Mitsubishi Grandis. Manual - part 619

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-574

(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 A-07 joint connector (CAN1) 

terminal No.2 and A-04 ASC-ECU connector 

terminal No.15

OK: 2 ohms or less

(5) Continuity between A-07 joint connector (CAN1) 

terminal No.5 and A-04 ASC-ECU connector 
terminal No.11

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 ASC-ECU may be 
suspected. Diagnose the ASC system. 
Refer to 

P.35C-129

.

NO : 

<Either or all of the voltages measure more 
than 2 

Ω> Repair the wiring harness 

between the joint connector (CAN1) and the 
ASC-ECU connector.

AC312553

Harness side: A-07

Test
harness

Test
harness

Harness side: A-04

BU

AC312553

Harness side: A-07

Test
harness

Harness side: A-04

BV 

Test
harness

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-575

Diagnostic Item 26: Diagnose the lines from the main bus line to the combination meter <LH 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.

TROUBLE JUDGMENT

If the MUT-III can not received signals from the 
combination meter, CAN bus line connector(s) are 
broken or an open circuit has occurred.

COMMENTS ON TROUBLE SYMPTOM

The wiring harness wire or connectors may have 
loose, corroded, or damage terminals, or terminals 
pushed back in the connector, or the combination 
meter may be defective.

ENGINE-ECU<M/T>
ENGINE·A/T-ECU<A/T>

COMBINATION
METER

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

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-576

POSSIBLE CAUSES

• Damaged harness wires and connectors

• Malfunction of the combination meter

DIAGNOSTIC PROCEDURE

STEP 1. Connector check: C-09 joint connector 
(CAN2) connector and C-02 combination meter 
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: 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 C-09 joint 
connector (CAN2) and C-02 combination meter 
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 

combination meter 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 

AC310613

BB

Connector: C-02 <LHD>

Harness side

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

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

AC310613

BB

Connector: C-02 <LHD>

Harness side

AC310615

AU

Harness side

Connector: C-09 <LHD>

C-09 (GR)

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54D-577

disconnected.

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

terminal No.7 and C-02 combination meter 

connector terminal No.24

OK: 2 ohms or less

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

terminal No.18 and C-02 combination meter 
connector terminal No.23

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 combination meter 
connector may be suspected. Diagnose the 
combination meter. Refer to 

P.54A-55

.

NO : 

<Either or all of the voltages measure more 
than 2 

Ω> Repair the wiring harness 

between joint connector (CAN2) and the 
combination meter connector.

AC312553  AI

Harness side: C-09

Test
harness

Harness side: C-02

Test
harness

AC312553  AK

Harness side: C-09

Harness side: C-02

Test
harness

Test
harness