Mitsubishi Galant (2004+). Manual — part 500

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-611

STEP 2. Check the CAN bus lines between intermediate
connector C-22 and the SRS-ECU. Measure the resistance
between intermediate connector C-22 and SRS-ECU

connector C-121.

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 resistance between the
wiring harness side connector of SRS-ECU connector
C-121 and the male side connector of intermediate
connector C-22 (at front wiring harness side).

(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.

AC305234AC

CONNECTORS: C-22, C-121

C-121 HARNESS SIDE

C-121 (Y)

C-22 (Y)

C-22

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DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-612

(4) Measure the resistance between intermediate connector

terminal 23 and SRS-ECU connector terminal 43.

OK: 2 ohms or less

(5) Measure the resistance between intermediate connector

terminal 22 and SRS-ECU connector terminal 32.

OK: 2 ohms or less

CAUTION

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

P.54C-5

.

Q: Do all the resistances measure 2 ohms or less?

YES : If all the resistances measure 2 ohms or less, go to

Step 3.

NO : If either of the resistances measures more than 2

ohms or all the resistances measure more than 2
ohms, repair the wiring harness between intermediate
connector C-22 and the SRS-ECU connector.

AC204582

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AC204582

TEST
HARNESS

CB

TEST
HARNESS

MALE SIDE: C-22

HARNESS SIDE: C-121

AC204582

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AC204582

TEST
HARNESS

CC

TEST
HARNESS

MALE SIDE: C-22

HARNESS SIDE: C-121

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-613

STEP 3. Check joint connector (3) C-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

.

Check the joint connector at the wiring harness side for loose,
corroded or damaged terminals, or terminals pushed back in
the connector, and also check the short pin behind the connec-
tor for corrosion, deformation and delamination.
Q: Is joint connector (3) C-02 in good condition?

YES : Go to Step 4.
NO : Repair the damaged parts. Replace the joint

connector as necessary.

AC305231AP

CONNECTOR: C-02

AC209350

1

12

2

13

3

14

4

15

5

16

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11

22

AB

SHORT PIN

DIAGNOSIS

TSB Revision

CONTROLLER AREA NETWORK (CAN)

54C-614

STEP 4. Check the CAN bus lines between intermediate
connector C-22 and joint connector (3). Measure the
resistance between intermediate connector C-22 and 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 intermediate

connector C-22, and measure the resistance between the
wiring harness side connector of joint connector (3) C-02
and the female side connector of intermediate connector
C-22 (instrument panel wiring harness side).

(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.

AC305231AP

CONNECTOR: C-02

AC305233 AI

CONNECTOR: C-22

C-22 (Y)