Mitsubishi Colt Ralliart. Manual — part 640

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-105

Inspection Procedure 11: G and yaw rate sensor power supply circuit

OPERATION

The G and yaw rate sensor is energised by the igni-
tion switch (IG1) through the multi-purpose fuse No.
40 and the G and yaw rate sensor terminal No. 1.

PROBABLE CAUSES

• Damaged wiring harness and connectors

• G and yaw rate sensor malfunction

G and Yaw Rate Sensor Power Source Circuit

Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple

G AND
YAW RATE
SENSOR

Main

Index

Group

TOC

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-106

DIAGNOSTIC PROCEDURE

STEP 1. Connector check: C-45 G and yaw rate
sensor connector, B-22 Joint connector and
B-131 junction block connector

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the damaged connector.

STEP 2. Measure the resistance between C-45 G
and yaw rate sensor connector and B-131
junction block connector.

(1) Disconnect C-45 G and yaw rate sensor

connector and connect B-131 junction block
connector.

(2) Resistance between C-45 G and yaw rate sensor

connector terminal No. 1 and B-131 junction
block connector terminal No. 30

OK: Continuity exists (2

Ω or less)

AC601093

Connector: C-45

AC

C-45(Black)

Harness side

AC601112

Connector: B-22

AB

B-22

Harness side

J/B

i

û

j

AC601113

J/B

(Back view)

AC601113

Connector: B-131

AB

B-131

Harness side

AC601093

Connector: C-45

AC

C-45(Black)

Harness side

J/B

i

û

j

AC601113

J/B

(Back view)

AC601113

Connector: B-131

AB

B-131

Harness side

AC314017

AC314017AD

Test
harness

B-210 connector:
Harness side

Test
harness

C-26 connector:
Harness side

Main

Index

Group

TOC

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-107

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Go to Step 3.

STEP 3. Check the wiring harness between B-129
junction block connector terminal No. 3 and the
ignition switch (IG1).

• Check the power supply line for open circuit.

Q: Is the check result normal?

YES :

Intermittent malfunction (Refer to GROUP

00

− How to Cope with Intermittent

Malfunction

P.00-13

.)

NO :

Repair the wiring harness.

STEP 4. Measure the resistance at C-45 G and
yaw rate sensor connector.

(1) Disconnect C-45 G and yaw rate sensor

connector, and measure at the harness side.

(2) Resistance between C-45 G and yaw rate sensor

connector terminal No. 4 and the body earth

OK: Continuity exists (2

Ω or less)

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Go to Step 5.

STEP 5. Check the harness wire between C-45 G
and yaw rate sensor connector terminal No. 4
and the body earth.

• Check the earth wires for open circuit.

Q: Is the check result normal?

YES :

Intermittent malfunction (Refer to GROUP

00

− How to Cope with Intermittent

Malfunction

P.00-13

.)

NO :

Repair the wiring harness.

J/B

i

û

j

AC601113

J/B

(Back view)

AC601113

Connector: B-129

AC

B-129

Harness side

AC601114

Connector: B-141

AD

B-141

Harness side

AC601093

Connector: C-45

AC

C-45(Black)

Harness side

AC313977AM

C-26 Harness
connector:
Harness side

Test
harness

AC601093

Connector: C-45

AC

C-45(Black)

Harness side

Main

Index

Group

TOC

TROUBLESHOOTING

ACTIVE STABILITY CONTROL SYSTEM (ASC)

35C-108

STEP 6. System retest
Check that the G and yaw rate sensor communicates
with the ASC-ECU normally.
NOTE: When the G and yaw rate sensor related
diagnosis code is not set to ASC-ECU and the G and
yaw rate sensor is not indicated in red at the
M.U.T.-III CAN bus diagnosis, the communication
with the G and yaw rate sensor is normal.

Q: Is the check result normal?

YES : .

Intermittent malfunction (Refer to GROUP

00

− How to Cope with Intermittent

Malfunction

P.00-13

.)

NO : .

Replace the G and yaw rate sensor.

Main

Index

Group

TOC