Mitsubishi Grandis. Manual — part 628

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-610

TROUBLE JUDGMENT

If the MUT-III can not received signal from the
steering wheel angle sensor, CAN bus line
connector(s) are broken or an open circuit has
occurred.

COMMENTS ON TROUBLE SYMPTOM

The CAN bus line wiring harness wire or connectors
may have loose, corroded, or damaged terminals, or
terminals pushed back in the connector, or the
steering wheel angle sensor may be defective.

POSSIBLE CAUSES

• Damaged harness wires and connectors

• Malfunction of the steering wheel angle sensor

DIAGNOSTIC PROCEDURE

STEP 1. Connector check: C-09 joint connector
(CAN2) connector and C-306 steering wheel
angle sensor connector

CAUTION

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

P.54D-8

.

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

Q: Are the check result normal?

YES :

Go to Step 2 .

NO :

Repair a defective connector or replace the
joint connector.

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

AC310153AF

Connector: C-306 <LHD>

Harness side

AC209350

1

12

2

13

3

14

4

15

5

16

6

17

7

18

8

19

9

20

10

21

11

22

AB

Short pin

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-611

STEP 2. Resistance measurement at C-09 joint
connector (CAN2) and C-306 steering wheel
angle sensor connector.

CAUTION

A digital multimeter should be used. For details
refer to

P.54D-8

.

CAUTION

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

P.54D-8

.

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

steering wheel angle sensor connector, and
measure at the wiring harness side.

(2) Ignition switch: OFF (LOCK)

CAUTION

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

P.54D-8

.

(3) Ensure that the negative battery terminal is

disconnected.

(4) Continuity between C-09 joint connector (CAN2)

terminal No.8 and C-306 steering wheel angle
sensor connector terminal No.3

OK: 2 ohms or less

(5) Continuity between C-09 joint connector (CAN2)

terminal No.19 and C-306 steering wheel angle

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

AC310153AF

Connector: C-306 <LHD>

Harness side

AC204582

Harness side: C-09

EI

Harness side: C-306

Test
harness

Test
harness

AC204582

Harness side: C-09

EJ

Harness side: C-306

Test
harness

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-612

sensor connector terminal No.4

OK: 2 ohms or less

CAUTION

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

P.54D-8

.

Q: Are the check result normal?

YES :

<All the resistances measure 2

Ω or less>

Power supply to the steering wheel angle
sensor may be suspected. Diagnose the
ASC system. Refer to

P.35C-135

.

NO :

<Either or all of the voltages measure more
than 2

Ω> Repair the wiring harness

between the joint connector (CAN2) and the
steering wheel angle sensor connector.

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-613

Diagnostic Item 37: Diagnose the lines from the main bus line to the steering wheel angle sensor <RH
drive vehicles>

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.

ENGINE-ECU<M/T>
ENGINE·A/T-ECU<A/T>

COMBINATION
METER

STEERING
WHEEL
ANGLE
SENSOR

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