Mitsubishi Galant (2004+). Manual — part 395
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-191
STEP 19. Check the CAN_ H line (communication line only)
between the SRS-ECU connector and the intermediate
connector for a short circuit. Measure the resistance at
intermediate connector C-22.
CAUTION
A digital multimeter should be used. For details refer to
CAUTION
The test wiring harness should be used. For details refer to
(1) Disconnect intermediate connector C-22 and SRS-ECU
connector C-121, and measure the resistance at the male
side of intermediate connector C-22 (at floor wiring harness
side).
(2) Turn the ignition switch to the "LOCK" (OFF) position.
CAUTION
Disconnect the negative battery terminal. For details refer
to
.
(3) Disconnect the negative battery terminal.
(4) Measure the resistance between intermediate connector
terminal 22 and body ground.
OK: 1 k
Ω or more
Q: Does the resistance measure 1 k
Ω or more?
YES : If the resistance measures 1 k
Ω or more, diagnose
CAN bus lines thoroughly by referring to
NO : If the resistance measures less than 1 k
Ω, repair the
wiring harness between intermediate connector C-29
and SRS-ECU connector.
AC305234AC
CONNECTORS: C-22, C-121
C-121 HARNESS SIDE
C-121 (Y)
C-22 (Y)
C-22
48
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
AC209364IA
MAIL SIDE: C-22
TEST
HARNESS
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-192
STEP 20. Check the CAN_H line (communication line only)
between joint connector (3) and the intermediate
connector for a short circuit. Measure the resistance at
joint connector (3) C-02.
CAUTION
A digital multimeter should be used. For details refer to
CAUTION
The test wiring harness should be used. For details refer to
(1) Disconnect intermediate connector C-22 and 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
.
(3) Disconnect the negative battery terminal.
(4) Measure the resistance between joint connector (3)
terminals 3 and body ground.
OK: 1 k
Ω or more
CAUTION
Strictly observe the specified wiring harness repair proce-
dure. For details refer to
Q: Does the resistance measure 1 k
Ω or more?
YES : If the resistance measures 1 k
Ω or more, diagnose
CAN bus lines thoroughly by referring to
NO : If the resistance measures less than 1 k
Ω, repair the
wiring harness between intermediate connector C-22
and joint connector (3).
AC305231AP
CONNECTOR: C-02
AC305233 AI
CONNECTOR: C-22
C-22 (Y)
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
AC209364HZ
HARNESS SIDE: C-02
TEST
HARNESS
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-193
STEP 21. Check the CAN_H line (communication line only)
between joint connector (3) and the data link 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
CAUTION
The test wiring harness should be used. For details refer to
(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
.
(3) Disconnect the negative battery terminal.
(4) Measure the resistance between joint connector (3)
terminal 7 and body ground.
OK: 1 k
Ω or more
CAUTION
Strictly observe the specified wiring harness repair proce-
dure. For details refer to
Q: Does the resistance measure 1 k
Ω or more?
YES : If the resistance measures 1 k
Ω or more, go to Step
22 .
NO : If the resistance measures less than 1 k
Ω, repair the
wiring harness between joint connector (3) and the
data link connector.
AC305231AP
CONNECTOR: C-02
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
AC209364IC
HARNESS SIDE: C-02
TEST HARNESS
DIAGNOSIS
TSB Revision
CONTROLLER AREA NETWORK (CAN)
54C-194
STEP 22. Check the CAN_H line (communication line only)
between intermediate connector C-29 and joint connector
(3) for short to ground. Measure the resistance at joint
connector (3) C-02.
CAUTION
A digital multimeter should be used. For details refer to
CAUTION
The test wiring harness should be used. For details refer to
(1) Disconnect intermediate connector C-29 and 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
.
(3) Disconnect the negative battery terminal.
(4) Measure the resistance between joint connector (3)
terminal 9 and body ground.
OK: 1 k
Ω or more
CAUTION
Strictly observe the specified wiring harness repair proce-
dure. For details refer to
Q: Does the resistance measure 1 k
Ω or more?
YES : If the resistance measures 1 k
Ω or more, diagnose
CAN bus lines thoroughly by referring to
NO : If the resistance measures less than 1 k
Ω, 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
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
AC209364ID
HARNESS SIDE: C-02
TEST HARNESS
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