Mitsubishi Lancer Evolution IX. Manual — part 529

ABS SENSOR

ANTI-SKID BRAKING SYSTEM (ABS)

35B-147

REMOVAL SERVICE POINT
<<A>> FRONT WHEEL SPEED SEN-
SOR/REAR WHEEL SPEED SENSOR
REMOVAL

CAUTION

Be careful when handling the projection at the tip
of the wheel speed sensor and the toothed edge
of the wheel speed rotor so as not to damage
them by contacting other parts.

INSTALLATION SERVICE POINT
>>A<< REAR WHEEL SPEED SENSOR
INSTALLATION

Install the rear wheel speed sensor, crossing with the
parking brake cable as shown.

INSPECTION

M1352020800057

WHEEL SPEED SENSOR CHECK

1. Check whether any metallic foreign material has

adhered to the projection at the wheel speed
sensor tip. Remove any foreign material. Also
check whether the pole piece is damaged.
Replace it with a new one if it is damaged.

NOTE: The projection can become magnetized
due to the magnet inside the wheel speed sensor,
causing foreign material to easily adhere to it. The
projection may not be able to correctly sense the
wheel rotation speed if foreign matter is on it or if it
is damaged.

2. Measure the resistance between the wheel speed

sensor terminals.

Standard value: 1.24

− 1.64 kΩ

3. If the internal resistance of the wheel speed

sensor is not within the standard value, replace it
with a new wheel speed sensor.

4. Remove all connections from the speed sensor.

The circuit should be open between terminals (1)
and (2) and the body of the wheel speed sensor. If
the circuit is not open, replace with a new wheel
speed sensor.

5. Check the wheel speed sensor cable for

breakage, damage or disconnection. Replace with
a new one if a problem is found.
NOTE: When checking for cable damage, remove
the cable clamp part from the body and then gen-
tly bend and pull the cable near the clamp.

AC100242 AB

<Front>

<Rear>

AC211698AB

Parking brake cable

Rear wheel speed sensor

AC211699AB

<Rear>

<Front>

ACX01120 AB

G-SENSOR

ANTI-SKID BRAKING SYSTEM (ABS)

35B-148

TOOTHED WHEEL SPEED ROTOR
CHECK

Check whether the wheel speed rotor teeth are bro-
ken or deformed. Replace the EBJ assembly of the
driveshaft, respectively, if the teeth are damaged or
deformed.

G-SENSOR

REMOVAL AND INSTALLATION

M1352010100369

CAUTION

Do not drop or apply a shock on the G-sensor.

AC000965

Pre-removal and Post-installation Operation
• Rear Console Assembly Removal and Installation (Refer

to GROUP 52A, Rear Floor Console Assembly

P.52A-8

).

AC211700

Y2056AU

AB

1

2

Parking brake lever

Rear of the vehicle

>>B<<

1.

Lateral G-sensor

>>

A

<<

2.

Longitudinal G-sensor

G-SENSOR

ANTI-SKID BRAKING SYSTEM (ABS)

35B-149

INSTALLATION SERVICE POINTS
>>A<< LONGITUDINAL G-SENSOR
INSTALLATION

The arrow mark on the G-sensor must point to front
of the vehicle.

>>B<< LATERAL G-SENSOR
INSTALLATION

The arrow mark on the G-sensor must point to the
parking brake lever.

INSPECTION

M1352018000098

LATERAL/LONGITUDINAL G-SENSOR
CHECK

1. Disconnect the G-sensor connector and connect

special tool test harness set (MB991348),
between terminals of the disconnected connector.

2. With the ignition switch turned to the "ON"

position, read the voltage between terminals
number 2 and number 3.

Standard Value: 2.4

− 2.6 V

3. With special tool test harness set (MB991348)

connected, rotate so that the arrow points straight
down. Read output voltage between terminals
number 2 and number 3.

Standard Value: 3.4

− 3.6 V

4. If the voltage deviates from the standard value,

and nothing is wrong with the power supply wire
and earth wire, replace the G-sensor.

AC103662AG

MB991348

Connector: D-37/D-38
(Harness side)

Label

Label

STEERING WHEEL SENSOR

ANTI-SKID BRAKING SYSTEM (ABS)

35B-150

STEERING WHEEL SENSOR

REMOVAL AND INSTALLATION

M1352009500039

CAUTION

• Before removing the steering wheel and air bag module assembly, be sure to refer to GROUP 52B,

Service Precautions (

P.52B-3

) and Driver’s, Front Passenger’s Air Bag Module and Clock Spring

(

P.52B-110

).

• Make sure no oil adheres to the steering wheel sensor because a photointerruptors are mounted

on the steering wheel sensor.

Pre-removal and Post-installation Operation
• Steering Wheel Removal and Installation (Refer to

GROUP 37, Steering Wheel

P.37-13

).

• Column Cover, Clock Spring and Column Switch Assem-

bly Removal and Installation (Refer to GROUP 37, Steer-

ing Shaft

P.37-15

).

AC311019AB

Steering wheel sensor