Mitsubishi 380. Manual - part 697

 

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Mitsubishi 380. Manual - part 697

 

 

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-198

STEP 13. Check A/C-ECU connector C-15 automatic air 
conditioning system for loose, corroded or damaged 
terminals, or terminals pushed back in the connector.

CAUTION

The strand end of the twisted wire should be within 10 cm 
(4 inches) from the connector. For details refer to 

P.54C-4

.

Q: Is A/C-ECU connector C-15 automatic air conditioning 

system in good condition?
YES : 
Go to Step 14.
NO :  Repair the damaged parts.

16DB477A

C-15 HARNESS SIDE

CONNECTOR:  C-15

C-15 (B)

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-199

STEP 14. Check the CAN_H line (communication line only) 
between joint connector (3) and A/C-ECU connector for 
short to ground. Measure the resistance at joint connector 
(3) C-02.

CAUTION

A digital multimeter should be used. For details refer to 

P.54C-4

.

CAUTION

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

P.54C-4

.

(1) Disconnect joint connector (3) C-02 and A/C-ECU 

connector C-15 automatic air conditioning system, and 
measure the resistance at the wiring harness side of joint 
connector (3) C-02.

(2) Turn the ignition switch to the "LOCK" (OFF) position.

CAUTION

Disconnect the negative battery terminal. For details refer 
to 

P.54C-4

.

(3) Disconnect the negative battery terminal.

16DB408A

CONNECTOR: C-02

16DB477A

C-15 HARNESS SIDE

CONNECTOR:  C-15

C-15 (B)

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-200

(4) Measure the resistance between joint connector (3) 

terminal 6 and body ground.

OK: 1 k

 or more

CAUTION

Strictly observe the specified wiring harness repair proce-
dure. For details refer to 

P.54C-5

.

Q: Does the resistance measure 1 k

 or more?

YES : If the resistance measures 1 k

Ω or more, diagnose 

CAN bus lines thoroughly by referring to 

P.54C-323

.

NO :  If the resistance measures less than 1 k

Ω, repair the 

wiring harness between joint connector (3) and the 
A/C-ECU connector.

STEP 15. Check the CAN_H line (communication line 
including the SRS-ECU) between joint connector (3) and 
the SRS-ECU connector for short to ground. Measure the 
resistance at joint connector (3) C-02.

CAUTION

A digital multimeter should be used. For details refer to 

P.54C-4

.

CAUTION

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

P.54C-4

.

(1) Disconnect joint connector (3) C-02, and measure the 

resistance at the wiring harness side of joint connector (3) 
C-02.

(2) Turn the ignition switch to the "LOCK" (OFF) position.

CAUTION

Disconnect the negative battery terminal. For details refer 
to 

P.54C-4

.

(3) Disconnect the negative battery terminal.

(4) Measure the resistance between joint connector (3) 

terminals 3 and body ground.

OK: 1 k

 or more

Q: Does the resistance measure 1 k

 or more?

YES : If the resistance measures 1 k

Ω or more, go to Step 

18   .

NO :  If the resistance measures less than 1 k

Ω, go to Step 

16.

AC209364

11
22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

AC209364

AC209364

AC209364

AC209364

AC209364

AC209364JH

HARNESS SIDE: C-02

TEST 
HARNESS

16DB408A

CONNECTOR: C-02

AC209364

11
22

10

21

9

20

8

19

7

18

6

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5

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4

15

3

14

2

13

1

12

AC209364

AC209364

AC209364

AC209364

AC209364

AC209364HZ

HARNESS SIDE: C-02

TEST 
HARNESS

DIAGNOSIS

CONTROLLER AREA NETWORK (CAN)

54C-201

STEP 16. Check SRS-ECU connector C-121 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.

CAUTION

The strand end of the twisted wire should be within 10 cm 
(4 inches) from the connector. For details refer to 

P.54C-4

.

Q: Is SRS-ECU connector C-121 in good condition?

YES : Go to Step 17.
NO :  Repair the damaged parts.

STEP 17. Check the CAN_ H line (communication line only) 
between the SRS-ECU connector and joint connector for a 
short circuit. Measure the resistance at joint connector 
C-02.

CAUTION

A digital multimeter should be used. For details refer to 

P.54C-4

.

CAUTION

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

P.54C-4

.

(1) Disconnect joint connector C-02 and SRS-ECU connector 

C-121, and measure the resistance at the wiring harness 
side of joint connector C-02.

(2) Turn the ignition switch to the "LOCK" (OFF) position.

CAUTION

Disconnect the negative battery terminal. For details refer 
to 

P.54C-4

.

(3) Disconnect the negative battery terminal.

16DB478A

CONNECTOR: C-121

HARNESS SIDE

C-121 (Y)

48

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16DB408A

CONNECTOR: C-02

16DB478A

CONNECTOR: C-121

HARNESS SIDE

C-121 (Y)

48

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