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