Mitsubishi Lancer (4A9 engine). Manual — part 84

G AND YAW RATE SENSOR

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-189

G AND YAW RATE SENSOR

REMOVAL AND INSTALLATION

M1355004500420

CAUTION

• Do not use impact wrench.
• Do not drop or shock the G and yaw rate sensor.
• When the G and yaw rate sensor is replaced or installed, always carry out calibration to make

ASC-ECU learn the neutral point (Refer to

P.35C-182

).

Pre-removal and post-installation steps
Instrument panel console cover removal and installation
(Refer to GROUP 52A

− Instrument panel assembly ).

AC904848 AB

1

2

5.0 ± 1.0 N·m

4

5

10 ± 2 N·m

3

Removal steps

1. Oxygen sensor (front) connector
2. G and yaw rate sensor harness

connector

3. G and yaw rate sensor and G and

yaw rate sensor bracket

4. G and yaw rate sensor
5. G and yaw rate sensor bracket

Removal steps (Continued)

STEERING WHEEL SENSOR

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-190

STEERING WHEEL SENSOR

REMOVAL AND INSTALLATION

M1355005100704

CAUTION

• Be sure to remove the clock spring from the column switch and centre the clock spring to prevent

the damage of steering wheel sensor.

• If the centre of the clock spring is not correctly aligned, the steering wheel may not be turned fully

or the cable inside the clock spring may be broken, causing the SRS air bag to be inoperative or
operated incorrectly.

• Before removing the steering wheel/air bag module assembly, refer to GROUP 52B − Service Pre-

cautions and Driver’s Air Bag Module Clock Spring .

• When the steering wheel sensor is replaced or installed, always carry out calibration to make

ASC-ECU learn the neutral point (Refer to

P.35C-183

).

Pre-removal operation
• Driver’s airbag module assembly and steering wheel

assembly removal (Refer to GROUP 37A

− Steering

Wheel <hydraulic power steering> or GROUP 37B

−

Steering Wheel <electrical power steering>).

Post-installation operation
• Driver’s airbag module assembly and steering wheel

assembly installation (Refer to GROUP 37A

− Steering

Wheel <hydraulic power steering> or GROUP 37B

−

Steering Wheel <electrical power steering>).

• Perform steering wheel calibration (Refer to

P.35C-183

).

ACA02951

2

AG

1

Removal steps

•

Position the front wheels in a straight
ahead direction.

1. Clock spring/column switch assembly

(Refer to GROUP 54A

− Column

Switch ).

<<

A

>>

2. Steering wheel sensor

REMOVAL SERVICE POINT

<<A>> STEERING WHEEL SENSOR REMOVAL

CAUTION

After removing the steering wheel sensor, do not
rotate the sensor rotating part.

54-1

GROUP 54

CHASSIS

ELECTRICAL

CONTENTS

CHASSIS ELECTRICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

54A

LOCAL INTERCONNECT NETWORK (LIN) . . . . . . . . . . . . . . .

54B

CONTROLLER AREA NETWORK (CAN) . . . . . . . . . . . . . . . . .

54C

54A-1

GROUP 54A

CHASSIS

ELECTRICAL

CONTENTS

BATTERY. . . . . . . . . . . . . . . . . . . . . .

54A-11

SERVICE SPECIFICATION(S) . . . . . . . . . .

54A-11

ON-VEHICLE SERVICE . . . . . . . . . . . . . . .

54A-11

FLUID LEVEL AND SPECIFIC GRAVITY
INSPECTION . . . . . . . . . . . . . . . . . . . . . . .

54A-11

BATTERY CHARGING . . . . . . . . . . . . . . . .

54A-12

BATTERY TEST . . . . . . . . . . . . . . . . . . . . .

54A-12

BATTERY REMOVAL AND INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

54A-14

INSPECTION . . . . . . . . . . . . . . . . . . . . . . .

54A-16

BATTERY CURRENT SENSOR CHECK <VEHICLES
FOR EUR (EXCEPT 4AT)> . . . . . . . . . . . .

54A-16

IGNITION SWITCH. . . . . . . . . . . . . . .

54A-17

SPECIAL TOOL(S) . . . . . . . . . . . . . . . . . . .

54A-17

TROUBLESHOOTING . . . . . . . . . . . . . . . .

54A-20

STANDARD FLOW OF DIAGNOSTIC TROUBLE
SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . .

54A-20

SYMPTOM CHART. . . . . . . . . . . . . . . . . . .

54A-20

SYMPTOM PROCEDURES . . . . . . . . . . . .

54A-21

IGNITION KEY CYLINDER ILLUMINATION LAMP
DOES NOT ILLUMINATE/EXTINGUISH NORMALLY.
<VEHICLES WITH WCM> . . . . . . . . . . . . .

54A-21

MALFUNCTION OF THE IGNITION SWITCH POWER
SUPPLY SYSTEM . . . . . . . . . . . . . . . . . . .

54A-23

ON-VEHICLE SERVICE . . . . . . . . . . . . . . .

54A-25

INSPECTION . . . . . . . . . . . . . . . . . . . . . . .

54A-25

IGNITION SWITCH REMOVAL AND INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

54A-26

INSPECTION . . . . . . . . . . . . . . . . . . . . . . .

54A-28

IGNITION SWITCH INSPECTION . . . . . . .

54A-28

KEY REMINDER SWITCH INSPECTION. .

54A-28

COMBINATION METER . . . . . . . . . .

54A-29

SERVICE SPECIFICATION(S) . . . . . . . . . .

54A-29

SPECIAL TOOL(S) . . . . . . . . . . . . . . . . . . .

54A-31

TROUBLESHOOTING . . . . . . . . . . . . . . . .

54A-33

STANDARD FLOW OF DIAGNOSTIC
TROUBLESHOOTING . . . . . . . . . . . . . . . .

54A-33

DIAGNOSIS FUNCTION . . . . . . . . . . . . . . .

54A-33

DIAGNOSIS CODE CHART . . . . . . . . . . . .

54A-34

DIAGNOSIS CODE PROCEDURES. . . . . .

54A-35

CODE NO.B1200 ODOMETER FAILURE. .

54A-35

CODE NO.B1201 FUEL INFORMATION ERROR

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

54A-35

CODE No.B1209 TEST MODE . . . . . . . . . .

54A-37

CODE No.B2203 CHASSIS NO. NOT PROGRAMMED

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

54A-37

CODE No.B2463 RHEOSTAT SWITCH SEIZURE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

54A-38

CODE No.B2464 METER INFORMATION SWITCH
SEIZURE . . . . . . . . . . . . . . . . . . . . . . . . . . .

54A-39

CODE No.B2465 IGNITION SWITCH SIGNAL ERROR

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

54A-40

CODE No.U0019 BUS OFF . . . . . . . . . . . .

54A-41

CODE No.U0100 TIME-OUT DURING CAN
COMMUNICATION WITH ENGINE-ECU . .

54A-41

CODE No.U0141 TIME-OUT DURING CAN
COMMUNICATION WITH ETACS-ECU . . .

54A-42

CODE No.U0151 TIME-OUT DURING CAN
COMMUNICATION WITH SRS-ECU . . . . .

54A-43

CODE No.U0164 TIME-OUT DURING CAN
COMMUNICATION WITH A/C-ECU . . . . . .

54A-44

CODE No.U0168 TIME-OUT DURING CAN
COMMUNICATION WITH WCM . . . . . . . . .

54A-45

CODE No.U0184 TIME-OUT DURING CAN
COMMUNICATION WITH AUDIO UNIT . . .

54A-46

CODE No.U0245 TIME-OUT DURING CAN
COMMUNICATION WITH AUDIO VISUAL
NAVIGATION UNIT . . . . . . . . . . . . . . . . . . .

54A-47

CODE No.U1415 CODING DATA NOT WRITTEN