Mitsubishi Galant 9G. Manual — part 1264

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-160

STEP 49. Check the CAN_L line (communication line only)
between joint connector (3) and multi-center display unit
(middle-grade type) 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 multi-center display

unit (middle-grade type) connector C-05, 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

19 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-520

.

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

wiring harness between joint connector (3) and the
multi-center display unit (middle-grade type)
connector.

AC305231AP

CONNECTOR: C-02

AC305233 AF

CONNECTOR: C-05

HARNESS SIDE

C-05 (B)

AC209365

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22

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21

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20

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19

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18

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17

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16

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15

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14

2

13

1

12

AC209365

AC209365FV

HARNESS SIDE: C-02

TEST HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-161

STEP 50. Check the CAN_L line (communication line only)
between joint connector (3) and the data link 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 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

18 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, go to Step 51.
NO : If the voltage measures more than 1.0 V, repair the

wiring harness between joint connector (3) and the
data link connector.

AC305231AP

CONNECTOR: C-02

AC209365

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22

10

21

9

20

8

19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

AC209365

AC209365GH

HARNESS SIDE: C-02

TEST HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-162

STEP 51. Check the CAN_L line (communication line only)
between intermediate connector C-29 and joint connector
(3) 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 intermediate connector C-29 and 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

20 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-520

.

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

wiring harness between intermediate connector C-29
and joint connector (3).

AC305232

CONNECTORS: C-02, C-29

AG

C-02

C-02

C-29

C-29

AC209365

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22

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21

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20

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19

7

18

6

17

5

16

4

15

3

14

2

13

1

12

AC209365

AC209365GI

HARNESS SIDE: C-02

TEST HARNESS

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-163

STEP 52. Check ABS-ECU connector A-02 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 ABS-ECU connector A-02 in good condition?

YES : Go to Step 53.
NO : Repair the damaged parts.

STEP 53. Check the CAN_L line (communication line only)
between intermediate connector C-29 and ABS-ECU
connector for a short to the power supply. Measure the
voltage at intermediate connector C-29.

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-29 and ABS-ECU

connector A-02, and measure the voltage at the male side
of intermediate connector C-29 (at front wiring harness
side).

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

AC305206

CONNECTOR: A-02

AG

A-02 (GR)

HARNESS SIDE

AC305206

CONNECTOR: A-02

AG

A-02 (GR)

HARNESS SIDE

AC305231AI

CONNECTOR: C-29