Mitsubishi Galant (2004+). Manual - part 375

 

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Mitsubishi Galant (2004+). Manual - part 375

 

 

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-111

(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-498

.

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 38. 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) terminal 

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 44.
NO :  If the voltage measures more than 4.0 V, go to Step 

39.

AC209365

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22

10

21

9

20

8

19

7

18

6

17

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16

4

15

3

14

2

13

1

12

AC209365

AC209365GD

HARNESS SIDE: C-02

TEST 
HARNESS

AC305231AP

CONNECTOR: C-02

AC209365

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22

10

21

9

20

8

19

7

18

6

17

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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-112

STEP 39. 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 40.
NO :  Repair the damaged parts.

STEP 40. 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 43.
NO :  If the voltage measures more than 4.0 V, go to Step 

41.

AC305233 AI

CONNECTOR: C-22

C-22 (Y)

AC305233 AI

CONNECTOR: C-22

C-22 (Y)

AC209365

AC209365GF

MAIL SIDE: C-22

TEST 
HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-113

STEP 41. 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 42.
NO :  Repair the damaged parts.

AC305233 AJ

CONNECTOR: C-121

HARNESS SIDE

C-121 (Y)

48

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40

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45

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47

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-114

STEP 42. Check the CAN_L line (communication line only) 
between the SRS-ECU connector and the intermediate 
connector for a short circuit. 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 SRS-ECU 

connector C-121, and measure the voltage at the male side 
of intermediate connector C-22 (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: 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-498

.

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

wiring harness between intermediate connector C-22 
and SRS-ECU connector.

AC305234AC

CONNECTORS: C-22, C-121

C-121 HARNESS SIDE

C-121 (Y)

C-22 (Y)

C-22

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AC209365

AC209365GF

MAIL SIDE: C-22

TEST 
HARNESS

 

 

 

 

 

 

 

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