Mitsubishi Colt Ralliart. Manual — part 312

AC313937AT

Harness side: B-01

Harness side: B-37

Test
harness

Test
harness

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54D-77

(4) Continuity between B-01 joint connector (CAN2)

terminal No.8 and B-37 EPS-ECU connector
terminal No.8

OK: Continuity (2

Ω or less)

AC313937AU

Harness side: B-01

Harness side: B-37

Test
harness

Test
harness

(5) Continuity between B-01 joint connector (CAN2)

terminal No.11 and B-37 EPS-ECU connector
terminal No.3

OK: Continuity (2

Ω or less)

CAUTION

Strictly observe the specified wiring harness
repair procedure. For details refer to

P.54D-5

.

Q: Is the check result normal?

YES :

<All the resistances measure 2

Ω or less>

Power supply to the EPS-ECU may be
suspected. Diagnose the EPS. Refer to
GROUP 37

− Troubleshooting

P.37-72

.

NO :

<Either or all of the resistances measure
more than 2

Ω> Repair the wiring harness

between the joint connector (CAN2) and the
EPS-ECU connector.

Main

Index

Group

TOC

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54D-78

Diagnostic Item 11: Diagnose when the M.U.T.-III cannot receive the data sent by G and yaw rate
sensor.

CAUTION

When servicing a CAN bus line, earth yourself by touching a metal object such as an unpainted water
pipe. If you fail to do, a component connected to the CAN bus line may be broken.

COMBINATION
METER

ENGINE-ECU

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

FUNCTION

The diagnostic result demonstrates that "Diagnose
when the M.U.T.-III cannot receive the data sent by
G and yaw rate sensor" when the M.U.T.-III checks
the periodically sent data from each ECU and cannot
receive the G and yaw rate sensor data only.

TROUBLE JUDGEMENT CONDITIONS

M.U.T.-III judges the trouble when the periodically
sent data from G and yaw rate sensor cannot be
received and sent.

Main

Index

Group

TOC

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54D-79

PROBABLE CAUSES

• Damaged harness wires and connectors

• Power supply circuit malfunction of the G and

yaw rate sensor

• Malfunction of the G and yaw rate sensor

DIAGNOSIS PROCEDURE

STEP 1. Connector check: B-01 joint connector
(CAN2) and C-43 G and yaw rate sensor
connector

AC601064

AB

C-43 (B)

Connector: C-43

Harness side

AC313820AF

Connector: B-01

CAUTION

The strand end of the twist wire should be within
10 cm from the connector. For details refer to

P.54D-5

.

When checking the joint connector, ensure that its
wiring harness side and its short pins are not dam-
aged.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair a defective connector or replace the
joint connector.

STEP 2. Resistance measurement at B-01 joint
connector (CAN2) and C-43 G and yaw rate
sensor connector.

CAUTION

A digital multimeter should be used. For details
refer to

P.54D-5

.

CAUTION

The test wiring harness should be used. For
details refer to

P.54D-5

.

AC601064

AB

C-43 (B)

Connector: C-43

Harness side

AC313820AF

Connector: B-01

(1) Disconnect the joint connector (CAN2) and the G

and yaw rate sensor connector, and measure at
the wiring harness side.

(2) Turn the ignition switch to the OFF (LOCK)

position.

CAUTION

When measuring the resistance, disconnect the
negative battery terminal. For details refer to

P.54D-5

.

(3) Ensure that the negative battery terminal is

disconnected.

Main

Index

Group

TOC

AC204740

AC204740

AC204740JC

Harness side: C-43

Test harness

Harness side: B-01

Test harness

TROUBLESHOOTING

CONTROLLER AREA NETWORK (CAN)

54D-80

(4) Continuity between B-01 joint connector (CAN2)

terminal No.1 and C-43 G and yaw rate sensor
connector terminal No.3

OK: Continuity (2

Ω or less)

AC204740JD

Harness side: B-01

Test harness

Test harness

Harness side: C-43

(5) Continuity between B-01 joint connector (CAN2)

terminal No.5 and C-43 G and yaw rate sensor
connector terminal No.2

OK: Continuity (2

Ω or less)

CAUTION

Strictly observe the specified wiring harness
repair procedure. For details refer to

P.54D-5

.

Q: Is the check result normal?

YES :

<All the resistances measure 2

Ω or less>

Power supply to the G and yaw rate sensor
may be suspected. Diagnose the ASC
system. Refer to GROUP 35C

−

Troubleshooting

P.35C-105

.

NO :

<Either or all of the resistances measure
more than 2

Ω> Repair the wiring harness

between the joint connector (CAN2) and the
G and yaw rate sensor connector.

Main

Index

Group

TOC