRANSAXLE

22A-115

SENSOR NEUTRAL POSITION LEARNED INI-
TIALIZATION LIST

The sensor neutral position learned value initializa-
tion can be performed only when the vehicle is 
stopped.

Item No. Display on scan 

tool

Item

Initialization contents

1

SAS calibration

Steering angle correction 
amount initialization

Reset the steering angle sensor neutral position 
learned value.

2

Lateral G sensor 
calibration

Lateral acceleration 
correction amount 
initialization

Reset the lateral acceleration sensor neutral 
position learned value.

3

Longitudinal G 
SNS.calibration

Longitudinal acceleration 
correction amount 
initialization

Reset the longitudinal acceleration sensor neutral 
position learned value.

DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>

TSB Revision

MANUAL TRANSAXLE

22A-116

AWD-ECU TERMINAL VOLTAGE REFERENCE CHART FOR ACD

M1221011400166

AC506684

22

9

16

15

2

14

1

3

19

6

18

17

4 5

20

7

21

8

25

12

23

10

24

11

26

13

JAE-E

39

50

44

4243

32

31

33

JAE-E

47

36

45 46

34 35

49

48

3738

52

51

40 41

C-46

AJ

Terminal 
No.

Inspection Items

Inspection requirement

Normal Condition

1

Proportioning valve (for 
ACD)

With the actuator test 
(item No. 01), operate 
the proportioning valve 
<ACD>.

While executing the 
actuator test

0−4 V

After completing the 
actuator test

1 V or less

2

Proportioning valve (for 
AYC)

With the actuator test 
(item No. 02), operate 
the proportioning valve 
<AYC>.

While executing the 
actuator test

0−4 V

After completing the 
actuator test

1 V or less

3

Direction valve (right)

With the actuator test 
(item No. 07), operate 
the direction valve 
<right>.

While executing the 
actuator test

Battery voltage

After completing the 
actuator test

1 V or less

4

CAN-H

−

−

5

CAN-L

−

−

6

Pressure sensor power 
supply

Ignition switch: ON

Approx.5 V

7

Pressure sensor output 
voltage

Ignition switch: ON

0.5−2.7 V

8

Pressure sensor 
ground

Any time

1 V or less

9

Local CAN (ASC-ECU) −

−

10

Local CAN (ASC-ECU) −

−

11

AWC switch power 
supply <Vehicles 
without steering wheel 
audio remote control 
switch>

Ignition switch: ON

Switch is operated to 
upper side (+) and held.

Approx. 1.6 V

Switch is operated to 
down side (−) and held.

Approx. 0.3 V

Release the switch.

Approx. 4.7 V

12

Power supply

Any time

Battery voltage

13

Ground

Any time

1 V or less

14

Direction valve (left)

With the actuator test 
(item No. 06), operate 
the direction valve <left>.

While executing the 
actuator test

Battery voltage

After completing the 
actuator test

1 V or less

16

Ignition switch

Ignition switch: ON

Battery voltage

Ignition switch: OFF

1 V or less

17

Back up power supply

Any time

Battery voltage