Mitsubishi Galant (2004+). Manual - part 363

 

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Mitsubishi Galant (2004+). Manual - part 363

 

 

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-63

STEP 33. Check A/C-ECU connector C-10 <manual air 
conditioning system (low)> or C-15 <manual air 
conditioning system (middle) or 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-10 <manual air conditioning 

system (low)> or C-15 <manual air conditioning system 
(middle) or automatic air conditioning system> in good 
condition?
YES : 
Go to Step 34.
NO :  Repair the damaged parts.

AC305234AB

C-10 HARNESS SIDE

C-15 HARNESS SIDE

CONNECTORS: C-10, C-15

C-10 (B)

C-15 (B)

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-64

STEP 34. Check the CAN_L line (communication line only) 
between joint connector (3) and A/C-ECU connector for a 
short to the power supply. Measure the voltage 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-10 <manual air conditioning system (low)> or 
C-15 <manual air conditioning system (middle) or automatic 
air conditioning system>, and measure the voltage at the 
wiring harness side of joint connector (3) C-02.

(2) Turn the ignition switch to the "ON" position.

AC305231AP

CONNECTOR: C-02

AC305234AB

C-10 HARNESS SIDE

C-15 HARNESS SIDE

CONNECTORS: C-10, C-15

C-10 (B)

C-15 (B)

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-65

(3) Measure the voltage between joint connector (3) terminal 

17 and body ground.

OK: 1.0 V or less

CAUTION

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

P.54C-5

.

Q: Does the voltage measure 1.0 V or less?

YES : If the voltage measures 1.0 V or less, diagnose CAN 

bus lines thoroughly by referring to 

P.54C-465

.

NO :  If the voltage measures more than 1.0 V, repair the 

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

STEP 35. Check the CAN_L line (communication line 
including the SRS-ECU) between joint connector (3) and 
the SRS-ECU connector for short to the power supply. 

Measure the voltage 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 

voltage at the wiring harness side of joint connector (3) 

C-02.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between joint connector (3) terminals 

14 and body ground.

OK: 4.0 V or less

Q: Does the voltage measure 4.0 V or less?

YES : If the voltage measures 4.0 V or less, go to Step 41.
NO :  If the voltage measures more than 4.0 V, go to Step 

36.

AC209365

11

22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

AC209365

AC209365GD

HARNESS SIDE: C-02

TEST 
HARNESS

AC305231AP

CONNECTOR: C-02

AC209365

11

22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

AC209365

AC209365GE

HARNESS SIDE: C-02

TEST 
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-66

STEP 36. Check intermediate connector C-22 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 intermediate connector C-22 in good condition?

YES : Go to Step 37.
NO :  Repair the damaged parts.

STEP 37. Check the CAN_L-side bus line (communication 
line including ECUs) of the floor wiring harness for short 
to the power supply. Measure the voltage at intermediate 

connector C-22.

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 intermediate connector C-22, and measure the 

voltage at the male side (at floor wiring harness side).

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between intermediate connector 

terminal 23 and body ground.

OK: 4.0 V or less

Q: Does the voltage measure 4.0 V or less?

YES : If the voltage measures 4.0 V or less, go to Step 40.
NO :  If the voltage measures more than 4.0 V, go to Step 

38.

AC305233 AI

CONNECTOR: C-22

C-22 (Y)

AC305233 AI

CONNECTOR: C-22

C-22 (Y)

AC209365

AC209365GF

MAIL SIDE: C-22

TEST 
HARNESS

 

 

 

 

 

 

 

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